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Digital printing in Minnesota has been a door opener for many businesses. Because printers sell the same thing as everyone else, everyone tries to claim that their service, quality and price are better than others. For this reason, every printer has to find something that would separate them from everyone else. And some business owners find that they have increased productivity after using digital technology and short run processes. Somehow, these gains can be credited to a combination of better pricing and more efficient press performance. Let’s say you have greeting cards that need to be printed. Obsolete inventory through the use of short run digital press can be eliminated.
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This is because with this technology you can print only the needed cards, thus, resulting to orders printed in the exact quantity required. But just the same this kind of printing system is not for everyone. There are risks and changes that need to be dealt with. Nevertheless, the printing industry will continue to change and improve in the years to come. Thus, all business owners and companies have to do is to determine whether this certain printing technique is what they need.
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(Redirected from Indigo Digital Press) HP Indigo building, Nes Ziona, Israel HP Indigo Division, is a company that was first developed and popularized as an Israeli company named Indigo Digital Press that was bought by Hewlett-Packard. It develops, manufactures and markets digital printing solutions, including printing presses, proprietary consumables and workflow. Founded in 1977, it was an independent company until it was acquired by HP in 2001. They have offices around the world, with headquarters in Nes Ziona, Israel. Customers of HP Indigo solutions include commercial printers, photo specialty printers, and label and packaging converters to print applications such as marketing collateral, photo albums, direct mail, labels, folding cartons, flexible packaging, books, manuals, and specialty jobs. The ability of digital presses to print without plates enables the use of variable data such as text or images, such as in personalized direct marketing applications, or in photo albums, which are usually printed in copies of one. Digital presses also make short-run and just-in-time printing cost-effective. In this way, digital presses have changed the economic models for print in a wide variety of market segments, cutting down on supply chain costs and simplifying the creation of campaigns that reach consumers in more creative, personalized ways. The name Indigo comes from a company formed by Benny Landa in 1977. Landa, known as the father of digital offset color printing, was born in Poland to post-World War II Jewish refugee parents, who later immigrated to Edmonton, Alberta, Canada. Landa's interest in printing goes back to the time he worked as a child in his father's photo shop. His father purchased a cigar store that had a small photo studio in the back which he developed, using his skills as a carpenter, into his own portrait studio. While a student in London, Landa got a job at Commercial Aid Printing Services (CAPS), a company offering printing services and microfilm solutions. Landa was instrumental in developing a solution that won the company a contract with Rolls Royce and was appointed as Head of R&D. However, CAPS lacked manufacturing capital and went into receivership in 1969. In 1971 he joined Gerald Frankel, the owner of CAPS, and founded a new company - Imaging Technology (Imtec). Landa led Imtec’s R&D activities and invented the company’s core imaging technology. While researching liquid toners at Imtec, he worked on a method of high-speed image development that would later lead to the invention of ElectroInk. At the start of the 1990s Indigo moved from a primarily research-driven business into a full-scale printing equipment manufacturing company. The company's first product would be a digital plotter/duplicator, bringing the tiny company (its 1991 sales totaled less than US$5 million, generating a profit of $440,000) head to head with such industry giants as Xerox and Canon. In 1993 Indigo launched the E-Print 1000 at IPEX trade show. The E-Print 1000 eliminated the expense and labor of the plate-printing setup process, printing directly from a computer file, and enabled inexpensive short-run color printing. Images not only could be readily changed, they could be changed from page to page, requiring neither additional setup or pauses in the print run. Instead of printing to metal plates, the E-Print created a latent image on the Photo Imaging Plate or PIP through the use of an electrostatic charge. This charged area would then attract the charged ElectroInk, which would in turn be transferred to the ITM or blanket, and then again transfer from the blanket to the paper or other substrate. Because 100% of the ink transfers from PIP to blanket to substrate, a different image and color could be printed with each rotation of the press. At the same time, Indigo's ElectroInk-based color inks offered print quality rivaling that of traditional printing processes. Almost 20 years later, and despite the numerous technological improvements, Indigo presses are still based on this core technology. In 1994 Indigo had an initial public offering on the NASDAQ stock exchange, selling 52 million shares at $20 per share and raising $100 million. The offering reduced Landa's personal holding in Indigo to 70 percent. As the stock continued to climb, the following year, Landa's paper worth reached some $2 billion by 1995. At the drupa trade show in 1995 Indigo launched another product: the Omnius press. Whereas E-Print focused on medium-volume single-sheet printing, Omnius brought digital printing to a variety of surfaces, including plastic, cardboard, film, and, especially, cans, bottles, and other packaging surfaces. Omnius was the precursor of today's portfolio of Indigo's labels and packaging presses. At the end of 1995, Indigo sales did not reach the expected levels, and the company found itself overstaffed. Despite a strong rise in revenues to $165 million, the company posted its fourth year of losses, of about $40 million. George Soros however still believed in the company’s potential and increased his investment to 30 percent of Indigo's shares by 1997. By 1998 the company improved its financial performance and revenues passed the $200 million mark for the first time. Hewlett-Packard offices in Nes Ziona In 2000 the Hewlett-Packard company made a $100m investment in Indigo, buying 14.8 million of Indigo's common shares, which represented 13.4 percent of the company's outstanding shares. On September 6, 2001, HP announced that it would acquire the remaining outstanding shares of Indigo Indigo N.V. (NASDAQ: INDG) for approximately $629 million in HP common stock and a potential future cash payment of up to $253 million contingent upon Indigo's achievement of long-term revenue goals, for an aggregate potential payment of up to $882 million.  In the following years, HP continued to invest in Israel-based graphic arts companies, acquiring Scitex Vision in 2005 and Nur Macroprinters in 2007. Other employees of HP in Israel (which includes not only employees of the Indigo division, but also of Scitex and Israeli's divisions of HP Labs, made it the second-largest foreign employer after Intel. Under the ownership of HP, Indigo developed and grew to become a world leader in the digital print industry. In 2002 they announced the first product manufactured jointly with HP: the HP Indigo 5000, and their second generation of products (known internally as "series 2") was born. Other products belonging to these series were the roll-fed ws4000 series. At drupa 2008 Indigo announced the Indigo 7000 digital press, with over 70% higher productivity over series 2. This product further pushed the break-even point versus offset lithography and enabled more pages to be economically viable on Indigo. Other presses unveiled at drupa included the double engine Indigo W7200 and the new derivative for labels, the Indigo WS6000. In August 2009 HP announced they had reached 5,000 HP Indigo digital presses in operation around the world. The company is ranked No. 1 in the US high-volume digital press market and, according to HP officials, has a 75% share of the world market for digital commercial photo printing. In March 2012 HP Indigo unveiled the Indigo 10000 B2/29" digital press and released it to market a year later. By March 2016, there were over 200 Indigo 10000 customer installations in over 20 countries. In September 2013, Indigo claimed dominance of the narrow label market, with General Manager Alon Bar-Shany calling the Indigo WS6600 press "the best-selling solution in the narrow web industry, not just in digital printing, (but) narrow overall."  In 2014, HP Indigo marked the launch of the new 20000 and 30000 digital presses, aimed at the packaging markets. The presses target flexible packaging converters, label converters and folding carton establishments. In 2016 Indigo announced a new portfolio based on innovation on four core pillars of their technology: quality, color, applications and productivity. They also announced PrintOS, a cloud-based platform to help customers. HP Indigo uses a proprietary, patented technology and a business model that sells both presses and their consumables, as well as services. The presses are assembled in a dedicated facility in HP's Kiryat Gat campus, and the inks are manufactured in both Kiryat Gat and TUAS, Singapore. Indigo has over 4500 customers in 120 countries around the world. They include some of the largest names in print world, including Cimpress and Consolidated Graphics (now part of RR Donnelley) but also a widevariety of small and medium-sized print service providers and labels and packaging converters. According to Indigo GM Alon Bar-Shany, volume printed on Indigo presses grew by over 50% from 2012 to 2016, reaching an estimated 30 B pages. The year 2005 marked the creation of Dscoop, the independent user's group of Indigo and HP Graphic Arts solutions. By 2015 it reached over 7000 users today, including owners and technical personnel. Dscoop membership is free of charge for HP Graphic Arts users throughout the Americas, Europe, the Middle East and Africa, Asia Pacific and Japan. There are several families of HP Indigo presses, which can be broadly grouped by the type of paper-handling mechanism they work with: Sheetfed (or cut-sheet) or Webfed (or roll-fed). Sheetfed presses print on sheets, have a feeder system consisting of drawers and/or a pallet of paper, and print on both sides of the paper (duplex print/perfecter), printed sheets are collected in a stacker mainly for paper printing. Examples of sheetfed presses include the HP Indigo 7900, the HP Indigo 10000 and the new HP Indigo 12000. Webfed presses print on rolls, often referred to as a web the feeder system (unwinder) feeds the paper through continuously in most cases, print on one side of the substrate (simplex) printed rolls can be collected on a rewinder or cut into sheets (sheeter). Examples of webfed presses are the HP Indigo WS6800 narrow format press for labels and flexible packaging, the Indigo 20000 digital press, and the Indigo W7250 for books, photo and other commercial applications. The launch of the HP Indigo 10000 digital press in 2012 marked the first time the company embarked on a platform that supports a paper size beyond A3. With the B2/29.5" paper format, they aim to increase the productivity and application range of traditional print service providers. In 2014 two new products based in the same type of engine/format were released, the Indigo 20000 and the Indigo 30000, aimed at the flexible packaging and folding-cartons markets, respectively. In 2016, Indigo introduced the 80/minutes per meter roll-fed 80000 press for label production, as well as new models of its sheetfed presses: the 12000, 7900 and 5900. The also announced the B1 roll-fed Indigo 50000, which is scheduled for release in 2017. In addition, the announced new solutions for packaging post-print under the Pack Ready umbrella, and demonstrated a concept for digital combination printing for labels. Each Indigo press has up to 7 color stations, which can use cyan, magenta, yellow, black and a variety of special and spot color inks, such as white, silver, UV red and transparent. HP provides the option for users to mix their own ink colors to match Pantone references. This is common with non-digital offset litho presses, and is one of the features that distinguishes the HP Indigo process. "Off-press" colors are mixed from 11 color (from the 15 original) Pantone spectrum at an offline, ink mixing station. Users can also order special pre-mixed colors from HP Indigo, for example fluorescent pink. HP Indigo presses are available in configurations supporting four, five, six or seven colors. At drupa 2008, Indigo unveiled a new workflow strategy for their portfolio called HP SmartStream, based on their own development and on partnerships with other industry vendors. Among the announcements was a [web-to-print] product in partnership with Press-Sense (later bought by Bitstream makers of Pageflex.) They also released new versions of their Digital Front Ends (DFEs). Today, their SmartStream workflow portfolio is based on both their own products, as well as partnerships with other graphic arts vendors in fields such as job creation, pre-press, variable data printing and finishing. In 2004 HP made a 100 million shekel investment in a new production site in Kiryat Gat, Israel. The factory is responsible for manufacturing HP Indigo ElectroInk. There is a sister facility in Singapore that also manufactures Indigo ElectroInk. In 2007 an adjacent hardware center was opened in Kiryat Gat. This facility assembles frames, feeders, and other components with imaging engines into finished presses, and also serves as the site for manufacturing other operator-replaceable consumables, such as the blanket. In late 2012, HP Indigo inaugurated a second ink plant in Kiryat Gat, which will focus on the manufacturing of ElectroInk for the new family of presses: the HP Indigo 10000, Indigo 20000 and Indigo 30000 digital presses. This 118,000 square feet facility is reported to be the first building in the country and the first HP manufacturing facility worldwide designed to meet the LEED Silver environmental standard. Early incarnations of the press (Series 1 engines) were prone to banding and ink adhesion problems. However newer models have corrected most of these issues.
Digital Printing Press: An Update Banner PrintingThe earliest surviving camera photograph, 1826 or 1827, known as View from the Window at Le Gras The history of photography has roots in remote antiquity with the discovery of two critical principles, that of the camera obscura (darkened or obscured room or chamber) and the fact that some substances are visibly altered by exposure to light, as discovered by observation. As far as is known, nobody thought of bringing these two phenomena together to capture camera images in permanent form until around 1800, when Thomas Wedgwood made the first reliably documented, although unsuccessful attempt. In the mid-1820s, Nicéphore Niépce succeeded, but several days of exposure in the camera were required and the earliest results were very crude. Niépce's associate Louis Daguerre went on to develop the daguerreotype process, the first publicly announced and commercially viable photographic process. The daguerreotype required only minutes of exposure in the camera, and produced clear, finely detailed results. It was commercially introduced in 1839, a date generally accepted as the birth year of practical photography. The metal-based daguerreotype process soon had some competition from the paper-based calotype negative and salt print processes invented by William Henry Fox Talbot. Subsequent innovations made photography easier and more versatile. New materials reduced the required camera exposure time from minutes to seconds, and eventually to a small fraction of a second; new photographic media were more economical, sensitive or convenient, including roll films for casual use by amateurs. In the mid-20th century, developments made it possible for amateurs to take pictures in natural color as well as in black-and-white. The commercial introduction of computer-based electronic digital cameras in the 1990s soon revolutionized photography. During the first decade of the 21st century, traditional film-based photochemical methods were increasingly marginalized as the practical advantages of the new technology became widely appreciated and the image quality of moderately priced digital cameras was continually improved. The coining of the word "photography" is usually attributed to Sir John Herschel in 1839. It is based on the Greek φῶς (phōs), (genitive: phōtós) meaning "light", and γραφή (graphê), meaning "drawing, writing", together meaning "drawing with light". A camera obscura used for drawing Photography is the result of combining several different technical discoveries. Long before the first photographs were made, Greek mathematicians Aristotle and Euclid described a pinhole camera in the 5th and 4th centuries BCE. In the 6th century CE, Byzantine mathematician Anthemius of Tralles used a type of camera obscura in his experiments Ibn al-Haytham (Alhazen) (965 in Basra – c. 1040 in Cairo) studied the camera obscura and pinhole camera, Albertus Magnus (1193/1206–80) discovered silver nitrate, and Georges Fabricius (1516–71) discovered silver chloride. Daniel Barbaro described a diaphragm in 1568. Wilhelm Homberg described how light darkened some chemicals (photochemical effect) in 1694. The novel Giphantie (by the French Tiphaigne de la Roche, 1729–74) described what could be interpreted as photography. The earliest known surviving heliographic engraving, made in 1825. It was printed from a metal plate made by Joseph Nicéphore Niépce with his "heliographic process". The plate was exposed under an ordinary engraving and copied it by photographic means. This was a step towards the first permanent photograph from nature taken with a camera obscura. In 1614, Angelo Sala demonstrated that "powdered silver nitrate is blackened by the sun", as was paper that was wrapped around it. This discovery of the sun's effect on powdered silver nitrate was not supported and was subsequently disregarded by then-respected scientists who said that his discovery "had no practical application." Around 1717,[n 1] Johann Heinrich Schulze, a German professor of anatomy and physics, set down a bottle containing silver nitrate and chalk by the window and unintentionally in the path of incoming light from the sun. The mixture, unsurprisingly, turned dark. But what he noticed and found to be strange was that part of it remained white and formed a line across the bottle. He then observed a cord hanging down and going across in front of the window, which he found out to be the cause. On further examination, he found that the entire mixture inevitably reverted to its original white color. Experimenting further, Schulze succeeded in transferring words he pasted on the bottle printed into the substance. Describing his achievement, Schulze wrote that “[t]he sun’s rays, where they hit the glass through the cut-out parts of the paper, wrote each word or sentence on the chalk precipitate so exactly and distinctly that many who were curious about the experiment but ignorant of its nature took occasion to attribute the thing to some sort of trick.” He put the silver nitrate in an oven, which had no effect on its color. This proved to him, definitively, that heat had not facilitated the transformation, as popularly suspected. Rather, it was the light. In 1777, the chemist Carl Wilhelm Scheele was studying the more intrinsically light-sensitive silver chloride and determined that light darkened it by disintegrating it into microscopic dark particles of metallic silver. Of greater potential usefulness, Scheele found that ammonia dissolved the silver chloride but not the dark particles. This discovery, which could have been used to stabilize or "fix" a camera image captured with silver chloride, was little-noticed at the time and unknown to the earliest photography experimenters. It was not until around the year 1800 that Thomas Wedgwood made the first known attempt to capture the image in a camera obscura by means of a light-sensitive substance. He used paper or white leather treated with silver nitrate. Although he succeeded in capturing the shadows of objects placed on the surface in direct sunlight, and even made shadow-copies of paintings on glass, it was reported in 1802 that "[t]he images formed by means of a camera obscura have been found too faint to produce, in any moderate time, an effect upon the nitrate of silver." The shadow images eventually darkened all over because "[n]o attempts that have been made to prevent the uncoloured part of the copy or profile from being acted upon by light have as yet been successful." Wedgwood may have prematurely abandoned his experiments due to frail and failing health; he died aged 34 in 1805. "Boulevard du Temple", a daguerreotype made by Louis Daguerre in 1838, is generally accepted as the earliest photograph to include people. It is a view of a busy street, but because the exposure lasted for several minutes the moving traffic left no trace. Only the two men near the bottom left corner, one of them apparently having his boots polished by the other, remained in one place long enough to be visible. In 1816 Nicéphore Niépce, using paper coated with silver chloride, succeeded in photographing the images formed in a small camera, but the photographs were negatives, darkest where the camera image was lightest and vice versa, and they were not permanent in the sense of being reasonably light-fast; like earlier experimenters, Niépce could find no way to prevent the coating from darkening all over when it was exposed to light for viewing. Disenchanted with silver salts, he turned his attention to light-sensitive organic substances. Robert Cornelius, self-portrait, October or November 1839, an approximately quarter plate size daguerreotype. On the back is written, "The first light picture ever taken". One of the oldest photographic portraits known, 1839 or 1840, made by John William Draper of his sister, Dorothy Catherine Draper Not all early portraits are stiff and grim-faced records of a posing ordeal. This pleasant expression was captured by Mary Dillwyn in Wales in 1853. The oldest surviving photograph of the image formed in a camera was created by Niépce in 1826 or 1827. It was made on a polished sheet of pewter and the light-sensitive substance was a thin coating of bitumen, a naturally occurring petroleum tar, which was dissolved in lavender oil, applied to the surface of the pewter and allowed to dry before use. After a very long exposure in the camera (traditionally said to be eight hours, but now believed to be several days), the bitumen was sufficiently hardened in proportion to its exposure to light that the unhardened part could be removed with a solvent, leaving a positive image with the light areas represented by hardened bitumen and the dark areas by bare pewter. To see the image plainly, the plate had to be lit and viewed in such a way that the bare metal appeared dark and the bitumen relatively light. In partnership, Niépce in Chalon-sur-Saône and Louis Daguerre in Paris refined the bitumen process, substituting a more sensitive resin and a very different post-exposure treatment that yielded higher-quality and more easily viewed images. Exposure times in the camera, although substantially reduced, were still measured in hours. Niépce died suddenly in 1833, leaving his notes to Daguerre. More interested in silver-based processes than Niépce had been, Daguerre experimented with photographing camera images directly onto a mirror-like silver-surfaced plate that had been fumed with iodine vapor, which reacted with the silver to form a coating of silver iodide. As with the bitumen process, the result appeared as a positive when it was suitably lit and viewed. Exposure times were still impractically long until Daguerre made the pivotal discovery that an invisibly slight or "latent" image produced on such a plate by a much shorter exposure could be "developed" to full visibility by mercury fumes. This brought the required exposure time down to a few minutes under optimum conditions. A strong hot solution of common salt served to stabilize or fix the image by removing the remaining silver iodide. On 7 January 1839, this first complete practical photographic process was announced at a meeting of the French Academy of Sciences, and the news quickly spread. At first, all details of the process were withheld and specimens were shown only at Daguerre's studio, under his close supervision, to Academy members and other distinguished guests. Arrangements were made for the French government to buy the rights in exchange for pensions for Niépce's son and Daguerre and present the invention to the world (with the exception of Great Britain, where an agent for Daguerre patented it) as a free gift. Complete instructions were made public on 19 August 1839. Known as the Daguerreotype process, it was the most common commercial process until the late 1850s. It was superseded by the collodion process. After reading early reports of Daguerre's invention, Henry Fox Talbot, who had succeeded in creating stabilized photographic negatives on paper in 1835, worked on perfecting his own process. In early 1839, he acquired a key improvement, an effective fixer, from his friend John Herschel, a polymath scientist who had previously shown that hyposulfite of soda (commonly called "hypo" and now known formally as sodium thiosulfate) would dissolve silver salts. News of this solvent also benefited Daguerre, who soon adopted it as a more efficient alternative to his original hot salt water method. A calotype showing the American photographer Frederick Langenheim, circa 1849. Note that the caption on the photo calls the process "Talbotype". Talbot's early silver chloride "sensitive paper" experiments required camera exposures of an hour or more. In 1840, Talbot invented the calotype process, which, like Daguerre's process, used the principle of chemical development of a faint or invisible "latent" image to reduce the exposure time to a few minutes. Paper with a coating of silver iodide was exposed in the camera and developed into a translucent negative image. Unlike a daguerreotype, which could only be copied by rephotographing it with a camera, a calotype negative could be used to make a large number of positive prints by simple contact printing. The calotype had yet another distinction compared to other early photographic processes, in that the finished product lacked fine clarity due to its translucent paper negative. This was seen as a positive attribute for portraits because it softened the appearance of the human face. Talbot patented this process, which greatly limited its adoption, and spent many years pressing lawsuits against alleged infringers. He attempted to enforce a very broad interpretation of his patent, earning himself the ill will of photographers who were using the related glass-based processes later introduced by other inventors, but he was eventually defeated. Nonetheless, Talbot's developed-out silver halide negative process is the basic technology used by chemical film cameras today. Hippolyte Bayard had also developed a method of photography but delayed announcing it, and so was not recognized as its inventor. In 1839, John Herschel made the first glass negative, but his process was difficult to reproduce. Slovene Janez Puhar invented a process for making photographs on glass in 1841; it was recognized on June 17, 1852 in Paris by the Académie Nationale Agricole, Manufacturière et Commerciale. In 1847, Nicephore Niépce's cousin, the chemist Niépce St. Victor, published his invention of a process for making glass plates with an albumen emulsion; the Langenheim brothers of Philadelphia and John Whipple and William Breed Jones of Boston also invented workable negative-on-glass processes in the mid-1840s. In 1851 Frederick Scott Archer invented the collodion process. Photographer and children's author Lewis Carroll used this process. (Carroll refers to the process as "Tablotype" [sic] in the story "A Photographer's Day Out") Roger Fenton's assistant seated on Fenton's photographic van, Crimea, 1855 Herbert Bowyer Berkeley experimented with his own version of collodion emulsions after Samman[disambiguation needed] introduced the idea of adding dithionite to the pyrogallol developer. Berkeley discovered that with his own addition of sulfite, to absorb the sulfur dioxide given off by the chemical dithionite in the developer, that dithionite was not required in the developing process. In 1881 he published his discovery. Berkeley's formula contained pyrogallol, sulfite and citric acid. Ammonia was added just before use to make the formula alkaline. The new formula was sold by the Platinotype Company in London as Sulpho-Pyrogallol Developer. Nineteenth-century experimentation with photographic processes frequently became proprietary. The German-born, New Orleans photographer Theodore Lilienthal successfully sought legal redress in an 1881 infringement case involving his "Lambert Process" in the Eastern District of Louisiana. General view of The Crystal Palace at Sydenham by Philip Henry Delamotte, 1854 A mid-19th century "Brady stand" armrest table, used to help subjects keep still during long exposures. It was named for famous US photographer Mathew Brady. An 1855 cartoon satirized problems with posing for Daguerreotypes: slight movement during exposure resulted in blurred features, red-blindness made rosy complexions look dark. In this 1893 multiple-exposure trick photo, the photographer appears to be photographing himself. It satirizes studio equipment and procedures that were nearly obsolete by then. Note the clamp to hold the sitter's head still. A comparison of common print sizes used in photographic studios during the 19th century The daguerreotype proved popular in response to the demand for portraiture that emerged from the middle classes during the Industrial Revolution. This demand, which could not be met in volume and in cost by oil painting, added to the push for the development of photography. Roger Fenton and Philip Henry Delamotte helped popularize the new way of recording events, the first by his Crimean war pictures, the second by his record of the disassembly and reconstruction of The Crystal Palace in London. Other mid-nineteenth-century photographers established the medium as a more precise means than engraving or lithography of making a record of landscapes and architecture: for example, Robert Macpherson's broad range of photographs of Rome, the interior of the Vatican, and the surrounding countryside became a sophisticated tourist's visual record of his own travels. In America, by 1851 a broadside by daguerreotypist Augustus Washington was advertising prices ranging from 50 cents to $10. However, daguerreotypes were fragile and difficult to copy. Photographers encouraged chemists to refine the process of making many copies cheaply, which eventually led them back to Talbot's process. Ultimately, the photographic process came about from a series of refinements and improvements in the first 20 years. In 1884 George Eastman, of Rochester, New York, developed dry gel on paper, or film, to replace the photographic plate so that a photographer no longer needed to carry boxes of plates and toxic chemicals around. In July 1888 Eastman's Kodak camera went on the market with the slogan "You press the button, we do the rest". Now anyone could take a photograph and leave the complex parts of the process to others, and photography became available for the mass-market in 1901 with the introduction of the Kodak Brownie. The first durable color photograph, taken by Thomas Sutton in 1861 A practical means of color photography was sought from the very beginning. Results were demonstrated by Edmond Becquerel as early as 1848, but exposures lasting for hours or days were required and the captured colors were so light-sensitive they would only bear very brief inspection in dim light. The first durable color photograph was a set of three black-and-white photographs taken through red, green, and blue color filters and shown superimposed by using three projectors with similar filters. It was taken by Thomas Sutton in 1861 for use in a lecture by the Scottish physicist James Clerk Maxwell, who had proposed the method in 1855. The photographic emulsions then in use were insensitive to most of the spectrum, so the result was very imperfect and the demonstration was soon forgotten. Maxwell's method is now most widely known through the early 20th century work of Sergei Prokudin-Gorskii. It was made practical by Hermann Wilhelm Vogel's 1873 discovery of a way to make emulsions sensitive to the rest of the spectrum, gradually introduced into commercial use beginning in the mid-1880s. Two French inventors, Louis Ducos du Hauron and Charles Cros, working unknown to each other during the 1860s, famously unveiled their nearly identical ideas on the same day in 1869. Included were methods for viewing a set of three color-filtered black-and-white photographs in color without having to project them, and for using them to make full-color prints on paper. The first widely used method of color photography was the Autochrome plate, a process inventors and brothers Auguste and Louis Lumière began working on in the 1890s and commercially introduced in 1907. It was based on one of Louis Ducos du Hauron's ideas: instead of taking three separate photographs through color filters, take one through a mosaic of tiny color filters overlaid on the emulsion and view the results through an identical mosaic. If the individual filter elements were small enough, the three primary colors of red, blue, and green would blend together in the eye and produce the same additive color synthesis as the filtered projection of three separate photographs. A color portrait of Samuel Clemens (Mark Twain) by Alvin Langdon Coburn, 1908, made by the recently introduced Autochrome process Autochrome plates had an integral mosaic filter layer with roughly five million previously dyed potato grains per square inch added to the surface. Then through the use of a rolling press, five tons of pressure were used to flatten the grains, enabling every one of them to capture and absorb color and their microscopic size allowing the illusion that the colors are merged together. The final step was adding a coat of the light capturing substance silver bromide after which a color image could be imprinted and developed. In order to see it, reversal processing was used to develop each plate into a transparent positive that could be viewed directly or projected with an ordinary projector. One of the drawbacks of the technology is an exposure time of at least a second was required during the day in bright light and the worse the light is, the time required quickly goes up. An indoor portrait required a few minutes with the subject not being able to move or else the picture would come out blurry. This was because the grains absorbed the color fairly slowly and that a filter of a yellowish-orange color was added to the plate to keep the photograph from coming out excessively blue. Although necessary, the filter had the effect of reducing the amount of light that was absorbed. Another drawback was that the film could only be enlarged so much until the many dots that make up the image become apparent. Competing screen plate products soon appeared and film-based versions were eventually made. All were expensive and until the 1930s none was "fast" enough for hand-held snapshot-taking, so they mostly served a niche market of affluent advanced amateurs. A new era in color photography began with the introduction of Kodachrome film, available for 16 mm home movies in 1935 and 35 mm slides in 1936. It captured the red, green, and blue color components in three layers of emulsion. A complex processing operation produced complementary cyan, magenta, and yellow dye images in those layers, resulting in a subtractive color image. Maxwell's method of taking three separate filtered black-and-white photographs continued to serve special purposes into the 1950s and beyond, and Polachrome, an "instant" slide film that used the Autochrome's additive principle, was available until 2003, but the few color print and slide films still being made in 2015 all use the multilayer emulsion approach pioneered by Kodachrome. Main article: Digital photography Walden Kirsch as scanned into the SEAC computer in 1957 In 1957, a team led by Russell A. Kirsch at the National Institute of Standards and Technology developed a binary digital version of an existing technology, the wirephoto drum scanner, so that alphanumeric characters, diagrams, photographs and other graphics could be transferred into digital computer memory. One of the first photographs scanned was a picture of Kirsch's infant son Walden. The resolution was 176x176 pixels with only one bit per pixel, i.e., stark black and white with no intermediate gray tones, but by combining multiple scans of the photograph done with different black-white threshold settings, grayscale information could also be acquired. The charge-coupled device (CCD) is the image-capturing optoelectronic component in first-generation digital cameras. It was invented in 1969 by Willard Boyle and George E. Smith at AT&T Bell Labs as a memory device. The lab was working on the Picturephone and on the development of semiconductor bubble memory. Merging these two initiatives, Boyle and Smith conceived of the design of what they termed "Charge 'Bubble' Devices". The essence of the design was the ability to transfer charge along the surface of a semiconductor. It was Dr. Michael Tompsett from Bell Labs however, who discovered that the CCD could be used as an imaging sensor. The CCD has increasingly been replaced by the active pixel sensor (APS), commonly used in cell phone cameras. These mobile phone cameras are used by billions of people worldwide, dramatically increasing photographic activity and material and also fueling citizen journalism. The web has been a popular medium for storing and sharing photos ever since the first photograph was published on the web by Tim Berners-Lee in 1992 (an image of the CERN house band Les Horribles Cernettes). Today sites and apps such as Flickr, Picasa, Instagram, Imgur and PhotoBucket are used by many millions of people to share their pictures. ^ This date is commonly misreported as 1725 or 1727, an error deriving from the belief that a 1727 publication of Schulze's account of experiments he says he undertook about two years earlier is the original source. In fact, it is a reprint of a 1719 publication and the date of the experiments is therefore circa 1717. The dated contents page of the true original can be seen here (retrieved 21 February 2015)
Digital color printing • carbonless forms • Large format printing • Minnesota