For the music interval music interval semitone Image Halftoning introduction.svg frame Left Halftone dots. Right How the human eye would see this sort of arrangement from a sufficient distance. Halftone .... 2000 Chronicle, San Francisco. ref Halftone can also be used to refer specifically to the image ... range of color s or grey s, the halftone process reduces visual reproductions to a Binary numeral ... optical illusion that these tiny halftone dots are blended into smooth tones by the human ... possible by repeating the halftone process for each subtractive color most commonly using what is called ... Berkeley. ref The semi opaque property of ink allows halftone dots of different colors to create ... The first printed photo using a halftone, December 2, 1873. William Fox Talbot is credited with the idea of halftone printing. In the early 1850s, he suggested using photographic screens or veils ... on March 4, 1880 entitled A Scene in Shantytown with a crude halftone screen. ref name meggspage141 ..., the German Georg Meisenbach patented a halftone process in England. His invention was based on the previous ... cross lined screens. ref name twyman1970 The relief print relief halftone process proved almost immediately to be a success. The use of halftone blocks in popular journals became regular during the early 1890s. ref name twyman1970 The development of halftone printing methods for lithography appears ... stone , U.S. Patent 27,981, Apr 24, 1860. ref By the 1880s, Hoen was working on halftone methods ... isbn 9780849309007 page 389 url http books.google.com books?id AkByHKRGTsQC&pg PA389&dq halftone amplitude modulation&cd 2 v onepage&q halftone 20amplitude modulation&f falsehttp books.google.com books?id AkByHKRGTsQC&pg PA389&dq halftone amplitude modulation&cd 2 v onepage&q halftone 20amplitude modulation&f false ref Resolution of halftone screens align right cellpadding 1 style border 1px solid black colspan 2 style background navy color white Typical Halftone Resolutions Screen Printing 45 65 ... more details
In telecommunication , the term halftone characteristic has the following meanings In Fax facsimile systems, the relationship between the density of the recorded Facsimile copy and the density of the object, i.e. , the original. In facsimile systems, the relationship between the amplitude of the facsimile Signalling telecommunication signal to either the density of the object or the density of the recorded copy when only a portion of the system is under consideration. In an FM facsimile system, an appropriate parameter other than the amplitude is used. See also halftone References FS1037C MS188 Category Telecommunications terms ... more details
about multitone printing the Kenny G album Duotones File Volunteer Park Blues.jpg thumb right 250px A duotone image, made using black and blue inks in Photoshop . Duotone is a halftone reproduction of an image using the superimposition of one contrasting colour halftone traditionally black over another color halftone. This is most often used to bring out middle tones and highlights of an image. The most common colors used are blue, yellow, browns and reds. ref Pipes, Alan. Production For Graphic Designers 2nd Edition, Page 86 Prentice Hall Inc 1997 ref Now due to recent advances in technology, duotones, tritones, and quadtones can be easily created using image manipulation programs. History Duotones hail from Cyanotype and halftone prints. Color images in newspaper s and comic book s are usually halftone prints and occasionally duotones. Modern use Duotone color mode in Adobe s Photoshop uses an imaging process that computes the highlights and middle tones in a black and white image then allows the user to choose any color ink as the second color. Fake Duotone A fake duotone, or duograph, is done by printing a single color with a one color halftone over it. This process is generally not preferred over a regular duotone as it loses much of the contrast of the image. See also Sepia tone Cyanotype Halftone Printmaking References reflist External links http www.luminous landscape.com tutorials duotone.shtml Luminous Landscape Duotone Article http landscapephoto.us Articles DigitalBlackAndWhite.html LandscapePhoto.us Article on B W and toning http www.creativepro.com story howto 19805.html?origin story Creative Pro Article http printernational.org what is duotone.php Working with Duotone in Photoshop Category Photographic techniques Category Printing terminology photography stub af Dupleksdruk de Duplexdruck fr Bichromie ko nl Duotone pl Duotone sv Duotone ... more details
Unreferenced date December 2009 A continuous tone image is one where each color at any point in the image is reproduced as a single tone, and not as discrete halftone s, such as one single color for monochromatic prints, or a combination of halftones for color prints. The most common continuous tone images are digital photograph s. Film is a halftone medium. Citation needed reason please give a reliable source for this assertion Film is a halftone medium. date November 2010 An example of a continuous tone device is a CRT computer screen. Here, any pixel can represent any color, because the color components of the pixel are analog and can vary in infinite steps, and hence do not need halftones to make the colors. Of course, because the computer is a digital device, it cannot provide the CRT with infinite tone variations. In 24 bit color mode, it provides the monitor with 256 discrete steps for each color, for a total of 16,777,216 discrete colors. A purely analog video signal one that has not been manipulated by a computer of any kind can provide infinite tone variations inside its own gamut . A halftone device, in contrast, uses discrete dots of color, which at a certain distance look closely like the intended color. Examples of this are inkjet printers. Magazines and most printed material also use this technique to create the colors. See also Contone printing DEFAULTSORT Continuous Tone Category Printing terminology ... more details
The Dultgen halftone intaglio process is a photoengraving technique invented by, Arthur Dultgen and is widely used today in commercial colour work. Two positives are made from the Continuous tone copy, one through a halftone screen or a special contact screen and the other without a screen. A sheet of http photography.about.com library glossary bldef carbon.htm carbon tissue is then exposed first to the screened Negative photography positive , which produces an image of dots of varying sizes, then to the continuous tone positive, which produces differing degrees of hardening of the dot image. The array of dots vary not only in width but also in depth so as to extend the range of tonal values to be reproduced. This method thus uses two methods for controlling tonal values. References http www.freepatentsonline.com 4287537.html Category Printing terminology printmaking stub ... more details
Lines per inch LPI is a measurement of printing resolution in systems that use a halftone screen. Specifically, it is a measure of how close together the lines in a halftone grid are. Higher LPI indicates greater detail and sharpness. Printed magazine s and newspaper s often use a halftone system. Typical newsprint newsprint paper is not very dense, and has relatively high dot gain or Color bleeding printing color bleeding , so newsprint is usually around 85 LPI. Higher quality paper, such as that used in commercial magazines, has less dot gain, and can range up to 300 LPI with quality Coated paper glossy coated paper . In order to effectively utilize the entire range of available LPI in a halftone system, an image selected for printing generally must have 1.5 to 2 times as many samples per inch SPI . For instance, if the target output device is capable of printing at 100 LPI, an optimal range for a source image would be 150 to 200 SPI. Using fewer SPI than this would not make full use of the printer s available LPI using more SPI than this would exceed the capability of the printer, and would be effectively lost. Another device that uses the LPI specification is the graphics tablet . See also dots per inch pixels per inch samples per inch External links http desktoppub.about.com cs intermediate a meas resolution.htm Measuring Resolution Inch by Inch , an article about how LPI relates to DPI, SPI, and PPI Category Printing Category Units of density da Lpi es L neas por pulgada id Baris per inci ja Lpi ru Lines per inch sv LPI ... more details
. publisher Oxford University ref File Halftone example CMYK.png thumb Example of a halftone reproduction of a photograph. A major innovation was the development of halftone photography in the late 19th century. Halftone photography involves creating a reproduction of an original photograph by taking an image of it using a Photomechnical transfer camera PMT , with a halftone screen as an intermediary tool to create gradation in the final reproduction. Halftone screens are a plate or film, made up of a continuous pattern of small dots, and when used in a photomechanical transfer camera, the halftone screen serves as an image filter. The invention of halftone photography was an important milestone ... more details
refimprove date March 2011 Stochastic screening or FM screening is a halftone process based on Pseudorandomness pseudo random distribution of halftone dots, using frequency modulation FM to change the density of dots according to the gray level desired. Traditional amplitude modulation halftone screening is based on a geometric and fixed spacing of dots, which vary in size depending on the tone color represented for example, from 10 to 200 micrometre s . The stochastic screening or FM screening instead uses a fixed size of dots for example, about 25 micrometres and a distribution density that varies depending on the color s tone. The technique of stochastic screening, which has existed since the seventies, Citation needed date March 2011 has had a revival in recent times thanks to increased use of Computer to plate computer to plate CTP techniques. In previous techniques, computer to film , during the exposure there could be a drastic variation in the quality of the plate. It was a very delicate and difficult procedure that was not much used. Today, with CTP during the creation of the plate you just need to check a few parameters on the density and tonal correction curve. When you make a plate with stochastic screening you must use a tone correction curve, this curve allows one to align the tone reproduction of an FM screen to that of an industry standard. Given the same final presswork tone value, an FM screen utilizes more halftone dots than an AM XM screen. The result is that more light is filtered by the ink and less light simply reflects off the surface of the substrate. The result is that FM screens exhibit a greater color gamut than conventional AM XM halftone screen frequencies. The creation of a plate with stochastic screening is done the same way as is done with an AM XM screen. A tone reproduction compensation curve is typically applied to align the stochastic ... it eliminates screening moir . FM screening does not create rosette patterns. Halftone dot sizes ... more details
the input page into regions of text, regions of halftone images, and regions of other data. Regions .... Halftone images may be compressed by reconstructing the grayscale image used to generate the halftone and then sending this image together with a dictionary of halftone patterns. An overview of JBIG2 ... ref Technical details Typically, a bi level image consists mainly of a large amount of textual and halftone ... regions text, halftone, and generic regions. Each region is coded differently and the coding methodologies ... character, the prediction of the current pixel is more accurate. Halftones Halftone images ... the adjacent pixels. In the second method, descreening is performed on the halftone image so that the image ... of fixed sized tiny bitmap patterns contained in a halftone bitmap dictionary. This allows decoder to successfully render a halftone image by presenting indexed dictionary bitmap patterns neighboring with each other. Arithmetic entropy coding All three region types including text, halftone , and generic ... more details
Stephen Henry Horgan February 12, 1854 August 30, 1941 , was the inventor of the halftone process of engraving while working as the art director for the New York Herald . Biography It is said that he was fired from that job by Herald publisher James Gordon Bennett, Jr., who described the idea as idiotic. Horgan then went over to the rival Daily Graphic which debuted half tone printing in 1880. ref Current Biography 1941 , p408 ref References Reflist Persondata Metadata see Wikipedia Persondata . NAME Horgan, Stephen H. ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH February 12, 1854 PLACE OF BIRTH DATE OF DEATH August 30, 1941 PLACE OF DEATH DEFAULTSORT Horgan, Stephen H. Category 1854 births Category 1941 deaths Category American inventors US engineer stub ... more details
Contone is a printing method for improving the output quality of printing, usually from laser printers. Most printing techniques apply ink or toner on to the printing surface, usually paper in a pattern of dots to maximize the range of possible colors. Contone varies the dot size to achieve a simulation of continuous tone. See also Halftone Continuous tone External links http www.pcmag.com encyclopedia term 0,2542,t contone printer&i 40295,00.asp Entry for Contone Printer at PCMag http www.pctechguide.com glossary WordFind.php?wordInput Contone Entry for Contone at PCTechGuide DEFAULTSORT Contone Printing Category Printing terminology compu graphics stub ... more details
around halftone dots. Several factors can contribute to the increase in halftone dot area. Different ... the pressure better. Halftone dots can also be surrounded by a small circumference of ink, in an effect called rimming . Each halftone dot has a microscopic relief, and ink will fall off the edge ... effect on halftone reproduction. 1951 TAGA Proceedings, p 65 76. ref The Yule Nielsen effect is not strictly ... automatically compute the absorption of a halftone relative to the absorption of a solid print using the Murray Davies formula. Controlling dot gain Not all halftone dots show the same amount of gain ... coverage area of a halftone pattern The inked area fraction of the dot may be computed using ... covered area, and the halftone tint, as well as the value of the Yule Nielsen parameter, math .... However, it will tend to be larger when the halftone pattern in finer and when the substrate ... a model in their 1963 IARIGAI paper. ref name TollenaarErnst1963 D Tollenaar and P A H Ernst, Halftone ... the halftone pattern just appears solid on the print. This model, while simple, has dots with relatively ... more details
hazards involved in halftone photoengraving, the IPEU was also one of the first unions in the country ... Winter 2002 . Phillips, David C. Art for Industry s Sake Halftone Technology, Mass Photography and the Social .... http dphillips.web.wesleyan.edu halftone hyper.html External links Portal Organized labour http ... more details
No footnotes date April 2009 Image La Cara de Barcelona 001.jpg thumb right Roy Lichtenstein The Ben Day dots printing process, named after illustrator and printer Benjamin Henry Day, Jr. , is similar to Pointillism . Depending on the effect, color and optical illusion needed, small colored dots are closely spaced, widely spaced or overlapping. Magenta dots, for example, are widely spaced to create pink. 1950s and 1960s pulp comic book s used Ben Day dots in the four process colors CMYK color model cyan, magenta, yellow and black to inexpensively create shading and secondary color s such as green, purple, orange and flesh tones. File Benday Dots.svg left thumb Ben Day dots differ from halftone dots in that the Ben Day dots are always of equal size and distribution in a specific area. To apply the dots to a drawing the artist would purchase transparent overlay sheets from a stationery supplier. The sheets were available in a wide variety of dot size and distribution, which gave the artist a range of tones to use in the work. The overlay material was cut in the shapes of the tonal areas desired i.e. shadow or background or surface treatment and rubbed onto the specific areas of the drawing with a burnisher. When photograph ically reproduced as a line cut for letterpress printing , the areas of Ben Day overlay provided tonal shading to the printing plate. Ben Day dots were considered the hallmark of United States American artist Roy Lichtenstein , who enlarged and exaggerated them in many of his painting s and sculpture s. Other illustrator s and graphic design ers have used enlarged Ben Day dots in print media for a similar effect. See also Dither Halftone Category Printing terminology de Benday Dots ka pt Pontos Ben Day ... more details
Hugo Knudsen was a Danish printer, eponym of the Knudsen process for fine lithography , patented in 1915. He owned the Offset Printing Plate Company of New York. Invented and developed the lithographic halftone printing process which is still in use today ref http www.google.com patents?vid USPAT1151461&id fcJnAAAAEBAJ&printsec abstract&zoom 4&dq hugo knudsen PPA1912,M1 ref , and at the time it was superior to any other known method of photo and picture reproduction. This process was used by Edward Steichen . Close friend and brother in law of Alfred Kreymborg . Married to Beatrice Bea Bloom. References references External links http www.hagley.lib.de.us library collections manuscripts findingaids ISCC acc2188 2189.pdf Hugo Knudsen papers Persondata Metadata see Wikipedia Persondata . NAME Knudsen, Hugo ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Knudsen, Hugo Category American printers Category Year of birth missing Category Year of death missing US publish bio stub ... more details
stands for an ascending tetrachord composed of tone tone halftone, and nenano stands for a tetrachord composed of halftone augmented second halftone. The reform of the Byzantine neume notation in the early ... more details
Phototype can refer to a metal printing block, sometimes prepared using photogravure to reproduce a photograph in printing. The block may be a halftone image. Phototype can also refer to type set using a phototypesetting process to prepare pages for photo lithography . This process replaced hot metal typesetting . It was common throughout the 1970 s and 1980 s and was in turn rapidly rendered obsolete by modern systems which employ a raster image processor to render an entire page to a single high resolution digital image which is then photoset. Skin phototype depends on the amount of melanin pigment in the skin. It is assessed on a scale from 1 to 6. See Fitzpatrick scale for more details. border 1 Skin Phototype Typical Features Tanning ability I Pale white skin, blue hazel eyes, blond red hair Always burns, does not tan II Fair skin, blue eyes Burns easily, tans poorly III Darker white skin Tans after initial burn IV Light brown skin Burns minimally, tans easily V Brown skin Rarely burns, tans darkly easily VI Dark brown or black skin Never burns, always tans darkly Nuttall Category Photographic processes photography stub fr Phototypie ... more details
Autotype is a function in some computer applications or Computer program programs , typically those containing form web forms , which fills in a field once you have typed in the first few letters. Most of the time, such as in Internet Explorer , the entries that appear in the list depend on the form s name, so as to not propose street names in a last name field or vice versa. Autotype can also refer to automatically determining a peripheral peripheral s configuration or a program s Variable programming variables . Autotype is defined as a true representation of the original see O.E.D . The term autotype was coined in the late 19th century and referred to a process for making photographic prints using a Carbon print carbon process . Many autotype prints were produced and the process was popular well into the 20th century, particularly since autotype prints are very long lasting it is said that an autotype could last up to 500 years without fading . Autotype may also refer to halftone printing. See also Autocomplete Autofill Context sensitive user interface Combo box External links http www.pcmag.com encyclopedia term 0,2542,t autotype&i 38283,00.asp PCMag Encyclopedia entry http www.macdermidautotype.com autotype.nsf pages europeaboutHistory History of Autotype Category Text editor features Category Non impact printing software type stub ... more details
About the American newspaper The Daily Graphic the British newspaper of the same name The Graphic refimprove date November 2007 The Daily Graphic An Illustrated Evening Newspaper was the first American newspaper with daily illustrations. It was founded in New York in 1873 by a firm of Canadian engravers and began publication in March of that year. It continued publication until September 23, 1889. Highly illustrated, its lavish engravings included cartoons, reproductions of paintings, and illustrations of contemporary news events and notable personalities. It was similar in idea to the London newspaper The Graphic , which was founded in 1869 , and which commenced publication of its own Daily Graphic in 1889. Given the overlap in dates for the demise of the New York newspaper, and the commencement of the London one, it is possible that rights to the name were purchased by the English company. The first issue of the Daily Graphic in London was issued on January 4, 1890. It was illustrated with line drawings and woodcuts photoengraving and halftone was considered too complex a process for newspapers. ref William Gamble, Penrose s Annual. The Process Year Book & Review of the Graphic Arts , Volume XXIX, 1927 at 2 ref It was not connected with a different newspaper, the New York Evening Graphic , published from 1924 to 1932, and most famous for Walter Winchell s gossip column. References references DEFAULTSORT Daily Graphic Category Publications established in 1873 Category Defunct New York City newspapers Category Publications disestablished in 1889 cs Daily Graphic es The Daily Graphic sk Daily Graphic uk ... more details
Screenless lithography is a reprographic technique for halftoning dating to 1855, when the French chemist and civil engineer Alphonse Poitevin discovered the light sensitive properties of bichromated gelatin and invented both the photolithography and collotype processes. After the invention of the halftone screen in the 1880s, screenless lithography was abandoned. Until the end of World War II, two kinds of photomechanically made plates were used in lithography albumin plates and deep etch plates. Presensitized plates appeared in the 1950s, and wipe on plates appeared in the 1960s. By the mid 1960s research on screenless lithography had successfully developed in Europe to the stage where continuous tone plates could be manufactured for use with positive film images. Researchers discovered that under certain conditions the combination of fine plate grain and the newly developed plate coatings produced a plate capable of holding nearly all of the tones from a continuous tone positive . Commercial use of this plate has not flourished today it is still in limited use, primarily because the continuous tone printing plate technology is expensive and necessitates stringent quality control. Since the late 1960s artists and printers have been experimenting with these new plates, using photomechanical film and handmade positives made from thin translucent or transparent plastic sheets and a variety of drawing and painting materials. Screenless lithography has been incorrectly referred to as diazo plate lithography and PET film biaxially oriented Mylar lithography. References http www.nga.gov.au InternationalPrints Tyler Default.cfm?MnuID 9 Category Lithography ... more details
Lines per inch , a measurement of printing resolution in systems that use a halftone screen. Specifically, it is a measure of how close together the lines in a halftone grid are. Higher LPI indicates ... more details
Error diffusion is a type of halftone halftoning in which the quantization image processing quantization residual is distributed to neighboring pixel s that have not yet been processed. Its main use is to convert a multi level image into a binary file binary image, though it has other applications. Unlike many other halftoning methods, error diffusion is classified as an area operation, because what the algorithm does at one location influences what happens at other locations. This means Data buffer buffering is required, and complicates parallel processing . Point operations, such as ordered dither , do not have these complications. Error Diffusion has the tendency to enhance edges in an image. This can make text in images more readable than in other halftone halftoning techniques. Image Neighborhood watch bw.png frame An error diffused image Early history Richard Howland Ranger received United States patent 1790723 for his invention , Facsimile system. The patent, which issued in 1931, describes a system for transmitting image s over telephone or telegraph lines, or by radio. ref name Ranger1931 Richard Howland Ranger, Facsimile system. United States Patent 1790723, issued 3 February 1931. ref Ranger s invention permitted continuous tone photograph s to be converted first into black and white, then transmitted to remote locations, which had a pen moving over a piece of paper. To render black, the pen was lowered to the paper to produce white, the pen was raised. Shades of gray were rendered by intermittently raising and lowering the pen, depending upon the luminance of the gray desired. Ranger s invention used capacitors to store charges, and vacuum tube comparators to determine ... apparent resolution than halftone methods. This is especially beneficial with images with text ..., containing little detail. A cluster dot halftone image of the same resolution would be much less sharp. See also Floyd Steinberg dithering Halftone References references Category Printing terminology ... more details
to him about sixteen years earlier while working with line screens for the halftone process. ref ... http www.silentera.com PSFL data P Plastigrams1922.html SilentEra entry ref Halftone process Halftone ... inherent in the stone lithography process. Ives is sometimes referred to as the inventor of the halftone ... halftone process, but a considerable number of them, the earliest dating nearly as far back as the introduction ... use. Ives turned his attention to halftone processes in the late 1870s. The objectives ... plates, the structure of most printed halftone images has remained virtually unchanged. References ... more details
B0h Unicode & x2591 25 halftone , 177 B1h Unicode & x2592 50 halftone and 178 B2h Unicode & x2593 75 halftone in the code page 437 CP437 character set, one can achieve some interesting color combinations ... more details
About the former company and technology now part of Eastman Kodak Company other uses Creo , now part of Eastman Kodak Company , was a Burnaby , British Columbia , Canada based company involved in Reprography imaging and software technology for computer to plate and digital printing . ref http graphics.kodak.com ref The name derives from the Latin creo , I Invention create . Creo was acquired by Kodak on January 31, 2005. Like its predecessor, its current incarnation, http graphics.kodak.com Kodak Graphics Communications Group manufactures Offset printing printing plates , professional digital cameras , color and copydot Image scanner scanning systems inkjet , Tonejet drop on demand , and digital halftone Prepress proofing proofers Workflow workflow management software variable information workflow systems and Computer to film computer to film and computer to plate devices Citation needed date August 2010 . It had over 4,200 employees. It was founded in 1983 by Dan Gelbart who retired from Kodak in 2007 and Ken Spencer who retired from Creo in the 1990s , and was initially a manufacturer of optical tape recorder OTR devices and a vendor of laser imaging engines to the printing industry . Amos Michelson was the CEO from 1995 until it was sold to Kodak in 2005. In 2000, it acquired the worldwide graphic arts operations of Scitex , based out of Israel . Therefore to date, there are still many Israeli employee in its Burnaby office Citation needed date August 2010 . Some of Creo s main products are Prinergy , Prinergy Evo and InSite, a prepress workflow and file processing system Citation needed date August 2010 . References Reflist External links http graphics.kodak.com Official site http www.answers.com topic creo?cat biz fin History of Creo from Answers.com. Category Software companies of Canada Category Electronics companies of Canada Category Printing software Category Kodak Category Companies based in Burnaby ... more details
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