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Offset Lithography
Stone Lithography: drawing with a litho crayon
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Offset Lithography
Stone Lithography: rolling on the ink
More about inking a plate: http://entertainment.howstuffworks.com/stone-lithography5.htm
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Offset Lithography
Stone Lithography: multiple colors on separate plates
violet brown
Each plate is drawn and aligned by hand.
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Offset Lithography
Stone Lithography: multiple colors on separate plates
grey tint orange
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Offset Lithography
Stone Lithography: multiple colors on separate plates
deep grey mid grey
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Offset Lithography
Stone Lithography: multiple colors on separate plates
brown The Finished Print
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Offset Lithography
Stone Lithography: a small contemporary press
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Offset Lithography
Stone Lithography: a larger press
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Offset Lithography
Offset Lithography: printer’s marks
D. Trim marksE. Color barF. Tint bar
A. Star targetB. Registration markC. Page information
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Offset Lithography
Offset Lithography: color separations
Composite image printed on a color laser printer compared to four-color separations printed on an imagesetter.
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Offset Lithography
Offset Lithography: raster image processing (RIP) software
Raster Image Processing: the process and the means of turning vector digital information such as a PostScript file into a high-resolution raster image, and preparing color separations for plates.
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Offset Lithography
Offset Lithography: platesetter
A platesetter (or imagesetter) is a machine which receives a raster image from a raster image processor and in turn, creates a lithographic plate suitable for use on an offset press.
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Offset Lithography
Offset Lithography: polyester lithographic plate
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Offset Lithography
Offset Lithography: cylinders
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Offset Lithography
Offset Lithography: cylinders
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Offset Lithography
Offset Lithography: 2-color press
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Offset Lithography
Offset Lithography: 4-color press
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Offset Lithography
Offset Lithography: web press
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Offset Lithography
Offset Lithography: photo of the offset rollers
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Offset Lithography
Offset Lithography: halftone
greyscale in halftone, AKA screens
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Offset Lithography
Offset Lithography: halftone
angles
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Offset Lithography
Offset Lithography: halftone
printed photograph in glossy magazine
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Offset Lithography
Offset Lithography: halftone
zoom in
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Offset Lithography
Offset Lithography: halftone
zoom in to see rosettes
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Offset Lithography
Offset Lithography: spot colors
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Offset Lithography
Offset Lithography: spot colors
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Offset Lithography
Offset Lithography: 6-color press