printing processes of d&g
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� Intaglio– Gravure
� Relief Printing– Letterpress– Flexography
� Offset Lithography� Screen Printing
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� Method of printing from a sunken surface
� Image carrier is usually handcrafted, using an engraving or etching technique
� Lines are used instead of ink cells
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� Paper Money� Postage stamps� Stock certificates� Fancy stationery
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� Example of intaglio printing� Depressed or sunken surface � Image carrier is a cylinder� 20% of all printing sales
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���������������� Cylinder has tiny cells that hold ink for printing
Prints from recessed area
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� Long runs� High quality printing � Very expensive� Millions of copies
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� Packaging� Publications
– Magazines• National Geographic
� Speciality– Money, Stamps, Wall paper
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� Smooth surface� Thin metal plate� Lithograph presses = thousands copies
per hour� Based on principle that water and oil
don’t mix
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� Offset lithography is the most widely used print process.
� About 40% of all print jobs are produced with offset printing.
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� It is an indirect printing process which means that an image is transferred, or offset, from one surface to another
� Right read, wrong read, right read
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� Newspapers, magazines, books, continuous business forms, unit sets, advertising pieces, brochures, posters, greeting cards, business cards, folders, mailers, laser sheets, integrated products, coupons, and art reproductions.
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� Printing from a raised surface – Potato Printing
� Letterpress� Flexography
– The most popular form
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�������������Platen Press
Rotary Press
Flatbed Cylinder Press
��������� Relief Printing� 1st hand carved wood� Books = $$� Moveable Metal type
– Use over and over again� Printing Press
– Johann Gutenberg– 1450
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� Printed from raised surface (relief)� Millions of impressions from 1 plate� Fast drying liquid inks� Not as high quality as gravure or
lithography
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Prints from raised surface
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� Forcing ink through a stencil covered fabric or wire mesh
� Mounted in a sturdy frame
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����1. Prints from raised surface2. Prints from recessed surface3. Prints from smooth surface4. Example of Relief Printing5. Example of Intaglio Printing6. Forcing ink though a stencil covered fabric/ wire
mesh7. About 40% of all printing jobs are printed using this
method8. Explain “wrong reading”9. What is the difference between sheet and web fed?10. Cheaper, but lower quality
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�����������1. Prints from raised surface: Relief Printing2. Prints from recessed surface: Intaglio 3. Prints from smooth surface: Lithography4. Example of Relief Printing: Letterpress or
Flexography5. Example of Intaglio Printing: Gravure6. Forcing ink though a stencil covered fabric/
wire mesh: Screen Printing
�����������7. About 40% of all printing jobs are printed
using this method: Lithography8. Explain “wrong reading”9. What is the difference between sheet and
web fed?
7. Cheaper, but lower quality: Flexography