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Lecture 9

HSC200H5 Lecture Notes - Lecture 9: Offset Printing, Planographic Printing, Mezzotint


Department
Biomedical Communications
Course Code
HSC200H5
Professor
Dave Mazierski
Lecture
9

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HSC200 Lecture 9 - Print History and Technologies
Print technologies;
Stencil
○ Embedded with outline
Planographic
○ Lithography (pressure and ink)
Photolithography
○ Offset lithography
Intaglio
Engraving
Etching
Mezzotint
Aquatint
Relief
Woodcut
Letterpress
Metalcut
Halftones;
● Tonal information converted into pattern of dots
● Size of dot conforms to % of grey value of original image
● Tonal information converted to dot pattern by imposition of halftone screen
● Resulting dot pattern is transferred to plate
● Dots are made to attract ink (like original lithographic grease pencil drawing) -
hydrophilic or hydrophobic ink
● Ink plate paper
● 4 color halftone printing
○ CYMK color print in printers
Spot colors;
● Bright and different colors that make something stand out and be noticeable - very
important in marketing
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