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Overprinting

From Wikipedia, the free encyclopedia
Knock-out
without trapping
Knock-out
with trapping
Overprinting

Comparison of aknock-outwith and withouttrapping,andoverprintingfor perfect and imperfectregistration.Rows are as follows:
  1. The cyan (lighter) plate,
  2. The magenta (darker) plate,
  3. Result with perfect registration (some monitors show slight misalignment), and
  4. Result with imperfect registration.

Overprintingrefers to the process of printing one colour on top of another inreprographics.This is closely linked to the reprographic technique of'trapping'.Another use of overprinting is to create arich black(often regarded as a colour that is "blacker than black" ) by printing black over another dark colour.[1][2]

It is also the term used in the production of envelopes customised to order by printing images (such as logos) and texts (such as slogans) on mass-produced machine-made envelopes; the alternative way of producing such envelopes is to print "on the flat" and then cut out the individual shapes and fold them to form the envelopes.[citation needed]However the latter method is generally only economically viable for large print runs offeringreturns to scale.[citation needed]

Overprinting also refers to the printing of additional information onto self-adhesive labels and product packaging. "Best Before", "Use By" dates and batch codes are printed in situ onto product packaging as the items are packed. Generally thermal printers, ink jet printers or laser printers are used.

References

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  1. ^Craig, James; Scala, Irene Korol (16 May 2012).Designing with Type, 5th Edition: The Essential Guide to Typography.Clarkson Potter/Ten Speed. p. 98.ISBN978-0-8230-8560-6.Retrieved29 September2021.
  2. ^Cohen, Sandee (10 July 2012).InDesign CS6: Visual QuickStart Guide.Peachpit Press. p. 136.ISBN978-0-13-300610-0.Retrieved29 September2021.