Ricoh AP3850C Service Manual download pdf (Page 169)

A-5 Desktop Color Primer

Printing techniques

Until recently, most color printing was done on printing presses using one of several

printing techniques—offset lithography, ﬂexography, and gravure, to name a few.

All traditional printing techniques require lengthy preparation before a print run can

take place. Short-run color printing, including Fiery 3850C printing, eliminates most

of this preparation. By streamlining the process of color printing, the Fiery 3850C

makes short print runs economically feasible.

In contemporary offset lithographic printing, digital ﬁles from desktop computers are

output to an imagesetter, which creates ﬁlm separations. The ﬁlm is used to make a

prepress proof, which is an accurate predictor of the ﬁnal print job and allows you to

make corrections before going to press. Once the proof is approved, the printer makes

plates from the ﬁlm and runs the print job on the press.

With a Fiery 3850C, you simply print the ﬁle. The Fiery 3850C processes the

PostScript information in the ﬁle and sends four bitmaps (one each for cyan,

magenta, yellow, and black) to the print engine. The ease of Fiery 3850C printing

makes possible experimentation that would be too costly on press, allowing unlimited

ﬁne-tuning of color and design elements.

Imagesetter Film Proof PressDesktop Print run

computer

Desktop

computer

Print device Color prints

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Ricoh AP3850C Service Manual Page 169