Proofing press

Details Proofing press Proofing press

1975-09-17

1977-04-05

Eickholt, E.H.

Printing

Rolling contact machines

Rotary

101328, 101352, B41F 1324

Patent

active

040155242

ABSTRACT:
Preparatory to a printing run, a printed sample, i.e. proof, is produced on a proofing press using the ink and paper substrate contemplated for the printing run so that the printing quality, ink color, and other such aspects can be studied and, if need be, any adjustments made. In the within improved proofing press, the ink film to be tested is transferred from a driven roller to a similarly driven roller carrying the test paper substrate by a pivotally traversable ink-transfer surface of an elastomeric construction material, such that said driven rollers are each powered in rotation at a selected speed simulating the printing speed of the contemplated printing run, and the extent to which the elastomeric transfer surface is allowed to be compressed permits effective simulation of the contemplated printing run printing pressure. Accordingly, the proof sample of the within proofing press contributes to a more accurate forecast of the printing quality, etc. of the contemplated printing run.

REFERENCES:
patent: 1470194 (1923-10-01), Robinson
patent: 1922533 (1933-08-01), Elliott
patent: 2026434 (1935-12-01), Quick et al.
patent: 2682218 (1954-06-01), Baumgartner
patent: 2716942 (1955-09-01), Timson et al.
patent: 2868122 (1959-01-01), Faeber
patent: 3107608 (1963-10-01), Ward
patent: 3370533 (1968-02-01), Westra et al.
patent: 3598050 (1971-08-01), Thompson

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