Printing press

Details Printing press Printing press

2005-04-05

2005-04-05

Hirshfeld, Andrew H. (Department: 2854)

Printing

Inkers

Roller

C101S352060, C101SDIG029

Reexamination Certificate

active

06874416

ABSTRACT:
A printing press comprises an oscillating roller capable of rotating circumferentially and moving axially in a reciprocating manner, and does rainbow printing on a sheet, supplied from a feeder, in a printing unit. The printing press includes an oscillation width control device and an oscillation frequency control device for exercising control such that the oscillating roller moves axially in a reciprocating manner when printing is started in a state in which the axially moving motion of the oscillating roller is at a standstill. The printing press can automatically start the oscillating motion of the ink oscillating roller when printing is started from the state of the oscillating motion of the oscillating roller being stopped at the time of ink conditioning in rainbow printing, thereby decreasing the number of defective sheets and improving the ease of operation.

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