Printing – Rolling contact machines – Rotary
Patent
1987-06-29
1988-05-31
Fisher, J. Reed
Printing
Rolling contact machines
Rotary
101228, B41F 1304, B41F 1354
Patent
active
047473479
ABSTRACT:
An attachment for an offset press, of the type adapted to process individual sheets of paper, to enable it to feed and print continuous form in proper registery. In one embodiment the invention includes a paper feeding station downstream of the press and a separate registration station upstream of the press. The paper feeding station employs an adjustable rotating circumferential segment, driven off the press, cooperating with a draw roller to intermittently engage the continuous form paper, draw a predetermined increment through the press and then disengage from the paper. In another embodiment the paper feeding function is accomplished by the printing blanket which discontinuously engages the paper and feeds it through the press in predetermined increments thereafter disengaging from the paper after each of the increments is fed. In both embodiments the registration station maintains continuous engagement with the paper by means of a freely rotatable, endless pin belt which engages the pin holes of the paper and individually registers each increment of paper to the press while the paper is disengaged by the paper feeder. A rotating disc, operatively connected to the pin belt, includes a plurality of windows for receiving a solenoid activated, wedge-shaped finger which arrests and positions the disc and paper in one of a plurality of predetermined positions. A sensor associated with the paper feeder detects when the paper is engaged or disengaged and generates a signal to the solenoid.
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Continuous Graphics, Inc.
Fisher J. Reed
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