Printing – Rolling contact machines – Rotary
Patent
1989-12-11
1991-11-12
Burr, Edgar S.
Printing
Rolling contact machines
Rotary
101148, 101352, B41F 1324
Patent
active
050638440
ABSTRACT:
An offset rotary machine including a printing unit with two plate cylinders which are arranged at a predetermined distance from each other. The two plate cylinders are mounted so as to be engageable and disengageable alternatingly against a rubber blanket cylinder and an inking mechanism. A single inking roller is pressed against the engaged plate cylinder. Only a single dampening roller of the dampening mechanism is pressed against the inking roller. The alternating engagement of the two plate cylinders makes it possible to carry out a flying plate exchange while maintaining the ink/water balance and, consequently, preventing a misprint until the ink/water balance has been reached. Moreover, an additional printing unit, inking mechanism and dampening mechanism is not necessary for the flying plate exchange.
REFERENCES:
patent: 4370926 (1983-02-01), Hattori
patent: 4385559 (1983-05-01), Jarach
patent: 4458591 (1984-07-01), Guaraldi
patent: 4567827 (1986-02-01), Fadner
patent: 4573407 (1986-03-01), Jeschke
patent: 4610201 (1986-09-01), Jeschke
patent: 4621575 (1986-11-01), Jeschke
patent: 4913943 (1990-04-01), Goossen
patent: 4922818 (1990-05-01), Junghans
Burr Edgar S.
Keating Joseph R.
Simom S.A.
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