Printing – Rolling contact machines – Rotary
Patent
1992-07-07
1993-09-21
Burr, Edgar S.
Printing
Rolling contact machines
Rotary
101375, 428909, 492 18, B41F 702
Patent
active
052459233
ABSTRACT:
An offset printing unit (10) for printing an inked image on sheet material (30) comprises a rotatable plate cylinder (12) and a rotatable blanket cylinder (14). The plate cylinder (12) supports a printing plate (18) which defines the inked image. A tubular printing blanket (20) is received telescopically over the blanket cylinder (14). The printing unit (10) further comprises a frame (16) and a motor (26). The frame (16) supports the plate cylinder (12) and the blanket cylinder (14) in positions for the printing plate (18) to transfer the inked image onto the tubular printing blanket (20) at a nip (28) between the cylinders (12, 14) when the cylinders (12, 14) are rotating. The motor (26) rotates the plate cylinder (12) and the blanket cylinder (14) to transfer the inked image to the tubular printing blanket (20). The tubular printing blanket (20) is supported on the blanket cylinder (14) to rotate relative to the blanket cylinder (14) when the cylinders (12, 14) are being rotated by the motor (26) in a printing operation.
REFERENCES:
patent: 3146709 (1964-09-01), Bass et al.
patent: 3881045 (1975-04-01), Strunk
patent: 4174244 (1979-11-01), Thomas et al.
patent: 4913048 (1990-04-01), Tittgemeyer
patent: 4932324 (1990-06-01), Pinkston et al.
patent: 4953461 (1990-09-01), Gaffney et al.
Burr Edgar S.
Funk Stephen R.
Heidelberg Harris Inc.
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