Convertible multi-color printing machine, especially for the pri

Details Convertible multi-color printing machine, especially for the pri Convertible multi-color printing machine, especially for the pri

1989-05-04

1991-04-16

Fisher, J. Reed

Printing

Multicolor

Rotary machines

101179, 101182, B41F 516, B41F 522, B41L 1510

Patent

active

050073397

ABSTRACT:
The printing machine has two multi-color printing units (I, II) of essentially identical construction, each composed of a first blanket cylinder (4, 14), of a second blanket cylinder (7, 17), of a plate cylinder (5, 15) and of an image transfer cylinder (6, 16). In the offset-printing position, the second blanket cylinder (7, 17) inked by offset plate cylinders (8) rests against the first blanket cylinder (4, 14), while in the collect-printing position it is moved away from this and inked by color selector cylinders. In the collect-printing position, the plate cylinder (5, 15) carries a collect-printing plate, of which the image inked by the first cylinder (7, 17) is transferred to the first blanket cylinder (4, 14) via the image transfer cylinder (6, 16). In the offset-printing position, the plate cylinder is inoperative. Furthermore, in the two printing positions, the image transfer cylinder (6, 16) interacts with the plate cylinder (10, 20) of an additional single-color printing unit, the image of which is likewise transferred to the first blanket cylinder (4, 14). The paper runs between the first blanket cylinders (4, 14), pressed against one another, of the two printing units and receives a simultaneous recto-verso print. The plate cylinder can also rest against the first blanket cylinder and in the offset-printing position, with the image transfer cylinder moved away, belong to the additional single-color printing unit.

REFERENCES:
patent: 4640189 (1987-02-01), Hernandez
patent: 4651644 (1987-03-01), Kaempfe et al.

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