Offset duplicating machine

Details Offset duplicating machine Offset duplicating machine

1978-06-19

1980-10-21

Pieprz, William

Printing

Rolling contact machines

Rotary

83659, 83341, 83346, 101 76, B41F 1354

Patent

active

042287359

ABSTRACT:
In an offset duplicating machine, an implement for marking, such as perforating, slitting, scoring or the like, each printed sheet conveyed through the machine; for transverse marking, a first marking strip is affixed lengthwise on an impression cylinder and a rotatable counter-roller is mounted adjacent and at a skew inclination to the impression cylinder; the counter-roller has an outer surface of hyperboloidal shape which allows the strip to progressively mark the passing sheet. By grooving the counter-roller or by varying the distance separating it from the impression cylinder, additional marking strips may be affixed to the impression cylinder to provide various marking configurations on the printed sheet.

REFERENCES:
patent: 10001 (1853-09-01), Allison
patent: 2683409 (1954-07-01), Dutro et al.
patent: 3068788 (1962-12-01), Bell et al.
patent: 3106121 (1963-10-01), Novick
patent: 3203292 (1965-08-01), Schmermund
patent: 3431847 (1969-11-01), Smith et al.
patent: 3524922 (1970-08-01), Johnson
patent: 3554070 (1971-01-01), Boyd
patent: 3583269 (1971-06-01), Kobayashi et al.
patent: 3593987 (1971-07-01), Garber
patent: 3611921 (1971-10-01), Jahn
patent: 4044666 (1977-08-01), Doncet

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