Register draw-in device

Details Register draw-in device Register draw-in device

1995-10-20

1998-02-17

Bennett, G. Bradley

Geometrical instruments

Gauge

Collocating

33614, 101DIG36, B65H 702, B65H 900

Patent

active

057180571

ABSTRACT:
A register draw-in device for sheet printing and embossing machines has two front or leading edge stops and a side stop, and position sensors (S1, S2, S3) for detecting print marks (P1, P2, P3) of a sheet (5). Two detectors (D1, D2) associated with the front stops (A1, A2) detect the sheet leading edge. The front stops are adjustable by control elements (M1, M2) until front print marks (P1, P2) on the sheet are detected by sensors (S1, S2). A control element (M3) then adjusts the side stop (A3) until a side print mark (P3) is detected by another sensor (S3). A system control (11) controls this register correction with the position sensors (S1, S2, S3), the detectors (D1, D2) and the control elements (M1, M2, M3). This accomplishes reliable automatic register correction for each individual sheet and therefore maximum print quality.

REFERENCES:
patent: 635061 (1899-10-01), Sabel
patent: 724116 (1903-03-01), Maley
patent: 1620343 (1927-03-01), Hacker
patent: 3921974 (1975-11-01), Miciukiewicz
patent: 4827626 (1989-05-01), Wieland
patent: 5129155 (1992-07-01), Hoffman et al.
patent: 5226366 (1993-07-01), Schlife et al.
patent: 5322273 (1994-06-01), Rapkin et al.

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