Printing – Processes – Position or alignment
Patent
1993-07-15
1994-08-09
Eickholt, Eugene H.
Printing
Processes
Position or alignment
101142, 101183, 101230, 101410, 101247, 271 82, B41F 502
Patent
active
053355970
ABSTRACT:
Method and device for automatically and semi-automatically starting and stopping a sheet-turning operation and for sheet-format adjusting during sheet transport through a recto-and-verso printing press, wherein the sheets are singly transported in succession, by at least one transport drum, between two printing units, wherein, with the aid of remotely operated actuating and position-locking elements, gripper-control elements and sheet-holding segments of a storage drum are disposed so that sheets are transfered from the storage drum to a turning drum by the leading or trailing edge of the sheets, depending upon the mode of operation thereof, the grippers being, with respect to a suction device, adjusted to an appropriate sheet format. Adjustment of the sheet format can be performed both in recto-printing mode as well as in recto-and-verso printing mode.
REFERENCES:
patent: 3772990 (1973-11-01), Weisgerber
patent: 4014261 (1977-03-01), Becker
patent: 4122773 (1978-10-01), Wirz
patent: 4457231 (1984-07-01), Kawaguchi
patent: 4530283 (1985-07-01), Mathes et al.
patent: 4821643 (1989-04-01), Wieland
patent: 5031531 (1991-07-01), Becker
patent: 5033379 (1991-07-01), Becker
patent: 5076164 (1991-12-01), Becker
patent: 5085143 (1992-02-01), Becker
patent: 5105737 (1992-04-01), Becker
Eickholt Eugene H.
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Lerner Herbert L.
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