Printer having document transfer device with plate-shaped stop m

Details Printer having document transfer device with plate-shaped stop m Printer having document transfer device with plate-shaped stop m

1992-03-16

1993-02-23

Burr, Edgar S.

Typewriting machines

Sheet or web

Including aligning of sheet edge prior to typing

400579, 400636, 271245, B41J 1328

Patent

active

051884712

ABSTRACT:
A printer, comprising a print head; a paper path for a document to be printed; and a document transfer device arranged in connection with the paper path. The document transfer device is provided with parallel drive pulleys (5) gripping the underside of the document (3) and positioned on at least two sequential shafts and with spring-actuated pressure rollers (8) pressing the document from above against the drive pulleys, at least a part of the pressure rollers being possibly provided with drive and the rollers being arranged in parallel, like the drive pulleys, and sequentially above the drive pulleys to form pairs of drive pulleys and pressure rollers. The document transfer device further includes a plate-shaped stop means (9) to be guided to the paper path for straigthening the document. The stop member is positioned between the middle line through the axes of the rollers (8) positioned in the first row of the pairs of drive pulleys and pressure rollers and the rear line of said rollers.

REFERENCES:
patent: 3652083 (1972-03-01), Bosshardt
patent: 3855041 (1974-12-01), Kunisch
patent: 4805892 (1989-02-01), Calhoun
patent: 4971468 (1990-11-01), Yokoi
patent: 4986528 (1991-01-01), Watarai et al.
patent: 4988226 (1991-01-01), Ito
patent: 5074545 (1991-12-01), Handa
patent: 5088848 (1992-02-01), DeFalco et al.
Kobus, "Integral Registration and Sheet Feeder Actuation", Xerox Disclosure Journal vol. 7, No. 2 1982.

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