Device for a paper transport in an office machine in particular

Details Device for a paper transport in an office machine in particular Device for a paper transport in an office machine in particular

1988-02-24

1990-01-30

Pieprz, William

Typewriting machines

Sheet or web

For feeding plural record media concurrently or selectively

4006162, 226 74, B41J 1150

Patent

active

048969796

ABSTRACT:
A device for a paper transport in an office machine, in particular in a matrix printer, presupposes the presence of side plates (1, 2), wherein a print-support surface (7) is supported and, in addition, a friction drive including a roller pair for individual sheets (9) to be transported or, respectively, endless webs (10) without edge perforation, and tractors (13) provided in pairs, which operate in push and pull operation. In order to provide a universal paper transport device for different kinds of paper, where the respective paper type is held ready, it is disclosed that the tractor pair (14a, 14b) can be driven with a tractor gear wheel (21) fixed against rotation on the tractor shaft (17), which tractor gear wheel (21) can be put in a force-transmitting connection with the paper drive motor (22) and where the tractor pair (14a, 14b) can be tilted with a lever drive (31) relative to the paper guide plane (32) in each case into an about tangential direction (33 ) relative to the circumferential upper side (36) or to the circumferential lower side (34) of the print-support surface (7).

REFERENCES:
patent: 4440516 (1984-04-01), Rosenthal et al.
patent: 4571103 (1986-02-01), Takeo et al.
patent: 4572419 (1986-02-01), Hirata
patent: 4662767 (1987-05-01), Pimintel
patent: 4742946 (1988-05-01), Hamamichi et al.

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