Printing media feeding apparatus for printers

Details Printing media feeding apparatus for printers Printing media feeding apparatus for printers

1991-07-31

1992-10-27

Eickholt, Eugene H.

Typewriting machines

Sheet or web

For feeding plural record media concurrently or selectively

226143, 400618, 400624, 400636, B41J 1150

Patent

active

051583810

ABSTRACT:
A printer includes a printing portion and means for defining a sheet path along which a printing media passes through the printing portion. The sheet path defining means includes a pair of first feed rollers arranged upstream of the printing portion with respect to a normal feed direction of the printing media with the first rollers being adapted to be driven in the normal or a reverse direction. The first rollers further are driven at a predetermined speed with a predetermined speed force at least in a normal direction. A pair of second feed rollers is arranged downstream of the printing portion which are driven only in the normal direction at a feed speed slightly higher than the predetermined feed speed with a feed force slightly smaller than the predetermined feed force. The second rollers further are freely rotatable in the reverse direction.

REFERENCES:
patent: 3746142 (1973-07-01), Hepp et al.
patent: 4927277 (1990-05-01), Nikawa
patent: 4971468 (1990-11-01), Yokoi
patent: 4995745 (1991-02-01), Yokoi et al.
patent: 4995746 (1991-02-01), Rosenthal
patent: 5007752 (1991-04-01), Yasumi et al.
patent: 5040911 (1981-08-01), Sanders, Jr. et al.
"Preventing the Jamming of the Paper Due to Buckling" IBM Tech. Discl. Bulletin, vol. 30, No. 2, Jul. 1987, pp. 623-625.
"Dual-Motor Forms Feed Drive" IBM Tech. Discl. Bulletin, vol. 22, No. 7, Dec. 1979, pp. 2616-2617.

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