Self-energizing copier document pressure roll

Details Self-energizing copier document pressure roll Self-energizing copier document pressure roll

G - Physics

03

G

314/29

G03G 15/00 (2006.01) G03B 27/62 (2006.01)

Patent

CA 1164927

-1- ABSTRACT A copier document apparatus (10) for feeding original document sheets (21) to and from a registration position at an imaging station (20) of a copier with a reversible direction of motion document feeding belt (14) having one flight (18) of the belt overlying the imaging station for document feeding and a second flight (22) spaced therefrom, and apparatus (32) for applying pressure to an area of the back of the first belt flight (18), which pressure is substantially changed in one direction of motion of the belt relative to the other direction of belt motion, to provide decreased pressure between the belt and the document for registration (23) but increased pressure for positive document ejection, in which this pressure change is self actuating and solely from the reversal movement of the belt by a frictional actuating means (30) which is engaged and moved without slippage by the second (upper) belt flight (22) through a connecting lever system (24) connecting the frictional actuating system (30) with the pressure system (32) so as to automatically pivot the pressure system (32) into or out of engagement with the first belt flight (18) automatically in response to the reversal of direction of the second belt flight (22).

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