Guideplate assembly having substrate velocity control arrangemen

Details Guideplate assembly having substrate velocity control arrangemen Guideplate assembly having substrate velocity control arrangemen

1992-07-31

1995-03-28

Picard, Leo P.

Photocopying

Contact printing

Light boxes

271264, 271271, G03G 2100

Patent

active

054022215

ABSTRACT:
An imaging apparatus having a drive roller in an imaging zone includes a guideplate assembly for controlling the velocity of a substrate. The assembly has a guideplate with the inlet end disposed adjacent to a dispensing magazine and the outlet end disposed adjacent to the imaging zone. The guideplate assembly has a pushing finger movable therealong, a velocity-controlling sidewall and a spring-loaded biasing member disposed along opposed edges of the guideplate. The biasing member urges an edge of the substrate into frictional contact against a portion of the sidewall directly opposite the member while the pushing finger simultaneously engages the substrate to propel the substrate at a predetermined controlled velocity toward the outlet end of the guideplate against the frictional force imposed on the substrate by the sidewall. The predetermined controlled velocity is at least ninety percent of the rotational speed of the drive roller. Upon engagement with an idler roller in the imaging zone substantially no velocity perturbation is imparted to the substrate.

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