Photocopying – Contact printing – Light boxes
Patent
1988-01-12
1989-10-31
Grimley, A. T.
Photocopying
Contact printing
Light boxes
271184, 271258, 271902, 355313, 355319, G03G 1500, G03G 2100, B65H 2900, B65H 702
Patent
active
048780871
ABSTRACT:
An image forming apparatus having a primary passage extending from a feeding unit which stores sheets up to a discharge tray which receives sheets with images formed thereon through an image forming unit which forms images on the sheet, and a secondary passage for returning each sheet which has been image-formed within the image forming unit to an upstream end of the primary passage from a downstream end thereof to form another image on the already image-formed side of the sheet or on the opposite side thereof. The secondary passage is formed so that in the event of jam or sheet therein, a portion of the secondary passage is exposed to the exterior by means of a guide plate capable of being opened and closed. Jam of sheet in the secondary passage is detected by a sensor and the jammed sheet is reverse fed up to the above guide plate by a drive which is for the conveyance of sheet in the secondary passage, then the guide plate is opened to permit removal of the thus reverse-fed sheet to the exterior of the apparatus.
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Sakai Toshiyuki
Sakata Toshio
Grimley A. T.
Minolta Camera Kabushiki Kaisha
Pipala E. J.
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