Transfer type electrophotographic duplicating apparatus

Claim 1

A transfer type electrophotographic duplicator, comprising: a transparent plate for supporting an original document; exposure means including a light source for illuminating said original document, an optical system for projecting the positive image of said original and a slit for transmitting the projected image movable between the ends of said transparent plate in parallel therewith; a driving member for driving said exposure means; a flexible sensitive film; a supply roller and take-up roller for winding respective opposite ends of said flexible sensitive film and rotatably pivoted at respective positions on opposite sides of said exposure means for supporting said flexible sensitive film parallel to said transparent plate; a driving roller for transferring said flexible sensitive film between said supply roller and said take-up roller; a charging device for charging said flexible sensitive film; means for feeding transfer paper; means for transferring the image formed on said flexible sensitive film to said transfer paper as a positive image; a device for developing the transferred positive image on said transfer paper; first switching means for stopping the rotation of said driving roller when said driving roller transfers said flexible sensitive film a distance a length longer than that of said original image; means for actuating said driving member with the stopping of said driving roller so as to drive said exposure means across said transparent plate; second switching means for stopping said driving member operated by said exposure means when said exposure means is driven to the other end of said transparent plate; third switching means for actuating said driving roller to transfer the flexible sensitive film from said take-up roller to said supply roller with the operation of said second switching means; and a member for actuating said means for feeding transfer papers in interlocking relationship with said third switching means.