Photocopying – Contact printing – Light boxes
Patent
1993-11-16
1994-11-15
Smith, Matthew S.
Photocopying
Contact printing
Light boxes
271259, 355203, 355205, 355208, 355308, G03G 1500
Patent
active
053653220
ABSTRACT:
An image forming apparatus includes an image bearing member, a transfer unit for transferring an unfixed image on the image bearing member onto recording material, and a fixing rotating member for fixing the unfixed image while grasping and conveying the recording material supporting the unfixed image. The apparatus further includes a first detector, provided at a side downstream from a grasping portion of the fixing rotating member in the moving direction of the recording material, for detecting the recording material, and a second detector, provided at a side upstream from the grasping portion of the fixing rotating member in the moving direction of the recording material, for detecting the recording material. The distance between the first and second detectors is less than the minimum length in the conveying direction of ordinary recording material used in the apparatus.
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patent: 4684235 (1987-08-01), Kohmoto et al.
patent: 4937622 (1990-06-01), Makiura
patent: 4987448 (1991-01-01), Chikama
patent: 5030991 (1991-07-01), Zaitsu et al.
patent: 5034771 (1991-07-01), Makita
Adachi Nobukazu
Hamada Tatsuo
Canon Kabushiki Kaisha
Smith Matthew S.
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