Photocopying – Contact printing – Light boxes
Patent
1994-07-07
1996-01-23
Royer, William J.
Photocopying
Contact printing
Light boxes
355246, 355285, 355311, G03G 2100
Patent
active
054869030
ABSTRACT:
The present invention has a detection device for detecting the thickness of a recording material by using an air capacitor, and an image forming device for forming an image on the recording material on the basis of the output from the detection device. The present invention can thus prevent omission in transfer and fixing failure, thereby forming a good image.
REFERENCES:
patent: 4549803 (1985-10-01), Ohno et al.
patent: 4610530 (1986-09-01), Lehmbeck et al.
patent: 4634262 (1987-01-01), Imaizumi et al.
patent: 4873553 (1989-10-01), Inaba
patent: 5351114 (1994-09-01), Matsuno
Kanno Satoru
Katsumi Toru
Takeuchi Ikuo
Canon Kabushiki Kaisha
Royer William J.
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