Electrophotographic reproduction apparatus having improved fuser

Details Electrophotographic reproduction apparatus having improved fuser Electrophotographic reproduction apparatus having improved fuser

1992-10-30

1993-12-07

Picard, Leo P.

Photocopying

Contact printing

Light boxes

219216, 355295, 430124, G03G 1520

Patent

active

052687260

ABSTRACT:
An electrophotographic printer (11) including a fuser (16, 17) for fusing a toned image onto an envelope (13) passing through a fuser nip (14). Wrinkling and treeing of the envelope (13) is substantially eliminated by removing the pressure on the envelope (13) in the fuser nip (14) for one or more brief intervals during the fusing process. To do this, a solenoid (21) is intermittently driven to remove the force of a spring (18) urging the fuser rolls (16, 17) together.

REFERENCES:
patent: 4119831 (1978-10-01), Sato
patent: 4232959 (1980-11-01), Ateya et al.
patent: 4753543 (1988-06-01), Mochimaru et al.
patent: 4873553 (1989-10-01), Inaba
patent: 4958195 (1990-09-01), Firth, III et al.

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