Electro-photographic device

Details Electro-photographic device Electro-photographic device

1992-12-21

1994-10-25

Fuller, Benjamin R.

Photocopying

Contact printing

Light boxes

355282, 219216, G03G 2100

Patent

active

053593928

ABSTRACT:
In an electro-photographic device for printing photographic images by fixing heated toner on printing paper. The electro-photographic device has a cover which is opened by an operator during maintenance and error recovery operations. Since the device has a paper sending unit provided on both the main body and the cover of the device, the paper sending unit has to be driven to recover synchronization after the operation is completed. On the other hand, the device cuts off power to the fixation unit for safety reasons during the operation which causes the fixation unit to cool. The present device is characterized in that the device starts the recovery procedure after the temperature of the fixation unit reaches an optimal point above the melting point of the toner so that the fixation unit is not damaged by solid toner.

REFERENCES:
patent: 3737159 (1973-06-01), Washio et al.
patent: 4260904 (1981-04-01), Horie et al.
patent: 4373802 (1983-02-01), Yuge et al.
patent: 4873549 (1989-10-01), Tada et al.

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