Electrophotographic device and method for shortening a print tim

Details Electrophotographic device and method for shortening a print tim Electrophotographic device and method for shortening a print tim

1993-08-10

1995-06-20

Royer, William J.

Photocopying

Contact printing

Light boxes

219216, 355208, G03G 1520, G03G 2100

Patent

active

054264944

ABSTRACT:
In an electrophotographic device, a heat roller is heated by a heater, and upon instruction of start of a print operation, the temperature Tf of the heat roller is detected by a temperature sensor. When the temperature Tf is above a predetermined temperature Tv at which high voltage is applied, the high voltage is applied. Thereafter, the temperature Tf of the heat roller is detected again, and if the temperature Tf is above a predetermined temperature Ts at which the sheet is fed, the solenoid clutch is switched on to feed the sheet. If the print operation is not terminated, the temperature of the heat roller is detected again, and it is checked whether the temperature of the heat roller is above a predetermined fixing temperature Tp.

REFERENCES:
patent: 4324486 (1982-04-01), Nishikawa
patent: 5073799 (1991-12-01), Watanabe
patent: 5280328 (1994-01-01), Goto et al.
patent: 5303015 (1994-04-01), Sato

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