Image forming apparatus capable of controlling heating units und

Details Image forming apparatus capable of controlling heating units und Image forming apparatus capable of controlling heating units und

1994-07-18

1997-06-17

Braun, Fred L.

Electrophotography

Control of electrophotography process

Control of fixing

G03G 1520

Patent

active

056406460

ABSTRACT:
When a time mode is selected, after power to the apparatus as a whole is cut off, the time until the scheduled start of supply of power to the heating units is counted. When the scheduled time of the start of supply of power is reached, power starts to be supplied to the heating units. When the continuous mode is selected, instruction is given to continue supplying power to the heating units even when power to the apparatus as a whole is turned off. Also, when a service start time is input, the next build-up time is predicted or the amount of power previously supplied to the heating units is changed based on the changes along with time in the temperature, humidity, and other facets of the internal environment of the heating units measured up until then, a predetermined amount of power starts to be supplied to the heating units in advance of the service start time by the predicted build-up time, the changes along with time in the internal environment from the start of supply of power to the heating heats up until when the print ready region is reached are measured and stored, and power starts to be supplied to the apparatus as a whole when the service start time is reached.

REFERENCES:
patent: 4615609 (1986-10-01), Honma
patent: 4740671 (1988-04-01), Kuroda et al.
patent: 4878092 (1989-10-01), Arai
patent: 5220389 (1993-06-01), Kishimoto et al.

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