Image forming apparatus for preventing toner deterioration cause

Details Image forming apparatus for preventing toner deterioration cause Image forming apparatus for preventing toner deterioration cause

1997-03-26

1999-07-20

Grimley, Arthur T.

Electrophotography

Diagnostics

Consumable

399 37, 399 88, 399 94, G03G 1500

Patent

active

059266678

ABSTRACT:
An image forming apparatus suppresses a thermal deterioration of toner. The image forming apparatus has a toner box containing toner for developing an electrostatic latent image formed on a photosensitive drum, and at least one electric circuit, for example, a drive circuit for a polygon motor or a toner sensor, disposed near the toner box. The image forming apparatus judges, based on predetermined conditions, whether supplying electric power to the electric circuit is necessary. If the judgment is affirmative, electric power is supplied to the at least one electric circuit. Alternatively, if the judgment is negative, electric power is not supplied to the at least one electric circuit. By so doing, it is possible to suppress the rise in temperature of the toner, which deteriorates the toner quality. Thus, the image forming apparatus obviates a negative influence that degrades the image quality.

REFERENCES:
patent: 5101228 (1992-03-01), Nishikawa et al.
patent: 5457516 (1995-10-01), Kim
patent: 5506665 (1996-04-01), Ishida et al.

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