Image forming apparatus having device for determining moisture a

Details Image forming apparatus having device for determining moisture a Image forming apparatus having device for determining moisture a

1989-06-19

1993-07-06

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355214, 355215, 355246, G03G 1504

Patent

active

052258726

ABSTRACT:
An image forming apparatus includes an image bearing member; an image forming device for forming a latent image on the image bearing member, the image forming device including a developing device for developing with a developer the latent image formed on the image bearing member; a detecting device for detecting an ambient condition at predetermined intervals; a device for determining the state of current moisture absorption of the developer on the basis of a current ambient condition at a current time, past state of moisture absorption of the developer at the predetermined period of time before the current time and an ambient condition determined on the basis of the past state of moisture absorption and a control device for controlling the image forming device in accordance with the current state of moisture absorption of the developer determined by the determining device.

REFERENCES:
patent: 3814516 (1974-06-01), Whited
patent: 4134147 (1979-01-01), Watanabe
patent: 4314755 (1982-02-01), Kinashi
patent: 4521103 (1985-06-01), Ohtsuka et al.
patent: 4610530 (1986-09-01), Lehmbeck et al.
patent: 4676627 (1987-06-01), Ohno
patent: 4888618 (1989-12-01), Ishikawa
patent: 4912515 (1990-03-01), Amemiya et al.
patent: 5029314 (1991-07-01), Katsumi et al.

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