Electrophotography – Diagnostics – Consumable
Patent
1997-11-03
1999-07-13
Royer, William
Electrophotography
Diagnostics
Consumable
399 27, G03G 1508
Patent
active
059239182
ABSTRACT:
A developer-remaining-amount notifying device for notifying a remaining amount of a developer accommodated in a developer accommodating unit and used for developing a latent image formed on an electrophotographic photosensitive member is provided. The device includes a position detection member positionable near an upper surface of an accumulated layer of the developer accommodated in the developer accommodating unit, a regulating member, and a notification device. The regulating member regulates a moving direction of the position detection member such that the position detection member moves substantially linearly in accordance with a gradual decrease of the developer accommodated in the developer accommodating unit as the developer is used for development. The notification device notifies a remaining amount of the developer accommodated in the developer accommodating unit in accordance with a position of the position detection member.
REFERENCES:
patent: 4632534 (1986-12-01), Shimono
patent: 5134441 (1992-07-01), Nagata et al.
patent: 5510878 (1996-04-01), Noda et al.
"Toner Level Sensor", R. Feldeisen, Xerox Disclosure Journal, vol. 5, No. 1, Jan./Feb. 1980, p. 85.
Nakagawa Takao
Sasaki Shin-ichi
Tsuda Tadayuki
Canon Kabushiki Kaisha
Royer William
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