Image forming apparatus which calculates toner consumption in ac

Details Image forming apparatus which calculates toner consumption in ac Image forming apparatus which calculates toner consumption in ac

1995-11-17

1998-03-03

Grimley, Arthur T.

Electrophotography

Diagnostics

Consumable

399 49, 399 58, G03G 1508

Patent

active

057246270

ABSTRACT:
In an electrophotographic image forming apparatus, a correction coefficient corresponding to each density level of toner consumption of a developing device is determined in accordance with a selected tone correction method, and/or the ratio of the emission period to the non-emission period of a light source. A toner consumption calculator multiplies the correction coefficients by the number of pixels of each density level of document image data, and determines the amount of toner consumed by the developing device from the sum total value of the multiplication results determined for each density level. A toner replenishment device resupplies toner to the developing device based on the determined amount of consumed toner. As a result, a constant toner concentration Tc normally can be maintained because toner is resupplied based on the calculated amount of toner consumption.

REFERENCES:
patent: 5146274 (1992-09-01), Hattori et al.
patent: 5202769 (1993-04-01), Suzuki
patent: 5305057 (1994-04-01), Hattori et al.
patent: 5420614 (1995-05-01), Fukui et al.

Affiliated with

Also associated with

Rating

Image forming apparatus which calculates toner consumption in ac does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image forming apparatus which calculates toner consumption in ac, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image forming apparatus which calculates toner consumption in ac will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2259303