Device and method to calculate a consumed amount of toner

Details Device and method to calculate a consumed amount of toner Device and method to calculate a consumed amount of toner

2007-11-27

2007-11-27

Deb, Anjan (Department: 2858)

Electrophotography

Diagnostics

Consumable

Reexamination Certificate

active

11008171

ABSTRACT:
An image-forming apparatus including a valid signal generator to input print data and a video clock to synchronize the print data, and generate binary image data, a pixel counter to calculate the number of pixels of the print data based on the binary image data, a data stream counter to calculate the number of particular data streams of the binary image data, a coefficient memory to store coefficients with respect to average toner consumption amounts per pixel, a weight memory to store a lookup table containing weights corresponding to percentages of the number of pixels to the particular data streams, and a controller to calculate a percentage of the number of pixels to the number of particular data streams to read out a weight, and calculate the consumed amount of toner by use of the read weight, the number of pixels, and a toner consumption amount coefficient.

REFERENCES:
patent: 6810218 (2004-10-01), Wong et al.
patent: 2002/0141765 (2002-10-01), Phillips
patent: 06-13879 (1994-05-01), None
patent: 10-260618 (1998-09-01), None
patent: 2002-244495 (2002-08-01), None
patent: 2002-327848 (2002-11-01), None
patent: 2002-328568 (2002-11-01), None
Korean Office Action issued Jun. 19, 2006 with respect to Korean Patent Application No. 2004-00961.

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