Image forming apparatus and method for estimating the amount...

Details Image forming apparatus and method for estimating the amount... Image forming apparatus and method for estimating the amount...

2005-05-17

2005-05-17

Chen, Sophia S. (Department: 2852)

Electrophotography

Diagnostics

Consumable

C347S131000

Reexamination Certificate

active

06895193

ABSTRACT:
An image forming apparatus and toner-consumption-estimation method that can accurately estimate the amount of consumed toner regardless of the type of image. A printing-pixel-counting unit counts from input image data the number of printing pixels. Also, an edge-counting unit similarly counts from the input image data the number of edges being boundaries between the printing pixels and blank pixels. A consumption-estimation unit then calculates the amount of consumed toner based on the counted number of printing pixels and the number of edges.

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patent: 58-224363 (1983-12-01), None
patent: 10-239978 (1988-09-01), None
patent: 10-133466 (1998-05-01), None

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