Image forming apparatus
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United States of America Patent
Stats
-
Oct 21, 2014
Grant Date -
Jun 6, 2013
app pub date -
Nov 28, 2012
filing date -
Dec 1, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An image forming apparatus includes: an image bearing element that bears a toner image to be transferred to a sheet; an image forming portion that forms the toner image on the image bearing element; a cleaning element that cleans the surface of the image bearing element; a storage portion that stores a history of print coverage; a control portion that makes the image forming portion form a cleaning toner image to be supplied to the image bearing element at time of cleaning by the cleaning element; and a print coverage calculating portion that calculates the print coverage of the sheet. The control portion obtains an average value of the print coverage in a period from after a previous cleaning by the cleaning element until before a current cleaning, and determines an amount of toner for the cleaning toner image supplied to the image bearing element based on the average value.
First Claim
Family
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Cited Art Landscape
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