Image forming apparatus and method for controlling image forming apparatus

US9223246B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9223246-B2
Application numberUS-201414515942-A
CountryUS
Kind codeB2
Filing dateOct 16, 2014
Priority dateDec 17, 2013
Publication dateDec 29, 2015
Grant dateDec 29, 2015

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  2. Abstract

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  5. First independent claim

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Abstract

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An image forming apparatus comprising: an image forming unit including a containing unit; a replenishment unit replenishes the containing unit with the toner; a first determination unit determines an amount of the toner consumed in the containing unit; a detection unit detects a toner amount in the containing unit; a first calculation unit calculates a difference between the toner amount and a target amount; a second calculation unit calculates a cumulative value of the difference; a second determination unit determines a determination value; a prevention unit prevents the second calculation unit from accumulating the difference at second timing following the first timing; and a controller controls the replenishment unit, based on the determination value, in a case where the first determination value is less than a threshold, the second calculating unit is prevented from accumulating the difference at the second timing, on the cumulative value calculated at the first timing.

First claim

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What is claimed is: 1. An image forming apparatus comprising: an image forming unit including a containing unit that contains toner, and configured to form an image based on image data, by using the toner contained in the containing unit; a replenishment unit configured to replenish the containing unit with the toner; a first determination unit configured to determine, based on the image data, a consumption amount of the toner consumed in the containing unit in a case where th…

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What does patent US9223246B2 cover?
An image forming apparatus comprising: an image forming unit including a containing unit; a replenishment unit replenishes the containing unit with the toner; a first determination unit determines an amount of the toner consumed in the containing unit; a detection unit detects a toner amount in the containing unit; a first calculation unit calculates a difference between the toner amount and a …
Who is the assignee on this patent?
Canon Kk
What technology area does this patent fall under?
Primary CPC classification G03G15/553. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Dec 29 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).