Image forming apparatus and control method thereof
US-9223273-B1 · Dec 29, 2015 · US
Image forming apparatus which performs tone correction
US8970912B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8970912-B2 |
| Application number | US-201313858129-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 8, 2013 |
| Priority date | Apr 19, 2012 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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An image forming apparatus includes: a holding unit configured to hold image processing coefficients, each of which representing a relationship between an input density and an output density of an image signal output to an image forming unit; and an updating unit configured to update an image processing coefficient based on the relationship between densities of measurement images and densities of image signals for forming the measurement images. The updating unit is further configured to, when a maximum value of an output density of the image processing coefficients is smaller than a maximum value of the density of the image signal, form at least one first measurement image in accordance with an image signal indicating a density higher than the maximum value of the output density of the image processing coefficients.
First claim
Opening claim text (preview).
What is claimed is: 1. An image forming apparatus comprising: an image forming unit configured to form an image on an image carrier based on an image signal; a holding unit configured to hold image processing coefficients, each image processing coefficient of the image processing coefficients representing a relationship between an input density and an output density corresponding to a density of the image signal to determine the density of the image signal to be output to the im…
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Physics · mapped topic
- G03G15/5041Primary
Physics · mapped topic
- G06K15/02Primary
Physics · mapped topic
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- What does patent US8970912B2 cover?
- An image forming apparatus includes: a holding unit configured to hold image processing coefficients, each of which representing a relationship between an input density and an output density of an image signal output to an image forming unit; and an updating unit configured to update an image processing coefficient based on the relationship between densities of measurement images and densities …
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification G03G15/5041. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 03 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).