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Image forming apparatus capable of performing gradation correction, method of controlling same, and storage medium
US10488784B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10488784-B2 |
| Application number | US-201816129158-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 12, 2018 |
| Priority date | Sep 19, 2017 |
| Publication date | Nov 26, 2019 |
| Grant date | Nov 26, 2019 |
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- Title
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Abstract
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First correction data for use in a first printing mode is generated by image density measurement in the first printing mode, and second correction data for use in a second printing mode, which is different from the first printing mode in peripheral speed ratio of a developing roller to a photosensitive drum, is generated by image density measurement in the second printing mode. First processing for generating first and second correction data for the first and second printing modes, respectively, by density measurement, or second processing for generating the first correction data by density measurement and generating the second correction data using the generated first correction data and a difference in image density between the first printing mode and the second printing mode is executed. The first processing is executed when a predetermined condition is satisfied.
First claim
Opening claim text (preview).
What is claimed is: 1. An image forming apparatus that includes a photosensitive drum on which an electrostatic latent image is formed, and a developing roller which causes developer to attach to the photosensitive drum, and is capable of performing image formation in a first printing mode in which a peripheral speed ratio of the developing roller to the photosensitive drum is set to a predetermined peripheral speed ratio so as to form an image, and image formation in a second prin…
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Physics · mapped topic
- G03G15/0806Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US10488784B2 cover?
- First correction data for use in a first printing mode is generated by image density measurement in the first printing mode, and second correction data for use in a second printing mode, which is different from the first printing mode in peripheral speed ratio of a developing roller to a photosensitive drum, is generated by image density measurement in the second printing mode. First processing…
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification G03G15/0806. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 26 2019 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).