Optical scanning device and image forming apparatus including the same
US-9223131-B2 · Dec 29, 2015 · US
Electrophotographic-type image forming apparatus
US8933979B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8933979-B2 |
| Application number | US-201113293430-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 10, 2011 |
| Priority date | Nov 17, 2010 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
An image forming apparatus comprises a light source, a photosensitive member and a control unit. The light source turns on in response to a driving current supplied based on image data. An electrostatic latent image is formed on the photosensitive member by exposing the photosensitive member to a light beam output from the light source turned on. The control unit controls the value of the driving current supplied to the light source in accordance with a driving state of the light source so that the value of the driving current supplied to the light source differs and changes with the passage of time in accordance with the driving state of the light source prior to the driving current being supplied to the light source.
First claim
Opening claim text (preview).
What is claimed is: 1. An image forming apparatus comprising: a light source configured to turn on in response to a driving current supplied based on image data; a photosensitive member on which an electrostatic latent image is formed by exposing the photosensitive member to a light beam output from the turned on light source; a current supply unit configured to add a correction current to the driving current being supplied to the light source to correct a rise of a light amou…
Assignees
Inventors
Classifications
- B41J2/471Primary
Operations & Transport · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US8933979B2 cover?
- An image forming apparatus comprises a light source, a photosensitive member and a control unit. The light source turns on in response to a driving current supplied based on image data. An electrostatic latent image is formed on the photosensitive member by exposing the photosensitive member to a light beam output from the light source turned on. The control unit controls the value of the drivi…
- Who is the assignee on this patent?
- Seki Yuichi, Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification B41J2/471. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 13 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).