Scanning optical system and image forming apparatus including the same
US-9217863-B2 · Dec 22, 2015 · US
Light scanning device and image forming apparatus with the same
US9250439B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9250439-B2 |
| Application number | US-201314433710-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 15, 2013 |
| Priority date | Oct 17, 2012 |
| Publication date | Feb 2, 2016 |
| Grant date | Feb 2, 2016 |
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Abstract
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A light scanning device includes: a first semiconductor laser 44 a that emits a light beam L 1 ; a polygonal mirror 42 that deflects the light beam L 1 ; a reflective mirror 64 a that reflects the light beam L 1 deflected by the polygonal mirror 42 and causes the light beam L 1 to enter a photosensitive drum 13 ; and a BD sensor 72 that detects the light beam L 1 deflected by the polygonal mirror 42 . The light scanning device scans the photosensitive drum 13 with the light beam L 1 and set scanning timing of the photosensitive drum 13 using the light beam L 1 based on detection timing of the light beam L 1 using the BD sensor 72 . The BD sensor 72 is arranged in the position farther from the polygonal mirror 42 than the last reflective mirror 64 a that reflects the light beam L 1 immediately before entering the photosensitive drum 13 and arranged inside a scanning angle range α of the light beam L 1 corresponding to an effective scan area of the photosensitive drum 13.
First claim
Opening claim text (preview).
The invention claimed is: 1. A light scanning device, comprising: a light-emitting element; a deflecting section configured to deflect a light beam emitted from the light-emitting element; at least one reflective mirror configured to reflect the light beam and cause the light beam to enter a scan object, the light beam being emitted from the light-emitting element and deflected by the deflecting section; and an optical sensor configured to detect the light beam deflected by…
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Electricity · mapped topic
Operations & Transport · mapped topic
Physics · mapped topic
- G02B26/124Primary
Physics · mapped topic
Electricity · mapped topic
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- What does patent US9250439B2 cover?
- A light scanning device includes: a first semiconductor laser 44 a that emits a light beam L 1 ; a polygonal mirror 42 that deflects the light beam L 1 ; a reflective mirror 64 a that reflects the light beam L 1 deflected by the polygonal mirror 42 and causes the light beam L 1 to enter a photosensitive drum 13 ; and a BD sensor 72 that detects the light beam L 1 deflected by …
- Who is the assignee on this patent?
- Sharp Kk
- What technology area does this patent fall under?
- Primary CPC classification G02B26/124. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 02 2016 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).