Document reading device and image forming apparatus
US-2015381854-A1 · Dec 31, 2015 · US
Image reading apparatus with correction using diffuse reflection surface and image forming apparatus with same
US8995026B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8995026-B2 |
| Application number | US-201313915423-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 11, 2013 |
| Priority date | Jun 22, 2012 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
Official abstract text for this publication.
An image reading apparatus includes: an image reading unit which has a light source irradiating light to a sheet conveyed along reading glass, and an image reading element reading an image by reflected light from the sheet; a conveyance guide portion which guides the sheet and which is disposed in a position, that corresponds to the image reading unit, with the reading glass interposed between the conveyance guide portion and the image reading unit; a correction unit which corrects image information obtained by reading the sheet by the image reading unit based on reflected light that is emitted from the light source and reflected on the conveyance guide portion; and the conveyance guide portion which has a diffuse reflecting surface diffusing and reflecting the light from the light source.
First claim
Opening claim text (preview).
What is claimed is: 1. An image reading apparatus, comprising: an image reading unit which has a light source irradiating light to a sheet conveyed along reading glass, and an image reading element reading an image by reflected light from the sheet; a conveyance guide portion which guides a sheet and which is disposed in a position, that corresponds to the image reading unit, with the reading glass interposed between the conveyance guide portion and the image reading unit; and…
Assignees
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Classifications
- H04N1/401Primary
Electricity · mapped topic
- H04N1/40093Primary
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8995026B2 cover?
- An image reading apparatus includes: an image reading unit which has a light source irradiating light to a sheet conveyed along reading glass, and an image reading element reading an image by reflected light from the sheet; a conveyance guide portion which guides the sheet and which is disposed in a position, that corresponds to the image reading unit, with the reading glass interposed between …
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification H04N1/401. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 31 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).