Image reading apparatus and light source
AssigneeMinolta Co., Ltd.
InventorYukihiro Imaizumi
Life of this patent
Estimating the term…
Abstract
A first light source having first and second light transmission areas that extend along the axial direction and face each other, a conveyance unit that conveys the original document sheet such that it faces the first light transmission area, and a reading unit that receives the light that illuminates the original document sheet and is reflected thereby and reads the image of the original document sheet are included, wherein the light emitted via the first light transmission area and reflected by the original document sheet is led to the reading unit via the first and second light transmission areas. As a result, illumination efficiency improves, and reduced power consumption and prevention of heat generation can be achieved.
Claims7
An image reading apparatus comprising:
- a first light source having first and second light transmission areas that extend along an axial direction and face each other;
- a conveyance unit that conveys an original document sheet such that it faces the first light transmission area;
- a reading unit that receives light emitted toward the original document and reflected therefrom and reads an image of the original document sheet;
- a second light source that is disposed at a distance from the original document sheet;
- and
- a moving unit that moves the second light source along the original document sheet when the conveyance unit has come to a stop, such that the light emitted from the second light source while it is moving and reflected by the original document sheet is received by the reading unit,
- wherein the light that is emitted through the first light transmission area and reflected by the original document sheet passes through the first and second light transmission areas and is led to the reading unit.
An image reading apparatus comprising:
- a first light source having first and second light transmission areas that extend along an axial direction and face each other;
- a conveyance unit that conveys an original document sheet such that it faces the first light transmission area;
- and
- a reading unit that receives light emitted toward the original document and reflected therefrom and reads an image of the original document sheet;
- wherein the light that is emitted through the first light transmission area and reflected by the original document sheet passes through the first and second light transmission areas and is led to the reading unit, and
- wherein the first light source has a pole configuration with a polygonal cross-section.
Dependencies are inferred from the claim text.