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US 8,941,896 B2Granted
Image reading unit and overhead image reading device
AssigneePfu Limited
InventorMasanari Takabatake
Life of this patent
Estimating the term…
Abstract
An image reading unit includes an image reading section that reads an image of a document in a one-dimensional direction by one-dimensionally aligned imaging elements, a light source that irradiates an image reading region by the image reading section with light, and a rotation head that holds the image reading section and the light source in a manner that the image reading section and the light source are rotatable relative to the document about a rotation axis which is parallel to an alignment direction of the imaging elements.
Claims7
An image reading unit comprising:
- an image reading section including one-dimensionally aligned imaging elements to read an image of a document in a one-dimensional direction;
- a lens for converging light from the document to the image reading section;
- light sources each of which irradiates an image reading region read by the image reading section with light;
- and
- a rotation head that holds the image reading section, the lens, and the light sources in a manner that the image reading section, the lens, and the light sources are rotatable relative to the document about a rotation axis which is parallel to an alignment direction of the imaging elements, wherein
- the light sources are disposed at both sides of the lens in a direction of the rotation axis, and
- the image reading section and the light sources are disposed such that an irradiation plane indicating an irradiation range by the light sources overlaps with a scanning plane indicating a range of reading in the image reading by the image reading section.
4 more elements
An overhead image reading device comprising:
- an image reading unit including:
- an image reading section including one-dimensionally aligned imaging elements to read an image of a document in a one-dimensional direction,
- a lens for converging light from the document to the image reading section,
- light sources each of which irradiates an image reading region read by the image reading section with light, and
- a rotation head that holds the image reading section, the lens, and the light sources in a manner that the image reading section, the lens, and the light sources are rotatable relative to the document about a rotation axis which is parallel to an alignment direction of the imaging elements, wherein the light sources are disposed at both sides of the lens in a direction of the rotation axis, and the image reading section and the light sources are disposed such an irradiation plane indicating an irradiation range by the light sources overlaps with a scanning plane indicating a range of reading in the image reading by the image reading section;
- and
- an arm that is fixed to a placement surface on which the document is placed and supports the image reading unit.
4 more elements
Dependencies are inferred from the claim text.