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US 8,570,616 B2Granted
Lighting device, image reading device, and image forming apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorSasuke Endo
Life of this patent
Estimating the term…
Abstract
According to one embodiment, a lighting device includes: a light source configured to generate light used for reading of an image; and a light guide configured to extend in a predetermined direction and lead light, which is irradiated from the light source, town image reading region, the light guide having, at an end in the predetermined direction, an incident region where the light irradiated from the light source is made incident and a cutting trace.
Claims18
A lighting device comprising:
- a light source configured to generate light used for reading an image;
- and
- a light guide extending in a predetermined direction and configured to guide the light irradiated from the light source to an image reading region, the light guide having an incident region, on which the light irradiated from the light source is incident, and a cutting trace, the incident region and the cutting trace being located in different regions of an end face of the light guide in the predetermined direction.
An image reading device comprising:
- a light source configured to generate light used for reading of an image;
- a light guide extending in a predetermined direction and configured to guide the light irradiated from the light source to an image reading region, the light guide having an incident region, on which the light irradiated from the light source is incident, and a cutting trace, the incident region and the cutting trace being located at different regions of an end face of the light guide in the predetermined direction;
- and
- an image sensor configured to receive the light reflected from the image reading region and convert the received light to an electric signal.
1 more element
An image forming apparatus comprising:
- a light source configured to generate light used for reading of an image;
- a light guide extending in a predetermined direction and configured to guide the light irradiated from the light source to an image reading region, the light guide having an incident region, on which the light irradiated from the light source is incident, and a cutting trace, the incident region and the cutting trace being located at different regions of an end face of the light guide in the predetermined direction;
- an image sensor configured to receive the light reflected from the image and convert the received light to an electric signal;
- and
- an image forming section configured to form the image on a sheet on the basis of the electric signal obtained from the image sensor.
2 more elements
An image reading method comprising:
- generating light to be used for reading an image;
- directing the light to be incident on an end face of a light guide extending in a predetermined direction at a region of the end face different from a region of the end face where a cutting trace is located;
- directing the light exiting the light guide to an image reading region;
- directing the light reflected from the image reading region to an image sensor;
- and
- generating at the image sensor a signal from the light reflected from the image reading region.
3 more elements
Dependencies are inferred from the claim text.