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US 8,711,454 B2Granted
Image scanner and image forming apparatus
AssigneeFuji Xerox Co., Ltd.
InventorMasao Ito
Life of this patent
Estimating the term…
Abstract
An image scanner includes: a light source that irradiates, with light, a recording medium on which an image is formed; a light receiving portion that receives light reflected by the recording medium; and a reflecting portion that has a reflecting surface for measuring the amount of specular reflection light coming from the light source, the specular reflection light being included in the light received by the light receiving portion.
Claims20
An image scanner comprising:
- a first light source and a second light source that irradiate, with lights, a recording medium on which an image is formed at a first inclination angle and a second inclination angle respectively;
- a light receiving portion that receives light reflected by the recording medium;
- and
- a reflecting portion that has a surface for measuring the amount of specular reflection light coming from the light source, the specular reflection light being included in the light received by the light receiving portion,
- wherein the reflecting portion includes at least two measurement surfaces provided in a longitudinal direction of the reflecting portion and one of the two measurement surfaces includes a measurement chart for measuring the amount of specular reflection light, the measurement chart including at least one reflecting surface;
- wherein the at least two measurement surfaces are disposed at the first inclination angle and the second inclination angle in directions of the first light source and the second light source.
3 more elements
An image forming apparatus comprising:
- an image forming portion that forms an image on a recording medium;
- and
- a scanner unit that scans the image on the recording medium in order to adjust an image to be formed on the recording medium by the image forming portion, wherein the scanner unit includes:
- a first light source and a second light source that irradiate, with lights, the recording medium on which an image is formed at a first inclination angle and a second inclination angle respectively;
- a light receiving portion receiving light reflected by the recording medium;
- and
- a reflecting portion having a surface for measuring the amount of specular reflection light included in the light received by the light receiving portion,
- wherein the reflecting portion includes at least two measurement surfaces provided in a longitudinal direction of the reflecting portion and one of the two measurement surfaces includes a measurement chart for measuring the amount of specular reflection light, the measurement chart including at least one reflecting surface;
- wherein the at least two measurement surfaces are disposed at the first inclination angle and the second inclination angle in directions of the first light source and the second light source.
6 more elements
Dependencies are inferred from the claim text.