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US 10,379,037 B2Granted
Spectral colorimetric apparatus and image forming apparatus that uses the same
AssigneeCanon Kabushiki Kaisha
InventorWataru Sato
Life of this patent
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Abstract
A spectral colorimetric apparatus comprises a light source, a spectral element, a light receiving element, a substrate on which the light receiving element is mounted, a housing and a pressing portion. The housing has a first side wall on which the substrate is fixed and a second side wall on which the spectral element is fixed. The pressing portion pinches the spectral element together with the second side wall and presses the spectral element to the second side wall.
Claims35
A spectral colorimetric apparatus comprising:
- a light source configured to irradiate light onto a surface to be detected;
- a spectral optical element configured to disperse reflected light that is reflected from the surface to be detected;
- a light receiver configured to receive light dispersed by the spectral optical element;
- a substrate on which the light receiver is mounted;
- a housing having a first side wall on which the substrate is fixed and a second side wall on which the spectral optical element is fixed;
- and
- a pressing arm configured to pinch the spectral optical element together with the second side wall and to press the spectral optical element to the second side wall.
4 more elements
An image forming apparatus comprising:
- an image former configured to form a monochrome test image or a color mixture test image on a sheet;
- a spectral colorimetric sensor configured to perform a colorimetric analysis on the monochrome test image or the color mixture test image formed on the sheet;
- and
- processor circuitry configured to generate or update a color mapping table used by the image former in accordance with a colorimetric result obtained by the spectral colorimetric sensor,
- wherein the spectral colorimetric sensor comprises:
- a light source that irradiates light on a surface to be detected of the sheet,
- a spectral optical element configured to disperse reflected light that is reflected from the surface to be detected;
- a light receiver configured to receive light dispersed by the spectral optical element;
- a substrate on which the light receiver is mounted;
- a housing having a first side wall on which the substrate is fixed and a second side wall on which the spectral optical element is fixed;
- and
- a pressing arm configured to pinch the spectral optical element together with the second side wall and to press the spectral optical element to the second side wall.
9 more elements
A spectral colorimetric apparatus comprising:
- a light source configured to irradiate light onto a surface to be detected;
- a spectral optical element configured to disperse reflected light from the surface to be detected;
- a light receiving element configured to receive light dispersed by the spectral optical element;
- a housing having a side wall on which the spectral optical element is provided;
- and
- a presser configured to press the spectral optical element to the side wall so that the spectral optical element is mounted to the side wall.
3 more elements
An image forming apparatus comprising:
- an image former configured to form a monochrome test image or a color mixture test image on a sheet;
- a spectral colorimetric sensor configured to perform a colorimetric analysis on the monochrome test image or the color mixture test image formed on the sheet;
- and
- processor circuitry configured to generate or update a color mapping table used by the image former in accordance with a colorimetric result obtained by the spectral colorimetric sensor,
- wherein the spectral colorimetric sensor comprises:
- a light source configured to irradiate light onto a surface to be detected;
- a spectral optical element configured to disperse reflected light from the surface to be detected;
- a light receiving element configured to receive light dispersed by the spectral optical element;
- a housing having a side wall on which the spectral optical element is provided;
- and
- a presser configured to press the spectral optical element to the side wall so that the spectral optical element is mounted to the side wall.
8 more elements
Dependencies are inferred from the claim text.