Sheet identification device and image processing apparatus capable of identifying fiber direction of sheet
AssigneeKYOCERA Document Solutions Inc.
InventorsKoji Sato, Kazuhiro Nakachi, Rui Hamabe, Takuya Miyamoto
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Abstract
A sheet identification device includes a light irradiation portion. When forming an identification image, the light irradiation portion projects first pattern light (P11) and second pattern light (P12) having different dependences on a fiber direction of a surface of a sheet on an identification region (R1). The identification image is an image of the identification region (R1) of the surface of the sheet on which image formation or image reading is performed, which is used for identifying the fiber direction of the surface of the sheet.
Claims15
A sheet identification device comprising:
- a light irradiation portion configured to, when forming an identification image which is an image of an identification region of a surface of a sheet on which image formation or image reading is performed and which is used for identification of a fiber direction of the surface of the sheet, project first pattern light and second pattern light having different dependences on the fiber direction on the identification region,
- wherein the first pattern light and the second pattern light have different line widths on the identification region to have different dependences on the fiber direction.
A sheet identification device comprising:
- an acquisition portion configured to acquire an identification image which is an image of an identification region on which pattern light is projected of a surface of a sheet on which image formation or image reading is performed;
- and
- a direction identification portion configured to identify a fiber direction of the surface of the sheet, based on the identification image,
- wherein:
- the pattern light includes first pattern light and second pattern light having different dependences on the fiber direction,
- the direction identification portion identifies the fiber direction based on a comparison result between the first pattern light and the second pattern light in the identification image, and
- the first pattern light and the second pattern light have different line widths on the identification region to have different dependences on the fiber direction.
A sheet identification device comprising:
- an acquisition portion configured to acquire an identification image which is an image of an identification region on which pattern light is projected of a surface of a sheet on which image formation or image reading is performed;
- and
- a direction identification portion configured to identify a fiber direction of the surface of the sheet, based on the identification image,
- wherein:
- the pattern light includes first pattern light and second pattern light having different dependences on the fiber direction,
- the direction identification portion identifies the fiber direction based on a comparison result between the first pattern light and the second pattern light in the identification image, and
- the direction identification portion identifies the fiber direction, based at least on a comparison result between a variation in a line width of the first pattern light and a variation in a line width of the second pattern light on the identification region.
Dependencies are inferred from the claim text.