Recording material discrimination device, image forming apparatus and method therefor
First Claim
1. A recording material discrimination device comprising:
- a reflected light determination unit including an image reader for obtaining an image of a surface of a recording material by reading reflected light reflected from the surface of the recording material, and determining a first attribute of the recording material by the image of the surface of said recording material obtained by the image reader;
a transmitted light determination unit for determining a second attribute of said recording material by transmitted light transmitted through said recording material; and
a discrimination unit for discriminating a kind of said recording material based on said first attribute and said second attribute.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention is objected to perform fixing in an optimum fixing condition even with various kinds of recording materials or the like while improving usability by discriminating the kinds of recording materials An image reading sensor 123 includes a reflective LED 301, a transmissive LED 303 disposed on the opposite side relative to a recording material 304 for detecting the transmitted amount of light, a CMOS area sensor 211, and an imaging lens 1113. The light from the reflective LED 301 as a light source is applied toward the surface of the recording material 304, and the reflected light from the recording material 304 is collected via the lens 303 and an image is formed on the CMOS area sensor 211. The LED 301 is disposed so as to apply LED light to the surface of the recording material 304 diagonally at a predetermined angle.
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Citations
54 Claims
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1. A recording material discrimination device comprising:
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a reflected light determination unit including an image reader for obtaining an image of a surface of a recording material by reading reflected light reflected from the surface of the recording material, and determining a first attribute of the recording material by the image of the surface of said recording material obtained by the image reader;
a transmitted light determination unit for determining a second attribute of said recording material by transmitted light transmitted through said recording material; and
a discrimination unit for discriminating a kind of said recording material based on said first attribute and said second attribute. - View Dependent Claims (2, 3, 4, 5)
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6. A recording material discrimination device comprising:
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a first irradiating member for irradiating a recording material with predetermined light so as to obtain reflected light reflected from a surface of the recording material;
a second irradiating member for irradiating said recording material with predetermined light so as to obtain transmitted light transmitted through said recording material;
a reader for receiving the reflected light or transmitted light from said recording material so as to read the light as an image and detect an amount of the light; and
a controller for discriminating a kind of said recording material based on the image and the amount of the transmitted light by allowing said first irradiating member and said second irradiating member to irradiate said recording material with light, and allowing said reader to read the reflected light obtained by said first irradiating member as an image and detect the amount of transmitted light obtained by said second irradiating member. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A recording material discrimination method comprising:
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a reflected light determination step for obtaining an image of a surface of a recording material by reading reflected light reflected from the surface of the recording material by an image reader, and determining a first attribute of the recording material by the obtained image of the surface of said recording material;
a transmitted light determination step for determining a second attribute of said recording material by transmitted light transmitted through said recording material; and
a discrimination step for discriminating a kind of said recording material based on said first attribute and said second attribute. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. An image forming apparatus including a latent image carrier for carrying a latent image, a developing part for visualizing said latent image as a developer image by providing a developer to the latent image carrier, a transfer part for transferring the developer image by the developing part onto a recording material carried in a predetermined direction, a fixing device for fixing said developer image on the recording material by heating and pressing said recording material on which said developer image has been transferred by the transfer part in a predetermined fixing treatment condition, comprising:
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a reflected light determination unit including an image reader for obtaining an image of a surface of said recording material by reading reflected light reflected from the surface of the recording material, and determining a first attribute of the recording material by the image of the surface of said recording material obtained by the image reader before transfer by said transfer part;
a transmitted light determination unit for determining a second attribute of said recording material by transmitted light transmitted through said recording material; and
a control unit for discriminating a kind of said recording material based on said first attribute and said second attribute obtained before transfer by said transfer part and allowing said fixing device to fixing said developer image to the recording material in said fixing treatment condition corresponding to the discriminated kind. - View Dependent Claims (26, 27, 28, 29)
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30. An image forming apparatus including a latent image carrier for carrying a latent image, a developing part for providing a developer to the latent image carrier, a transfer part for transferring the developer image onto a recording material, a fixing device for fixing said developer image on the recording material by heating and pressing said recording material, and a control unit for allowing said developing part to visualize said latent image as a developer image, allowing said transfer part to transfer said visualized image on said recording material carried in a predetermined direction, allowing said fixing device to fix said transferred developer image in a predetermined fixing treatment condition, and discharging the fixed recording material, comprising:
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a first irradiating member for irradiating a recording material with predetermined light so as to obtain reflected light reflected from a surface of the recording material;
a second irradiating member for irradiating said recording material with predetermined light so as to obtain transmitted light transmitted through said recording material; and
a reader for receiving the reflected light or transmitted light from said recording material so as to read the light as an image and detect an amount of the light;
wherein said control unit allows said first irradiating member and said second irradiating member to irradiate said recording material with light, and allows said reader to read the reflected light obtained by said first irradiating member as an image and detect the amount of transmitted light obtained by said second irradiating member before being transferred by said transfer part, and fixes said developer image to the recording material in said fixing treatment condition corresponding to the discriminated kind. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A recording material discrimination device comprising:
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a reflected light determination unit for reading reflected light reflected from a surface of a recording material and determining a first attribute of said recording material;
a transmitted light determination unit for reading transmitted light transmitted through said recording material and determining a second attribute of said recording material; and
a discrimination unit for discriminating a kind of said recording material, wherein said discrimination unit determines whether to discriminate the kind of said recording material by said transmitted light determination unit and said reflected light determination unit or discriminate the kind of said recording material not by said transmitted light determination unit but by said reflected light determination unit according to a determination result of said transmitted light determination unit. - View Dependent Claims (41, 42, 43)
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44. A method for controlling a recording material discrimination device including a reflected light determination unit for reading reflected light reflected from a surface of a recording material and determining a first attribute of said recording material;
- and a transmitted light determination unit for reading transmitted light transmitted through said recording material and determining a second attribute of said recording material, the method comprising;
a discrimination step for discriminating a kind of said recording material by said transmitted light determination unit; and
a selecting step for selecting, a first discrimination method for discriminating the kind of said recording material by said transmitted light determination unit and said reflected light determination unit or a second discrimination method for discriminating the kind of said recording material not by said transmitted light determination unit but by said reflected light determination unit according to a determination result of said discrimination step. - View Dependent Claims (45, 46)
- and a transmitted light determination unit for reading transmitted light transmitted through said recording material and determining a second attribute of said recording material, the method comprising;
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47. An image forming apparatus including a latent image carrier for carrying a latent image, a developing part for developing said latent image, a transfer part for transferring a developer image onto a recording material, a fixing device for fixing said developer image on said recording material, which has been transferred by said transfer part, the image forming apparatus comprising:
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a reflected light determination unit for reading reflected light reflected from a surface of a recording material and determining a first attribute of said recording material;
a transmitted light determination unit for reading transmitted light transmitted through said recording material and determining a second attribute of said recording material; and
a discrimination unit for discriminating a kind of said recording material, wherein said discrimination unit determines whether to discriminate the kind of said recording material by said transmitted light determination unit and said reflected light determination unit or discriminate the kind of said recording material not by said transmitted light determination unit but by said reflected light determination unit according to a determination result of said transmitted light determination unit. - View Dependent Claims (48, 49, 50, 51)
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52. A recording material discrimination device comprising:
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a first irradiating member for irradiating a recording material with predetermined light so as to obtain reflected light reflected from a surface of the recording material;
a second irradiating member for irradiating said recording material with predetermined light so as to obtain transmitted light transmitted through said recording material;
a reader for receiving the reflected light or transmitted light from said recording material so as to read the light as an image and detect an amount of the light; and
a discrimination unit for discriminating a kind of said recording material based on a reading result of said reader by allowing said first irradiating member and said second irradiating member to irradiate said recording material with light, wherein said discrimination unit determines whether to discriminate the kind of said recording material by said transmitted light determination unit and said reflected light determination unit or discriminate the kind of said recording material without using said transmitted light determination unit but by said reflected light determination unit according to whether said recording material is a predetermined recording material or not. - View Dependent Claims (53, 54)
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Specification