Image reading device and image forming apparatus
A technology of an image reading device and a box body is applied in the fields of image forming devices and image reading devices, and can solve the problems of moving the movable part and taking a long time.
Inactive Publication Date: 2014-03-26
KYOCERA DOCUMENT SOLUTIONS INC
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Problems solved by technology
At this time, since the image reading device cannot recognize the position of the movable part stopped at an unexpected position, the movable part cannot be moved to the initial position in a short distance, resulting in a shock when the movable part reaches the initial position. takes longer
Method used
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[0019] Next, specific embodiments of the present invention will be described with reference to the drawings. figure 1 An image forming apparatus in a specific embodiment of the present invention seen from above is shown. figure 2 means from figure 1 The movable part and the reflection control part seen in the direction of the arrow line II-II in . figure 2 It also shows the correspondence relationship between the arrangement of the strong reflection part and the weak reflection part formed on the reflection control part and the arrangement of the binary signal value numbers.
[0020] like figure 1 As shown, the image reading device 1 according to the embodiment of the present invention optically reads a document and generates image information corresponding to the document. The image reading device 1 can be installed in, for example, a scanner, a copier, a multifunction machine, or the like.
[0021] The image reading device 1 has a box-shaped casing 2 . The box body 2 ...
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In an image reading device, a movable part provided below a document platen in a housing is moved in a sub scanning direction. A reflection control part extending along a movement range of the movable part is fixed to the housing near the movable part. The reflection control part has first reflection parts having a relatively large reflectance and second reflection parts having a relatively small reflectance, and the first reflection parts and the second reflection parts are arranged via a specified mode in a direction parallel to the sub scanning direction. A detection light irradiation part arranged on the movable part irradiates the reflection control part with detection light. A detection light reception part receives the detection light reflected by the reflection control part irradiated by the detection light irradiation part. A signal generating part generates a binary signal corresponding to the detection light received by the detection light reception part. A movement deciding part decides movement state of the movable part according to the binary signal generated by the signal generating part.
Description
technical field [0001] The present invention relates to an image reading device and an image forming device for optically reading a document, which are used in, for example, scanners, copiers, multifunction machines, and the like. Background technique [0002] Generally speaking, an image reading device used in a scanner, copier, compound machine, etc. has a document table, a movable part, and a motor. The lower part of the document table moves along the longitudinal direction of the document table (sub-scanning direction), and the motor is used to move the movable part. The image reading device further includes: a linear light source extending along the short side direction (main scanning direction) of the original table for irradiating the original with scanning light; The reflected scanning light generates image data corresponding to the received scanning light. The linear light source is provided, for example, on the movable portion, and irradiates scanning light to an...
Claims
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IPC IPC(8): H04N1/00
CPCH04N1/1017H04N1/00018H04N1/1065H04N1/1026H04N1/1043
Inventor 佐山晴基
Owner KYOCERA DOCUMENT SOLUTIONS INC