Image Reading Device, Image Forming Apparatus, And Optical Unit
A technology of an image reading device and an optical unit, which is applied to image communication, electrical components, etc., can solve the problems of image reading accuracy reduction, dimensional tolerance, vibration, etc., and achieves suppression of image reading accuracy. cost effect
Active Publication Date: 2014-07-16
KYOCERA DOCUMENT SOLUTIONS INC
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Problems solved by technology
[0009] However, as in the above-mentioned two image reading devices, a bearing (sliding part) having a concave part 102 a having a semicircular or semioval cross section is used for a shaft (rail part) 101 having a circular or oval cross section. 102, or in the case of using a U-shaped sliding part 103 in contact with three surfaces, there will be play between the shaft 101 and the sliding parts 102 and 103 due to dimensional tolerances
Therefore, the optical unit vibrates when scanning in the sub-scanning direction, and there is a problem that image reading accuracy decreases.
Method used
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Embodiment Construction
[0032] Embodiments of the present invention will be described below with reference to the drawings.
[0033] refer to Figure 1 to Figure 9 The configuration of an image forming apparatus 100 including an image reading apparatus 6 according to an embodiment of the present invention will be described. figure 1 In this case, when the image forming apparatus 100 performs a copying operation, the image data of the document is read by the image reading apparatus 6 described later and converted into an image signal. On the other hand, in the image forming section 3 in the main body 2 of the digital multifunction machine, the photosensitive drum 5 rotating clockwise in the drawing is uniformly charged by the charging unit 4 , and according to the document read by the image reading device 6 For image data, an electrostatic latent image is formed on the photosensitive drum 5 with a laser beam from an exposure unit 7 , and a developer (hereinafter referred to as toner) is attached to ...
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The invention provides an image reading device, an image forming apparatus and an optical unit. The image reading device has an optical unit and a rail portion formed of sheet metal. The optical unit is scanned in the sub scanning direction to read an image on a document on a contact glass. The rail portion slidably supports the optical unit. The optical unit has a sliding portion which slides on the rail portion while making contact therewith, and at least one pair of gripping portions which grip the rail portion. The surface of the sliding portion has a substantially arc-shaped cross section. The rail portion has two inclined surfaces that make contact with the substantially arc-shaped surface at two points.
Description
technical field [0001] The present invention relates to an image reading device, an image forming device having the image reading device, and an optical unit, and more particularly, to an image reading device including an optical unit movable in a sub-scanning direction, and an image forming device having the image reading device and optical unit. Background technique [0002] Using an image reading device installed in an electrophotographic digital multifunction machine, etc., there is an image reading device having a document conveying device that sequentially feeds the document into the document placement table (glass plate) in order to read a sheet-shaped document. ), and is ejected from the original table after reading is completed. In such an image reading device, there are two reading methods, one is the paper passing method, in the state of closing the original pressing device, the original is automatically conveyed and read by the original conveying device, and the...
Claims
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IPC IPC(8): H04N1/00H04N1/04H04N1/047
CPCH04N1/1017H04N1/1026H04N1/103H04N2201/0081H04N2201/0456
Inventor 山﨑俊介
Owner KYOCERA DOCUMENT SOLUTIONS INC