Image forming apparatus
An image and graphic technology, which is applied to the electrical recording process using charge patterns, equipment for the electrical recording process using charge patterns, and electrical recording techniques, etc., can solve the problems of inconsistent image quality, inability to obtain image quality, and precision deviation.
Inactive Publication Date: 2014-06-25
KYOCERA DOCUMENT SOLUTIONS INC
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Problems solved by technology
[0003] However, in the above-mentioned conventional image forming apparatuses, due to factors such as deviations in accuracy when assembling the various components of the image forming mechanism, or deviations in the detection accuracy of the pressing state sensor itself, even if the pressing state sensor detects the circumference of the photosensitive drum and the intermediate transfer belt, The pressing state between the surfaces, in fact, the circumferential surface of the photosensitive drum and the intermediate transfer belt may not be in a pressing state suitable for image formation
Therefore, even if an image is formed on the recording paper according to the result detected by the pressing state sensor, the expected image quality cannot be obtained, and the image quality of each image forming apparatus is inconsistent.
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[0032] Next, a digital multifunction peripheral 1 that is an image forming apparatus according to a first embodiment of the present invention will be described with reference to the drawings. figure 1 It is a front cross-sectional view showing the structure of the multifunction peripheral 1 . Such as figure 1 As shown, an image forming unit 2 is provided in the main body of the digital multifunction machine 1 . The image forming unit 2 forms (prints) a color image on recording paper P. As shown in FIG.
[0033]The image forming section 2 includes: a magenta (M) developing unit 2M, a cyan (C) developing unit 2C, a yellow (Y) developing unit 2Y, and a black (Bk) developing unit 2Bk arranged in sequence in the main body; The transfer belt 10 is stretched over a plurality of rollers such as the drive roller 11a and the secondary transfer counter roller 13, and can rotate circularly in the sub-scanning direction for image formation; The transfer belt 10 is arranged opposite to t...
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A multifunction peripheral includes: development units of respective colors; an intermediate transfer belt; a transfer roller; a movement mechanism that moves the intermediate transfer belt in a direction of coming in contact with and separating from a magenta development unit and the like; a concentration sensor; a control part that causes the magenta development unit and the transfer roller to form a toner pattern on the intermediate transfer belt; and a determination unit that determines that the pressing state of the magenta development unit and the like and the intermediate transfer belt is normal when the toner pattern concentration detected by the concentration sensor after the toner pattern is transferred to the intermediate transfer belt has reached a predetermined concentration value.
Description
technical field [0001] The present invention relates to an image forming apparatus, and more particularly, to a technique for judging whether a pressing state between an intermediate transfer belt and a mechanism for transferring a toner image therebetween is normal. Background technique [0002] Conventionally, such an image forming apparatus has been known in which a toner image formed by a developing unit having a photosensitive drum is transferred to an intermediate transfer belt (hereinafter referred to as "primary transfer"), The printing roller transfers the toner image on the peripheral surface of the intermediate transfer belt onto recording paper (hereinafter referred to as "secondary transfer"). Such an image forming apparatus includes, for example: a moving mechanism that rotates a photosensitive drum constituting a part of the developing unit in a direction that presses or leaves the peripheral surface of the intermediate transfer belt; a pressing / leaving motor ...
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IPC IPC(8): G03G15/16G03G15/01
CPCG03G2215/0119G03G15/0136G03G15/0178G03G15/50G03G15/161G03G15/1605G03G2215/0193G03G15/0194
Inventor 藤井浩次
Owner KYOCERA DOCUMENT SOLUTIONS INC