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Position detection device and method, image reading device, image forming device

A detection device and image technology, applied in image enhancement, image analysis, image communication, etc., can solve problems such as errors in reading results of reading equipment, and achieve the effect of reducing errors

Active Publication Date: 2021-01-08
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, reading devices such as CIS may expand or contract due to self-heating or an increase in ambient temperature.
According to the conventional technology, due to the expansion and contraction of the reading device, there will be errors in the reading results of the reading device

Method used

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  • Position detection device and method, image reading device, image forming device
  • Position detection device and method, image reading device, image forming device
  • Position detection device and method, image reading device, image forming device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0037] [Explanation of the hardware configuration of the printing system]

[0038] figure 1 Shown is a schematic example of the hardware configuration of the printing system according to the first embodiment. Such as figure 1 As shown, a printing system 1 as an image forming apparatus has a printing apparatus 100 , a medium position detecting apparatus 200 (an example of a position detecting apparatus), and a stacker 300 .

[0039] The printing device 100 includes an operation panel 101, tandem electrophotographic image forming units 103Y, 103M, 103C, 103K, a transfer belt 105, a secondary transfer roller 107, a paper supply unit 109, a conveying roller pair 102, and a fixing roller. 104. The path 106 is reversed.

[0040] The operation panel 101 is an operation display unit for inputting various operations to the printing device 100 and the medium position detection device 200 or displaying various screens.

[0041] The image forming units 103Y, 103M, 103C, and 103K form ...

no. 2 Embodiment approach

[0126] Next, a second embodiment will be described.

[0127] The second embodiment is different from the first embodiment, which assumes that the amount of expansion and contraction of the reading device 201 is the same at every main scanning position, in that the expansion and contraction of the reading device 201 is not necessarily limited to the main scanning direction. same. Hereinafter, in the description of the second embodiment, the description of the same parts as those of the first embodiment will be omitted, and the points different from the first embodiment will be described.

[0128] here, Figure 10 (a), (b) is a figure explaining the difference of the change amount of the main scanning position of the reading apparatus 201 which concerns on 2nd Embodiment. exist Figure 10 In the example shown, the extension of the pixels of the reading device 201 increases significantly toward the rear end of the main scan. exist Figure 10 (c) shows an example where the pi...

no. 3 Embodiment approach

[0150] Next, a third embodiment will be described.

[0151] The third embodiment differs from the first embodiment or the second embodiment in that the reference position of the position reference member 202 is set using the substantially center of the reading device 201 in the main scanning direction at low temperature as a reference position (support point). Hereinafter, in the description of the third embodiment, the description of the same parts as those of the first embodiment or the second embodiment will be omitted, and the points different from the first embodiment or the second embodiment will be described.

[0152] Figure 12 What is shown is a figure explaining the installation example of the reading device 201 which concerns on 3rd Embodiment. Depending on the configuration of peripheral mechanical components, it is conceivable that the positions described in the first embodiment or the second embodiment may not necessarily be used as reference positions. exist ...

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PUM

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Abstract

The invention relates to a position detection device, an image reading device, an image forming device and a position detection method, which are used to reduce the error of the position detection result caused by expansion and contraction caused by heating of the reading device. The position detection device includes a first position detection part (111) that controls the reading device (201) to detect the external shape of the processing object and the position of the image pattern on the processing object as a first detection result, and controls the The reading device (201) has a second position detection unit (112) that detects, as a second detection result, a mark disposed on the position reference member corresponding to a predetermined position of the reading device (201), and according to the A control unit (113) that detects a change amount of the reading device (201) and corrects a processing position of the processing object by using the first detection result and the second detection result.

Description

technical field [0001] The invention relates to a position detection device, an image reading device, an image forming device and a position detection method. Background technique [0002] In the past, in order to correct the conveying position of the conveyed object and the processing position of the conveyed object, it is disclosed to use a reading device such as a contact image sensor (CIS: Contact Image Sensor) to read the contour edge position and The technology of the processing position of the object being conveyed. [0003] However, a reading device such as a CIS may expand or contract due to self-heating or an increase in ambient temperature. According to the conventional technology, due to the expansion and contraction of the reading device, an error may be generated in the reading result of the reading device. [0004] [Patent Document 1] (Japanese) Unexamined Patent Publication No. 2010-173069 Contents of the invention [0005] In view of the above problems,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/047H04N3/14
CPCG03G15/5062G03G15/6567H04N1/00824G06T7/73G06T2207/10008G06T2207/30176G06V10/245G06T7/13G06T7/337
Inventor 二角大祐中泽政元池本龙马稻毛修石井达也岩波智史牧野英世山崎公晴青柳广太中山聪
Owner RICOH KK