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Position detecting device, image forming apparatus, and position detecting method

A detection device and image technology, which is applied in the direction of measuring device, image communication, optical device, etc., can solve the problems of correction value error, unreadable equipment installation angle correction, etc., and achieve the effect of simple structure

Active Publication Date: 2019-08-02
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, according to the prior art, the mounting angle of the reading device (module, sensor chip) cannot be corrected correctly due to changes in the sensor state (pixel position) of the reading device, and errors may occur in the correction value. question

Method used

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  • Position detecting device, image forming apparatus, and position detecting method
  • Position detecting device, image forming apparatus, and position detecting method
  • Position detecting device, image forming apparatus, and position detecting method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0045] [Explanation of the hardware configuration of the printing system]

[0046] 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 .

[0047] 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.

[0048] 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.

[0049] The image forming units 103Y, 103M, 103C, and 103K form ...

no. 2 Embodiment approach

[0158] Next, a second embodiment will be described.

[0159] The second embodiment differs from the first embodiment in which only vertical lines are used as marks M in that horizontal lines are used in addition to the vertical lines of the marks M which are reference lines on the position reference member 202 . 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.

[0160] here, Figure 19 Shown is a schematic diagram of the corresponding positional relationship between the reading device 201 and the position reference member 202 in the medium position detection device 200 according to the second embodiment. exist Figure 19 In , an example in which the reading device 201 is arranged obliquely with respect to the main scanning direction is shown.

[0161] like Figure 19 As shown, the position reference member 202 is...

no. 3 Embodiment approach

[0183] Next, a third embodiment will be described.

[0184] The difference between the third embodiment and the first and second embodiments is that the vertical lines of the plurality of marks M on the position reference member 202 are arranged at equal intervals, so that each sensor on the substrate of the reading device 201 chip to read a longitudinal line marked M respectively. Hereinafter, in the description of the third embodiment, the description of the same parts as those of the first embodiment to the second embodiment will be omitted, and the points different from the first embodiment to the second embodiment will be described.

[0185] here, Figure 22 What is shown is a figure explaining the actual state of the actual mounting position of the sensor chip of the reading device 201 which concerns on 3rd Embodiment. like Figure 22 As shown, the CIS applicable to the reading device 201 generally has a well-known configuration by arranging a plurality of sensor chip...

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PUM

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Abstract

The present invention relates to a position detecting device, an image forming apparatus, and a position detecting method, capable of correcting errors in position detection results due to expansion and contraction due to heat generation of a reading device while correctly correcting the mounting angle of the reading device. The position detecting device includes a first position detector, a second position detector, and a controller. The first position detector controls a reading device to detect, as a first detection result, an outer shape of a processing subject and a position of an image pattern on the processing subject. The second position detector controls the reading device to detect, as a second detection result, a mark arranged on a position reference member, the mark corresponding to a predetermined position in the reading device. The controller detects a first correction value of the reading device and a second correction value of the reading device corrected by the first correction value on basis of the second detection result and reflects the values to the first detection result to correct a processing position in the processing subject.

Description

technical field [0001] The invention relates to a position detection 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 outer shape edge position of the conveyed object and correct the position of the conveyed object. The technology of the processing position of the conveyed object. [0003] The technique disclosed in Patent Document 1 calculates the printing position of the printed pattern based on the results of simultaneous reading of the reference scale on which a plurality of one-dimensional direction reference marks are arranged and the printed pattern on the conveyed object by the reading device, and corrects the position of the scanned image. The sub-scan is uneven. [0004] However, ...

Claims

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Application Information

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IPC IPC(8): H04N1/00H04N1/23H04N1/034
CPCH04N1/00018H04N1/00037H04N1/00681H04N1/00774H04N1/2307H04N1/034G01B11/26G01B5/0014G01B11/028G03G15/5062H04N1/00761H04N1/00702H04N1/00708H04N1/00737H04N1/00779H04N1/00785
Inventor 池本龙马中泽政元二角大祐
Owner RICOH KK