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Image reading apparatus and image forming apparatus

An image reading device and a technology for reading control, which are applied to image communication, permanent visual display devices, instruments, etc., can solve the problems of reduced image quality and inaccurate gain setting value in monochrome mode.

Inactive Publication Date: 2018-03-30
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, the gain settings for monochrome mode are inaccurate
As a result, the read image quality in monochrome mode is degraded

Method used

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  • Image reading apparatus and image forming apparatus
  • Image reading apparatus and image forming apparatus
  • Image reading apparatus and image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] An image reading device (image forming device) according to an embodiment of the present invention will be described by taking, as an example, a multi-functional peripheral equipped with a scanning function, a copying function, a printing function, and the like.

[0023] (The overall structure of the digital multifunction machine)

[0024] Such as figure 1 As shown, the digital multifunction peripheral 100 includes an image reading unit 2 to which a document conveyance unit 1 is attached. The image reading unit 2 reads a document D to be read to generate image data. Furthermore, although the digital multi-function peripheral 100 is a monochrome machine, as reading modes, a color mode for generating color image data and a monochrome mode for generating monochrome image data are mounted.

[0025] In addition, the multifunction peripheral 100 includes a printing unit 7 composed of a paper feeding unit 3 , a paper feeding unit 4 , an image forming unit 5 , and a fixing un...

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PUM

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Abstract

An image reading device (2), at a starting time point, starts one mode gain setting processing, which is processing of obtaining a gain set value of a shared amplifier (220) in one of a color mode and a monochrome mode. After the one mode gain setting processing is completed, the image reading device performs an other mode gain setting processing, which is processing of obtaining a gain set value of the shared amplifier (220) in the other mode. In a case where an instruction to perform a reading job in the one mode is received while the other mode gain setting processing is being performed, the image reading device (2) discontinues the other mode gain setting processing and performs the reading job in the one mode.

Description

technical field [0001] The present invention relates to an image reading device and an image forming device. Background technique [0002] An image forming apparatus such as a copier or a digital multifunction peripheral includes an image reading device that reads a document and generates image data. Also, the image reading device is provided with, for example, a light source, an image sensor, an amplifier, an A / D converter, and the like. [0003] The light source generates light to irradiate a document to be read. The image sensor receives reflected light reflected by the document, and outputs an analog signal corresponding to the light amount of the reflected light it receives. The amplifier amplifies the analog signal from the image sensor. The A / D converter performs A / D conversion processing on the analog signal amplified by the amplifier. [0004] In such an image reading apparatus, a gain setting value of an amplifier is calculated when the main power is input or w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/00H04N1/46
CPCH04N1/04H04N1/486G06K15/1878H04N1/40
Inventor 松井信哉
Owner KYOCERA DOCUMENT SOLUTIONS INC
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