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Image processing device and reading device and control method and eyewinker position display method

By using a lighting unit and a foreign object detection unit in the image reading device to detect and display the position of foreign objects on the original table, the linear image problem caused by dust or dirt adhesion in the prior art is solved, and the accuracy and efficiency of cleaning are improved. , to ensure the quality of image reading.

Inactive Publication Date: 2007-04-11
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in this "feed document reading mode", there is a problem that if dust or dirt is attached to the document reading position of the platen, at the position corresponding to the position of the dust or dirt, the Black lines appear on the read image in the scanning direction
However, in the existing image reading apparatus, since it is difficult to find the dust or dirt attached to the document table, it is also difficult to confirm where the dust or dirt is attached, or whether the dust or dirt has been removed by cleaning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] Embodiments of the image reading apparatus of the present invention will be described below. The image reading device of the present invention may be a stand-alone device or part of a device incorporating other functions such as a copier, facsimile or other multifunction machine.

[0048] Example of the structure of the image reading apparatus of the present embodiment

[0049] FIG. 1A is a block diagram showing an example of the configuration of the image reading apparatus of the present embodiment.

[0050] First, reference numeral 101 denotes a controller of the image reading apparatus according to the present embodiment, which includes a signal processing unit 112 serving as a foreign matter detection unit in FIG. 11 of the present embodiment, and a lamp control unit 109 . The CPU 107 functions as a processing unit of the image reading apparatus. Conditions and the like generated during the operation of the device are temporarily stored in the internal RAM 111 or ...

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PUM

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Abstract

There is provided an image reading apparatus for acquiring a read signal of an image by receiving and photoelectrically converting a light reflected from a document. The location of an alien substance on an original plate is detected based on a reflected light received by a light receiving unit adapted to receive a light reflected from a document. When an alien substance is detected, an illumination unit selectively illuminates the location in which the alien substance has been detected. Also, a message which prompts cleaning of the alien substance is displayed. A method of displaying the alien substance location are also provided. Thereby, the image reading apparatus of the present invention can assists a user in cleaning the alien substance such as a dust or dirt on the original plate.

Description

technical field [0001] The present invention relates to an image reading apparatus and a method for displaying the position of foreign objects, and more particularly, to an assistance provided to a user, thereby realizing the elimination of the original feeding type image reading system by clearly showing the position of the foreign objects in the actual machine. Foreign matter on the optical path between the original and the reading device, which is the cause of the line image. Background technique [0002] In the past, image reading apparatuses mounted with an auto document feeder (ADF) have been known. Such an image reading apparatus is provided with a "feed original reading mode" for passing through while an optical scanning unit for emitting light to an original and scanning light reflected from the original stops at a predetermined original reading position The automatic document feeder reads the originals by moving them one by one at a constant speed. In this "feed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/00H04N1/04
CPCH04N1/00018H04N1/00047H04N1/00013H04N1/00037H04N1/00824H04N1/0005H04N1/00063H04N2201/0098H04N1/00814H04N1/00795H04N1/00909H04N1/00002H04N1/00076
Owner CANON KK