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Imaging equipment

A technology of imaging equipment and paper, which is applied in the direction of equipment, instruments, and electrical recording technology using charge graphics, which can solve the problems of image position shifting and tilting, etc.

Inactive Publication Date: 2004-08-11
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If documents are delivered under defective placement conditions, problems such as shifting or skewing of image positions may occur

Method used

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  • Imaging equipment
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0037] FIG. 1 is a vertical sectional view showing the overall configuration of an image reading apparatus according to an embodiment of the present invention. In Fig. 1, reference numeral 1 represents an image reading device, and the image reading device roughly includes an optical system (optical system) 2 and an ADF (Automatic Document Feeder, automatic document feeder) 3 placed on the optical system 2, and used as A scanner device capable of reading images on both surfaces of a document.

[0038] The optical system 2 includes a CCD reading unit (CCD: Charge Coupled Device, Charge Coupled Device) 11 serving as a first reading unit; a light source unit 13 ; and a mirror unit 14 . By using the light source unit 13 and the mirror unit 14, the optical system 2 causes the CCD reading unit 11 placed at a predetermined position to read an image of a document placed on a document platform 12 made of plate glass and supported on flat state. The CCD reading unit 11 includes an imag...

no. 2 example

[0125] In the first embodiment, when the document is not the standard size in step S12, the controller 41 proceeds to step S31, but when the start signal is not input from the operation part 46 at this time, the controller 41 returns to step S12 again. Therefore, preparation for document feeding and delivery (establishing a state where the document tray 22 is raised, the lead-in roller R1 is in contact with the topmost layer of the document stack, and the document can be immediately delivered) cannot be performed unless the user presses the "START" key K13 , and operate the operation part 46 to instruct to read the document. Therefore, in the second embodiment, even when the activation signal is not input, if the predetermined time (second predetermined time) has elapsed, the document tray 22 is brought into the second standby state to prepare for supply and delivery of documents.

[0126] Note that since the structure and operation principle of the image reading apparatus 1 a...

no. 3 example

[0154] The above-mentioned embodiments have explained the modes in which the paper feeder of the present invention is applied to image reading apparatuses, but it is also possible to apply the present invention to image forming apparatuses such as printer apparatuses, multifunctional apparatuses having scanner functions, printer functions, and facsimile functions . The third embodiment explains the case where the present invention is embodied as an image forming apparatus.

[0155] FIG. 16 is a vertical sectional view showing a brief configuration of the image forming apparatus according to the present embodiment. The image forming apparatus 100 of the present embodiment includes: the image reading apparatus 1 described above; an image forming unit 210 for forming an image on paper; a post-processing unit 260 for performing post-processing on the paper imaged thereon; and a paper conveying unit 270 Used to supply and transport paper to the imaging unit 210 . The image formin...

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PUM

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Abstract

When a document detector provided on a document tray is ON (S11: YES), a controller judges whether or not a document is of a standard size, on the basis of a document size table stored in a storing unit (S12). When the document is of a standard size (S12: YES), after a predetermined time has elapsed (S13: YES), the controller elevates / lowers the document tray on the basis of a detection output of a guide-in roller position detector and causes the document tray to wait in a state capable of supplying and conveying the topmost layer of documents immediately. An image forming apparatus thus constructed can make a judgment as to whether or not to execute supply and conveyance of documents, according to the mount state of the documents.

Description

technical field [0001] The present invention relates to an image forming apparatus including a sheet feeder installed in image reading apparatuses such as copiers and scanners, or in image forming apparatuses such as printers and facsimiles, for sheet-by-sheet Sheets of paper such as documents stored in stacks in the paper storage device are taken out, and the sheets are supplied and conveyed to a paper conveyance path. Background technique [0002] In recent years, a device that automatically conveys documents in the form of sheets to a reading device and reads the documents one by one is installed in an image forming device or the like, performing efficient image reading or image forming operations. In addition, with the advancement of digital technology, the speed of document reading, the speed of conversion to electronic data, and the speed of imaging from electronic data are faster, and the number of sheets of documents that can be set at one tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/00B65H1/00B65H1/04B65H1/14B65H1/24
CPCB65H2511/12B65H2405/1117B65H1/14B65H2301/36212G03G15/607B65H2513/40B65H2511/20B65H1/04B65H2403/411B65H2220/01B65H2220/11B65H2220/02
Inventor 藤井修二石仓薰今井孝藤本修
Owner SHARP KK