Image forming apparatus and conveyance device

A technology of image and conveying rollers, which is applied to the electrical recording process using charge graphics, the equipment of the electrical recording process using charge graphics, and electrography, etc. It can solve the problems of paper skew correction and drive timing changes that cannot be performed well. and offset issues

Inactive Publication Date: 2009-11-18
FUJIFILM BUSINESS INNOVATION CORP
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, variations and deviations occur in the driving timing of the second transport roller, and skew correction of the paper cannot be performed well

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Image forming apparatus and conveyance device
  • Image forming apparatus and conveyance device
  • Image forming apparatus and conveyance device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] figure 1 An image forming apparatus 10 according to an exemplary embodiment of the present invention is shown. The image forming apparatus 10 has an image forming apparatus main body 12 . The image forming apparatus main body 12 includes an image forming section 14 ; a paper feeder 54 that conveys paper to the image forming section 14 ; a power supply unit 16 ; and a controller 200 serving as control means. In addition, paper is discharged to a paper discharge portion 15 provided at an upper portion of the image forming apparatus main body 12 after image formation.

[0033]The image forming section 14 is an electrophotographic unit that forms a color image. The image forming section 14 has drum-shaped photoreceptors 22Y, 22M, 22C, and 22B as image holders that hold images of developing materials; 22M, 22C, and 22B uniformly charged c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an image forming apparatus, comprising: an image forming part; a first conveying roller, which conveys a recording medium to the image forming part; a reversible second conveying roller, which is positioned at the between the first conveying roller and the image forming portion; a contact member in contact with the second conveying roller, forming a nip between the second conveying roller and the contact member; a first conveying roller a driver that rotationally drives the first conveying roller in the same direction as the recording medium conveying direction; and a drive transmission mechanism that performs drive transmission from the first conveying roller driver to the second conveying roller, to start rotating the second conveying roller in a direction opposite to the conveying direction of the recording medium before the leading edge of the recording medium reaches the nip.

Description

technical field [0001] The present invention relates to an image forming apparatus such as a copying machine, a facsimile machine, a printer, and the like and a conveying apparatus used in the image forming apparatus. Background technique [0002] In this type of image forming apparatus, there are equipped with a first conveying roller that conveys a recording medium such as paper to the image forming section; and a contact member, which is in contact with the second conveying roller to form a nip, and it is known to temporarily stop the leading edge of the recording medium at the nip during conveying so as to correct the skew of the recording medium. In addition, Japanese Published Unexamined Patent Application No. 2003-63698 discloses a technique of starting to rotate the second conveying roller toward the direction opposite to the conveying direction of the recording medium or conveyed matter, and stopping the second conveying roller. Reverse rotation of the rollers. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/00
CPCG03G2215/00405G03G15/6564G03G15/1665G03G15/6558G03G15/6567G03G15/00
Inventor 吉田和彦
Owner FUJIFILM BUSINESS INNOVATION CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap