Unlock instant, AI-driven research and patent intelligence for your innovation.

Image forming apparatus

An imaging device and an image-carrying technology, which are applied to the equipment, instruments, and optics of the electrical recording process using charge patterns, and can solve the problems that the smoothing effect of the recording material cannot be obtained.

Active Publication Date: 2015-10-14
CANON KK
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, in the case where the transfer roller was pressed into contact with the inner side surface of the transfer belt, it was confirmed that even when the transfer roller was imparted with a reverse arch, smoothing of wrinkles on the recording material during the passage of the recording material through the transfer portion could not be obtained smoothing effect of

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
  • Image forming apparatus
  • Image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0021] (imaging equipment)

[0022] figure 1 is a schematic diagram illustrating the structure of the imaging device 100 . like figure 1 As shown, the image forming apparatus 100 is a tandem type intermediate transfer type full color printer in which image forming portions PY, PM, PC, and PK as process cartridges are arranged along the upper surface of the intermediate transfer belt 40 .

[0023] At the image forming portion PY, a yellow toner image is formed on the photosensitive drum 1Y, and then the yellow toner image is primarily transferred onto the intermediate transfer belt 40 . At the image forming portion PM, a magenta toner image is formed on the photosensitive drum 1M, and then the magenta toner image is primarily transferred onto the intermediate transfer belt 40 . At image forming sections PC and PK, cyan and black toner images are formed on photosensitive drums 1C and 1K, respectively, and then primarily transferred onto intermediate transfer belt 40 .

[002...

no. 2 example

[0155] Figure 10 is a schematic diagram of the structure of the image forming apparatus in the second embodiment. Such as figure 1 As shown, in the first embodiment, four draft rollers draft the secondary transfer belt 12 in a trapezoidal shape. On the other hand, in the second embodiment, three draft rollers draft the secondary transfer belt 12 in a triangular shape. Except for the draft shape of the secondary transfer belt 12 and the number of draft rollers, the configuration is similar to that of the first embodiment, and therefore in the following description, the same constituent elements as those of the first and second embodiments are used. figure 1 The same reference numerals or symbols are indicated as those in , and redundant descriptions will be omitted.

[0156] Such as Figure 10 As shown, the secondary transfer belt 12 of the secondary transfer belt unit 36B is drawn by the supply surface forming roller 21 , the draft roller 22 and the secondary transfer rol...

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

An image forming apparatus includes: an image bearing member; a toner image forming unit; an endless transfer belt; a transfer roller urged from an inner peripheral surface of the transfer belt toward the image bearing member via the transfer belt; a feeding surface forming roller, provided downstream of the transfer roller with respect to a traveling direction of the transfer belt, having such a shape that a diameter at each of end portions is smaller than a diameter at a central portion with respect to a rotational axis direction; and a stretching roller, downstream of the feeding surface forming roller with respect to the traveling direction of the transfer belt, having such a shape that a diameter at each of end portions is larger than a diameter at a central portion with respect to the rotational axis direction.

Description

technical field [0001] The present invention relates to an image forming apparatus for transferring a toner image carried on an image bearing member to a recording material carried on a transfer belt. Background technique [0002] As described in Japanese Laid-Open Patent Application (JP-A) 2012-128228, an image forming apparatus in which a recording material is carried on a transfer belt and passes through a transfer portion has been widely used, At the transfer portion, a toner image carried on an intermediate transfer belt as an example of an image bearing member is transferred onto a recording material carried on the transfer belt. [0003] In an image forming apparatus using a transfer belt, in the case where a low-rigidity recording material such as thin paper or a recording material that is corrugated passes through the transfer portion and a toner image is transferred onto the recording material, at some Wrinkles are generated on the recording material in some cases...

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 Applications(China)
IPC IPC(8): G03G15/16
CPCG03G15/16G03G15/1685G03G2215/1623G03G15/1615G03G15/1605G03G15/167
Inventor 小久保洋笕丰小俣晴彦藤田岳小笹秀明
Owner CANON KK