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Powder box

The technology of a powder cartridge and a powder bin is applied in the field of powder cartridges of jump development, which can solve the problems of lowering stability, lowering image output accuracy, lowering image printing quality, etc., and achieves good wear resistance, maintains stability, and improves stability. sexual effect

Active Publication Date: 2013-10-02
PRINT RITE UNICORN IMAGE PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The toner in the powder chamber is easy to adhere to the surface of the spacer sleeve and form carbon marks, which reduces the stability of the control of the distance between the photosensitive drum and the developing roller
[0005] Obviously, the reduction in the stability of the gap control between the photosensitive drum and the developing roller will reduce the printing quality and reduce the image output accuracy; the waste of the photosensitive drum photosensitive coating will also reduce the printing quality of the image

Method used

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  • Powder box
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, the toner box 100 has an end cover 110 , an end cover 120 , a photosensitive drum 130 , a toner bin 140 , and a waste toner bin 150 .

[0022] Such as figure 2 As shown, the developing roller 160 is rotatably supported on the end wall 141 and the end wall 142 of the powder bin 140 . The working layer 161 of the developing roller 160 is located inside the end wall 141 and the end wall 142 , and the two ends of the rotating shaft 162 of the developing roller 160 pass through the end wall 141 and the end wall 142 respectively and protrude outward. The two rings 163 are sleeved on two ends of the rotating shaft 162 respectively, and are located outside the end wall 141 and the end wall 142 of the 140 . Two hollow annular spacers 133 are respectively sleeved on two ends of the drum body 131 of the photosensitive drum 130 , and are located outside the end wall 141 and the end wall 142 in the axial direction. The outer peripheral surface of the s...

Embodiment 2

[0025] The difference between the second embodiment and the first embodiment is that there is no ring 163 in the second embodiment, and the second circumferential surface is the outer circumferential surface of the shaft 162 itself.

Embodiment 3

[0027] The difference between the third embodiment and the first embodiment is that there is no ring 163 in the third embodiment, and the second peripheral surface is the outer peripheral surface of the shoulder formed on the shaft 162 .

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Abstract

The invention relates to a powder box which comprises a photosensitive drum, a development roller, distance pieces and a powder bin, wherein a pair of distance pieces is arranged on the photosensitive drum and is provided with a first circumferential surface coaxial with the photosensitive drum; a second circumferential surface coaxial with the development roller is arranged on the development roller; the first circumferential surface is in exterior contact with the second circumferential surface; and the diameter of the first circumferential surface is greater than the diameter of the second circumferential surface. According to the powder box provided by the invention, the distance pieces can be prevented from damaging a photosensitive coating of the photosensitive drum, the service lives of the distance pieces are prolonged, and the space control stability between the photosensitive drum and the development roller is improved.

Description

technical field [0001] The invention relates to a jumping developing powder box. Background technique [0002] A predetermined distance needs to be set between the photosensitive drum and the developing roller of the toner box of jumping development. The photosensitive drum is composed of a rotating shaft, a cylindrical drum body and end caps. The end caps are installed at both ends of the drum body, the rotating shaft is installed on the end caps, and the drum body is coated with a photosensitive coating. The developing roller is composed of a rotating shaft and a working layer sleeved on the rotating shaft, wherein the working layer can be a metal layer or an elastic layer. The spacer is a barrel-shaped part, including a barrel wall and a barrel bottom provided with round holes. When assembling, the round hole arranged at the bottom of the barrel is set on the rotating shaft of the developing roller, the barrel wall is tightly set on the outside of the working layer of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/00G03G15/08
Inventor 何永刚
Owner PRINT RITE UNICORN IMAGE PROD CO LTD