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Developing agent regeneration method used for electronic photography image forming apparatus

A technology of imaging equipment and electrophotography, applied in the fields of electrography, optics, instruments, etc., can solve the problems of damage to imaging equipment, bottom ash of recording medium, virtual dots and traces, etc., and achieve the effect of simple and clean process.

Active Publication Date: 2012-02-29
PRINT RITE UNICORN IMAGE PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this is not the case, the regenerated toner will cause serious background dust, dots and marks on the recording medium, and will also cause damage to the imaging device

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1, the recycling process of positive electromagnetic waste carbon powder

[0039] First, sort out the positive electromagnetic waste toner from the waste toner collected in centralized recovery, referred to as waste toner D 1 . Immediately, use a 60-200 mesh screen to screen the waste powder D 1 , keep the corresponding fine powder part after sieving.

[0040] Then, according to the weight ratio relationship: waste toner D 1 : Material M 1 =10~80:20~90, the waste powder D 1 and material M 1 mix to get mix B 1 . Among them, material M 1 It includes magnetic powder, resin, wax and positive charge control agent in the weight ratio relationship of magnetic powder: resin: wax: positive charge control agent = 10-40: 10-40: 0-5: 0-5.

[0041] After that, the traditional process measures carried out in sequence are adopted: mixing and extrusion-cooling-coarse crushing-crushing-grading, and processing of mixture B 1 . Among them, the mixture B after grading...

Embodiment 2

[0057] Embodiment 2, the recycling process of positively charged non-magnetic waste carbon powder

[0058] First, sort out the positively charged non-magnetic waste toner from the waste toner recovered centrally, referred to as waste toner D 2 . Immediately, use a 60-200 mesh screen to screen the waste powder D 2 , keep the corresponding fine powder part after sieving.

[0059] Then, according to the weight ratio relationship: waste toner D 2 : Material M 2 =10~80:20~90, the waste powder D 2 and material M 2 mix to get mix B 2 . Among them, material M 2It includes magnetic powder, resin, wax and positive charge control agent in the weight ratio relationship of magnetic powder: resin: wax: positive charge control agent = 25-60: 15-20: 0-5: 0-5.

[0060] After that, the traditional process measures carried out in sequence are adopted: mixing and extrusion-cooling-coarse crushing-crushing-grading, and processing of mixture B 2 . Among them, the mixture B after grading ...

Embodiment 3

[0070] Embodiment 3, recovery process of negative electromagnetic waste carbon powder

[0071] First, sort out the waste toner with negative electromagnetic properties from the waste toner collected in a concentrated manner, referred to as waste toner D 3 . Immediately, use a 60-200 mesh screen to screen the waste powder D 3 , keep the corresponding fine powder part after sieving.

[0072] Then, according to the weight ratio relationship: waste toner D 3 : Material M 3 =10~80:20~90, the waste powder D 3 and material M 3 mix to get mix B 3 . Among them, material M 3 It includes magnetic powder, resin, wax and negative charge control agent in the weight ratio of magnetic powder: resin: wax: negative charge control agent = 10-40:10-40:0-5:0-5.

[0073] After that, the traditional process measures carried out in sequence are adopted: mixing and extrusion-cooling-coarse crushing-crushing-grading, and processing of mixture B 3 . Among them, the mixture B after grading 3 ...

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PUM

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Abstract

The invention is a regeneration method of a developer used by electro-photography imaging equipment. The invention comprises the procedures of waste toner recovery and classification, sieving, regeneration mixture, traditional mixing mixture, etc. Partial finished carbon toner and small amount of external additive are then added. The carbon toner quality is extremely close to the sold finished carbon toner. The method of the invention features simple flow and dramatic environmental protection effect.

Description

technical field [0001] The invention relates to a method for regenerating developer used in electrophotographic imaging equipment, in particular to a method for regenerating waste powdered developer used in laser printers or copiers that can cause environmental pollution. Background technique [0002] Laser printers, fax machines, copiers and other imaging equipment produced based on the principle of electrophotographic imaging all use developer such as toner to display images such as text and patterns on paper and other media. The utilization rate of toner by an imaging device is generally between 60% and 80%, and thus, 20% to 40% of waste toner will be generated during the imaging process. Based on the calculation of 20 to 80 grams of toner remaining in a single imaging process cartridge, the waste toner produced globally every year will reach tens of thousands of tons. On the other hand, since carbon powder monomer particles generally only have a diameter of 1 to 10 μm, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G21/10
Inventor 汤付根李盛军
Owner PRINT RITE UNICORN IMAGE PROD CO LTD
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