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Additional composite function material for electrostatic developer

A composite function, developer technology, applied in the direction of developer, electrography, optics, etc., can solve the problems of poor dispersion performance and inconvenient use, and achieve the effect of overcoming the inconvenience of use and solving the hollow phenomenon of printed or copied images and characters

Active Publication Date: 2012-08-15
NANJING TESHINE IMAGING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an externally added composite functional material for an electrostatic developer, which is used together with fumed silicon dioxide to effectively overcome the problems of inconvenient use and poor dispersion performance of a single material in the past, and at the same time has the function of regulating charge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Element:

[0021] 50 parts of magnetic powder (manufactured by Rockwood, USA: TB5625);

[0022] 15 parts of silicone oil (made by Dow Corning, USA: dimethyl silicone oil);

[0023] 1.5 parts of zinc stearate (manufactured by Ferro, USA: 44HS);

[0024] 12.5 parts of fumed silica (manufactured by EVONIK, Germany: R202).

Embodiment 2

[0026] Element:

[0027] 68 parts of magnetic powder (made in Rockwood, USA: TB5625);

[0028] 12 parts of silicone oil (made by Dow Corning, USA: dimethyl silicone oil);

[0029] 4.5 parts of zinc stearate (manufactured by Ferro, USA: 44HS);

[0030] 10 parts of fumed silica (manufactured by EVONIK, Germany: R202).

Embodiment 3

[0032] Element:

[0033] 58 parts of magnetic powder (made in Rockwood, USA: TB5625);

[0034] 8.5 parts of silicone oil (manufactured by Dow Corning, USA: dimethyl silicone oil);

[0035] 2.8 parts of zinc stearate (manufactured by Ferro, USA: 44HS);

[0036] 14.5 parts of fumed silica (manufactured by EVONIK, Germany: R202).

[0037] Preparation: The ingredients of the above-mentioned Examples 1-3 were prepared.

[0038] Ingredients: 50-70 parts of magnetic powder, 8-15 parts of silicone oil, 1-5 parts of zinc stearate, 10-15 parts of fumed silica;

[0039] Mixing: Put the above-mentioned measured materials into the high-speed mixer in the order of magnetic powder, silicone oil, zinc stearate and fumed silica for mixing. First, mix at low speed for 15 seconds, then turn to high speed for 60 seconds, and pause for 60 seconds; Repeat the above steps twice, with a pause of 60 seconds in between;

[0040] Packaging: release the above mixed materials and pack them according ...

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PUM

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Abstract

The invention discloses an additional composite function material for an electrostatic developer. The additional composite function material is prepared by raw materials including, by weight, from 50 to 70 parts of magnetic powder, from 8 to 15 parts of silicon oil, from 1 to 5 parts of zinc stearate and from 10 to 15 parts of fumed silica, and the materials are sequentially fed into a high-speed mixer to be mixed according to the proportions, so that the additional composite function material is obtained. The additional composite function material is used for the electrostatic photocopying technology, can be used with single-component silica, effectively prevents a tone agent from being adhered with a photosensitive drum during usage, and solves the problem of hollow printed or photocopied images and texts. In addition, the problem of image rippling due to over thick tone agent accumulated on a magnetic roller can be accessorily solved when the additional composite function material is used in a magnetic single-component system, and the quantity of electricity of the tone agent can also be regulated.

Description

technical field [0001] The invention relates to an externally added composite functional material for electrostatic developers, belonging to the technical field of external additives for developers. Background technique [0002] In the application of electrostatic copying technology, the developer is the most important consumable material. The developer is interrelated with the normal operation of each functional system of the copier or printer, that is, the developer needs to be well matched with the xerographic copying equipment. [0003] In the formulation of the existing developer, resin, wax, CCA, colorant, etc. are the basic functional materials. The particle size is getting smaller and smaller, and the requirements for its chargeability, preservation, fluidity and cleanliness are also getting higher and higher. For example, the chargeability can be either positive or negative, and the developer raw material that can neutralize the charge of the copying equipment is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/08G03G9/097G03G9/107
Inventor 高军周建兴朱决杨道怀
Owner NANJING TESHINE IMAGING TECH
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