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Develop toner for non-contact photographic fixing of engineering drawing copier

A non-contact, engineering drawing technology, applied in the direction of developer, electrography, optics, etc., can solve the problems of inability to use and save the content of the file, hard texture of the developer toner for fixing, and insufficient softening of the product texture, etc. To meet the needs of image development chargeability, reduce softening point, and achieve the effect of image durability

Active Publication Date: 2015-03-25
NANJING TESHINE IMAGING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The developing toner for fixing used in the traditional hot-press fixing system is relatively hard, and needs to withstand pressure at a certain temperature for copying
The non-contact flash fixing method requires the developer to meet the instantaneous low temperature and pressure-free fixing conditions. If the traditional fixer is used, there will be serious problems such as weak fixation, and the content of the document cannot be used and saved after copying.
The reason is that the traditional fixer uses aromatic copolymers as the main raw material, and the product texture is not softened enough, and a certain temperature is required.
To improve the above problems, the softening point needs to be lowered. At the same time, in order to meet the low temperature conditions, the chargeability of the product needs to be improved. However, the above requirements cannot be met by improving the ratio of raw materials, and the selection of raw materials needs to be re-selected.
For toners that are very suitable for non-contact fixing systems, while meeting large paper sizes and high-speed copying, there are few reports in the existing patents and scientific literature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Element:

[0025] 25 parts of polyester resin (glass transition temperature 56°C, softening point 104-110°C, Mw: 12000-35000, Mn: 4500-7200);

[0026] 45 parts of bisphenol A epoxy resin (glass transition temperature 45°C, softening point 70-80°C, Mw: 3000-7000, Mn: 1500-2500);

[0027] 12 parts of magnetic powder (E8706 manufactured by LANXESS, Germany);

[0028] 1.5 parts of carbon black (manufactured by Mitsubishi Chemical: MA-100);

[0029] 0.5 parts of charge control agent (manufactured by Dinglong Chemical in Hubei, China: N33);

[0030] 1 part of fumed silica (TG-530 manufactured by Cabot, USA).

Embodiment 2

[0032] Element:

[0033] 50 parts of polyester resin (glass transition temperature 56°C, softening point 104-110°C, Mw: 12000-35000, Mn: 4500-7200);

[0034] 28 parts of bisphenol A epoxy resin (glass transition temperature 45°C, softening point 70-80°C, Mw: 3000-7000, Mn: 1500-2500);

[0035] 20 parts of magnetic powder (E8706 manufactured by LANXESS, Germany);

[0036] 5 parts of carbon black (manufactured by Mitsubishi Chemical: MA-100);

[0037] 1 part of charge control agent (manufactured by Dinglong Chemical in Hubei, China: N33);

[0038] 0.8 part of fumed silica (TG-530 manufactured by Cabot, USA).

Embodiment 3

[0040] Element:

[0041] 44 parts of polyester resin (glass transition temperature 56°C, softening point 104-110°C, Mw: 12000-35000, Mn: 4500-7200);

[0042] 40 parts of bisphenol A epoxy resin (glass transition temperature 45°C, softening point 70-80°C, Mw: 3000-7000, Mn: 1500-2500);

[0043] 15 parts of magnetic powder (E8706 manufactured by LANXESS, Germany);

[0044] 3 parts of carbon black (manufactured by Mitsubishi Chemical: MA-100);

[0045] 1 part of charge control agent (manufactured by Dinglong Chemical in Hubei, China: N33);

[0046] 0.6 part of fumed silica (TG-530 manufactured by Cabot, USA).

[0047] Preparation: The ingredients of the above-mentioned Examples 1-3 were prepared.

[0048] Pre-mixing: 25-50 parts of bisphenol A polyester resin, 25-50 parts of bisphenol A epoxy resin, 10-20 parts of magnetic powder, 1-5 parts of carbon black, 0.5 parts of charge control agent ~ 1 part is put into a high-speed mixer for mixing. First, mix at low speed for 30 se...

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PUM

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Abstract

The invention discloses a develop toner for non-contact photographic fixing of an engineering drawing copier, which consists of the following materials with respective components by weight: 25 to 50 components of bisphenol A polyester resin, 25 to 50 components of bisphenol A epoxy resin, 10 to 20 components of magnetic powder, 1 to 5 components of carbon black, 0.5 to 1 components of charge control agent and 0.5 to 1 components of fumed silica, wherein the materials sequentially undergo premixing, extrusion mixing, cooling, crushing, fluid energy milling classification, fine powder classification and externally adding and mixing, and finally are sieved, packaged and prepared into a color toner product. The develop toner overcomes the defect of the photographic fixing of the conventional develop toner, improves the firmness of the photographic fixing, satisfies the low temperature pressure-free photographic fixing, and increases the firmness to more than 95%.

Description

technical field [0001] The invention relates to a developing toner for non-contact fixing of engineering drawing copiers, belonging to the technical field of developers. Background technique [0002] The paper used in engineering drawing documents is usually in a large format, usually A0 format. For large paper, the speed of copier design is getting faster and faster. The original engineering drawing copier uses a hot-press fixing system, which requires high-temperature fixing, while the existing The advanced engineering drawing copier adopts non-contact flash fixing method, which makes the printer display high-intensity light several times per second (such as 1500-2500 times), so that the developer is melted on the printing paper, which can be controlled within one minute. Or print around 500 sheets. [0003] The developing toner for fixing used in the traditional heat-press fixing system is relatively hard, and it needs to withstand pressure at a certain temperature for c...

Claims

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Application Information

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