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Polyester resin for toner, toner and electrostatic charge image developer

An electrostatic image, polyester resin technology, applied in the field of polyester resin, toner and electrostatic image developer, can solve the problems of insufficient elasticity, difficult to obtain image stability, thermal offset toner, etc.

Active Publication Date: 2015-07-08
HUBEI DINGLONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the binder resins for toners disclosed in the above-mentioned Patent Documents 1 to 4 all contain amorphous (non-crystalline) polyester resins and crystalline polyester resins, due to insufficient elasticity, thermal offset and adjustment are prone to occur during long-term continuous printing. Toner contamination makes it difficult to obtain long-term image stability

Method used

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  • Polyester resin for toner, toner and electrostatic charge image developer
  • Polyester resin for toner, toner and electrostatic charge image developer
  • Polyester resin for toner, toner and electrostatic charge image developer

Examples

Experimental program
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Embodiment 1～12

[0094] The above "toner 1 to 12" and the carrier (volume median diameter D 50 : 36μm, saturation magnetization: 60emu / g, volume resistivity: 1×10 10 Ω·cm) are mixed as follows to produce two-component "developers 1-12". 92 parts of carrier and 8 parts of toner were mixed in a mixer for 10 minutes to prepare a two-component developer; at the same time, 95 parts of toner and 5 parts of carrier were mixed to prepare a supplementary developer.

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PUM

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Abstract

The invention provides polyester resin for a toner for electrostatic charge image developing, the toner and an electrostatic charge image developer. The polyester resin for the toner, provided by the invention, contains amorphous polyester A, cross-linked polyester B and crystalline polyester C, acid components contain terephthalic acid, trimellitic anhydride and sebacic acid, in the total quantity of the acid components of the polyester resin, the content of the terephthalic acid is 80.0-94.0wt%, the content of the trimellitic anhydride is 1.0-3.0wt%, the content of the sebacic acid is 5.0-17.0wt%, and the softening point of the toner is 100-130 DEG C. According to an electrostatic charge image developer carrier and the toner, provided by the invention, the toner provided by the invention has the advantages of low-temperature fixation, preservation, excellent thermal offset resistance, excellent pollution resistance and good image stability.

Description

technical field [0001] The present invention relates to a polyester resin for toner for developing electrostatic charge image, toner and developer for electrostatic charge image, in particular to a polyester resin for developing toner for electrostatic charge image resin, and a toner containing the polyester resin, and an electrostatic charge image developer containing the toner. Background technique [0002] In recent years, with the popularization of image forming devices such as printers, copiers, and all-in-one machines using electrostatic charge image forming methods, the market has demanded high image quality, long life of the developer, high speed of the device, and energy saving. Also getting higher and higher. As the image-forming developer corresponding to the image forming apparatus, a one-component developer composed of only toner or a two-component developer composed of carrier and toner can be used. With the development of fixing at low temperature, styrene-a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G9/087
Inventor 黎文部朱顺全
Owner HUBEI DINGLONG CO LTD
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