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Thermosetting resin and preparation method thereof, carrier and electrostatic charge image developer

An electrostatic charge image and thermoplastic resin technology, applied in the field of developer and carrier for electrostatic charge image development, can solve the problem that it is difficult to balance the bonding force between the coating resin and the magnetic core material, and the charge stability of the carrier can achieve internal pollution evaluation Excellent, sufficient bond strength, high stability effect

Active Publication Date: 2012-12-05
HUBEI DINGLONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the carriers disclosed in the above-mentioned patents are all coated with resin on the surface of the magnetic core material, it is difficult to balance the contradiction between the adhesive force between the coated resin and the magnetic core material and the stability of the charge of the carrier.

Method used

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  • Thermosetting resin and preparation method thereof, carrier and electrostatic charge image developer
  • Thermosetting resin and preparation method thereof, carrier and electrostatic charge image developer
  • Thermosetting resin and preparation method thereof, carrier and electrostatic charge image developer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] Mix 8 parts of cyan toner with 92 parts of carrier 1, and mix in a mixer for 10 minutes to prepare a cyan two-component developer. The absolute value of the triboelectric charge amount when the above-mentioned toner and carrier were mixed for 10 minutes was defined as the initial triboelectric charge amount. Simultaneously, 95 parts of cyan toner was mixed with 5 parts of carrier 1 to prepare a cyan supplementary developer.

[0126] Using a commercially available color copier (printing speed: color 50ppm, black and white 65ppm. Transformed into a test machine) as an image forming device, put the above-mentioned cyan two-component developer in the cyan position of the developing device, and put the cyan supplementary developer in At the corresponding locations, an image forming test was performed under a normal temperature and normal humidity (20° C. / 50% RH) environment. After printing is completed, initial evaluation and durability test are performed.

[0127] 100,000...

Embodiment 2～16

[0162] In Example 1, evaluation was performed under the same conditions except that the carrier 1 was replaced with carriers 2 to 16 . The evaluation results are shown in Table 1.

Embodiment 17

[0170] Mix 8 parts each of yellow toner, magenta toner, cyan toner, and black toner with 92 parts of carrier 1 respectively, and mix each in a mixer for 10 min to prepare a 4-color two-component development agent. Simultaneously, 95 parts each of yellow toner, magenta toner, cyan toner, and black toner were mixed with 5 parts of carrier 1 respectively to prepare 4-color supplementary developers.

[0171] Use a commercially available color copier (printing speed: 50ppm for color, 65ppm for black and white. Transformed into a test machine) as an image forming device, put the above-mentioned 4-color two-component developer in the corresponding 4-color position in the developing device, and place the 4-color The supplementary developer was placed in the corresponding position, and the image formation test was carried out under normal temperature and normal humidity (20°C / 50%RH) and high temperature and high humidity (30°C / 80%RH) environments. After printing is completed, initial ...

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Abstract

The invention relates to a thermosetting resin and a preparation method of the thermosetting resin, a carrier and an electrostatic charge image developer. The contradiction between binding power of a coating resin and a magnetic core material and the stability of electric quantity of the carrier is difficultly balanced even if the resin is coated on the surface of the magnetic core material in the existing carrier is solved. The thermosetting resin disclosed by the invention includes a monomeric unit shown in a structural formula (A). The carrier disclosed by the invention comprises the magnetic core material and a coating layer for coating the magnetic core material; the coating layer includes thermoplastic resin, conductive particles and the thermosetting resin, and the developer disclosed by the invention includes the carrier. The coating layer of the carrier has wear resistance and impact resistance; the formed coating layer does not easily fall off from the magnetic core material after being abraded for a long time, and meanwhile, stable electric quantity of the carrier can be provided. The developer disclosed by the invention has excellent effects on electric quantity of the carrier, image concentration, carrier attachment, tone change and built-in pollution evaluation, and is high in stability and good in durability.

Description

technical field [0001] The present invention relates to a thermosetting resin and its preparation method, as well as a carrier for electrostatic image development and a developer containing the carrier. Background technique [0002] Developers can be divided into one-component developers and two-component developers. One-component developers are only composed of toners, including magnetic one-component and non-magnetic one-component developers; two-component developers Composed of carrier and toner, the carrier mixes with the toner, rubs the toner to charge the toner, and transports the toner to the photosensitive drum to form an electrostatic latent image. The two-component developer system is easy to achieve stable toner charge and obtain high-quality images, so it is widely used in high-speed printers, copiers, multi-function machines and other fields. [0003] The carrier of the two-component developer includes a magnetic carrier without a coating layer and a magnetic c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F122/14G03G5/147G03G15/08
Inventor 朱顺全黎文部兰泽冠
Owner HUBEI DINGLONG CO LTD
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