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Toner for electrostatic image development

一种静电荷图像、调色剂的技术，应用在显影剂、电记录术、仪器等方向，能够解决得不到耐热保管性等问题，达到优异耐热保管性和耐破碎性的效果

Active Publication Date: 2014-05-28
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, due to the compatibilization of the crystalline resin and the amorphous resin, there is a problem that plasticization of the mixed resin occurs, and sufficient heat-resistant storage properties cannot be obtained.

Method used

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  • Toner for electrostatic image development
  • Toner for electrostatic image development
  • Toner for electrostatic image development

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0167] Hereinafter, specific embodiments of the present invention will be described, but the present invention is not limited thereto.

Synthetic example 1

[0169] Put 148.0 mg (1.0 mmol) of potassium trifluoroallyl borate, 46.8 mg (0.25 mmol) of 4-bromoanisole, and K in a PYREX (registered trademark) tube substituted with argon. 2 CO 3 104.0mg (0.75mmol), 5.0mg (0.0075mmol) of PdCl2 (dtbpf), and then add 2.5ml of isopropanol / water (2 / 1) solution, and seal it with a rubber plug. The container was irradiated with ultrasonic waves at 120°C for 30 minutes.

[0170] Ammonium chloride and diethyl ether were added to the reaction mass, the ether phase was separated, the resulting reaction mixture was purified by thin layer chromatography using hexane as the eluent, and then washed with diethyl ether, filtered, and dried to obtain the formula ( 2-1) The specific monomer represented (hereinafter referred to as "specific monomer [1]").

Synthetic example 2

[0172] In Synthesis Example 1, except that 4-bromoanisole was changed to 3-bromoanisole, the specific monomer represented by the above formula (2-2) (hereinafter referred to as "specific Monomer [2]".).

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Abstract

A toner for electrostatic image development having sufficient low-temperature fixing properties, and excellent heat resistant storage stability and crush resistance is provided. In toner particles containing at least a binder resin, the binder resin contains a polymer having a structural unit represented by a general formula (1), wherein R1, R2, and R3 each independently represent a hydrogen atom, a hydroxyl group, or an alkoxy group, or two adjacent groups of R1, R2, and R3 combine to form -O(CH2)iO-, where i represents an integer of 1 or 2, provided that at least one of R1, R2, and R3 is an alkoxy group, or two adjacent groups combine to form -O(CH2)iO-; and R4 represents a hydrogen atom, a halogen atom, an alkyl group, a hydroxyl group, or an alkoxy group.

Description

Technical field [0001] The present invention relates to a toner for developing an electrostatic charge image (hereinafter, simply referred to as “toner”) used in image formation of an electrophotographic method. Background technique [0002] Conventionally, as resin materials used in toners, for example, polystyrene resins, styrene-acrylic copolymer resins, polyester resins, epoxy resins, butyral resins, and polyesters with grafted acrylic resins can be cited. Hybrid resins such as resins are designed to suit the purpose of the toner. [0003] In particular, the resin material of the toner for fixing the heating roller is required to improve the fixability to the recording medium and the offset resistance. So far, high molecular weight thermoplastic resins or partially crosslinked thermoplastic resins have been mainly used. [0004] With the increase in speed and energy saving of printers and copiers, toners with excellent low-temperature fixability are gradually required. However, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/08G03G9/087
CPCG03G9/08706
Inventor 午菴一贺神山干夫田所肇
Owner KONICA MINOLTA INC
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