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Electrophotographic toner and image forming apparatus

A technology of electrophotography and toner, which is applied in the direction of developer, electrography, and electrorecording technology using charge patterns, etc. It can solve the problems that the long-term durability limit of the developer cannot be improved to improve the high-resolution dot reproducibility , to achieve good thin line and small dot reproducibility, less background blur, and less image degradation over time

Inactive Publication Date: 2007-12-12
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electrophotographic toners described in said patent documents cannot achieve the goal of improving high-resolution dot reproducibility or the limit of long-term durability of developers.

Method used

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  • Electrophotographic toner and image forming apparatus
  • Electrophotographic toner and image forming apparatus
  • Electrophotographic toner and image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0172] Compounds A-1 and B-1 were used to prepare a toner as follows: Based on 100 parts of toner, the total amount of compounds A-1 and B-1 was 1 part, and the amount of compound A-1 and compound B-1 The mass ratio (compound A-1:compound B-1) was 99:1.

[0173] Specifically, 84 parts of polyester resin containing 5% by mass of chloroform insoluble matter (trade name: FN119, manufactured by Kao), 8 parts of magenta pigment (trade name: ECR186Y, manufactured by Dainichi Seika Chemical Co., Ltd.), 5 parts of polypropylene (trade name: Name: NP105, manufactured by Mitsui Chemicals), a total of 1 part of compounds A-1 and B-1, and 2 parts of a toner composition of a diimonium infrared absorber (trade name: IRG023, manufactured by Nippon Kayaku) was added to Heng Scher mixer and premixed. Then, the mixture was kneaded in an extruder, then roughly ground in a hammer mill and finished in a jet mill, and classified in an airflow classifier to obtain magenta particles having a volume ...

Embodiment 2

[0176] Except that the mass ratio of Compound A-1 to Compound B-1 (Compound A-1:Compound B-1) is 75:25, and the total amount of Compounds A-1 and B-1 based on 100 parts of toner is 1 The same method as in Example 1 was used to prepare the toner and the two-component developer of Example 2, except that Compounds A-1 and B-1 were used.

Embodiment 3

[0178] Except that the mass ratio of Compound A-1 to Compound B-1 (Compound A-1:Compound B-1) is 60:40, and the total amount of Compounds A-1 and B-1 based on 100 parts of toner is 1 The same method as in Example 1 was used to prepare the toner and the two-component developer of Example 3, except that Compounds A-1 and B-1 were used.

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PUM

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Abstract

There are disclosed an electrophotographic toner including a compound represented by formula (1) and a compound represented by formula (2). In Formula (1), R1, R2, R3, and R4 each independently represent a hydrogen atom, an alkyl group or an aromatic group, and X<-> represents a molybdate anion or a tungstate anion. In Formula (2), R5<+> and R6<+> each independently represent a hydrogen ion, an ammonium ion, an iminium ion, or a phosphonium ion, and R7, R8, R9, R10, R11, R12, R13, and R14 each independently represent a hydrogen atom or an alkyl group.

Description

technical field [0001] The present invention relates to an electrophotographic toner for forming an image by electrophotography, electrostatic printing, or the like, and to an image forming apparatus using the electrophotographic toner. Background technique [0002] Various compounds are added to toners for electrophotography for the purpose of charge stabilization and fixation. For example, the basic composition of a two-component type electrophotographic toner is: 80% to 90% by mass of a binder resin; about 3% by mass to 15% by mass of a pigment; about 1% by mass to 5% by mass of a charge Control agent; about 1% to 5% by mass of anti-blocking agent, and if necessary, adding external additives to improve fluidity and the like. An electrophotographic toner having desired characteristics can be obtained by appropriately changing the composition. [0003] In an image forming device based on electrophotography, an α-Si photoreceptor is often used for ultra-high-speed printers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/08G03G15/08G03G15/20G03G15/00
CPCG03G9/0975G03G9/09733G03G9/09741G03G9/09775
Inventor 木村朗子中村安成矢追真一
Owner FUJIFILM BUSINESS INNOVATION CORP
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