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Toner and process for producing toner

A technology of toner and toner particles, applied in the field of toner, which can solve the problems of preservation, fluidity, chargeability, image deficiency, lowering of toner glass transition temperature, etc., and achieve storage stability Excellent, excellent development durability

Inactive Publication Date: 2006-12-27
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned toner is compatible with the wax and the binder resin, and the glass transition temperature of the toner is lowered accordingly. Especially when it is desired to improve the low-temperature fixing performance, the storage stability, fluidity, and chargeability are easily affected. , especially in continuous copying, a significant drop in density or image loss is prone to occur

Method used

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  • Toner and process for producing toner
  • Toner and process for producing toner
  • Toner and process for producing toner

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0212]As the preparation method of the toner of the present invention, the following methods can be cited: using the suspension polymerization method described in JP-A-36-10231, JP-A-59-53856, JP-A-59-61842, directly The method of producing toner is used to produce toner; it is produced by emulsion polymerization represented by the soap-free polymerization method that directly polymerizes monomers to produce toner in the presence of a soluble water-soluble polymerization initiator into toner; using surface polymerization method such as microcapsule preparation method, in-site polymerization method to make toner; using coagulation method to make toner; using JP-A-62-106473 bulletin or JP-A-63-186253 The associative polymerization method disclosed in the gazette is to aggregate at least one or more particles to obtain particles with a desired particle size; toner is produced by dispersion polymerization characterized by monodispersion; toner is produced by making necessary The r...

preparation example 1

[0252] In a 4-necked bottle equipped with Dimro reflux device and Dean-Stark water separator, add 1900 parts by mass of benzene, 1400 parts by mass of myristic acid (C 14 h 28 o 2 ), palmitic acid (C 16 h 32 o 2 ), stearic acid (C 18 h 36 o 2 ), arachidic acid (C 20 h 40 o 2 ), behenic acid (C 20 h 40 o 2 ) mixture (carboxylic acid component), 1300 parts by mass by butanol (C 4 h 10 O), myristyl alcohol (C 14 h 30 O), palmityl alcohol (C 16 h 34 O), stearyl alcohol (C 18 h 38 O), peanut alcohol (C 20 h 42 O) The mixture composed of 130 parts by mass of p-toluenesulfonic acid was stirred and refluxed for 6 hours, followed by azeotropic distillation with a water separator. After washing well with sodium bicarbonate, it was dried to remove benzene. The product was recrystallized with benzene, washed and refined to obtain ester wax 1.

preparation example 2～4

[0254] Ester waxes 2-4 were prepared similarly to the preparation example 1 of ester wax except having changed the kind and quantity of a carboxylic acid component and an alcohol component.

[0255]

[0256]

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PUM

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Abstract

A toner that excels in low-temperature fixability and anti-offsetting property and further in storability in a developing processor. There is provided a toner which in a DSC curve obtained by measuring the toner by means of a differential scanning calorimeter, exhibits a glass transition temperature (Tg1) determined by the first scanning of 50.0 to 70.0 DEG C and exhibits a temperature difference (Tg1-Tg2) between glass transition temperature (Tg1) determined by the first scanning and glass transition temperature (Tg2) determined by the second scanning of 3.0 to 20.0 DEG C.

Description

technical field [0001] The present invention relates to a toner used in electrophotography, electrostatic recording, magnetic recording, and toner jetting, and a method for producing the toner. Background technique [0002] In the conventional electrophotography method, various methods are used to form an electrostatic latent image on a photoreceptor, then develop the electrostatic latent image with toner, form a toner image on the photoreceptor, and transfer the toner image to a photoreceptor as required. After being transferred onto a transfer material such as paper, the toner image is fixed on the transfer material by a fixing method such as heating, pressing, heat and pressure, or solvent vapor to obtain an image (for example, see Non-Patent Document 1). [0003] Various methods have been proposed as a method of development using toner or a method of fixing a toner image, and a method suitable for each image forming process can be adopted. In the past, the toner used fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/087G03G9/08
CPCG03G9/0806G03G9/08782G03G9/08797G03G9/08795G03G9/0821G03G9/0804
Inventor 绫木保和阿部浩次
Owner CANON KK
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