Developing method and developing device using the same

一种显影方法、显影装置的技术，应用在显影剂、应用电荷图形的电记录工艺、应用电荷图形的电记录工艺等方向，能够解决图像浓度变化和摩擦变化少等问题，达到良好画质、全面均匀性高、防止调色剂残余的效果

Inactive Publication Date: 2005-11-02
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a developing method, which is a developing method using a multi-stage developing method. The developer layer on the developing sleeve does not have the problem of poor coating such as streaks and spots, and can prevent external Accumulation of additives and toner residues on the surface of the carrier, even after a long period of time in different environments, uniformity across the board is high, and changes in image density and friction changes are small

Method used

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  • Developing method and developing device using the same
  • Developing method and developing device using the same
  • Developing method and developing device using the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0253] Preparation of toner dispersion

[0254] First, an aqueous solution having a volume mixing ratio of methanol:water of 45:55 was prepared. 10 ml of this aqueous solution was put into a 30 ml sample container (Nichiden Rika Glass: SV-30), 20 mg of toner was added to the liquid surface, and the container was capped. After that, use a Yayoi vibrator (style: YS-LD) at 2.5S -1 Vibrate for 10 seconds. At this time, the angle of vibration is such that if the directly above (vertical) of the vibrator is regarded as 0 degrees, the vibrating pillar is moved 15 degrees in front and 20 degrees in the rear. The sample container is fixed on a fixing bracket (fixing the cover of the sample container on the extension line of the post) installed in front of the post. After taking out the sample container, the dispersion liquid after 30 seconds was used as the dispersion liquid for measurement.

[0255] Determination of transmittance

[0256] The above-mentioned dispersion liquid was...

Embodiment

[0290] Hereinafter, the present invention will be described in more detail based on specific production examples and examples, but the present invention is not limited thereto.

manufacture example

[0292] As the material of the ethylene copolymer unit, 10 parts by weight of styrene, 5 parts by weight of 2-ethylhexyl acrylate, 2 parts by weight of fumaric acid, and 5 parts by weight of α-methylstyrene dimer are added with diperoxide Cumyl was added to the dropping funnel. In addition, as a material for the polyester unit, 25 parts by weight of polyoxypropylene (2.2)-2,2-bis(4-hydroxyphenyl)propane, 15 parts by weight of polyoxyethylene (2.2)-2,2-bis(4 -Hydroxyphenyl) propane, 9 parts by weight of terephthalic acid, 5 parts by weight of trimellitic anhydride, 24 parts by weight of fumaric acid and dibutyltin oxide add in the four-necked flask made of glass of 4L, install on the four-necked flask A thermometer, a stirring rod, a condenser, and a nitrogen inlet tube were used to set the four-neck flask in a mantle-type resistance heater. Next, after replacing the inside of the four-necked flask with nitrogen, the temperature was slowly raised while stirring, and at a temper...

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Abstract

The present invention relates to a developing method using a developing device including at least: a first developer bearing member arranged to be opposed to an image bearing member; and a second developer bearing member arranged on a downstream side of a rotation direction of the image bearing member with respect to the first developer bearing member, the developing method including developing a latent image formed on the image bearing member with a developer, in which: the developer is a two-component developer having toner and a magnetic carrier; and the developer has a degree of compression C in the range of 20 to 32% and a shearing stress obtained by shearing stress measurement under a consolidation load of 4.0x10-4 N / mm2 in the range of 0.5x10-4 to 2.5x10-4 N / mm2.

Description

technical field [0001] The present invention relates to a developing method for developing an electrostatic latent image formed on an electrostatic latent image carrier such as an electrophotographic photoreceptor or an electrostatic recording susceptor with a two-component developer in an electrophotography method. Background technique [0002] So far, many methods have been known as the electrophotography method, but generally a photoconductive substance is used to form an electrostatic latent image on an electrostatic latent image carrier (photosensitive drum) by various methods, and then the electrostatic latent image is formed by a developer. After the image is developed and developed, if necessary, the toner image is transferred to a transfer material such as paper, and the toner image is fixed on the transfer material by heat, pressure, etc. to obtain a copied article. The developing method in the electrophotography method is mainly divided into a one-component develo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/08G03G13/08G03G15/09
CPCG03G15/0921G03G9/0821G03G15/10G03G2215/0607
Inventor 冈本直树藤川博之石上恒菅原庸好马场善信板仓隆行
Owner CANON KK
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