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Toner, two-component developer, developing device, fixing device, and image forming apparatus

A toner image and toner technology, applied in the direction of developer, electric recording process using charge pattern, equipment for electric recording process using charge pattern, etc., can solve the problems of complex device configuration and high cost, and achieve Improvement of light absorption efficiency, securing of fixability, and improvement of light absorption efficiency

Inactive Publication Date: 2010-06-23
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since two units of strobe lamp fixing and laser fixing are required as the fixing mechanism, there are also problems that the configuration of the device becomes complicated and the cost increases.

Method used

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  • Toner, two-component developer, developing device, fixing device, and image forming apparatus
  • Toner, two-component developer, developing device, fixing device, and image forming apparatus
  • Toner, two-component developer, developing device, fixing device, and image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0155] (1) Manufacture of core resin

[0156] 87.5 parts of styrene acrylic resin (refractive index 1.56 adhesive resin, glass transition temperature Tg: 55°C, softening temperature Tm: 110°C) as a binder resin, a colorant (trade name: KET·BLUE111, DIC Corporation 8 parts), 3 parts of polyester wax (melting point 85°C) as a release agent, and 1.5 parts of a charge control agent (product: BONTRON E84, manufactured by Orient Chemical Industry Co., Ltd.) using a mixer (trade name: Henschel Mixer, manufactured by Mitsui Mining Co., Ltd.). Using a twin-screw extruder (trade name: PCM-30, manufactured by Ikegai Co., Ltd.), the obtained mixture was melt-kneaded at a cylinder temperature of 145° C. and a drum rotation speed of 300 rpm to prepare a melt-kneaded product. After cooling the melt-kneaded product to room temperature, it was coarsely pulverized with a cutting mill (trade name: VM-16, manufactured by Seishin Co., Ltd.) to prepare a coarse powder having a particle diameter of...

Embodiment 2

[0170] The two-component developer of Example 2 was obtained in the same manner as in Example 1, except that the core particle resin was PMMA (refractive index: 1.49) and the shell layer resin was silicone resin (refractive index: 1.41).

Embodiment 3

[0172] The two-component developer of Example 3 was obtained in the same manner as in Example 1, except that the core particle resin was polyester (refractive index: 1.57) and the shell layer resin was PMMA fine particles (refractive index: 1.49).

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PUM

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Abstract

The present invention realizes: a toner that ensures fixing property only by a laser fixing system where a toner is fixed by irradiation of laser light whose wavelength is adjusted to be in an absorption wavelength range of each color of the toner, and realizes an image without poor color reproducibility caused by an infrared absorbent; a two-component developer containing the toner; a developing device; a fixing device; and an image forming apparatus. A capsule toner, which is the toner of the present invention, is arranged such that the capsule toner has a two-layer structure where a coating layer is formed around a surface of a core particle serving as a toner matrix particle, and nb / na is in a range of 0.92 to 0.96 where nb / na is a ratio of a refractive index of a resin making up the coating layer (nb) to a refractive index of a resin making up the core particle (na).

Description

technical field [0001] The present invention relates to a toner, a two-component developer, a developing device, a fixing device, and an image forming device. Specifically, it relates to a toner used in a fixing device, a two-component developer using the toner, a developing device, a fixing device, and an image forming device in which the The unfixed toner image is irradiated with laser light having a wavelength within the absorption wavelength range of the toner color, and the energy of the light melts the toner constituting the toner image and fixes it on the transfer material. Background technique [0002] The electrophotography method is a method of forming an electrostatic latent image on a photosensitive drum by using a photoconductive phenomenon, developing the electrostatic latent image with a toner to form a toner image (visible image), and converting the toner image to a toner image. Printing and fixing onto recording paper. Various fixing devices using heat, pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/093G03G9/10G03G15/20G03G9/087G03G9/09G03G9/097G03G9/107
CPCG03G9/09314G03G9/093G03G2215/0607G03G9/09385G03G9/09364G03G9/09307G03G9/0825G03G9/081G03G9/09378G03G15/201
Inventor 久保雅彦
Owner SHARP KK
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