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Toner for charged image developing and its preparing method and imaging method, imaging device and toner box

A toner, electrostatic latent image technology, applied in the field of electrostatic image developing toner, can solve the problems of difficult to control particle size, difficult to control aggregation rate, difficult to obtain particle stability and the like

Inactive Publication Date: 2004-09-29
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] In addition, under acidity, dissolved magnetic particle ions exist in the aqueous medium, and in the emulsion aggregation and coagulation method, since the ion balance in the aggregation system is disrupted, it is difficult to control the aggregation rate; in the suspension polymerization system, due to Aggregation is inhibited, so particle size control is especially difficult
In addition, in the solubility suspension granulation method and the solubility emulsion aggregation coagulation method, it is difficult to obtain particle stability when granulating or emulsifying

Method used

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  • Toner for charged image developing and its preparing method and imaging method, imaging device and toner box
  • Toner for charged image developing and its preparing method and imaging method, imaging device and toner box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0363] By adjusting the carrying amount of toner to 4.5g / m 2 , using toner 1, forming an image with a modified laser press 4161 (manufactured by Fuji Xerox Co., Ltd.), and using figure 2The shown high-speed / low-pressure / low-power-type fixing device was fixed at a nip width of 6.5 mm and a fixing speed of 200 mm / sec. The imaging method is an imaging method comprising the steps of: charging step, charging the surface of the image-bearing element; electrostatic latent image forming step, forming an electrostatic latent image corresponding to image information on the surface of the charged image-bearing element; developing step , developing the electrostatic latent image formed on the surface of the image bearing member with a developer containing at least one toner to form a toner image; and a fixing step of fixing the toner image on the surface of the recording medium. In addition, toner 1 was filled into a toner cartridge of a laser press 4161 (manufactured by Fuji Xerox Co.,...

Embodiment 2

[0367] By adjusting the carrying amount of toner to 4.5g / m 2 , using toner 2, forming an image with a modified laser press 4161 (manufactured by Fuji Xerox Co., Ltd.), and using figure 2 The shown high-speed / low-pressure / low-power-type fixing device was fixed at a nip width of 6.5 mm and a fixing speed of 200 mm / sec.

[0368] The obtained image was evaluated, and it was confirmed that the blackness of the image was better, and accurate patterns were obtained. In addition, it was confirmed that toner migration and image blurring were not observed, and good chargeability was exhibited.

[0369] In addition, it was confirmed that the peelability from the fixing device was good, and peeling was performed without any resistance, and no offset occurred. In addition, no image defect was observed after the fixed image was bent into two parts, and stretched again. In addition, when forming an image, toner migration and image blurring were not observed.

Embodiment 3

[0371] By adjusting the carrying amount of toner to 4.5g / m 2 , using toner 3, forming an image with a modified laser press 4161 (manufactured by Fuji Xerox Co., Ltd.), and using figure 2 The shown high-speed / low-pressure / low-power-type fixing device was fixed at a nip width of 6.5 mm and a fixing speed of 200 mm / sec.

[0372] The obtained image was evaluated, and it was confirmed that the blackness of the image was better, and accurate patterns were obtained. In addition, it was confirmed that toner migration and image blurring were not observed, and good chargeability was exhibited.

[0373] In addition, it was confirmed that the peelability from the fixing device was good, and peeling was performed without any resistance, and no offset occurred. In addition, no image defect was observed after the fixed image was bent into two parts, and stretched again. In addition, when forming an image, toner migration and image blurring were not observed.

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Abstract

The toner for electrostatic charged image development of the present invention is characterized in that it contains at least a binder resin, a mold releasing agent and magnetic metal particles, and the solubility of the magnetic metal particles in a 1 mol / l aqueous HNO3 solution at 50 DEG C. is 500 mg / g.l or less.

Description

technical field [0001] The present invention relates to a toner for developing an electrostatically charged image, which is used when developing an electrostatic latent image formed by electrophotography or electrophotographic printing, etc. like devices and toner cartridges. Background technique [0002] A method of visualizing image information through an electrostatically charged image is currently utilized in various fields such as electrophotography. In electrophotography, an electrostatically charged image is formed on a photosensitive body through a charging step and an exposure step, developing an electrostatic latent image with a toner-containing developer, and a transfer step and a fixing step, thereby making the image information developing. [0003] Known developers include a two-component developer consisting of a toner and a carrier, and a one-component developer consisting of a magnetic toner or a non-magnetic toner alone. The method for preparing the toner...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/08G03G9/083G03G9/087
CPCG03G9/0836G03G9/0839G03G9/08782G03G9/08795G03G9/08797G03G9/0832G03G9/08755G03G9/0834
Inventor 石山孝雄中沢博佐藤修二鹤见洋介有马康浩今井孝史
Owner FUJIFILM BUSINESS INNOVATION CORP
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