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Image forming method

An image, electrostatic latent image technology, applied in the field of image formation, can solve problems such as adhesion, component heating, and increased component heating.

Inactive Publication Date: 2009-06-24
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the above-mentioned method often causes a problem of heat generation due to the friction between the thin layer forming member and the developing roller.
In addition, in order to achieve further miniaturization, although the reduction in diameter of the developing roller is effective, the degree of heat generation of the accompanying parts increases, and the problem of sticking often occurs.

Method used

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Embodiment Construction

[0033] The present invention is described in detail below

[0034] If the amount of exposed wax on the surface of the toner A (mg / g) becomes R 2 When / 12 or less, the amount of wax exudation on the surface of the toner due to heat generation of the member is reduced, thereby suppressing the occurrence of sticking to the thin layer forming member. In addition, if it is 150 / v or more, the release property during fixing can be maintained, and if the linear velocity v is 300 mm or less, the amount of heat generation is controlled so that sticking does not occur. The amount of wax added is 3%-10%, and a good image can be obtained. If the amount of wax added is more than 3%, the releasability during fixing is maintained; if the amount of wax added is less than 10%, when a thin layer is formed, cracking of the toner starting from the wax will not occur, and adhesion will not occur. Neither happens.

[0035] If the endothermic curve of the above-mentioned toner obtained by differen...

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Abstract

The invention relates to an image forming method, capable of achieving the good image without adherence on a developing roller with diameter R(mm) of 10>=R>=5 even with linear speed above 100mm / sec. The image forming method in the invention at least comprises: feeding the toner with the developing roller to the electrostatic latent image to develop the electrostatic latent image, and developing; and forming the toner on the developing roller into a thin layer by a thin-layer forming member connected with the circumferential surface of the developing roller. which is characterized in that: the toner is a pulverized toner including at least binder resin; wax; and inorganic particulate material; and the following relationships (1) to (3) are satisfied, wherein a represents a peripheral speed of the developing roller; R represents a diameter of the developing roller; and A represents an exposure of the wax on the surface of the toner. (1): 300>=a>=100; (2): 10>=R>=5; (3): (<R>2 / 12)>=A>=(150 / v).

Description

technical field [0001] The present invention relates to an image forming method for oil-free fixing using a non-magnetic one-component developing toner, a toner, and an image forming apparatus. Background technique [0002] Patent Document 1 (Patent No. 3919541) describes a method that prevents image blurring caused by temperature rise, improves image whitening and does not produce longitudinal ribs and conjunctiva after long-term use, and does not produce image blurring in high-temperature and high-humidity environments. Poor contact with one-component toner and process cartridges for one-component development. The process cartridge includes a latent image carrier with a diameter of 33 mm or less, a toner carrier with a diameter of 20 mm or less disposed in contact with the latent image carrier by the developing container, and a toner disposed in contact with the toner carrier. The supply roller is a toner conveying means for conveying the toner toward the toner supply rol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G13/08G03G9/08G03G21/18
CPCG03G15/0896G03G9/0819G03G9/09708G03G9/09725G03G9/08782G03G9/08797
Inventor 不破一兴藤木仁内藤裕大久保泰秀村山伸
Owner RICOH KK