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Color image forming method

A color image and toner image technology, applied in the field of color image formation, can solve problems such as image defects, copy loss, and poor copy, and achieve the effects of suppressing white spots, suppressing deterioration, and suppressing back-end loss

Inactive Publication Date: 2005-08-31
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, poor replication occurs in the periphery of the carrier, and replication loss occurs
When copying is lost, it will become white spots for monochrome images, and when multi-layer development and multi-layer copying are performed, color spots (hereinafter referred to as white spots) will occur, causing image defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7、 comparative example 1～2

[0180] As described in Table 1, the carrier, toner, and developer carrier were used in a modified Acolor 635 manufactured by Fuji Xerox (the diameter of the latent image holder is 48 mm), and the image quality was tested and evaluated.

[0181] The modification is to change the fixing roller into a PFA tube-based silicone roller, and remove the fixing oil supply machine. Furthermore, modify the imaging machine so that the stainless steel tube can be rotated to fix the internal magnet, and adjust the components that limit the amount of magnetic brush, so that when the developer is added, the delivery amount of the developer can reach 400±50g / m 2 . In addition, the distance between the latent image holder and the developer carrier was adjusted to 0.4mm, the contrast potential was adjusted to -250V, the alternating electric field of the bias voltage was adjusted to 1.6kvpp, the frequency was adjusted to 6500Hz, and the duty of the bias voltage was adjusted to 55 %, while setting...

Embodiment 8～14、 comparative example 3～4

[0186] As shown in Table 2, the carrier, the toner, and the latent image holder were used in a modified Acolor 635 (diameter of the developer carrier: 30 mm) manufactured by Fuji Xerox Co., Ltd. to conduct a test to evaluate the image quality.

[0187] The modification is to change the fixing roller into a PFA tube-based silicone roller, and remove the fixing oil supply machine. Furthermore, it is also possible to attach a latent image holder having a different diameter by modifying the attachment portion of the latent image holder. At this time, the distance between the latent image holder and the developer carrier and the angle of the developing machine were not affected by the diameter of the latent image holder. The magnetic brush density of the developer on the carrier of the developer is adjusted to 40mg / cm 2 , the distance between the latent image holder and the developer carrier was adjusted to 0.4mm, the contrast potential was adjusted to -300V, the alternating elect...

Embodiment 15

[0192] As shown in Table 3, using the carrier, toner, developer carrier, and latent image holder, the same test as in Example 1 was performed to evaluate the image quality, and the results are shown in Table 3.

[0193]

carrier

toner

imaging agent

Carrier

latent image

Holder

imaging agent

resistance

(2V / μm)

Carrier resistance

(1V / μm)

Carrier resistance

(2V / μm)

after full image

end lost

White

spots

ΔID

Example

15

Carrier 1

Toner 1

imaging agent

Carrier 1

latent image preservation

Holder 1

10 15.1 Ω

10 15.5 Ω

10 11.1 Ω

◎

◎

1.3

[0194] In Example 15, no loss of the rear end of the full image or white spots can be seen at all, and it is a very excellent image. In addition, the layering is also v...

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PUM

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Abstract

The present provides a method for imaging, capable of restraining defects of back end deletions and other deletions, good and uniform developability in the image region is maintained, and stably outputting high-quality images with no image density unevenness are output for a long period of time. Two-component developer is supplied onto a developer support disposed to face the latent image support to form a thin layer of two-component developer for contacting the thin layer with the upper of the latent image support, the latent image imported onto the latent image support is developed and imaging method of toner image developing process is formed.

Description

technical field [0001] The present invention relates to an image forming method using an electroprinting method and an electrostatic recording method. More specifically, it relates to a color image forming method for printers, copiers, facsimiles, etc., which output color images, especially full-color images, using a two-component developer composed of a color toner and a carrier. Background technique [0002] Conventionally, in the electroprinting method, methods for displaying a latent image formed on a latent image holder mainly include a one-component developing method and a two-component developing method. The above-mentioned one-component developing method is a method in which a thin-layer toner carried on a developer carrier is opposed to a latent image holder, and then the toner is developed. The above-mentioned two-component developing method is to carry the developing agent composed of toner and magnetic carrier on the developing agent carrier containing the magne...

Claims

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Application Information

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IPC IPC(8): G03G21/00G03G9/08G03G13/01G03G15/00G03G15/08
CPCG03G2215/0609G03G13/013G03G9/0823G03G15/00
Inventor 田口哲也饭塚章洋吉原宏太郎吉野进石田晴英片冈理惠子
Owner FUJIFILM BUSINESS INNOVATION CORP