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Image formation apparatus

An image and photosensitive drum technology, which is applied to corona discharge devices, electrical recording processes using charge patterns, equipment for electrical recording processes applying charge patterns, etc., can solve problems such as time-consuming

Inactive Publication Date: 2006-07-05
KYOCERA DOCUMENT SOLUTIONS INC
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] However, in the image forming apparatus proposed in Japanese Patent Laid-Open Publication No. H11-65222, when the slack of the belt between the photosensitive drums occurs at start-up, since the photosensitive drum and the belt close contact, so the belt tends to remain slack while the image forming apparatus is operating
It takes time to remove the slack in the belt,

Method used

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Experimental program
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Embodiment

[0036] Assuming that amorphous silicon is used as the photoconductor, the intermediate transfer belt 52 is in contact with the photosensitive drum 61, and the contact area is 2.1 cm 2 , at 3.5cm 2 Under the pressure of / kg, the peripheral speed of the photosensitive drum 61 is 50 mm / s, and the speed of the intermediate transfer belt 52 is 100 mm / s. Then, 1 gram of sand with a grain size of 400 was sprinkled on the outer surface of the intermediate transfer belt 52, and the printer 10 was operated for 5 minutes using the intermediate transfer belt 52 having different Young's moduli ranging from 1000 to 2500 MPa, and then , check for scratches on the photoconductor. The results are shown in Table 1.

[0037] Young's modulus (MPa)

[0038] As shown in Table 1, when the transfer belt 52 has a Young's modulus of 2000 MPa or less, the amorphous silicon photoconductor is prevented from being scratched.

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Abstract

In a printer 10 provided with image formation units 60 a to 60 d arranged in tandem so as to be in contact with an intermediate transfer belt 52 that is stretched taut between a driving roller 53 and driven rollers 56 a to 56 c, the intermediate transfer belt 52 moves at speed Vb, the circumference of a photoconductive drum 61 of each of the image formation units 60 a to 60 d moves at speed Vd, and Vb and Vd are so set as to be Vb>Vd. When the printer 10 is activated, after the intermediate transfer belt 52 starts to rotate, the photoconductive drums 61 start to rotate one after the next starting with the one disposed most downstream along the rotation direction of the intermediate transfer belt 52.

Description

technical field [0001] The present invention relates to an image forming apparatus in which image forming units are arranged in series. Background technique [0002] Conventionally, there is known an image forming apparatus for obtaining a color image in which image forming units forming toner images of magenta, cyan, yellow, and black are arranged in series. In such an image forming apparatus, toner images of different colors formed by different image forming units are transferred onto a belt so as to overlap each other, and then collectively transferred from the belt to paper. On the other hand, when the paper is conveyed by the belt, toner images of different colors are directly transferred from the image forming unit to the paper conveyed by the belt so as to overlap each other. In this image forming apparatus, when the belt runs at an indeterminate speed, images from different image forming units cannot accurately overlap each other on the belt. This will cause a colo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/02G03G15/00
CPCG03G15/0178G03G2215/0154G03G15/0194
Inventor 又吉晃
Owner KYOCERA DOCUMENT SOLUTIONS INC
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