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image forming device

An image and image carrier technology, which is applied in the direction of electric recording process applying charge pattern, equipment of electric recording process applying charge pattern, electric recording technique, etc., can solve the problem of transfer current leakage, etc. Effect

Active Publication Date: 2018-05-15
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the case of paper containing water in a high-humidity environment, the transfer current may leak through the paper to the paper conveying section around the photosensitive drum

Method used

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Embodiment Construction

[0015] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, in the drawings, the same reference numerals are attached to the same or corresponding parts, and the description thereof will not be repeated.

[0016] figure 1 It is a block diagram of an example of the image forming apparatus which concerns on embodiment.

[0017] For example, the image forming apparatus 100 is a Multi Function Peripheral (MFP). The image forming apparatus 100 has various functions of a scanner, a copier, a printer, and a facsimile machine (FAX). The image forming apparatus 100 includes an image forming unit 1 , an image reading unit 2 , a document feeding device 3 , and an operation panel 4 . The image forming unit 1 forms an image on paper P, which is an example of a recording medium. The image reading unit 2 reads the image of the original document. The original conveying device 3 conveys an original to be read. The o...

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PUM

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Abstract

The invention provides an image forming device. The image forming apparatus includes an image carrier, a transfer unit, a transfer bias application unit, a conveyance unit, an element, a current measurement unit, and a control unit. The transfer portion and the image carrier together form a pressing portion that presses the recording medium. The transfer unit transfers the toner image on the image carrier to the recording medium passing through the pressing unit. The transfer bias application unit applies a transfer bias to the transfer unit by supplying a transfer current to the transfer unit. The transport unit transports the recording medium along a transport direction toward the pressing unit. The element is turned on when a voltage higher than a predetermined value is applied. The current measurement unit measures the value of the leakage current flowing through the element. The control unit controls the value of the transfer current. The control unit changes the absolute value of the transfer current based on the absolute value of the leakage current.

Description

technical field [0001] The present invention relates to an image forming apparatus. Background technique [0002] An electrophotographic image forming apparatus is known. In general, an electrophotographic image forming apparatus forms an image on paper by performing various steps such as charging, exposure, development, and transfer. [0003] Specifically, first, in the charging step, the outer peripheral surface (hereinafter, referred to as "image bearing surface") of the photosensitive drum serving as the image bearing body is uniformly charged to a predetermined potential of the first polarity (eg, positive electrode). Next, in the exposure step, the image bearing surface is exposed to light, and an electrostatic latent image is formed on the image bearing surface. Then, in the developing step, the electrostatic latent image on the image bearing surface is developed using the charged toner. Thereby, a toner image is formed on the image bearing surface. In addition, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/16G03G15/00
CPCG03G15/1675G03G2215/00776
Inventor 大仓朋久
Owner KYOCERA DOCUMENT SOLUTIONS INC