Image forming apparatus and image forming method
An image and latent image technology, which can be applied to corona discharge devices, electrical recording processes using charge patterns, and equipment using electrical recording processes using charge patterns, etc., can solve the deterioration of charging uniformity, image quality and charging performance. and other problems to achieve the effect of maintaining the uniformity of charging
Inactive Publication Date: 2010-09-29
SEIKO EPSON CORP
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Problems solved by technology
Due to the influence of such a charging bias or load, discharge products, toners, lubricants, and other deposits accumulate on the tip of the cleaning blade at the portion that contacts the surface of the latent image carrier, resulting in uniformity of charging. deterioration
In this way, if the cleaning blade (corresponding to the "conductive blade" of the present invention) having both charging function and cleaning function is very durable, the charging performance will be deteriorated and the image quality will be lowered.
Method used
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[0031] figure 1 It is a diagram schematically showing the main configuration of the first embodiment of the image forming apparatus according to the present invention. and figure 2 yes means figure 1 A block diagram of the electrical configuration of the device. In this image forming apparatus 1 , an image is formed using a nonmagnetic single-component negatively charged toner. That is, in the first embodiment, the negative polarity is "regularly charged polarity". Of course, it is also possible to form an image using a positively charged toner whose positive polarity is the normal charging polarity. In the following description, the case where negatively charged toner is used in the image forming apparatus 1 will be described. However, in the case of using positively charged toner, the charging potentials of the components described below should be set to opposite polarities. That's it. In addition, although the toner has toner base particles and additives added to the...
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The present invention relates to an image forming apparatus and an image forming method for maintaining electrification uniformity for a long time by fewer components when performing electrification processing and cleaning processing on a surface of a latent image carrier and a lubricant performs coating processing to the surface of the latent image carrier. Because at least one of a conductive blade (4) and a coating brush roller (31) is applied with once electrification bias (Vcg1) to perform once electrification processing, the once electrification processing is performed by fewer components. If the surface of a photoreceptor (2) is performed with the once electrification processing by the conductive blade (4), because achieving to the durability of the conductive blade (4), the electrification uniformity is deteriorated; but before this, the once electrification processing by using the conductive blade (4) is switched to the once electrification processing by using the coating brush roller (31), the electrification uniformity is maintained for a long time.
Description
technical field [0001] The present invention relates to an image forming apparatus and an image forming method for forming a toner image by developing an electrostatic latent image formed on the surface of a latent image carrier with toner, and in particular to cleaning and cleaning of the surface of a latent image carrier. charged. Background technique [0002] There is known a toner image formed by developing an electrostatic latent image formed on a latent image carrier rotating in a predetermined rotation direction with toner, and then transferring the toner image to a transfer body. An image forming apparatus and method for printing media. In this image forming apparatus and method, since the transfer efficiency from the latent image carrier to the transfer medium is 100% or less, a small amount of toner may remain on the surface of the latent image carrier after transfer. In view of this, in such an image forming apparatus, a cleaning position downstream of the trans...
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IPC IPC(8): G03G15/02
CPCG03G15/0291G03G21/0017G03G21/0035G03G15/0233G03G21/0023G03G2221/1609G03G15/22
Inventor 前田将宏山田阳一小桥胜有贺友洋福元贵智北泽淳宪
Owner SEIKO EPSON CORP