image forming device
An image and developing device 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. problem, to achieve the effect of simple precision
Inactive Publication Date: 2018-05-29
KYOCERA DOCUMENT SOLUTIONS INC
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Problems solved by technology
As a result, the frictional resistance between the surface of the carrier and the cleaning blade increases, and the vibration or defect of the cleaning blade easily causes stick-slip and reduces the cleaning ability of the cleaning blade.
As a result, the amount of leakage of toner or additives increases, which becomes the cause of contamination of the charging member or remaining toner or additives that are not removed and adheres to the surface of the image carrier, resulting in a decrease in image quality or failure of image formation.
[0004] Especially when using an image carrier with an amorphous silicon layer formed on the surface as a photosensitive layer, the contact area between the surface of the image carrier and the cleaning blade is small due to the unevenness of the crystal grains generated when the amorphous silicon layer is formed at the beginning of use. , so the friction resistance is also small. After use, the unevenness of the surface of the image carrier is worn and smoothed, resulting in an increase in the friction resistance between the surface of the image carrier and the cleaning blade, which is prone to the above problems
Method used
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Embodiment Construction
[0013] Embodiments of the present invention will be described below with reference to the drawings. figure 1 It is a schematic cross-sectional view showing a schematic configuration of an image forming apparatus according to an embodiment of the present invention. figure 2 yes means figure 1 A diagram showing a schematic configuration of main parts including an image forming processing unit 15 of the image forming apparatus 11 is shown.
[0014] 1. Configuration of Image Forming Apparatus 11
[0015] (the whole frame)
[0016] Such as figure 1 As shown, the image forming apparatus 11 of this embodiment is a tandem color printer. The image forming apparatus 11 is provided with inside the printer main body 12: a paper feeding cassette 13, which houses recording paper (not shown); a paper feeding unit 14, which feeds out recording paper one by one from the paper feeding cassette 13; and an image forming processing unit. 15, image forming process is performed on the recordin...
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An image forming apparatus includes an image carrying member, a driving device, a charging member, a cleaning member, a voltage applying device, a braking distance detector, a storage for storing a predetermined braking distance value Lc, and a control portion. The control portion obtains as Lon the braking distance when the charging voltage is applied to the charging member and obtains as Loff the braking distance when no charging voltage is applied to the charging member. Let the braking distance observed when no charging voltage is applied at an early stage of use of the image carrying member be represented by Loff(0), then, when the relations Loff<Loff(0) and Lc<Loff / Lon hold, the control portion determines that the degree of smoothness of the surface of the image carrying member is equal to or higher than a predetermined degree of smoothness.
Description
technical field [0001] The present invention relates to an image forming apparatus that forms an image on recording paper, and more particularly to a method for judging the surface state of an image carrier on which a toner image is formed. Background technique [0002] As is well known, in image forming apparatuses such as printers, copiers, facsimile machines, or digital composite machines having these functions, a photosensitive drum, an example of an electrophotographic photoreceptor, and a charging member and a cleaning blade are provided. The member is a charging roller or the like for charging the surface of the photosensitive drum, and the cleaning blade is arranged in contact with the surface of the photosensitive drum and removes toner or additives remaining on the surface of the photosensitive drum. [0003] Such a charging member is arranged in contact with or close to the image carrier, and the discharge product generated by the discharge from the charging membe...
Claims
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IPC IPC(8): G03G15/00
CPCG03G15/5033
Inventor 村田贵彦冨家则夫门田雅树高上爱池麻希
Owner KYOCERA DOCUMENT SOLUTIONS INC