Developing device and image forming device
A technology of developing device and developing roller, which is applied in the direction of electric recording process using charge pattern, equipment and instruments of electric recording process using charge pattern, and can solve the problems such as insufficient function
Inactive Publication Date: 2018-10-19
KYOCERA DOCUMENT SOLUTIONS INC
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[0003] However, since this developing device A is configured such that each seal member is provided with one groove portion having a shape extending in the rotational direction of the peripheral surface of the developing sleeve, the toner on the peripheral surface of the developing sleeve is suppressed from moving toward the rotational axis. The effect of the movement at the end of the direction is not sufficient, and needs to be improved
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[0027] Hereinafter, a developing device and an image forming apparatus including the developing device according to an embodiment of the present invention will be described with reference to the drawings. figure 1 It is a front cross-sectional view showing the structure of an image forming apparatus including a developing device according to an embodiment of the present invention.
[0028] An image forming apparatus 1 according to an embodiment of the present invention is, for example, a multifunction peripheral having multiple functions of a copy function, a print function, a scan function, and a facsimile function. The image forming apparatus 1 is configured to include an operation unit 47 , an image forming unit 12 , a fixing unit 13 , a paper feeding unit 14 , a document supply unit 6 , a document reading unit 5 , and the like in an apparatus main body 11 .
[0029] When image forming apparatus 1 performs a document reading operation, document reading unit 5 optically read...
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The invention provides a developing device and an image forming device. The developing device includes a developing roller, a regulating blade, and a sealing member. The regulating blade extends in the direction of the rotational axis of the developing sleeve, is disposed facing the peripheral surface of the developing sleeve, and regulates the amount of toner on the peripheral surface of the developing sleeve. The seal member is disposed on both ends of the developing sleeve in the direction of the rotational axis of the developing area on the peripheral surface of the developing sleeve in a non-contact manner, and faces the peripheral surface, and suppresses toner movement on the developing area by the magnetic brush formed between it and the magnetic roller. to the end in the direction of the above-mentioned rotation axis. On the inner side surface of the seal member facing the peripheral surface of the developing sleeve, there is formed a groove extending in the direction of the rotational axis of the developing sleeve and having a convex portion formed in a zigzag shape in a side view in the direction of the rotational axis. Thereby, the toner on the peripheral surface of the developing sleeve can be more reliably suppressed from moving to the end portion of the developing sleeve in the direction of the rotational axis, and toner leakage can be prevented.
Description
technical field [0001] The present invention relates to a developing device for forming a toner image by supplying toner to an electrostatic latent image electrophotographically formed on the peripheral surface of a photoreceptor drum, and an image forming apparatus including the developing device. It relates to a technology for preventing the leakage of toner on the peripheral surface of a developing sleeve. Background technique [0002] In an electrophotographic image forming apparatus, toner is supplied from a developing device to an electrostatic latent image formed on a surface of a photoreceptor drum to form a toner image. The developing device has a developing roller composed of a magnetic roller and a developing sleeve on which a toner layer is formed on the peripheral surface, and the toner is supplied from the developing sleeve to the surface of the photoreceptor drum. The two ends of the developing sleeve in the direction of the rotational axis of this developing...
Claims
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IPC IPC(8): G03G15/08
CPCG03G15/0898G03G15/0817G03G15/0942G03G15/0812
Inventor 山崎浩
Owner KYOCERA DOCUMENT SOLUTIONS INC