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Image forming apparatus

An image and equipment technology, applied in the field of image forming equipment, can solve problems such as sensor pollution

Active Publication Date: 2016-04-06
HEWLETT PACKARD DEV CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The sensing unit includes a sensor formed as a photo sensor, and as described above, since the sensing unit is disposed adjacent to the transfer member, developer inevitably accumulates on the sensor, thereby contaminating the sensor.

Method used

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Examples

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Embodiment Construction

[0074] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

[0075] figure 1 is a sectional view of the image forming apparatus according to the first embodiment of the present invention.

[0076] Such as figure 1 As shown in , an image forming apparatus according to an embodiment of the present invention includes: a main body 10 forming the appearance of the image forming apparatus; a printing medium storage unit 20 in which printing medium is stored; a plurality of developing units 30C, 30M, 30Y, and 30K , develop the electrostatic latent image into a visible image according to the color by the developer; the exposure unit 40 forms the electrostatic latent image by projecting light onto the photoreceptors 31 of the charged developing units 30C, 30M, 30Y, and 30K; transfer means 50, for transferring the visible image formed in ...

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PUM

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Abstract

An image forming apparatus is disclosed here. An image forming apparatus of the present invention comprises: a sensing unit having a light window and a sensor for sensing developer through the light window; and a shutter device for opening and closing the light window, thereby being capable of maintaining the sensible state of the sensing unit and extending the lifespan thereof.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2014-0129204 filed with the Korean Intellectual Property Office on September 26, 2014, the disclosure of which is hereby incorporated by reference. technical field [0002] Embodiments of the present invention relate to an image forming apparatus, and more particularly, to an image forming apparatus having a structure that improves sensing efficiency inside the image forming apparatus. Background technique [0003] An image forming apparatus is an apparatus for forming an image on a printing medium according to an input signal, and examples thereof include a printer, a copier, a facsimile, and an all-in-one apparatus realized by a combination thereof. [0004] An electrophotographic image forming apparatus as one type of image forming apparatus includes: a main body; a plurality of developing units in which an electrostatic latent image is developed into a visible image by a developer of each color...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/16G03G21/16
CPCG03G15/1605G03G21/168G03G15/00G03G21/00G03G2215/00059G03G15/5054
Inventor 宋圣源尹永珉
Owner HEWLETT PACKARD DEV CO LP