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Led array exposing apparatus and image forming apparatus using the same

An exposure device and array technology, which are applied in the electrical recording process applying charge pattern, the equipment and optics of the electrical recording process applying charge pattern, can solve the problem of photoreceptor sensitivity compensation light intensity and the like, and achieve effective light intensity compensation, The effect of light intensity compensation to stabilize and stabilize temperature data

Inactive Publication Date: 2006-08-16
KYOCERA DOCUMENT SOLUTIONS INC
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  • Description
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Problems solved by technology

Therefore, JP8-39860A (1996) and JP8-183202 (1996) cannot compensate for light intensity corresponding to changes in photoreceptor sensitivity with temperature

Method used

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  • Led array exposing apparatus and image forming apparatus using the same
  • Led array exposing apparatus and image forming apparatus using the same
  • Led array exposing apparatus and image forming apparatus using the same

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Embodiment Construction

[0033] Preferred embodiments will be described below with reference to the accompanying drawings. It should be understood that the invention is not limited to the dimensions, shapes and relative arrangements of elements specifically described.

[0034] First, the structure of the imaging device of the present invention will be explained.

[0035] FIG. 1 is a schematic diagram of the imaging device of this embodiment.

[0036]The image forming apparatus (an exemplary color printer 1) includes a main body 2; image forming units 3B, 3Y, 3C, and 3M for black, yellow, cyan, and magenta, respectively; toner hoppers 10B, 10Y, 10C, and 10M; paper cassette 12 ; paper feed guide 13 , drive rollers 11 a and 11 b for conveyor belt 8 ; transfer roller 9 ; fixing unit 17 ; paper outlet guide 15 ; Here, each image forming unit 3B, 3Y, 3C, and 3M includes a developing unit 4 , a photoreceptor 5 , a main charging unit 6 , an LED array exposing unit 7 , and a cleaning unit 20 .

[0037] A te...

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Abstract

Provided are an LED-array exposing apparatus and image forming apparatus using the same wherein one or more LED-array chips which mount LEDs corresponding to pixels are employed. LED light intensities are compensated, taking into consideration distance variations between the LED-array chips, a photoreceptor sensitivity and a development bias voltage, thereby reducing an image density variation and black or white longitudinal lines along the photoreceptor rotation direction. The compensation circuit receives image signals and photoreceptor sensitivity, and compensates the light intensities, on the basis of prescribed ligh intensity compensation values and the LED-array chip distances. The compensated image signals together with timing clocks are sent to the LED-array exposing apparatus.

Description

technical field [0001] The present invention relates to an LED (Light Emitting Diode) array exposure device and an imaging device using the device, wherein even if the LED array deviates from the pixel arrangement, or even if the sensitivity (sensitivity) of the photoreceptor itself is different, or the sensitivity of the photoreceptor varies with temperature And change, can make the density of electrophotographic copy as uniform as possible. Background technique [0002] For copiers, printers, and facsimiles, there are two types of image forming systems, namely, direct image forming systems and indirect image forming systems. In a direct imaging system, an image is formed directly on paper, where the image is transferred once on an intermediate transfer medium such as a photoreceptor, and finally transferred to paper. In addition to home use, indirect image forming systems using plain paper are widely used. [0003] Although analog image forming processing is employed for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/04H01L33/00B41J2/44B41J2/45B41J2/455
CPCG03G2215/0409G03G15/326B41J2/451G03G15/04054
Inventor 大庭忠志
Owner KYOCERA DOCUMENT SOLUTIONS INC
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