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Image forming apparatus

An image and image signal technology, applied in the field of image forming devices, can solve problems such as cost increase

Inactive Publication Date: 2014-08-06
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to correct such non-linear step-like deviations and deviations for each color, it is necessary to prepare an expensive drive circuit, which increases the cost.

Method used

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Examples

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Embodiment Construction

[0021] Embodiments will be described below with reference to the drawings.

[0022] figure 1 The illustrated image forming apparatus (MFP (multi-function peripherals), hereinafter simply referred to as MFP) 1 includes at least an image forming unit 3 , an image reading unit 5 , and a signal processing / operation control unit (circuit board unit) 7. In addition, an operation unit (display panel) 9 is located at a predetermined position of the MFP 1 .

[0023] The image forming unit 3 forms a visible image corresponding to the image data on a sheet such as paper or a resin sheet. The image data may be, for example, data generated by the image reading unit 5 or external data. The data from the outside may be data supplied from a storage (removable) medium such as a semiconductor memory, or may be a supply source on the network via the interface 71 (refer to image 3 ) supplied data.

[0024] The image reading unit 5 acquires characters and images of the object to be read as b...

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Abstract

The invention provides an image forming apparatus which enables timing optimization of latent image formation of an LED head according to an image including a chart and grids or the color of the image. A first exposure unit exposure unit includes a given number of light-emitting elements which are linearly arranged, and changes a light emission amount of each light-emitting element in response to an image signal corresponding to a first color which can hardly be recognized in the change of the straight line state. A first image carrier holds an image corresponding to the light emission amount of each light-emitting element of the first exposure unit. A second exposure unit includes a given number of light-emitting elements which are linearly arranged, and changes the light emission amount of each light-emitting element in response to an image signal corresponding to a second color which can be easily recognized in the change of the straight line state. A second image carrier holds an image corresponding to the light emission amount of each light-emitting element of the second exposure unit. An exposure signal generation unit excludes a correction during exposure for reducing the influence of the change of the straight line state of each light-emitting element at the time when the second exposure unit emits the light.

Description

technical field [0001] The present invention relates to an image forming apparatus. Background technique [0002] In an image forming apparatus that forms an image on a sheet, a method of visualizing a latent image formed by irradiating a photoreceptor with image light with a developing material (developer) is generally employed. [0003] There is an image forming apparatus that uses an LED (Liquid Emitting Diode: Light Emitting Diode) head as a device for irradiating image light to a photoreceptor. [0004] In an image forming apparatus using an LED head, a predetermined number of LED elements corresponding to a resolution are arranged linearly to form a linear image extending in the main scanning direction. In the sub-scanning direction perpendicular to the main-scanning direction, linear images extending in the main-scanning direction are sequentially formed at intervals determined according to the resolution. That is, an output image determined by the number of pixels ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/043
CPCG03G15/04054G03G15/043
Inventor 市川正树
Owner KK TOSHIBA
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