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Image forming apparatus and image forming method

An image and equipment technology, applied in image forming equipment and image forming field, can solve the problem of increasing the cost of image forming equipment

Inactive Publication Date: 2007-12-19
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the capacity of the memory for temporarily storing the printing color signals in various digital processes is also rapidly increasing, which has become a factor of increasing the cost of the image forming apparatus

Method used

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  • Image forming apparatus and image forming method
  • Image forming apparatus and image forming method
  • Image forming apparatus and image forming method

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Experimental program
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Embodiment Construction

[0024] Embodiments of an image forming apparatus and an image forming method of the present invention will be described below with reference to the drawings.

[0025] (1) Structure of image forming apparatus

[0026] FIG. 1 is a diagram showing a structural example of a tandem image forming apparatus 1 of an embodiment of the present invention. As shown in FIG. 1 , an image forming apparatus 1 includes a scanner unit 2 , an image forming unit 3 , and a paper feeding unit 4 .

[0027] The scanner unit 2 irradiates light to a document placed on a document table, guides reflected light from the document to a light receiving element through a plurality of optical members, performs photoelectric conversion, and supplies an image signal to the image forming unit 3 .

[0028] The image forming unit 3 is provided with four process cartridges 11a, 11b, 11c, and 11d. The process cartridges 11a, 11b, 11c, and 11d correspond to yellow (Y), magenta (M), cyan (C), and black (K), and inclu...

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Abstract

An image forming apparatus of the invention is a tandem type image forming apparatus for forming a color image and includes a bit-length converting unit configured to convert a plurality of first image data having a first bit length and provided for respective print colors into a plurality of second image data having a second bit length smaller than the first bit length in at least one of the print colors, a plurality of storage units configured to temporarily store the second image data for the respective print colors and to be capable of setting delay amounts different for the respective print colors to the second image data, a plurality of photoreceptors provided for the respective print colors and arranged at specified intervals. According to the invention, the quality of an image is kept at a specific level, and the capacity of a memory for delay adjustment of an image forming signal to each photoreceptor can be reduced.

Description

technical field [0001] The present invention relates to an image forming apparatus and an image forming method, and in particular, to an image forming apparatus and an image forming method capable of performing color printing. Background technique [0002] In an image forming apparatus such as a color copier or a color printer, various printing colors such as cyan (C), magenta (M), yellow (Y), and black (K) are used, and are printed on recording sheets, etc. Print a color image on it. [0003] In order to maintain a high level of grayscale reproducibility and color reproducibility, it is necessary to make an image signal corresponding to each printing color (hereinafter referred to as a printing color signal) multi-bit (bit) multi-grayscale data, for example, 8bit 256 gray order signal. [0004] On the other hand, recently, the resolution of image data has increased rapidly, requiring image forming apparatuses to process a large number of pixel signals. Therefore, the cap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/01G03G15/00G03G21/14
CPCH04N1/40031H04N1/32358H04N1/506H04N2201/3287G03G2215/0132
Inventor 本田雅士
Owner KK TOSHIBA