Image processing method, image processing apparatus, image forming apparatus, image forming system, and storage medium

一种图像、记录介质的技术，应用在图像处理、图像处理装置、图像形成装置、图像形成系统以及存储介质领域，能够解决副作用、渗色、降低图像的边缘部分质量等问题

Active Publication Date: 2011-06-01
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the degree of penetration of the ink into the recording medium varies depending on the absorption characteristics of the ink and the recording medium, use of ink droplets having such a large droplet size (or a large amount of ink) may cause bleeding in some cases. And reduce the quality of the edge part (or color boundary) of the image, and may also affect the color rendering
[0029] This kind of problem caused by excess ink is a side effect of the correction process being performed to cover the white streaks (secondary problem)
Therefore, the above related art method using multi-level error diffusion processing may cause this side effect

Method used

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  • Image processing method, image processing apparatus, image forming apparatus, image forming system, and storage medium
  • Image processing method, image processing apparatus, image forming apparatus, image forming system, and storage medium
  • Image processing method, image processing apparatus, image forming apparatus, image forming system, and storage medium

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Embodiment Construction

[0063] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Below, refer to Figures 1 to 4 An inkjet recording apparatus serving as an example of an image forming apparatus according to an embodiment of the present invention is described. figure 1 is a schematic diagram of the mechanical components of the inkjet recording device; figure 2 is the plan view of the mechanical part; image 3 is a perspective view of a recording head unit of an inkjet recording apparatus; Figure 4 is a schematic diagram of the conveyor belt of the inkjet recording apparatus.

[0064] The inkjet recording apparatus includes a main unit 1 having an image forming unit 2 and a paper feed tray 4 provided below the main unit 1 and capable of accommodating a plurality of recording media 3 (hereinafter referred to as paper 3 ). Paper 3 is fed from paper feed tray 4 to transport mechanism 5 . The image forming unit 2 forms an ima...

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Abstract

The present invention provides an image processing method including a conversion step of converting multilevel data of an image into a dot pattern using a multilevel error diffusion process. The conversion step includes the steps of determining a pixel corresponding to an abnormal nozzle based on abnormal nozzle information provided for each of droplet sizes supported by nozzles of an image forming apparatus; preventing jetting of a droplet onto the determined pixel; distributing a quantization error of the determined pixel calculated in the multilevel error diffusion process to neighboring pixels; and if extra- large droplets with a droplet size greater than the droplet size of a full-size droplet capable of filling a pixel are to be formed in the neighboring pixels as a result of distributing the quantization error, removing one or more of the extra-large droplets or reducing the droplet size of one or more of the extra-large droplets.

Description

technical field [0001] Some aspects of the present invention relate to an image processing method, an image processing device, an image forming device, an image forming system, and a storage medium. Background technique [0002] A liquid jet image forming apparatus, such as an inkjet recording apparatus, forms an image using one or more recording heads for ejecting ink droplets. The liquid jet image forming apparatus is used in, for example, a printer, a facsimile machine, a copier, a plotter, or a multifunction copier having these functions. Such a liquid jet image forming apparatus ejects ink droplets from its recording head onto paper, thereby forming (recording or printing) an image on paper. There are roughly two types of liquid jet image forming apparatuses: a string type image forming apparatus including a recording head that ejects ink droplets to form an image while moving in the main scanning direction; a line type image forming apparatus including a recording hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41J2/205
CPCB41J2/2132B41J2/2139H04N1/409H04N1/4052H04N1/40087B41J2/16579
Inventor 平野政德
Owner RICOH KK
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