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Image processing method, image processing program, and image forming apparatus

An image processing and image technology, applied in the direction of processing output data, permanent visual display devices, instruments, etc., can solve the problems of increased processing time, printing time, complicated smoothing, and increased cost, and achieve high printing speed and high image quality. Effect

Inactive Publication Date: 2007-07-04
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in Patent Documents 1 to 6, there is no description of the case where the resolution is different between the main scanning direction and the sub scanning direction
Thus, in the conventional technique, the smoothing process is complicated due to high precision in one direction, the cost of installing an additional memory increases, and the printing time increases due to an increase in processing time

Method used

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  • Image processing method, image processing program, and image forming apparatus
  • Image processing method, image processing program, and image forming apparatus
  • Image processing method, image processing program, and image forming apparatus

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Embodiment Construction

[0087] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Embodiments of the present invention are explained by using an inkjet recording apparatus as an image forming apparatus. FIG. 1 is a schematic diagram of part of an inkjet recording apparatus capable of forming multi-level dots according to an embodiment of the present invention. FIG. 2 is a plan view of part of the inkjet recording apparatus shown in FIG. 1 . Referring to FIGS. 1 and 2 , structural components of an inkjet recording apparatus according to an embodiment of the present invention are explained.

[0088] In the inkjet recording apparatus, the carriage 4 is slidably held in the main scanning direction by the guide rod 4 suspended between the frame 1 and the left side plate 1A and the right side plate 1B of the stay 3, and the carriage 4 The frame 4 is moved in the main scanning direction (arrow direction in FIG. 2 ) by the main scannin...

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Abstract

An image processing method is disclosed. The image processing method includes the steps of detecting one or more dots near a step-shaped changing part of dots of which an outline part of a letter or graphics is composed, by using a reference pattern having a window size of 'm x n' dots in which a number of dots 'm' corresponds to resolution in the main scanning direction and a number of dots 'n' corresponds to resolution in the sub scanning direction, converting the detected one or more dots near the step-shaped changing part that is nearly parallel to the main scanning direction into a dot whose size is smaller than that of dots of the step-shaped changing part, and not converting the detected one or more dots whose part is nearly parallel to the sub scanning direction.

Description

technical field [0001] The present invention relates to an image processing method, an image processing program, and an image forming apparatus. Background technique [0002] As an image forming apparatus such as a printer, a facsimile, a copying apparatus, a plotter, and a multifunctional apparatus combining a printer, a facsimile, and a copying apparatus, there is an inkjet recording apparatus. An inkjet recording apparatus includes an image forming unit that ejects ink droplets of a recording liquid, and can form an image on a recording medium such as paper by ejecting ink droplets from the image forming unit onto a recording medium such as paper. Here, image forming means image printing, image recording, letter printing, and image transmission. [0003] As such image forming devices, there are serial type image forming devices and line type image forming devices. A serial type image forming apparatus forms one line of an image by moving the recording head once or more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/485B41J2/01
CPCB41J2/04593B41J2/04581G06K15/102G06K2215/006B41J2/04588G03G21/00B41J2/01
Inventor 木村隆
Owner RICOH KK
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