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Inkjet printer

An inkjet printer, inkjet head technology, applied in the direction of printing device, printing, etc., can solve the problems of reduced printing image quality, reduction of gray scales, etc.

Active Publication Date: 2016-06-08
RISO KAGAKU CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the ejection of only one drop is omitted, the number of gradation levels decreases and the quality of the printed image decreases

Method used

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Embodiment Construction

[0023] Hereinafter, embodiments of the present invention are described with reference to the drawings. In addition, the same or similar reference numerals are assigned to the same or similar parts and components in the drawings, and descriptions of these parts or components are omitted or simplified. In addition, the drawings are schematic and therefore differ from actual ones.

[0024] figure 1 It is a schematic configuration diagram of the inkjet printer according to the embodiment. figure 2 is a plan view of the inkjet head. image 3 yes figure 1 The control block diagram of the inkjet printer is shown. Figure 4 It is a block diagram showing the configuration of the head control unit. In the description below, the figure 1 The direction perpendicular to the surface of the paper is defined as the front-rear direction, and the surface direction of the paper is defined as the front. In addition, in figure 1 , figure 2 In , use RT, LT, UP, DN, FT, and RR to represen...

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PUM

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Abstract

An inkjet printer includes: an inkjet head configured to eject ink; an image acquirer configured to acquire an image data indicating a number of drops of the ink for each of pixels and to output the acquired image data via a communication line; and a head controller configured to convert the image data received from the image acquirer via the communication line such that, in a pixel for which the number of drops of the ink in the received image data is one or more, the number of drops of the ink is incremented while a number of gradation steps of the received image data is maintained, and to control drive of the inkjet head based on the converted image data.

Description

technical field [0001] The present invention relates to an inkjet printer that ejects ink from an inkjet head to perform printing. Background technique [0002] In the inkjet printer described in Japanese Patent Application Laid-Open No. 2009-269313, ink mist in which the ink becomes mist is generated when the ink is ejected from the inkjet head. Ink mist will pollute the inside of the device. Therefore, it is desirable to reduce ink mist. [0003] Here, when a plurality of droplets are ejected per pixel, the airflow (self-airflow) from the nozzle toward the paper due to the flight of the ink droplets becomes stronger, making it difficult for the fine droplets to disperse. Therefore, less ink mist is generated. On the other hand, in the case of discharging one drop, compared with the case of discharging a large number of droplets, the self-flow is weaker, and the fine droplets are more likely to spread, so the ink mist tends to increase. Therefore, in order to reduce ink...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41J29/38
CPCB41J2/04551B41J2/04586B41J2/04595B41J2/2054B41J2/04536
Inventor 中村宏幸
Owner RISO KAGAKU CORP
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