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Liquid discharging device and liquid discharging method

A technology of equipment and droplets, applied in inking device, printing and other directions, can solve the problems of complex selection of driving print heads, equipment burden, and inconspicuous stripes.

Inactive Publication Date: 2004-04-21
SONY GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the serial print head, for this problem, instead of printing the same line in the printing direction by only one ink discharge unit, the paper feed amount is controlled to print the same line in the printing direction by a plurality of different ink discharge units, or After printing with one scan, fill in the gaps in the printed result after several scans, so that the stripes are not obvious
[0012] This method has some disadvantages, it takes a lot of time due to the increase in the number of scan operations of the print head, it puts a burden on the equipment, the frequency of noise occurrence also increases, and the data to drive the print head must be complicated to select

Method used

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  • Liquid discharging device and liquid discharging method
  • Liquid discharging device and liquid discharging method
  • Liquid discharging device and liquid discharging method

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Embodiment Construction

[0064] Embodiments of the present invention will be described below with reference to the drawings. Such as figure 1 , 2 The ink jet printer 100 of the illustrated embodiment is a liquid discharge device having a line print head 120 as a liquid discharge print head.

[0065] The ink jet printer 100 has a print head unit which will be described later as a driving unit for discharging liquid ink droplets. The line printhead 120 in the inkjet printer 100 has a recording range substantially consistent with the width of the paper P, and has a PNM (Pulse Number Modulation) system that realizes the density adjustment function of the dot diameter by the number of ink droplets. For the purpose of explanation here, it is assumed that the maximum number of single-color ink droplets required to make a dot is 8.

[0066] The inkjet printer 100 has a structure in which a line head 120 , a paper feeder 130 , a paper feeder 140 , a paper tray 150 , and an electric circuit part 160 and the...

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PUM

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Abstract

A liquid discharge apparatus includes a liquid discharge head (120) having ink discharge nozzles (203) for discharging droplets of inks, and a head controller (162) for controlling the liquid discharge head to discharge droplet from liquid discharge units onto the surface of recording paper (P), wherein the liquid discharge head includes the plural liquid discharge heads in a direction perpendicular to movement direction of recording paper where the recording paper is relatively moved with respect to the liquid discharge head. The head controller serves to allow discharge timings of droplets in movement direction of the recording paper to be different every one pixel in movement direction of the recording paper to eliminate stripes apt to take place when a portion or the entirety of image is printed by one scanning operation to obtain image having less defect.

Description

technical field [0001] The present invention relates to a liquid discharge device provided with a plurality of liquid discharge units, and at the same time relates to a liquid discharge device and a liquid discharge method adopted, which can make the stripes in part or all of the images printed by one scan less obvious, thereby Get a high quality picture. [0002] This application claims priority from Japanese Patent Application No. 2001-359852 filed on November 26, 2001, the entirety of which is incorporated herein by reference. Background technique [0003] In recent years, a liquid discharge device, such as an ink jet printer, for discharging ink droplets from an ink discharge unit to leave a record on the relevant recording paper has been popularized. This kind of inkjet printer that moves in the direction perpendicular to the paper feeding direction and discharges ink droplets, and has an ink discharge unit every few millimeters in the recording head along the paper fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/05B41J2/145B41J2/155
CPCB41J2/145B41J2/04595B41J2/155B41J2/0458B41J2/04581B41J2202/20B41J2/04573B41J2/205
Inventor 桑原宗市
Owner SONY GRP CORP
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