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Inkjet line printer

An inkjet printer, line type technology, used in printing devices, printing, etc.

Inactive Publication Date: 2013-03-27
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in general, since an encoder for detecting the amount of paper feed is used to feed paper with high precision, a high-resolution encoder is used, so it is difficult to directly use the signal from the encoder as a Problems such as the signal of the ejection timing of the metered ink

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0018] Next, an inkjet line printer to which the present invention is applied will be described with reference to the drawings.

[0019] (overall composition)

[0020] figure 1 It is a schematic longitudinal sectional view showing the overall configuration of the line inkjet printer according to the embodiment of the present invention. The line inkjet printer 1 is a printer that prints on rectangular recording paper P using multiple color inks. A roll paper loading part 2 is provided at the rear side of the line inkjet printer 1, and the recording paper P derived from the roll paper Q loaded here is drawn along the path for specifying the printing position A performed by the inkjet head 3. It is conveyed via the conveyance path 5 on the surface of the platen 4 .

[0021] A paper guide 6 for preventing the recording paper P from skewing is disposed above the roll paper loading unit 2, and a lead-out roller 7 for leading the recording paper P from the roll paper Q is disposed...

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PUM

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Abstract

An inkjet line printer (1) has a first encoder (31) for detecting the media conveyance distance of the paper feed roller (10), and a second encoder (34) for generating a signal to control the ink ejection timing. The encoder scales (32, 35) of the first encoder (31) and second encoder (34) are disposed to the intermediate roller (20) of a speed reducing mechanism (13) that transfers drive power from the paper feed motor (12) to the paper feed roller (10). Because the second encoder (34) outputs a pulse signal with a predetermined number of pulses in the time the recording paper is conveyed a specific distance by the paper feed roller (10), the signal from the second encoder (34) can be used as a signal to control the timing of ink ejection from the inkjet head (3).

Description

technical field [0001] The present invention relates to a line type inkjet printer which acquires a signal for measuring ink ejection timing from an encoder. Background technique [0002] As an inkjet printer, it is generally a serial inkjet printer as follows: by alternately carrying out the paper feeding action of conveying the recording paper along the conveying path passing through the printing position and the inkjet printer installed on the ink carriage at the printing position Printing is performed on the recording paper by an ink discharge operation in which the head moves in the width direction of the recording paper perpendicular to the paper feeding direction and simultaneously discharges ink toward the recording paper. Patent Document 1 describes such a serial inkjet printer. The serial inkjet printer of this document includes a motor encoder for detecting the paper feed amount of the recording paper and a linear encoder for detecting the position of the inkjet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41J29/393
CPCB41J2/155B41J11/42B41J29/38
Inventor 中津理志奥田泰康滨川宽史品川洋辉
Owner SEIKO EPSON CORP
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