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Method for processing overlapped positioning error of splicing spray heads

A processing method and technology of positioning error, applied in printing and other directions, can solve the problems of small printing range of nozzles and large errors of nozzle head and tail splicing, and achieve the effect of simple, accurate and reliable method.

Inactive Publication Date: 2010-08-11
SHANGHAI TECKWIN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In large-scale output digital inkjet printers, the method of head-to-tail splicing is often used to solve the problem of small printing range of a single nozzle
However, the end-to-end connection method of the nozzle is affected by the machining accuracy of the machine and the positioning error of repeated disassembly and assembly, which makes the error of the end-to-end splicing of the two nozzles very large.

Method used

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  • Method for processing overlapped positioning error of splicing spray heads
  • Method for processing overlapped positioning error of splicing spray heads
  • Method for processing overlapped positioning error of splicing spray heads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: deep and shallow feathering processing: (such as Figure 2A shown), you can set:

[0030] Measured to get X4 1 =X4 0 ;

[0031] a1=20%, b1=20%;

[0032] a2=40%, b2=40%;

[0033] a3=60%, b3=60%;

[0034] a4=80%, b4=80%;

[0035] Then a1+b4=100%;

[0036] a2+b3=100%;

[0037] a3+b2=100%;

[0038] a4+b1=100%.

[0039] The feathering treatment of the nozzles a and b at the overlap can be realized, so that the final effect is consistent with the effect of the non-overlapping part. This feathering effect can also effectively solve the performance change or blockage of the nozzles caused by the long-term inactivity of some nozzles during the non-eathering process.

[0040] The feathering percentage value can be defined arbitrarily or generated randomly, but it needs to meet the requirement of consistent total amount.

Embodiment 2

[0041] Embodiment 2 (as Figure 2C shown): Total compensation method.

[0042] Measured to get X4 3 >X4 0 ,

[0043] Then the total amount should increase: X4 3 / X4 0 , then both a1-a4 and b1-b4 should be increased by X4 3 / X4 0 amount.

[0044] Such as: X4 3 / X4 0 = 112.5%,

[0045] Suppose a1 and b1 differ by half a point

[0046] Then a1=20%*1.125=22.5%;

[0047] a2=40%*1.125=45%;

[0048] a3=60%*1.125=67.5%;

[0049] a4=80%*1.125=90%;

[0050] Then b1-b4 is also similar, and finally the total amount of dots in the X3 area is consistent with the effect of the dots not in this area.

Embodiment 3

[0051] Embodiment 3 (as Figure 2B ):

[0052] The actual measurement results in a complete misalignment of one point, then

[0053] X4 2 / X4 0 = 125%;

[0054] Then a1=20%*1.25=25%;

[0055] a2=40%*1.25=50%;

[0056] a3=60%*1.25=75%;

[0057] a4=80%*1.25=100%;

[0058] Then b1-b4 is also similar, and finally the effect in the X2 area is consistent with the spray point effect in the non-this area. also with Figure 2A The results shown are consistent.

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Abstract

The invention relates to a method used for overlapped positioning and transition processing of digital ink jet printer spray head splicing. Errors are avoided by using the flexibility and the alterability of digital control and an end-to-end overlapping method. N overlapped dot pitches are preset and trial printing is performed on a drawing in advance so that an overlapping relation of dots is predicted. According to the number of overlapped dots, the overlapped parts of the head and the tail of the spray heads a and b are printed with part of ink dots, so the relation of mackle is eliminated, and intervals among at least n dot ditches can be regulated so that all kinds of errors are corrected.

Description

technical field [0001] The invention relates to a method for overlapping positioning and transition processing for splicing nozzles of a digital jet printing machine. Background technique [0002] In large-scale output digital inkjet printers, the method of splicing the nozzles from the end to the end is often used to solve the problem of small printing range of a single nozzle. However, the end-to-end connection method of the nozzle is affected by the machining accuracy of the machine and the positioning error of repeated disassembly and assembly, which makes the error of the end-to-end splicing of the two nozzles very large. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a simple, accurate and reliable method for overlapping positioning and transition processing of splicing nozzles of digital jet printers for compensating errors caused by the splicing of two nozzles. [0004] In order to solve the above techn...

Claims

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Application Information

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IPC IPC(8): B41J2/145
Inventor 童舟
Owner SHANGHAI TECKWIN TECH DEV
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