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Inkjet printing apparatus

An inkjet printing and ink technology, applied in printing and other directions, can solve the problems of decreased printing quality, inability to print, clogging, etc., and achieve the effect of suppressing inability to print

Active Publication Date: 2022-03-15
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the sedimentation and agglomeration of the particle components of the ink become the cause of coarse particles and fluctuations in ink concentration. Coarse particles may clog the nozzles of the print head and cause printing failure, or ink concentration fluctuations may degrade printing quality.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0071] figure 1 The inkjet printing apparatus 100 of the first embodiment is shown. in, figure 1 It is an explanatory diagram of the inkjet printing apparatus 100 .

[0072] Hereinafter, first, the outline of the inkjet printing apparatus 100 will be described, and then each component will be described in detail.

[0073] It should be noted that the important features of the inkjet printing apparatus 100 are that (a) the first filter 5 is provided in the supply pipe 12 described later, and (b) the second head circulation pipe 9 described later is not provided. filter.

[0074] The inkjet printing device 100 includes a first ink tank 1 , a head 2 , a first pump 3 , a first filter 5 , and a stage 7 . It should be noted that, in figure 1 The ink 50 and the object to be printed 60 are also shown in FIG.

[0075] The first ink tank 1 includes a third ink supply port 1c, a first ink storage portion 1d, and a first ink outlet 1e. In addition, the third ink supply port 1c is...

Deformed example 2

[0119] (Modification 2 of the first embodiment: inkjet printing device 120 )

[0120] image 3 An inkjet printing device 120 according to Modification 2 of the first embodiment is shown. The inkjet printing apparatus 120 is further modified from the inkjet printing apparatus 110 of Modification 1. FIG.

[0121] In the inkjet printing device 120 , an air-opening degassing channel 13 extending vertically upward is provided between the first pump 3 and the second filter 6 of the first head circulation piping 8 of the inkjet printing device 110 . The inkjet printing device 120 can remove unnecessary air bubbles from the ink flowing through the first head circulation piping 8 through the degassing channel 13 .

[0122] It should be noted that the upper surface of the ink contained in the degassing channel 13 is kept within a fixed range by the balance between the self-weight of the ink and the pressure of the ink ejected by the first pump 3 . Therefore, ink does not overflow fro...

no. 2 approach

[0134] Figure 6 The inkjet printing apparatus 200 of the second embodiment is shown. in, Figure 6It is an explanatory diagram of the inkjet printing apparatus 200 .

[0135] The important features of the inkjet printing device 200 are: (c) the first filter 5 is provided in the supply pipe 12; The flow path resistance of the first suction port 3a, that is, the second flow path resistance is set to 10 times the flow path resistance from the discharge port 2c of the nozzle 2 to the first suction port 3a of the first pump 3, that is, the first flow path resistance. above.

[0136] In addition, in this specification, the flow path resistance of the flow path provided with a filter means the flow path resistance in the state containing a filter.

[0137] In above-mentioned experiment 1, when all setting filter (sample 1) between the shower head 2 and the first connection point J1 of piping 12 and the second shower head circulation piping 9 for supplying, the ink from the showe...

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PUM

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Abstract

The invention provides an ink jet printing apparatus, which can restrain printing failure caused by clogging of nozzles of a spray head, ink concentration variation, intrusion of bubbles into ink, leakage of ink from the nozzles of the spray head, and the like, and can restrain printing quality decline caused by the clogging of the nozzles of the spray head and the like. A first nozzle circulation pipe (8) connecting the first pump (3) and the nozzle (2); a second nozzle circulation pipe (9) connecting the nozzle (2) and the first pump (3); a supply pipe (12) connecting the first ink tank (1) and the second nozzle circulation pipe (9); and a first filter (5) disposed in the supply pipe (12). The second nozzle circulation pipe (9) is not provided with a filter.

Description

technical field [0001] The present invention relates to an inkjet printing device that ejects ink from nozzles of a head to perform printing. Background technique [0002] When printing with an inkjet printing device using ink in which particle components (pigments, metal particles, etc.) are dispersed, it is an important issue to suppress the sedimentation and aggregation of the particle components of the ink in the inkjet printing device. This is because the sedimentation and agglomeration of ink particle components cause coarse particles and fluctuations in ink concentration. Coarse particles may clog the nozzles of the head and cause printing failure, or the ink concentration may fluctuate to degrade printing quality. [0003] Patent Document 1 discloses an inkjet printing device that suppresses sedimentation and aggregation of particle components of ink. Figure 13 The inkjet printing apparatus 1000 of patent document 1 is shown. [0004] The inkjet printing device 100...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/165B41J2/21
CPCB41J2/165B41J2/21B41J2/16502
Inventor 后藤诚治岩越邦男山川纱百理西村幸人
Owner MURATA MFG CO LTD
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