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Inkjet printing device

An inkjet printing device and inkjet head technology, applied in printing and other directions, can solve the problems of peeling off the waterproof layer on the surface of the nozzle and rising ink cost, and achieve the effects of inhibiting peeling, inhibiting corrosion, and inhibiting ink oxidation.

Active Publication Date: 2013-07-24
MIMAKI ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present inventors have noticed the following problem: If such an inkjet head is used for a long time, even after the above-mentioned maintenance, the waterproof layer on the surface of the head may sometimes be peeled off (corrosion of the inkjet head)
However, since the cost of ink improved by adding additives increases, it is not preferable considering that ink is a consumable

Method used

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Examples

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Embodiment

[0066] As an example, using the inkjet printing apparatus 100 of the present invention, in an environment with a temperature of 45° C. and a humidity of 90%, after leaving the inkjet head 10 in a printing stop state for 7 days, its nozzle surface 14 was tested. observe. In the embodiment, the state of immersing the nozzle surface 14 in the protective liquid 27 inside the cap 21 is maintained during the stop of printing of the inkjet head 10 .

[0067] On the other hand, as a comparative example, using the same mechanism as the inkjet printing apparatus 100 of the present invention, under the same environment, the nozzle surface 14 was observed after the inkjet head 10 was left for 7 days with the printing stopped. . In the comparative example, the protection mechanism 20 was not used, and the state in which the nozzle surface 14 was exposed to the atmosphere was kept unchanged during the printing stop of the inkjet head 10 .

[0068] In addition, in Examples and Comparative ...

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PUM

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Abstract

Provided is an inkjet printing device that can perform suitable printing even when used over long periods. This inkjet printing device (100) comprises an inkjet head (10) having a nozzle surface (14) on which nozzles are formed, and a cap (21) to which a protective fluid is supplied. The inkjet head (10) is configured from a metal portion (11), and a water repellent layer (12) that is formed on the surface of the metal portion (11) and that forms the nozzle surface (14). The nozzle surface (14) of the inkjet head (10) is maintained in a protective fluid-soaked state in the cap (21).

Description

technical field [0001] The invention relates to an inkjet printing device. Background technique [0002] Generally, an inkjet printing device is provided with an inkjet head, so that the ink droplets ejected from the nozzles formed on the inkjet head adhere to the printing medium in a layered form, thereby performing desired characters, graphics, patterns, etc. on the printing medium. Printing of photos, etc. [0003] In such an inkjet head, there is a problem in that the ink ejection performance of the inkjet head deteriorates due to ink adhering to the nozzles due to the structure for ink ejection. Therefore, a general inkjet printing apparatus has a maintenance mechanism for maintaining and restoring the ejectability of the inkjet head. [0004] For example, Patent Document 1 discloses such a technique: during the period when ink is not ejected, in order to prevent the ink from drying and solidifying at the tip of the nozzle protruding to the outside of the inkjet head,...

Claims

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Application Information

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IPC IPC(8): B41J2/165B41J2/01B41J2/175
CPCB41J2/16508B41J2/16552
Inventor 土方康之并木崇三石朋子塚田晃弘宫越广美
Owner MIMAKI ENG
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