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A self-sealing filter module for inkjet printing

一种过滤模块、喷墨打印机的技术，应用在印刷、着墨装置等方向，能够解决印刷标记生产线不理想、过滤器更换费时、连续喷墨打印机不能工作等问题

Active Publication Date: 2017-04-26
VIDEOJET TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Filter replacement is time consuming, which means that the continuous inkjet printer cannot function, which is not ideal for printed marking lines
Furthermore, when the filter modules are replaced they often contain a certain amount of ink and are therefore considered hazardous waste (HAZMAT) and special precautions must be taken to dispose of the filter modules

Method used

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  • A self-sealing filter module for inkjet printing
  • A self-sealing filter module for inkjet printing
  • A self-sealing filter module for inkjet printing

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Embodiment Construction

[0017] The inventor has realized that in the process of maintaining the continuous inkjet printer, the filter module to be replaced usually contains a sufficient amount of ink so that the component is regarded as a dangerous product, and some protective measures are required in handling the filter module. The filter module sometimes has a tendency to leak when it is replaced, which can contaminate the work area and printer components. In addition, removing the filter module is usually a rather complicated task, which is time-consuming and troublesome. Therefore, the inventor has developed a "self-sealing" filter module that can minimize or eliminate ink leakage when the continuous inkjet ink flow path is removed. To this end, the filter module is adapted to maximize the evacuating of ink from the filter module when pressure is applied to the ink line and the filter module is removed. Therefore, the filter module according to the embodiment of the present invention can drain th...

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PUM

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Abstract

A filter module (38) for a continuous inkjet printer (10) comprising a filter housing (40) and a filter medium (42) fixed within the housing (40). The filter housing (40) further includes an inlet portal (44) through which ink flows into the housing under pressure and a first self-sealing valve assembly (54) disposed within the inlet portal. In addition, housing includes an outlet portal (46) through which ink flows out of the housing (40) under pressure and a second self-sealing valve assembly (56) disposed within the outlet portal (46). The first and second valve assemblies (54, 56) open when mechanically connected to an ink flow path (34) from an ink tank (18) to a print head (14), and the first and second valve assemblies (54, 56) seal closed when mechanically disconnected from the ink flow path (34).

Description

Technical field [0001] The present invention relates to inkjet printing, and more particularly, to the filtration of ink supplied to the print head of a continuous inkjet printer. Background technique [0002] In an inkjet printing system, printing is composed of individual ink droplets generated at the nozzle and pushed to the substrate. There are two main systems: drop-on-demand, where print ink drops are generated when needed; and continuous inkjet printing, where ink drops are continuously generated and only a selected portion is directed to the substrate, and the rest is recycled to the ink source. [0003] Continuous inkjet printers feed pressurized ink to a printhead droplet generator, where a continuous stream of ink from nozzles is broken up into individual regular droplets by, for example, vibrating piezoelectric elements. The droplets are guided through the charging electrode, where the droplets are selectively and individually applied with predetermined charges before ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/175
CPCB41J2/17513B41J2/17523B41J2/17553B41J2/17563B41J2/17596B41J2/02B41J2202/20
Inventor R·史密斯M·斯坦普P·金
Owner VIDEOJET TECH INC
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