Device and method for cleaning and/or operating an ink-jet printer head equipped with an upstream pressure absorber

An inkjet print head and buffer technology, applied in printing and other directions, can solve problems such as damage to buffer capacity and difficulty in generating negative pressure, and achieve the effect of avoiding pressure fluctuations

Active Publication Date: 2020-03-13
扬弗兰克
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the presence of a pressure damper with a continuous channel from its input to its output in this device impairs its damping capacity on the one hand and on the other hand makes it impossible for modern piezoelectric inkjet printheads to The generation of negative pressure becomes difficult because the ink is additionally sucked immediately with each negative pressure

Method used

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  • Device and method for cleaning and/or operating an ink-jet printer head equipped with an upstream pressure absorber
  • Device and method for cleaning and/or operating an ink-jet printer head equipped with an upstream pressure absorber
  • Device and method for cleaning and/or operating an ink-jet printer head equipped with an upstream pressure absorber

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Embodiment Construction

[0035] in the attached figure 1 The device 1 shown in is used for flushing an ink or inkjet print head (not shown) with ink through an upstream pressure buffer 2 .

[0036] The internal structure of pressure buffer 2 is in Figures 2 to 5 It can be seen in:

[0037] The pressure damper 2 is provided with a closed damping chamber 4 at least partially delimited by a damping membrane 3, in which is arranged a refill valve 5 which arches the damping membrane 3 inwards into the damping chamber 4 The refilling of the buffer chamber 4 with ink is controlled in a reactive manner.

[0038] The entire pressure damper module 2 has a square shape, while the damping chamber 4 itself accommodated therein is approximately disc-shaped. However, the housing 7 of the pressure damper 2 has the shape of a frame 8 open on two flat sides, which has four interconnected walls, namely an upper side 9, a lower side 10 and an upper side and a lower side to each other. The two longitudinal sides 11 a...

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Abstract

The invention relates to a device (1) for operating and / or cleaning an ink or ink-jet printer head equipped with an upstream pressure absorber (2), the pressure absorber (2) comprises a closed damperchamber (4) that is at least partially limited by a damper film (3). A refill valve (5) is arranged in the damper chamber (4) and is designed to refill the damper chamber (4) with ink in response to acurvature of the damper film (3) in the damper chamber (4). A controllable device (6) is arranged outside of the damper chamber (4) for exerting an external pressure on at least one area of the damper film (3) limiting the damper chamber (4) in order to open the refill valve (5) arranged in the damper chamber (4) and also to create a continuously open channel through the pressure absorber for cleaning the ink-jet printer head and / or to exert an adjustable pressure on the refill valve arranged in the damper chamber (4).

Description

technical field [0001] The invention relates to a device and a method for flushing and / or operating an ink printhead or an inkjet printhead equipped with a pre-positioned pressure buffer, wherein the pressure buffer is provided with a closed, at least partially, preferably airtight and / or or a chamber defined by a liquid-tight membrane. Background technique [0002] In the development of ink writing machines or printers, the problem of delivering ink as uniformly as possible has long been recognized. For example, DE 2 224 590 A describes the vibration of the ink delivery hose, whereby the ink delivery can be temporarily interrupted, and therefore proposes to arrange a small auxiliary storage, supplied by the actual ink container, on the carriage carrying the writing instrument, and From there, the ink is guided as vibration-free as possible in a short, thin tube to the actual writing needle. However, it is described as disadvantageous that vibrations are also induced on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/175
CPCB41J2/175B41J2/17503B41J2/16517B41J2/17596B41J2/055
Inventor 扬·弗兰克
Owner 扬弗兰克
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