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Improved obturator and preparation method thereof

A technology of obturator and mobile obturator, which is applied in the direction of mechanical equipment, valve operation/release device, valve lift, etc., and can solve the problems of increased surface wear rate of obturator and nozzle, high driving voltage, deterioration of print head performance, etc. , to compensate for assembly and/or manufacturing tolerances

Active Publication Date: 2018-08-03
I C S R L CON SOCIO UNICO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this behavior leads to increased wear rates on the obturator and nozzle surfaces, which in turn leads to poor printhead performance, and also requires higher drive voltages

Method used

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  • Improved obturator and preparation method thereof
  • Improved obturator and preparation method thereof
  • Improved obturator and preparation method thereof

Examples

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Embodiment Construction

[0034] In particular but not exclusively, the obturator device according to the invention is Figure 2-4 Denoted in its entirety by reference numeral 1, the obturator device may advantageously be applied to an inkjet printhead for digitally depositing ink drops in rows, for example using a glaze composition to print / coat substrates such as ceramic tiles to obtain specific Surface finishes include protective coatings, giving matte parts a gloss finish for localized effects, or using engobe components to provide textural effects to mimic stone, wood, grain, etc.

[0035] While a glaze is used below to describe the operation of the printhead, it will be appreciated that any suitable fluid may be used depending on the particular application, such as methyl ethyl ketone or acetone for printing on cardboard / paper / food packaging based inks, polymer / metal based inks for 3D printing, engobes for printing on ceramics or food based fluids such as chocolate.

[0036] Glazes themselves ma...

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PUM

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Abstract

The invention relates to an obturator device (1) for a printing head, comprising: an obturator assembly (3) having a device capable of moving along at least one direction of movement (X) between a first position and a second position A moving valve surface (6), in a first position the valve surface (6) has a certain distance from the reference surface (A), in a second position the valve surface (6) touches the reference surface (A); the actuator (2 ), the actuator is fixed to the obturator assembly (3), and can be operated to move the obturator assembly (3) between the first position and the second position; it is characterized in that the obturator assembly (3) includes a An adjustable coupling (11) configured to allow adjustment of the orientation of the valve surface (6) relative to the reference surface (A), thereby ensuring improved engagement between the surfaces.

Description

technical field [0001] The invention relates to an obturator device comprising an obturator assembly and an actuator. In particular, the obturator device according to the invention can be advantageously applied to the print head of an inkjet printer, which can be used for the row decoration of tiles. Background technique [0002] Conventional printheads for inkjet printing fluids (e.g., glazes, engobes, inks, etc.) include, inter alia, actuation elements associated with an obturator assembly and for ejecting fluid from a cavity into a At least one nozzle on the substrate (eg tile), whereby the obturator is operable to close / open the nozzle relative to the cavity to control ink droplet ejection from the cavity. [0003] For example, EP1972450B discloses an example of a conventional print head 100 for printing glazes, as shown in cross-section in FIG. 1 . The printhead 100 comprises a fluid chamber 102 having a fluid inlet (not shown) and a fluid outlet (not shown) and conne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/14
CPCB41J2/14201B41J2202/05B41J2/04B41J2/17596F16K1/16F16K31/004F16K99/0048
Inventor G·M·吉多蒂G·巴尔班蒂M·法雷特拉
Owner I C S R L CON SOCIO UNICO