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Droplet selection mechanism

A droplet, selective technology used in typewriters, printing, etc. to solve problems such as disturbances

Inactive Publication Date: 2010-10-06
NEDERLANDSE ORG VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This results in turbulence in the jetted fluid exiting the outflow port

Method used

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Embodiment Construction

[0013] figure 1 A first schematic embodiment of a continuous printing head 1 according to the invention is shown. The print head 1 comprises a first drop ejection system 10 arranged to generate a continuous stream of first drops 6 from jetting fluid 60 ejected from the discharge channel 5 . The droplet ejection system 10 comprises a chamber 2 delimited by walls 4 . The chamber 2 is adapted to contain a pressurized fluid 3 which is pressurized, eg by a pump or by a pressurized supply system (not shown). The chamber 2 comprises an outlet channel 5 through which a pressurized spray fluid 60 is ejected from the channel and breaks up in the form of droplets 6 . As schematically shown in the figure, the actuator 7 is formed near the discharge passage and may be a vibrating piezoelectric member. Actuation of the actuator 7 creates pressure pulses which break up the jet fluid and thus form small monodisperse droplets 6 .

[0014] The outlet openings 5 ​​are contained in a relative...

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PUM

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Abstract

A method and droplet selection device are provided for a continuous printer for selectively ejecting a second droplet (61) and to have it collided with a predefined first droplet (62). In particular, the device comprises a first droplet ejection system (10) arranged to generate a continuous stream of first droplets (6) from a fluid (60) jetted out of an outlet channel (5); and a second droplet ejection system (100) arranged to generate second droplets for colliding for the second droplets into the first droplets so as to selectively deflect the first droplets from a predefined printing trajectory. The second droplet ejection system comprises a control circuit (11) to selectively eject the second droplet and to have it collided with a predefined first droplet.

Description

technical field [0001] The present invention relates to drop selection devices for continuous printing systems. In this regard, continuous jet printing technology intends to continuously generate droplets that can be selectively used in predetermined printing processes. In contrast to so-called drop-on-demand techniques, where drops are produced according to a predetermined printing process, the supply of drops is continuous. Background technique [0002] A known device is described, for example, in US 4,341,310. This document discloses a so-called continuous jet printer which prints material using a first droplet ejection system arranged to generate a continuous first liquid stream from the fluid ejected from the discharge channel. trickle. The pressure regulating mechanism varies the pressure of the viscous fluid adjacent the outlet with a predetermined regularity as the fluid exits through the discharge passage. This results in turbulence in the spray fluid flowing ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/09B41J2/03B41J2/185B41J3/54
CPCB41J2/09B41J2/03
Inventor 罗纳德乌斯·雅克布斯·约翰尼斯·布特勒内·乔斯·霍本赫里特·奥斯特胡伊斯安东尼乌斯·保卢斯·奥贝尔斯
Owner NEDERLANDSE ORG VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO