Method for inkjet recording and device for inkjet recording


B41J2/015 - for serial printing

FIELD: printing industry.

SUBSTANCE: inkjet recording method implemented by an inkjet recording device including a nozzle plate with a nozzle for ink droplets discharge; a recording head including a liquid chamber to which the nozzle is connected and a pressure generation unit configured to generate pressure in the liquid chamber; and a signal generation unit configured to generate a signal applied to the pressure generation assembly and making it possible to discharge the ink droplets under the pressure generated by the pressure generation unit in accordance with the, signal where ink has a static surface tension of 18.0 mN/m to 27.0 mN/m at 25C, ink has a retracting contact angle on the nozzle plate of 50 or more, the signal has a two-stage traction pulse to draw the ink into the nozzle in a two-step manner within one single cycle and the method includes drawing of ink located near the nozzle outlet into the nozzle under the action of the two-step traction pulse to form a meniscus at a predetermined location.

EFFECT: provision of an inkjet recording method that makes it possible to produce a stable output of ink having a low static surface tension and a large retracting contact angle, and which provides a high quality image.

12 cl, 23 dwg, 17 tbl

 



 

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The invention relates to methods and apparatus for inkjet printing and can be used to apply information to the media

FIELD: printing industry.

SUBSTANCE: inkjet recording method implemented by an inkjet recording device including a nozzle plate with a nozzle for ink droplets discharge; a recording head including a liquid chamber to which the nozzle is connected and a pressure generation unit configured to generate pressure in the liquid chamber; and a signal generation unit configured to generate a signal applied to the pressure generation assembly and making it possible to discharge the ink droplets under the pressure generated by the pressure generation unit in accordance with the, signal where ink has a static surface tension of 18.0 mN/m to 27.0 mN/m at 25C, ink has a retracting contact angle on the nozzle plate of 50 or more, the signal has a two-stage traction pulse to draw the ink into the nozzle in a two-step manner within one single cycle and the method includes drawing of ink located near the nozzle outlet into the nozzle under the action of the two-step traction pulse to form a meniscus at a predetermined location.

EFFECT: provision of an inkjet recording method that makes it possible to produce a stable output of ink having a low static surface tension and a large retracting contact angle, and which provides a high quality image.

12 cl, 23 dwg, 17 tbl

FIELD: printing industry.

SUBSTANCE: system includes at least one printing head for receipt and distribution of materials, containing the flowing liquid and hydrogel, the printing head has the material feed opening, the microfluid channels for receipt and distribution of materials, the fluidic switches, installed in the printing head on each microfluid channel and configurable in such a way as to ensure or stop the liquid flow through the microfluid channels, when it is activated; the receipt surface for receiving the first layer of materials, supplied from the opening; positioning mechanism to position the printing head opening in three-dimensional space; and the feeding device for distributing the material, coming from the opening in the printing head.

EFFECT: increase of the printing speed and efficiency.

36 cl, 10 dwg

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