Inkjet print head and inkjet printer

Abstract

The invention discloses an inkjet printing head, which comprises at least one ejection unit, a cover film matched with the ejection unit, a piezoelectric ceramic actuator and a cover plate, a fluid inflow pipeline, a fluid outflow pipeline and a driving circuit device ; The piezoelectric ceramic brake and the cover plate are connected to form a number of independent piezoelectric ceramic units that are not connected to each other; the cover plate is connected to the injection unit, and the connection contact surface is provided with a number of fluid grooves on one side of the injection unit. The position of the unit corresponds to the position of the groove of the fluid tank; the fluid channel and the cover plate form a fluid channel, and each fluid channel is correspondingly equipped with at least one nozzle leading to the outside, so that the inkjet print head forms side or end surface spraying. Correspondingly, the invention also discloses an inkjet printer. With the present invention, on the premise of increasing the deformation of the piezoelectric ceramic brake and realizing the effective ejection action of the large-diameter ink, adjacent nozzles can operate simultaneously so that all nozzles can work simultaneously, thereby improving work efficiency.

Description

technical field [0001] The invention relates to the field of inkjet printing, in particular to an inkjet printing head and an inkjet printer suitable for inkjet printing, glaze decoration and biopharmaceuticals. Background technique [0002] At present, there are many types of ink nozzles and glaze nozzles driven by piezoelectric ceramics, but usually this type of inkjet print head (referred to as the nozzle) is separated from the ink cartridge for the convenience of replacement and cost reduction, and there is no need to replace the nozzle when changing the ink cartridge , so the nozzle is used for a long time, and the ink and impurities deposited in the ink chamber for a long time will easily cause the blockage of the fluid groove or nozzle, which has become a bottleneck problem that limits the life of the nozzle based on piezoelectric ceramic drive. Therefore, in recent years, many innovative designs have considered or pursued how to avoid the clogging of nozzles, so as t...

AI Technical Summary

Problems solved by technology

The existing piezoelectric ceramic inkjet heads in the market, such as the British XAAR1001GS6 and XAAR1001GS12 inkjet heads with a high market share, adopt the piezoelectric ceramic groove cutting process, through the shear deformation of the piezoelectric ceramic groove wall, the ink Extrusion action, but because the action of the groove wall will affect the ejection action of the adjacent groove wall, the nozzle plate of the existing inkjet head is generally designed according to three groups of nozzles, and the nozzles in the same group are divided into time Sequence to achieve inkjet action, can not act at the same time

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