Ink-jet printing head and ink-jet printer

Abstract

The invention discloses an ink-jet printing head which comprises at least one jetting unit, a cover film, a piezoelectric ceramic actuator, a cover plate, a fluid inflowing pipeline, a fluid outflowing pipeline and a driving circuit device. The cover film, the piezoelectric ceramic actuator and the cover plate are matched with the jetting unit, the piezoelectric ceramic actuator and the cover plate are connected to form a plurality of disconnected and independent piezoelectric ceramic units, the cover plate is connected with the jetting unit, a plurality of fluid grooves are formed in the position, arranged on one side of the jetting unit, of the connecting contact face, the piezoelectric ceramic units correspond to grooves in the fluid grooves in position, the fluid grooves and the cover plate form a fluid channel, each fluid channel is correspondingly provided with at least one nozzle to be communicated with the exterior, and therefore the ink-jet printing head forms the side face or end face jetting. Correspondingly, the invention further discloses an ink-jet printer. According to the ink-jet printing head and the ink-jet printer, on the premise that the deformation amount of the piezoelectric ceramic actuator can be increased, and the effective jetting motion of the large-particle-size ink is achieved, the adjacent nozzles can conduct simultaneous motion, therefore all the nozzles can work at the same time, and the working efficiency is improved.

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 XAAR1001 GS6 and XAAR1001 GS12 inkjet heads with high market share, adopt the piezoelectric ceramic groove cutting process, through the shear deformation of the piezoelectric ceramic groove wall, Realize the extrusion action of ink, 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 The inkjet action is realized in time sequence and cannot be acted at the same time

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