Printheads and inkjet printers for inkjet printers

Abstract

The invention discloses a printing head of an inkjet printer and the inkjet printer. The printing head comprises a body, a spray nozzle and a laser emitter; wherein the body is provided with ink containing cavities; the ink containing cavities are provided with spraying ends and heating ends; and lasers emitted by the laser emitter can be injected into the heating ends. According to the printing head of the inkjet printer, the printing effect is improved; the problems of connection between pixels, color mixing and the like are avoided; the processing cost and the manufacturing cost are reduced; the problem of residual heat of the printing head can be avoided to a large extent; the problem that the performance of the printing head is affected after the printing head is rapidly heated underthe action of a high current in the related art is solved; the printing head can continuously work; and the printing speed is high. In addition, the laser transmitter is adopted to emit the lasers, the working current of the laser transmitter is reduced on the premise of realizing the same printing effect, so that the working current of the printing head is reduced, and the use cost is reduced.

Description

technical field [0001] The invention relates to the technical field of OLED inkjet printing, in particular to a print head of an inkjet printer and an inkjet printer Background technique [0002] OLED (organic light emitting diode), as the next-generation display technology of LCD display, has excellent performances such as thinness, high color gamut, high contrast, low power consumption, and flexibility, and has attracted more and more attention. The preparation process of the OLED display device includes: vacuum evaporation (Evaporation, EVP) and ink jet printing (Ink Jet Printing, IJP) technology. Vacuum evaporation technology is suitable for small organic molecules, and its characteristic is that the organic film is vacuum-evaporated, and the thickness of the film is uniform, but the equipment investment is large, the material utilization rate is low, and it is not suitable for the production of large-scale products; compared with evaporation technology, Inkjet printing...

AI Technical Summary

Problems solved by technology

In order to further improve the integration of large-scale printing equipment to print large sizes, the print head needs to apply a current of up to several amperes, resulting in a large manufacturing cost and use cost of the printing equipment.

In addition, the temperature of the circuit components in the print head will rise rapidly under the action of high current, which will affect the performance and affect the printing quality. In order to ensure the printing quality, the print head needs to work periodically, and the print head cannot exchange heat at high speed.

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