Nozzle positioning method, positioning system and detection system of inkjet printing device

Abstract

The present invention relates to a location method and system of a nozzle of an ink-jet printing device and a detection system of an ink-jet printing device. The method comprises the following steps of: performing ink-jet test to obtain ink droplet images of ink jet by a preset number of nozzles and obtain actual coordinates of a calibration nozzle; performing comparison of the actual coordinateswith each preset standard coordinate in order to obtain a coordinate offset until the coordinate offset meets a preset offset threshold value requirement to obtain actual numbers of the calibration nozzle and obtain the actual numbers of other nozzles of the ink-jet printing head according to the actual numbers of the calibration nozzle. The location method can avoid that the numbers of the calibration nozzle is manually defined by mistake and further allow the coordinates of all the nozzles of the ink-jet printing device not to be prone to located by mistake.

Description

technical field [0001] The invention relates to the field of inkjet printing equipment, in particular to a nozzle positioning method, a positioning system and a detection system of an inkjet printing device. Background technique [0002] At present, functional layers such as the hole injection layer (HIL), the hole transport layer (HTL), and the light emitting layer (EML-RGB) of light-emitting devices such as OLEDs can be fabricated by inkjet printing. However, when making functional layers made of different materials, it is usually necessary to replace different types of inkjet printheads according to the materials used in the functional layers. In the process of producing light-emitting devices such as OLEDs, whenever an inkjet printhead of a different type is replaced, it is necessary to confirm in advance the status of ink output from nozzles (nozzles) of the inkjet printhead (Print head). [0003] Usually, when detecting the nozzles (nozzles) of the inkjet print head (...

AI Technical Summary

Problems solved by technology

However, when the first nozzle of the inkjet print head is clogged, the first drop of ink that should be ejected by the first nozzle cannot be displayed in the detection frame of the display interface, and the first drop of ink that actually appears is other Nozzle ejected, but in the artificial positioning, the first drop of ink ejected by the other nozzles is regarded as the first nozzle ejected, so that when the inkjet printing is aligned, there will be alignment Misalignment, affecting the production of the product

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