Phase different electronic calibration system of multiple-spray-head printing spray points

Abstract

The invention relates to the field of multiple-spray-head ink-jet printers and provides a phase different electronic calibration system of multiple-spray-head printing spray points. The phase different electronic calibration system of the multiple-spray-head printing spray point comprises a main board, a phase logic processing unit, a first asynchronous first in first out (FIFO), a second asynchronous FIFO, a first driving circuit, a second driving circuit, a first spray head and a second spray head. By adopting an electronic calibration technology, machine calibration difficulty is reduced, and mechanical calibration mechanism is simplified. A spray head dolly direction signal is used for judging positive and negative of phase, thereby reducing complexity of the phase logic processing unit and simultaneously improving the reliability. Phase transmission is shown by adopting pulse width, thereby improving flexibility and reliability of the main board controlling phase different between the two spray heads. By means of separation of the phase logic processing unit and the main board, original main board design is retained ingeniously, development cost is reduced, and development progress is accelerated. The number of signals of the main board and the spray head driving circuits is decreased, the cost is reduced, and the signal sending reliability of the main board is improved.

Description

technical field [0001] The invention relates to the field of multi-nozzle inkjet printers, in particular to a phase difference electronic calibration system for multi-nozzle printing dots. Background technique [0002] At present, multi-nozzle printers have been widely used, but because each nozzle is installed independently, there will be deviations in angle and distance during the process. For example Figure 1-2 As shown, there are 2 nozzles installed on the nozzle trolley 3 of the printer: reference nozzle 1 and calibration nozzle 2. Such as figure 1 As shown, the distance error D1 and angle difference between the reference nozzle 1 and the calibration nozzle 2 in the front and rear directions can be easily resolved by manual adjustment; but the distance error D2 in the left and right direction between the reference nozzle 1 and the calibration nozzle 2 , it is difficult to accurately calibrate manually. If the ignition cycle error is d1, when the distance error D2 b...

AI Technical Summary

Problems solved by technology

A small number of powerful printer manufacturers solve the problem by selling nozzle groups. Each nozzle group is calibrated by high-precision assembly instruments in the factory to meet this assembly requirement. You can only replace the entire nozzle group, which is very wasteful, which makes the customer's use cost high and is not conducive to popularization and use

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