An inkjet printer signal synchronous breakout board and signal transmission method

Abstract

The invention discloses an inkjet printer signal synchronous splitter board and a signal transmission method, which are characterized in that one end is provided with a receiving port to receive a detection signal, and the other end is provided with an output port connected to a nozzle control board to output a detection signal, and the signal synchronous splitter board An FPGA is set inside, and the FPGA splits the received detection signal into at least two channels of identical detection signals at the same time, and the output port transmits the split at least two channel detection signals to at least two nozzle control boards synchronously and in parallel for Control nozzle printing. The signal synchronization breakout board divides the detection signal into multi-channel signals, and can connect multiple printhead control boards at the same time, thereby controlling more printheads for inkjet printing. Arranging multiple printheads in different ways can increase the printing width and printing speed , Enhance the printing resolution or achieve multi-color printing, and at the same time make the control boards of each nozzle receive signals synchronously, avoiding the printing lag of a certain nozzle caused by signal asynchrony, and avoid affecting the quality of inkjet printing.

Description

technical field [0001] The invention relates to an inkjet printer signal synchronous branching board and a signal transmission method, in particular to a signal synchronous branching that simultaneously taps detection signals into multiple channel signals and transmits them to multiple nozzle control boards synchronously and in parallel Board and signal transmission method. Background technique [0002] Inkjet printers can be divided into two types according to the way of printing graphics and texts. One is to spray graphics and texts with the reciprocating motion of the nozzle; the other is to spray graphics and texts in a way that the nozzle does not move and the printing medium moves, that is, the Onepass method, and the printing is usually variable. This type of inkjet printer is used for data such as barcodes and receipt information. The Onepass printing speed is very fast, and can reach a printing speed of 200m / s or faster, while ensuring high printing quality, and th...

AI Technical Summary

Problems solved by technology

When each nozzle starts to eject ink droplets is determined by the received detection signals, one of which is the starting position signal of the printing medium page detected by the sensor, and the other signal is the raster signal detected by the encoder. After the detected signal is transmitted to the print head control board, the host computer sends the print start command through the CAN bus to control the print head to start ink ejection. According to the receiving address of the board, the start print command is first passed to the first print head control board, and then the start print The command is passed to the second print head control board, and so on, until the print start command is passed to the last print head control board, because different print head control boards receive the start print command sent by the host successively, so the moment of receiving the start print command will appear A small time interval, so that the start printing command received by the print head connected to the print head control board is asynchronous, which may cause the spray head to lag after receiving the start print command and affect the printing effect

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