Method and device for transmitting data between main board and spray nozzle panel of ink-jet printer

Abstract

The invention discloses a method for transmitting data between a main board and a spray nozzle panel of an ink-jet printer. The method comprises the following steps that: when the data need to be transmitted, a main control panel of the ink-jet printer receives data information sent by a PC, stores the data information in a buffer memory of an FPGA of the main control panel of the ink-jet printer, and transmits the data information to an LVDS transmission module, the data information undergoes parallel / serial conversion to form the LVDS differential signal, the LVDS differential signal is transmitted to an LVDS receive module of the spray nozzle control panel by an LVDS transmission line to form the single-ended signal, the single-ended signal undergoes the serial / parallel conversion, and the data information is stored in the buffer memory of the FPGA of the spray nozzle control panel; and when the data needs to be received, and the signal is stored in the buffer memory of the FPGA from the FPGA of the spray nozzle control panel; and the following steps are the same as the corresponding steps in data transmission. The device for transmitting the data between the main board and the spray nozzle panel of the ink-jet printer comprises an LVDS differential transmission control unit and an LVDS transmission line. The data transmission method has the advantages of high transmission speed, less transmission lines, and low bit error rate.

Description

technical field [0001] The present invention relates to a data transmission method and device between an inkjet printer main board and a nozzle board, in particular to a low-voltage differential signal (LVDS) transmission method for data between a main control board and a nozzle control board in a wide-format inkjet printer and devices. Background technique [0002] Generally, the width of wide-format inkjet printers is 1.5m-5m. The nozzle control board is usually installed on the nozzle trolley. The main control board cannot be installed on the trolley due to its large size and many connections. It is usually fixed on the machine On the rack, the data transmission line between the main control board and the nozzle control board is generally 5m-11m; In order to improve the printing speed, inkjet printers generally use multiple nozzles to work in parallel. When multiple nozzles work together, a large amount of printing data is required; When the nozzle trolley moves to the c...

AI Technical Summary

Problems solved by technology

Single-ended data transmission cannot meet the above requirements. The data transmission methods between the main control board and the nozzle control board in the inkjet printer in the prior art mainly include differential signal transmission and optical fiber transmission. The differential signal transmission in the prior art adopts Flat wires are directly transmitted in parallel, and there are many transmission lines, between 50-70, the transmission speed is slow, the bit error rate is high, and the electromagnetic compatibility is not good

The advantage of optical fiber transmission lies in long-distance transmission without loss during the transmission process, but the optical fiber transmission line is easy to break, and the optical fiber transceiver modules need to be used in groups, which is costly

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