Inkjet printer nozzle control board and printable data transmission method

Abstract

The invention discloses an ink-jet head control panel of an ink-jet printer and a method for transmission of printable data. One end of the ink-jet head control panel is connected with a master control panel and used for receiving serial printed data after the data are processed and the other end of the ink-jet head control panel is connected with ink-jet heads and used for sending the printable data with no error after verification to the ink-jet heads. The ink-jet head control panel mainly comprises an FPGA, a DES, a CAN chip sending end (PHY), a power module and a peripheral control interface unit. The ink-jet head control panel is characterized in that an SDRAM is additionally arranged on the ink-jet head control panel and connected with the FPGA, bi-directional data transmission can be conducted between the SDRAM and the FPGA, and the SDRAM is used for storing the printable data with no error after the data are verified through the FPGA and finally outputting the printable data with no error after verification to at least one ink-jet head for printing. The SDRAM is provided with multiple zones, the number of the zones is identical to that of the ink-jet heads, and the printable data with no error after verification needed by each ink-jet head are stored in the corresponding zone. In the printing process, the stored printable data with no error after verification are sent to the corresponding ink-jet head for image-text printing by the SDRAM, the phenomenon that the data are transmitted to the ink-jet heads mistakenly after printing operation is started can be avoided, the functions of the ink-jet head control panel are completed, and the ink-jetting efficiency is improved.

Description

technical field [0001] The invention relates to an inkjet printer nozzle control board and a printable data transmission method, in particular to an inkjet printer nozzle control board with SDRAM added and a printable data transmission method using SDRAM. Background technique [0002] The process of printing graphics and text by inkjet printers is usually to store the image data as the printing target in the PC host, the image data includes images or text, and the image data is transformed into a printable format by raster image processing (RIP) The transformation data, and finally the printable data after RIP is sent to the nozzle for graphic printing. The nozzle control board is the connector circuit board from the inkjet printer control system to the nozzle. Each nozzle needs its own interface circuit, one end of which is connected to the nozzle, and the other end is connected to the main control board. The FPGA on the nozzle control board receives the serial printing da...

AI Technical Summary

Problems solved by technology

Inkjet printers generally use multiple nozzles to work in parallel in order to increase the printing speed. When multiple nozzles work together, a large amount of printing data is required. When the nozzle trolley moves to the corresponding position, the nozzle will eject the corresponding data at the corresponding position, so the main control board and The accuracy of data transmission between the nozzle control boards directly affects the quality and efficiency of inkjet printing. Due to the limited memory in the FPGA, it is impossible to store all the printable data at one time. Printing data, if there is a data error in the middle of the transmission process, it will directly affect the inkjet printing graphic and printing process that has already been carried out

This process cannot pre-store the printable data that is verified to be correct. If there is an error in the data transmission process, not only the possibility of waste of ink and media will occur, but also the cost of printing will be increased, and the printing efficiency will be affected.

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