The Design And Implementation Of High-speed Injet Printer Master Controller

Because of its low price、small size、low noise,inkjet printer has become the first preferred solution both at home and in office. But with the advent of big data, the demand for print speed is more and more urgent, and the ubiquitous smart devices make people less and less dependent on PCs. So developing a high-speed printer that can print document via portable devices is necessary.Based on the analysis of the inkjet printer workflow, this paper proposed the solution about how to increase print speed and improve print quality, and conducted feasibility from the principle. Then based on the project requirements and the experience about design LED printer give the overall design of high-speed inkjet printer. This paper focused on the design and implementation about high-speed inkjet printer master, main works are:1,Analysis stage:accurately calculated the request of the data transfer speed between the high-speed inkjet printer master and head drive board, and ensured to meet the requirements of high-speed printing through USB2.0 interface.2,Program design stage:proposed the design of master controller that employs the pattern of core board plus base board. Core board chooses the product produced by Feiling that uses the AM3354 processor as the control core; base board needs to be designed independently, mainly including LCD display touch interface providing human-computer interaction, network interface,USB interface and SD card interface all providing exterior information transmission channel, and lastly, GPMC (universal storage controllers) bus interface providing internal information transmission channel. This not only meets the high-speed of printing for data processing and transmission requirements, but also can be printed through a variety of channels.3,Hardware implementation stage:processed analysis,chip selection,schematic design on every module, finally built a master of hardware platforms through board layout and soldering.4,Platform migration stage:successfully transplanted UBoot.Completed multi-serial driver, GPMC driver, PWM driver, GPIO driver development, achieved the LCD display through the migration of the underlying LCD display driver from the Linux platform,and solved the problems that the device can’t be recognized by USB host port after hot-swappable. 5,Testing stage:verified that master controller can work properly. Verified network, RTC function by UBoot platform command,verified the communication of GPMC interface by SDRAM that FPGA simulated, verified SD card interface, USB host port communications by migration FAT32 file system, verified LCD display function by displaying BMP images, verified the multiport serial, RTC, GPIO, PWM function. After completion of the work, a working master hardware system will be erected with a high-speed inkjet printers that can meet the performance requirements.Through the design and implementation of high-speed inkjet printer master, as well as functional testing and performance testing, the feasibility of the program is verified. Hoping to provide a certain reference value to develop similar technology and research.