基于G4的微型热敏打印机的设计与实现方案,全速打印速度约为25行汉字/秒。本系统由G4芯片(基于ARM7TDMI),LTPZ245B热敏打印头,打印头过热保护电路,打印头加热电路,打印头温测电路,步进电机驱动电路,缺纸检测电路以及控制软件等组成,本文介绍了热敏打印原理并给出本方案的硬件设计电路以及软件设计流程。 G4-based design and implementation of micro-thermal printer program, full speed print speed of about 25 lines Chinese characters / second. The system consists of G4 chip (based on ARM7TDMI), LTPZ245B thermal print head, print head thermal protection circuit, print head heating circuit, print head temperature measurement circuit, stepper motor drive circuit, out of paper detection circuit and control software. Introduced the principle of thermal printing and gives the program of hardware design and software design flow.