爱普生B-T500系列票据打印机驱动程序的研究

Research of bill printer driver program based on Epson B-T500

票据打印机在银行、证券、保险、商务、运输以及税务等行业有着广泛的应用,但是基于NT内核的操作系统利用并口对票据打印机进行操作时,票据打印机只能执行主机所发出的命令而不能将结果信息返回给主机,这是由Windows NT操作系统对I/O端口的严格限制产生的,增加了开发票据打印机驱动程序的难度.因此提出了两种解决此类问题的方案,而且利用本方案在Windows2000 server下成功地开发了爱普生B-T500系列票据打印机驱动程序,并分析了两种方案的优点和缺点.

Bill printer is extensively used in the bank, securities, insurance, commercial affair, transportation and tax, etc. When operating system based on NT kernel utilize parallel port to operate bill printer, bill printer can only execute host-computer＇ s order but can＇ t return message to the host computer. This phenomenon is produced by the strictly restraint of Windows NT operating system to I/O port, and it makes the development of bill printer driver more difficult- In this paper we propose two methods to salve this kind of problem and both of them can be used to develop the Epson B-T500 bill printer driver program successfully in the Windows 2000 server. Finally, we compare advantages and disadvantages of the two schemes.