printer is not rearto print

打印机总是显示printer is not ready to print printer selelted is not valid printer sejected is not vajid printer selected is not valid怎么办 Your printer is not the same as mine. (同义句) Your printer _ _ Your printer is not the same as mine同义句 打印PDF格式的文件后出现这个报警,如何解决Unable to start print job,Is printer a All news is not fit to print这句话是什么意思? protel99se 打开原理图时出现Printer selected is not valid咋回事? there was an error writing to printer the printe is not read protel99se 打开原理图时出现Printer selected is not valid咋回事?怎样才能正常使用 printer