| 摘要 |
PURPOSE:To designate a printing region to be actually printed in data received by a printer. CONSTITUTION:A printing region register 7 storing the number of columns which is designated by means of a printing region designation command from an upper device is provided. After a control section 2 reads data from a receiving buffer 3, it compares contents of an index register 8 with that of the print region register 7. When the contents of the index register 8 is not greater than that of the print region register 7, the control section reads a required font from a ROM 4 and develops it in an image buffer 5 and when the contents is greater, the control section throws the data away not to operate it so that only the print data in a printing region designated by the command is printed. |
