| 摘要 |
PURPOSE:To perform double-height character printing with simple constitution and to lighten the processing load on a host side equipment, by interposing a double-size print data generating circuit between a picture element memory and a printer print data register. CONSTITUTION:The double-size print data generating circuit 207 is interposed on a data transfer line between the picture-element memory 204 and printer print data register 206. This double-size print data generating circuit 207 enlarges picture element data in read longitudinal dot strings into a double-height dot character pattern with regard to only picture data within a range specified by the double-height print table in a main memory 201 among picture-element data read out of the picture-element data 204, and divides them into two upper and lower double-size dot strings, which are set in the printer print data register 206. |
