IMPACT LINE PRINTER HAVING GRAPHICS PLOTTING CAPABILITY

摘要

An impact line printer of the type forming alphanumeric characters by printing dots at selected dot positions within a dot matrix is provided with means for selecting a graphics plotting mode of operation. Either the printing mode or the graphics plotting mode of operation is selected on a characterby-character basis. The dot matrix within which alphanumeric characters are printed in the printing mode of operation is expanded, when the graphics plotting mode of operation is selected, to include additional dot positions at which dots may be printed to significantly increase dot resolution.