Printing apparatus for printing same size ruled line without regard to print pitch selection

Printing apparatus comprising:

• means for supporting a print medium;
• a carriage movable along a print line;
• a selecting means for selecting one of a plurality of print pitches;
• a carriage drive means for moving the carriage at a print pitch selected by said selecting means along said print line;
• unit line printing means mounted on the carriage for printing a line on said print medium by printing plural unit lines;
• and
• a control means for positioning the carriage at locations spaced by a distance one half a maximum pitch selectable by said selecting means when ends of the line are being printed by said unit line printing means irrespective of the pitch selected by said selecting means.

A printing apparatus comprising:

• an input means for inputting horizontal ruled line data;
• a memory means for storing said ruled line data;
• a printing means movable along a print line for printing a ruled line according to the ruled line data;
• a moving means for moving said printing means along said print line at a plurality of selectable pitches;
• a control means for reading said stored ruled line data and for controlling said printing means to print a ruled line according to said stored ruled line data;
• and
• said control means including means for positioning said printing means at locations spaced by one half the length of the maximum selectable print pitch from each end of the ruled line corresponding to said ruled line data in said memory means, irrespective of the print pitch selected.