| 摘要 |
PURPOSE:To make the life of printing wires uniform and maintain high printing quality by zigzag arranging plural printing wires in two lines, carrying out low density printing with one of the lines in the forward move of a carriage and carrying out low density printing with the other line in the backward move of the carriage. CONSTITUTION:A driving circuit 25 drives printing wires 1... and 2... in a printing head 11 corresponding to picture element signals supplied from the first and second character signal generators 22 and 23. When printing Kanji, all the printing wires 1... 2... in the printing head 11 are used, and when printing alphanumerics, since this is low density printing, the second line printing wires 2... are used in the forward move of a carriage 13 and the first line printing wires 1... are used in the backward move of the carriage 13. |
