| 摘要 |
PURPOSE:To obtain the record which is readily judged and read by imparting difference in density to the coloring of heat sensitive recording paper. CONSTITUTION:An input signal bit pattern is digitally converted in a signal converting part 1. A scale bit pattern is formed by a scale generating part 2, and a signal, which judges the scale bits, is added in a judging signal adding part 3. Both patterns are combined in a record control part 4, and a record bit pattern is outputted. A pulse control part 5 reduces the pulse time width of each bit of the scale signal and enlarges the pulse time width of each bit of the input signal. The results are outputted. A heating condition is differentiated in respose to said pulse time width by a head driver 6, and the heating element of the bit of the multiple thermal head 7 corresponding to each signal is driven. Thus, the difference in density can be imparted to the coloring of the heat sensitive recording paper. |
