| 摘要 |
PURPOSE:To sharply form the protruding and recessed parts of a three- dimensional image by converting the logic of the bit immediately before an aimed bit to the same logic as the aimed when the logic from the bit immediately before the aimed bit to a bit of a rank higher by a predetermined number is continuously inverse logic. CONSTITUTION:A series of logical bits are constituted of five bits and the positions of bits are shown by 'N-2, N-1, N, N+1, N+2' and an aimed bit for carrying out sharp printing is set to 'N+1'. The bit patterns of a series of logical bits are 32(=2<5>) kinds and the bit pattern in the case of an original picture pattern corresponds to No 30. In No 30, the bits of the bit positions 'N-1, N, N+1, N+2' are '0010'. A heat generating bit control part 1b converts the bit at the bit position N immediately before the aimed bit 'N+1' from '0' to '1' to drive a dot-like heating element 6 from a dot data generating part 1a. Bits become '00110' and, since the foaming corresponding to two bits is performed, a cross-sectional shape becomes wide and high and the protruding parts of a three-dimensional image are sharply formed. |
