Typewriting machines – Typing by other than type-face or type-die – Thermal
Patent
1985-06-18
1987-03-24
Burr, Edgar S.
Typewriting machines
Typing by other than type-face or type-die
Thermal
346 76PH, 219216, 219494, B41J 320, G01D 1510
Patent
active
046521550
ABSTRACT:
In a serial thermal transfer printer or serial thermal printer comprising; a thermal head having a plurality of heat elements arrayed in a line; and means for selectively energizing and driving the plurality of heat elements in synchronous relation with the relative movement between the thermal head and the ink ribbon or heat sensitive paper, wherein when printing dots are successively positioned in the direction of the relative movement between the thermal head and the ink ribbon or heat sensitive paper, printing timing of the last dot is set ahead so as to be earlier than normal printing timing. When the previous printing data is "1" (recording) and the subsequent printing data is "0" (not recording), the position of the present printed dot is shifted toward the previous printed dot to compress the entire width in case of two or more successive dots. Since the printing head is traveling continuously during printing, the position of the present printed dot can be shifted toward the previous printed dot by advancing the printing timing. If the previous printing data is "0" and subsequent printing data is "1", it is apparent that a similar effect can be obtained by setting the printing timing backward so as to shift the position of the present printed dot toward the subsequent printed dot.
REFERENCES:
patent: 4456392 (1984-06-01), Nozaki et al.
patent: 4464669 (1984-08-01), Sekiya et al.
patent: 4558328 (1985-12-01), Takanashi et al.
patent: 4574293 (1986-03-01), Inui et al.
Fukasawa Nobuaki
Hakoyama Akiyoshi
Sasaki Akira
Burr Edgar S.
Hitachi , Ltd.
McDaniel James R.
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