Thermal recording apparatus

Details Thermal recording apparatus Thermal recording apparatus

1998-08-27

1999-10-05

Burr, Edgar

Typewriting machines

Typing by other than type-face or type-die

Thermal

346 76, 346 11, B41J 2315

Patent

active

059612274

ABSTRACT:
The number of pulses N corresponding to the gradation level of a print dot is read out from a table and stored in a counter 63 (S1). The first pulse is applied to the heating elements for the duration T.sub.1 (S4) and is stopped for the duration T.sub.off (S6). The number of pulses N is read out and restored in the counter after the subtraction of 1 therefrom (S7). The second pulse is applied for the duration T.sub.2 (S9) and then interrupted for the duration T.sub.off (S11). The number of pulses N is read out and, after 1 subtracted therefrom, is restored (S12). If the number of pulses N read out is not zero, the step for the application of pulses for the duration T.sub.2 (S9) and subsequent steps are repeated. If the number of pulses N is zero, the application of pulses is terminated (S13).

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patent: 5533816 (1996-07-01), Ikeda et al.
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