Rewritable recording apparatus

Details Rewritable recording apparatus Rewritable recording apparatus

1992-03-27

1996-09-10

Tran, Huan H.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Having driving circuitry for recording means

B41J 2325

Patent

active

055550100

ABSTRACT:
A thermal recording medium is provided for recording dot thereon by an opaque state thereof when applied with thermal recording energy and for erasing dot therefrom by a transparent state when applied with thermal erasing energy. The thermal energy is supplied from a thermal head to the recording medium as multiple pulses in a one-dot forming period. Heat generated from the thermal head is controlled by an activation pulse computing section to gradually increase the recording energy and erasing energy to be applied to the recording medium to provide a gentle change in the temperature rise of the recording medium, thereby reducing the temperature change per unit time and ensuring finer control, thus accomplishing stable information recording and erasing.

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