Typewriting machines – Typing by other than type-face or type-die – Thermal
Patent
1997-11-24
2000-06-20
Hilten, John S.
Typewriting machines
Typing by other than type-face or type-die
Thermal
40012014, B41J 2315
Patent
active
060769815
ABSTRACT:
There are provided a printing apparatus and a method of making a mask pattern for exposure by the use of the printing apparatus. A temperature of a thermal head is detected, and a plurality of split pulses formed by dividing a strobe pulse applied to the thermal head are sequentially applied with quiescent periods interposed therebetween. There is stored in advance pulse-applying data of settings of a cumulative period of pulse-applying periods over which the plurality of split pulses are respectively applied, a number of the split pulses, the split pulse-applying periods, and the quiescent periods, defined in a manner corresponding to values of the temperature of the thermal head. Appropriate pulse-applying data is read out according to the temperature detected, and application of the split pulses is controlled according to the appropriate pulse-applying data. In another form, the split pulses are controlled in a manner such that the cumulative period of the split pulse-applying periods is sufficient for a time period over which the strobe pulse is required to be applied.
REFERENCES:
patent: 5741079 (1998-04-01), Hayama et al.
Hayama Hitoshi
Kameda Takanobu
Shimmura Tomoyuki
Watanabe Kenji
Yanagisawa Yoshiyuki
Hilten John S.
King Jim Co. Ltd.
Nguyen Anthony H.
Seiko Epson Corporation
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