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US 6,320,604 B1Granted
Multi power type thermal head
AssigneeTDK Corporation
InventorsBunji Moriya, Shinichiro Hayashi, Kazuhito Uchida
Life of this patent
Estimating the term…
Abstract
A multi power type thermal head which has a heating element for producing heat with different energies, an added resistor being connected to the heating element, first switch element for controlling the heating element in an operation state or a nonoperational state, and second switch element for controlling the heating element and the added resistor in an operation state or a nonoperational state. To control the thermal head in a first energy state, heating the heating element is controlled by the first switching element. To control the thermal head in a second energy state, the heating element and the added resistor are controlled by the second switching element with the heating element and the added resistor connected in series.
Claims8
A multi power type thermal head comprising:
- a heating element for producing heat with different energies;
- an added resistor being connected to said heating element;
- first switch means for controlling said heating element in an operation state or a nonoperational state;
- second switch means for controlling said heating element and said added resistor in an operation state or a nonoperational state;
- first strobe signal input means for causing said first switching means to perform heating control of said heating element corresponding to first energy;
- second strobe signal input means for causing said second switching means to perform heating control of said heating element corresponding to second energy;
- first heating time control means for performing print control with the first energy and controlling heating time of said heating element based on a first strobe signal in response to the presence or absence of print data in a print control range of objective print data;
- and
- second heating time control means for performing print control with the second energy and controlling heating time of said heating element based on a second strobe signal in response to the presence or absence of print data in a print control range of objective print data.
6 more elements
A multi power type thermal head comprising:
- a thin-film resistance layer comprising a heating resistance part formed on a glaze layer provided partially on an insulating substrate and an added resistance part formed on the insulating substrate, the heating resistance part and the added resistance part being formed integrally;
- a first electrode connection part being placed on said thin-film resistance layer and connected to first switching means;
- and
- a second electrode connection part being placed on said thin-film resistance layer and connected to second switching means.
1 more element
A multi power type thermal head comprising:
- a thin-film resistance layer comprising a heating resistance part formed on a glaze layer provided partially on an insulating substrate and an added resistance part formed on the insulating substrate, the heating resistance part and the added resistance part being formed integrally;
- a first electrode connection part being placed on said thin-film resistance layer and connected to first switching means;
- a second electrode connection part being placed on said thin-film resistance layer and connected to second switching means;
- first strobe signal input means for causing the first switching means to perform heating control of the heating resistance part with first energy;
- and
- second strobe signal input means for causing the second switching means to perform heating control of the heating resistance part with second energy, characterized in that
- the heating resistance part and the added resistance part are connected in series and energized based on input of a second strobe signal and the unit heating value of the heating resistance part is smaller than that of heat produced in the heating resistance part based on input of a first strobe signal.
4 more elements
A driving control apparatus for a thermal head comprising:
- a heating element for producing heat with different energies;
- an added resistor being connected to said heating element;
- first switch means for controlling said heating element in an operation state or a nonoperational state;
- second switch means for controlling said heating element and said added resistor in an operation state or a nonoperational state;
- first strobe signal input means for causing said first switching means to perform heating control of said heating element corresponding to first energy;
- second strobe signal input means for causing said second switching means to perform heating control of said heating element corresponding to second energy;
- first heating time control means for performing print control with the first energy and controlling heating time of said heating element based on a first strobe signal in response to the presence or absence of print data in a print control range of objective print data;
- and
- second heating time control means for performing print control with the second energy and controlling heating time of said heating element based on a second strobe signal in response to the presence or absence of print data in a print control range of objective print data.
6 more elements
A thermal head comprising:
- a heating element for producing heat with different energies;
- an added resistor being connected to said heating element;
- first switch means for controlling said heating element in an operation state or a nonoperational state;
- second switch means for controlling said heating element and said added resistor in an operation state or a nonoperational state;
- first strobe signal input means for causing said first switching means to perform heating control of said heating element corresponding to first energy;
- second strobe signal input means for causing said second switching means to perform heating control of said heating element corresponding to second energy;
- first heating time control means for performing print control with the first energy and controlling heating time of said heating element based on a first strobe signal in response to the presence or absence of print data in a print control range of objective print data;
- and
- second heating time control means for performing print control with the second energy and controlling heating time of said heating element based on a second strobe signal in response to the presence or absence of print data in a print control range of objective print data.
6 more elements
Dependencies are inferred from the claim text.