Printing apparatus
First Claim
Patent Images
1. A printing apparatus comprising:
- a pulse motor which operates to carry a recording medium;
a thermal head which prints on the recording medium;
a pulse motor control unit which controls the pulse motor so that the pulse motor is operated at a carrying velocity based on a print ratio of input print data;
a head control unit which controls the thermal head in a first or second head control mode;
a head detection unit which detects whether the thermal head attached in the printing apparatus is a first thermal head having a first resolution or a second thermal head having a second resolution; and
a judgment unit which judges whether to control the thermal head by the first head control mode or the second head control mode according to the thermal head detected by the head detection unit being the first thermal head having the first resolution or the second thermal head having the second resolution.
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Abstract
A printing apparatus includes a pulse motor which operates to carry a recording medium, a thermal head to print on the recording medium, a pulse motor control unit which controls the pulse motor so that the pulse motor is operated at a carrying velocity based on a print ratio of input print data, a head control unit which controls the thermal head in a first or second head control mode, a head detection unit which detects the type of thermal head attached in the printing apparatus and a judgment unit which judges on the basis of the type of head detected by the head detection unit whether to control the thermal head by the first head control mode or the second head control mode.
6 Citations
5 Claims
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1. A printing apparatus comprising:
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a pulse motor which operates to carry a recording medium; a thermal head which prints on the recording medium; a pulse motor control unit which controls the pulse motor so that the pulse motor is operated at a carrying velocity based on a print ratio of input print data; a head control unit which controls the thermal head in a first or second head control mode; a head detection unit which detects whether the thermal head attached in the printing apparatus is a first thermal head having a first resolution or a second thermal head having a second resolution; and a judgment unit which judges whether to control the thermal head by the first head control mode or the second head control mode according to the thermal head detected by the head detection unit being the first thermal head having the first resolution or the second thermal head having the second resolution. - View Dependent Claims (2, 3, 5)
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4. A method of controlling a printing apparatus equipped with a pulse motor used to carry a recording medium and with a thermal head which prints on the recording medium, the method comprising:
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controlling the pulse motor so that the pulse motor is operated at a carrying velocity based on a print ratio of input print data; detecting whether the thermal head attached in the printing apparatus is a first thermal head having a first resolution or a second thermal head having a second resolution; and judging whether to control the thermal head by a first head control mode or a second head control mode according to the detecting result, the first head control mode being adapted to control the thermal head so that the thermal head performs printing one time while the pulse motor is operated one step, the second head control mode being adapted to control the thermal head so that the thermal head performs printing two times while the pulse motor is operated three steps.
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Specification