A thermal printer and method
AssigneeDover Europe SàRl
InventorJonas Södergård
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Abstract
The disclosure relates to a thermal printer for printing on a print media, comprising: a printhead (110, 110′, 110″), a printhead positioning arrangement (120) for displacing the printhead, a ribbon feeding arrangement comprising a print ribbon unwinder (150) and a ribbon rewinder (151), at least one roller (162). In operation, the printhead positioning arrangement is configured to displace the printhead into at least three positions: a first position applying a first amount of pressure on a print media, a second position applying a second amount of pressure on the print media, and a third position in which the printhead is distanced from the print media and applies no pressure on the print media.
Claims22
A thermal printer for printing on a print media, comprising:
- a printhead (110, 110′, 110″),
- a printhead positioning arrangement (120) for displacing the printhead,
- a ribbon feeding arrangement comprising a print ribbon unwinder (150) and a ribbon rewinder (151),
- at least one roller (162), and
- wherein, in operation, the printhead positioning arrangement is configured to displace the printhead into at least three positions:
- a first position applying a first amount of pressure on a print media, a second position applying a second amount of pressure on the print media, and a third position in which the printhead is distanced from the print media and applies no pressure on the print media.
The thermal printer according to any of previous claims, further comprising a print media senor, the print media sensor comprising at least first and a second part:
- the first part being configured as a transmitter for transmitting an electromagnetic signal and the second part being configured as a receiver for receiving the electromagnetic signal, and wherein the first and the second parts are arranged such that they form vertexes of a substantially right triangle and the electromagnetic signal path a hypotenuse side of the triangle side.
In a thermal printer, a method for controlling position of a printhead (110, 110′, 110″), the thermal printer comprising:
- a printhead positioning arrangement (120) for displacing the printhead,
- a print ribbon feeding arrangement comprising a ribbon unwinder (150) and a ribbon rewinder (151),
- at least one roller (162), and
- the method comprising:
- displacing the printhead into at least three positions:
- a first position applying a first amount of pressure on a print media between the printhead and the roller during a print operation;
- a second position applying a second amount of pressure on the print media when no print operation is executed,
- a third position in which the printhead is distanced from the print media and applies no pressure on the print media.
Dependencies are inferred from the claim text.