Thermal transfer type color printer
First Claim
1. A color printer, comprising:
- a platen roller;
a recording head means to be brought into contact with said platen roller to record an image having at least two colors on a recording sheet interposed between said recording head means and said platen roller, said two colors being successively printed on a surface of said recording sheet with said recording sheet being operated to reciprocate with respect to a recording position on said platen roller;
clamping means provided at a downstream side of said recording head means in a sheet travelling path from a supply section of said recording sheet to a discharging section of said recording sheet for holding said recording sheet when recording said image, said clamping means being fixed with respect to said recording position so that a distance between a holding position of said recording sheet taken by said clamping means and said recording position on said platen roller is always constant during the image recording.
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Accused Products
Abstract
A color printer for recording an image having at least two colors on a recording sheet with a recording head being brought into contact with a platen roller in a state that the recording sheet is interposed therebetween, the two colors being successively printed on a surface of the recording sheet with the recording sheet being operated to reciprocate with respect to a recording position on the platen roller. The printer includes a clamping device provided at a downstream side of the recording head in a sheet-travelling path from a supply section of the recording sheet to a discharging section of the recording sheet for holding the recording sheet when recording the image. The clamping device is fixed with respect to the recording position so that a distance between a holding position of the recording sheet taken by the clamping device and the recording position on the platen roller is always constant during the image recording. This arrangement can make easy the positioning of the recording sheet in the recording process to provide a high-quality image on the recording sheet. Also included is a reversing device provided at an upstream side of the recording head in the sheet-travelling path for moving the recording sheet toward an upstream side in the sheet-travelling path before the image recording. Thus, it is possible to remove the looseness of the recording sheet between the clamping device and the platen roller.
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Citations
11 Claims
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1. A color printer, comprising:
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a platen roller; a recording head means to be brought into contact with said platen roller to record an image having at least two colors on a recording sheet interposed between said recording head means and said platen roller, said two colors being successively printed on a surface of said recording sheet with said recording sheet being operated to reciprocate with respect to a recording position on said platen roller; clamping means provided at a downstream side of said recording head means in a sheet travelling path from a supply section of said recording sheet to a discharging section of said recording sheet for holding said recording sheet when recording said image, said clamping means being fixed with respect to said recording position so that a distance between a holding position of said recording sheet taken by said clamping means and said recording position on said platen roller is always constant during the image recording. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A color printer, comprising:
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a platen roller; a recording head means to be brought into contact with said platen roller to record an image having at least two colors on a recording sheet interposed between said recording head means and said platen roller, said two colors being successively printed on a surface of said recording sheet with said recording sheet being operated to reciprocate with respect to a recording position on said platen roller; clamping means provided at a downstream side of said recording head means in a sheet travelling path from a supply section of said recording sheet to a discharging section of said recording sheet for continuously clamping a leading edge of said recording sheet against a reciprocating movement of said recording sheet until successive printing operations of plural colors of said image are completely finished, said clamping means being fixed with respect to said recording position so that a distance between a clamping position of said recording sheet taken by said clamping means and said recording position on said platen roller is always constant during the image recording.
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Specification