Color Printer and Method for Controlling Heat Pulse of Color Printer
AssigneeBrother Kogyo Kabushiki Kaisha
InventorKeisuke Nishihara
Life of this patent
Estimating the term…
Abstract
When a color development heat pulse set for each one dot of an intended image is applied to a coloring heat element associated with the one dot of the intended image in a thermal head, an auxiliary heat pulse set for development of the intended image at a thermosensitive medium is applied to a non-printing heat element that adjoins to the coloring heat element associated with the one dot of the intended image with reference to a scanning direction of the thermal head, the auxiliary heat pulse being not so hot for color development at the color thermo sensitive medium.
Claims14
A color printer which is configured to perform color print by getting a color thermosensitive medium through a thermal head which consists of plural heat elements only once for color development at the color thermosensitive medium,
- wherein the color thermosensitive medium includes a base material and two or more of coloring layers laminated on the base material so that a topmost one of the coloring layers is put closest and the base material is put farthest with reference to the thermal head when the color thermo sensitive medium is conveyed for multicolor print,
- wherein color development temperature is different by each of the two or more of coloring layers laminated on the base material,
- wherein, as lamination position gets closer to the base material among the two or more of coloring layers, color development temperature of a coloring layer at the lamination position is set lower and heat duration required for color development of a coloring layer at the lamination position is set longer,
- wherein, when getting color development at the color thermosensitive medium, all the plural heat elements of the thermal head are distinguished between coloring heat elements for performing color development at the color thermosensitive medium and non-printing heat elements for withholding color development at the color thermosensitive medium, and
- wherein, when a color development heat pulse set for each one dot of an intended image is applied to a coloring heat element associated with the one dot of the intended image in the thermal head, an auxiliary heat pulse set for development of the intended image at the color thermosensitive medium is applied to a non-printing heat element that adjoins to the coloring heat element associated with the one dot of the intended image with reference to a scanning direction of the thermal head.
A method for controlling heat pulse of a color printer which is configured to perform color print by getting a color thermosensitive medium through a thermal head which consists of plural heat elements only once for color development at the color thermosensitive medium,
- wherein the color thermosensitive medium includes a base material and two or more of coloring layers laminated on the base material so that a topmost one of the coloring layers is put closest and the base material is put farthest with reference to the thermal head when the color thermo sensitive medium is conveyed for multicolor print,
- wherein color development temperature is different by each of the two or more of coloring layers laminated on the base material,
- wherein, as lamination position gets closer to the base material among the two or more of coloring layers, color development temperature of a coloring layer at the lamination position is set lower and heat duration required for color development of a coloring layer at the lamination position is set longer,
- wherein, when getting color development at the color thermosensitive medium, all the plural heat elements of the thermal head are distinguished between coloring heat elements for performing color development at the color thermosensitive medium and non-printing heat elements for withholding color development at the color thermosensitive medium, and
- wherein, when a color development heat pulse set for each one dot of an intended image is applied to a coloring heat element associated with the one dot of the intended image in the thermal head, an auxiliary heat pulse set for development of the intended image at the color thermosensitive medium is applied to a non-printing heat element that adjoins to the coloring heat element associated with the one dot of the intended image with reference to a scanning direction of the thermal head.
Dependencies are inferred from the claim text.