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US 4,541,042 AGranted
Transfer recording method and apparatus therefor
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorTadao Kohashi
Life of this patent
Estimating the term…
Abstract
Transfer recording is carried out by driving in press-contacting a recording medium, e.g. a paper and a recording material sheet such as an ink transfer sheet, in a gap between a platen and a thermal head, and improvement is to apply a solvent, e.g. of liquid state and having volatility, on said paper, thereby high speed thermodissolving transfer is made by heat of said heated points, and recording with continuous gradation is obtainable.
Claims25
Transfer recording method comprising the steps of:
- driving a recording medium in a predetermined direction,
- driving a recording material sheet, which comprises a base film and a recording material layer coated on one face of said base film, in substantially the same direction as that of said recording medium, in a state that the surface of said recording material layer is press-contacting to a face of said recording medium at least at a region whereon recording is to be made,
- applying a solvent in liquid state on at least one of said recording material layer and said recording medium, prior to said press-contacting of said surface of recording material layer to said face of said recording medium, said solvent having a lower melting point than a melting-transfer temperature of said recording material layer and such a solubility characteristic as to dissolve at least one component of said recording material, said solubility characteristic being that solubility increases as temperature rises,
- heating selected points of said recording material layer to a predetermined temperature thereby thermo-dissolving said selected points of said recording material layer by said solvent which is of or is made to liquid state,
- thereby selectively transferring thermo-dissolved selected points of said recording material layer onto said face of said recording medium, during a period of said heating to said predetermined temperature.
2 more elements
A transfer recording apparatus comprising:
- first driving means for driving a recording medium in a predetermined direction,
- second driving means for driving a recording material sheet comprising a recording material layer coated on one face of a base film in substantially the same direction as that of said recording medium,
- press-contacting and peeling off means for press-contacting recording material layer onto a face of said recording medium at least at a region whereon recording is to be made and subsequently peeling off the recording material from said face of said recording medium,
- solvent application means for applying a solvent on at least one of said recording material layer and said recording medium prior to said press-contacting, said solvent having a lower melting point than a melting-transfer temperature of said recording material layer and such a solubility characteristic as to dissolve at least one component of said recording material, said solubility characteristic being that solubility increases as temperature rises, and
- heating means for heating selected points of said recording material layer to a predetermined temperature thereby thermo-dissolving said selected points of said recording material layer by said solvent which is in liquid state, thereby to selectively transferring thermo-dissolved selected points of said recording material layer onto said face of said recording medium, during a period of said heating to said predetermined temperature.
2 more elements
A transfer recording apparatus comprising:
- first driving means for driving a recording medium in a predetermined direction,
- second driving means for driving a recording material sheet comprising a recording material layer coated on one face of a base film in substantially the same direction as that of said recording medium,
- press-contacting and peeling off means for press-contacting recording material layer onto a face of said recording medium at least at a region whereon recording is to be made and subsequently peeling off the recording material from said face of said recording medium,
- solvent application means for applying a solvent on at least one of said recording material layer and said recording medium prior to said press-contacting, said solvent being in solid state in room temperature and having such mutual dissolving characteristic with said recording material that amount of said mutual dissolving increases as temperature rises, and
- heating means for heating selected points of said recording material layer from the back side of and through said base film to a predetermined temperature thereby generating mutual-dissolving of said selected points of said recording material layer, which is contact-pressed at said press-contacting and peeling off means together with said recording medium, by said solvent, which is melted to liquid state prior to said contact pressing, thereby to selectively transferring mutual-dissolved selected points of said recording material layer onto said face of said recording medium, during a period of said heating to said predetermined temperature.
2 more elements
Dependencies are inferred from the claim text.