Pressure-sensitive and heat-sensitive image transfer apparatus for recording

• US 6,109,800 A
• Filed: 01/12/1999
• Issued: 08/29/2000
• Est. Priority Date: 01/13/1998
• Status: Expired due to Fees

• Current Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
• Original Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
• Inventors: Saito, Hiroyuki, Suzuki, Minoru, Suzuki, Katsuyoshi, Furusawa, Koichi, Orita, Hiroshi
• Primary Examiner(s): Yan, Ren
• Assistant Examiner(s): COLILLA, DANIEL JAMES
• Application Number:
  US09/228,974
• Time in Patent Office: 595 Days
• Field of Search: 347/212, 347/172, 347/173, 400/241.2, 400/120.01, 400/120.02, 400/120.04, 428/321.5
• US Class Current: 400/120.02
• CPC Class Codes: B41J 2/005 characterised by bringing liquid or particles selectively into contact with a printing material printing by selective application of impact or pressure on a printing or impression-transfer material B41J2/22
• CPC Class Codes: B41M 5/165 characterised by the use of microcapsules; Special solvents for incorporating the ingredients
• CPC Class Codes: B41M 5/287 using microcapsules or microspheres only
• CPC Class Codes: Y10T 428/249997 Encapsulated liquid

Abstract

A pressure-sensitive and heat-sensitive recording apparatus has a pre-coating container that pre-coats a recording sheet prior to a printing operation on the recording sheet. The pre-coating material container, ribbon cassette and an over-coating material container are provided in a recording head, while being movable in a printing direction lead by the pre-coating material container. The printed color-image is protected by an over-coating material dispensed from the trailing over-coating material container.

Claims

1. An image transfer apparatus that records an image through selective heat and pressure application, comprising:

an ink transfer unit that includes a layer of micro-capsules containing dye, each micro-capsule disposed in said layer of micro-capsules exhibiting a temperature/pressure characteristic such that, when said each micro-capsule is squashed under a corresponding predetermined pressure at a corresponding predetermined temperature, said dye seeps from said squashed micro-capsule and transfers to a surface of a recording sheet, each micro-capsule having a shell wall comprising a shape memory resin exhibiting a glass-transition temperature corresponding to said corresponding predetermined temperature, and said shape memory resin of said shell wall comprising a predetermined thickness;

a pressure application unit that locally applies said corresponding predetermined pressure to said micro-capsule layer;

a heat application unit that selectively and locally heats said micro-capsule layer to said corresponding predetermined temperature; and

a pre-coating unit that pre-coats a material on said surface of said sheet prior to said transfer of said dye,

wherein a degree of roughness of said surface of said recording sheet is diminished due to said material such that said transferred dye is accurately fixed to said surface as said image.

2. The image transfer apparatus of claim 1, further comprising:

an ink transfer storage unit that stores said ink transfer unit; and

a holder that holds said ink transfer storage unit and said pre-coating unit.

3. The image transfer apparatus of claim 1, further comprising:

an ink transfer storage unit that stores said ink transfer unit and said pre-coating unit; and

a holder that holds said ink transfer storage unit.

4. The image transfer apparatus of claim 1, wherein said pre-coating material is a liquid.

5. The image transfer apparatus of claim 1, wherein said pre-coating material is a film fixable to said surface of said recording sheet.

6. The image transfer apparatus of claim 1, further comprising:

an over-coating unit that over-coats a material on said surface of said recording sheet subsequent to said transfer of said dye,

wherein said transferred dye is permanently fixed and protected on said surface.

7. The image transfer apparatus of claim 6, wherein said over-coating material protects said transferred dye against at least one of damaging electromagnetic radiation, oxidation.

8. An image transfer apparatus that records an image through selective heat and pressure application, comprising:

a conveyor unit that intermittantly moves a recording sheet in a transport direction;

a recording head that records said image line by line on a surface of said recording sheet by moving in a recording direction substantially perpendicular to said transport direction, said recording head including;

an ink-transfer ribbon that comprises a base member and a layer of micro-capsules, coated over said base member, that contains a plurality of micro-capsules filled with dye, each micro-capsule of said plurality of micro-capsules exhibits a temperature/pressure characteristic such that, when said each micro-capsule is squashed under a corresponding predetermined pressure at a corresponding predetermined temperature, said dye discharges from said squashed micro-capsule and transfers to said surface of said recording sheet;

a temperature application unit that selectively and locally heats said layer of micro-capsules to said corresponding predetermined temperature;

a pressure application unit that locally applies said corresponding predetermined pressure to said layer of micro-capsules; and

a pre-coating material container, positioned downstream of said ink-transfer ribbon in said recording direction, that pre-coats a material on said surface of said recording sheet prior to said discharge of said dye,

wherein a degree of roughness of said surface of said recording sheet is diminished due to said material such that said transferred dye is accurately fixed to said surface as said image.

9. The image transfer apparatus of claim 8, further comprising an over-coating material container, positioned upstream of said ink-transfer ribbon in said recording direction, that over-coats a material on said surface of said recording sheet subsequent to said transfer of said dye, such that said transferred dye is permanently fixed and protected on said surface.

10. The image transfer apparatus of claim 8, wherein said recording head reciprocally records said image line by line on said surface of said recording sheet by alternately moving in said recording direction prior to said intermittant movement and opposite said recording direction subsequent to said intermittent movement.

11. An image transfer apparatus that records an image through selective heat and pressure application, comprising:

an ink transfer unit that includes a layer of micro-capsules containing dye, each micro-capsule disposed in said layer of micro-capsules exhibiting a temperature/pressure characteristic such that, when said each micro-capsule is squashed under a corresponding predetermined pressure at a corresponding predetermined temperature, said dye seeps from said squashed micro-capsule and transfers to a surface of a recording sheet;

a pressure and heat application unit that applies localized said corresponding predetermined pressure and selectivity localized predetermined heat to said micro-capsule layer, said predetermined heat including heating to said corresponding predetermined temperature; and

a pre-coating unit that pre-coats a material on said surface of said recording sheet line by line prior to said transfer of said seeped dye,

wherein a degree of roughness of said surface of said recording sheet is diminished due to said material such that said transferred dye is accurately fixed to said surface as said image.

12. An image transfer apparatus that records an image through selective heat and pressure application, comprising:

an ink transfer unit that includes a layer of a plurality of types of micro-capsules containing dye, one said type of micro-capsules filled with a dye having a different color than a dye color of another of said type of micro-capsules, said one type of micro-capsule exhibiting a first temperature/pressure characteristic such that, when said one type of micro-capsule is squashed under a first corresponding predetermined pressure at a first corresponding predetermined temperature, said dye seeps from said squashed said one type of micro-capsule and transfers to a surface of a recording sheet, said another type of micro-capsule exhibiting a second temperature/pressure characteristic such that, when said another type of micro-capsule is squashed under a second corresponding predetermined pressure at a second corresponding predetermined temperature, said dye seeps from said squashed said another type of micro-capsule and transfers to the surface of the recording sheet, wherein said first temperature/pressure characteristic is different from said second temperature/pressure characteristic;

a pressure application unit that selectively and locally applies said first and second corresponding predetermined pressures to said micro-capsule layer;

a heat application unit that selectively and locally heats said micro-capsule layer to said first and second corresponding predetermined temperature; and

a pre-coating unit that pre-coats a material on said surface of said sheet prior to said transfer of said dye,

wherein a degree of roughness of said surface of said recording sheet is diminished due to said material such that said transferred dye is accurately fixed to said surface as said image.

13. The image transfer apparatus of claim 12, wherein:

a shell wall of said one type of micro-capsule is composed of a first shape memory resin exhibiting a glass-transition temperature corresponding to said first corresponding predetermined temperature, and said shape memory resin of said shell wall of said one type of micro-capsule comprises a first predetermined thickness; and

a shell wall of said another type of micro-capsule is composed of a second shape memory resin exhibiting a glass-transition temperature corresponding to said second corresponding predetermined temperature, and said second shape memory resin of said shell wall of said another type of micro-capsule comprises a second predetermined thickness.

14. The image transfer apparatus of claim 12, further comprising:

an ink transfer storage unit that stores said ink transfer unit; and

a holder that holds said ink transfer storage unit and said pre-coating unit.

15. The image transfer apparatus of claim 12, further comprising:

an ink transfer storage unit that stores said ink transfer unit and said pre-coating unit; and

a holder that holds said ink transfer storage unit.

16. The image transfer apparatus of claim 12, wherein said pre-coating material is a liquid.

17. The image transfer apparatus of claim 12, wherein said pre-coating material is a film fixable to said surface of said recording sheet.

18. The image transfer apparatus of claim 12, further comprising:

an over-coating unit that over-coats a material on said surface of said recording sheet subsequent to said transfer of said dye,

wherein said transferred dye is permanently fixed and protected on said surface.

19. The image transfer apparatus of claim 18, wherein said over-coating material protects said transferred dye against at least one of damaging electromagnetic radiation and oxidation.