WO1989000109A2 - Thermal printing method and system - Google Patents
Thermal printing method and system Download PDFInfo
- Publication number
- WO1989000109A2 WO1989000109A2 PCT/US1988/002230 US8802230W WO8900109A2 WO 1989000109 A2 WO1989000109 A2 WO 1989000109A2 US 8802230 W US8802230 W US 8802230W WO 8900109 A2 WO8900109 A2 WO 8900109A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- medium
- coating
- copy
- substrate
- images
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000007651 thermal printing Methods 0.000 title claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims description 39
- 238000000576 coating method Methods 0.000 claims description 39
- 239000000758 substrate Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000011358 absorbing material Substances 0.000 claims description 4
- 150000001408 amides Chemical class 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 239000000080 wetting agent Substances 0.000 claims description 3
- CNGYZEMWVAWWOB-VAWYXSNFSA-N 5-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-[(e)-2-[4-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]ethenyl]benzenesulfonic acid Chemical compound N=1C(NC=2C=C(C(\C=C\C=3C(=CC(NC=4N=C(N=C(NC=5C=CC=CC=5)N=4)N(CCO)CCO)=CC=3)S(O)(=O)=O)=CC=2)S(O)(=O)=O)=NC(N(CCO)CCO)=NC=1NC1=CC=CC=C1 CNGYZEMWVAWWOB-VAWYXSNFSA-N 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 229920006026 co-polymeric resin Polymers 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 229920006270 hydrocarbon resin Polymers 0.000 claims description 2
- 229920013716 polyethylene resin Polymers 0.000 claims description 2
- 239000012463 white pigment Substances 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- 239000013032 Hydrocarbon resin Substances 0.000 claims 1
- 229910052500 inorganic mineral Inorganic materials 0.000 claims 1
- 239000011707 mineral Substances 0.000 claims 1
- 239000000376 reactant Substances 0.000 claims 1
- 235000015096 spirit Nutrition 0.000 claims 1
- 239000001993 wax Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 239000008199 coating composition Substances 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 5
- 238000007639 printing Methods 0.000 description 4
- 239000000975 dye Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- YGUMVDWOQQJBGA-VAWYXSNFSA-N 5-[(4-anilino-6-morpholin-4-yl-1,3,5-triazin-2-yl)amino]-2-[(e)-2-[4-[(4-anilino-6-morpholin-4-yl-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]ethenyl]benzenesulfonic acid Chemical compound C=1C=C(\C=C\C=2C(=CC(NC=3N=C(N=C(NC=4C=CC=CC=4)N=3)N3CCOCC3)=CC=2)S(O)(=O)=O)C(S(=O)(=O)O)=CC=1NC(N=C(N=1)N2CCOCC2)=NC=1NC1=CC=CC=C1 YGUMVDWOQQJBGA-VAWYXSNFSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- 241001481710 Cerambycidae Species 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- OTGQIQQTPXJQRG-UHFFFAOYSA-N N-(octadecanoyl)ethanolamine Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCO OTGQIQQTPXJQRG-UHFFFAOYSA-N 0.000 description 1
- YDNKGFDKKRUKPY-UHFFFAOYSA-N N-palmitoyldihydro-sphingosine Natural products CCCCCCCCCCCCCCCC(=O)NC(CO)C(O)C=CCCCCCCCCCCCCC YDNKGFDKKRUKPY-UHFFFAOYSA-N 0.000 description 1
- 240000007930 Oxalis acetosella Species 0.000 description 1
- 235000008098 Oxalis acetosella Nutrition 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 239000001045 blue dye Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 125000005313 fatty acid group Chemical group 0.000 description 1
- FWQHNLCNFPYBCA-UHFFFAOYSA-N fluoran Chemical group C12=CC=CC=C2OC2=CC=CC=C2C11OC(=O)C2=CC=CC=C21 FWQHNLCNFPYBCA-UHFFFAOYSA-N 0.000 description 1
- 125000003827 glycol group Chemical group 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- DGSDBJMBHCQYGN-UHFFFAOYSA-M sodium;2-ethylhexyl sulfate Chemical compound [Na+].CCCCC(CC)COS([O-])(=O)=O DGSDBJMBHCQYGN-UHFFFAOYSA-M 0.000 description 1
- 239000008347 soybean phospholipid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/46—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography characterised by the light-to-heat converting means; characterised by the heat or radiation filtering or absorbing means or layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
- B41J2/475—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material for heating selectively by radiation or ultrasonic waves
- B41J2/48—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material for heating selectively by radiation or ultrasonic waves melting ink on a film or melting ink granules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/382—Contact thermal transfer or sublimation processes
- B41M5/38257—Contact thermal transfer or sublimation processes characterised by the use of an intermediate receptor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/46—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography characterised by the light-to-heat converting means; characterised by the heat or radiation filtering or absorbing means or layers
- B41M5/465—Infrared radiation-absorbing materials, e.g. dyes, metals, silicates, C black
Definitions
- the present invention relates to thermal printing and to an improved system for making an original and at least one good record copy during a printing operation.
- the early thermal printing systems used a thermal print element energized to heat specific and precise areas of a heat-sensitive paper or like record material and thereby produce readable characters on the single sheet of paper.
- the single sheet of paper includes material which is reactive to the applied heat and is described as a self-contained system.
- thermal printing systems have included two separate sheets of paper or like record material, wherein each sheet is coated with a heat- sensitive reactive material.
- the top or front sheet is usually a light weight tissue-type paper which is coated with a heat-sensitive material and the second sheet is preferably bond-type paper which is also coated with the heat-sensitive material.
- the two sheets are then mated or collated in a manner wherein the uncoated side of the tissue paper is in contact with the coating on the bond paper.
- the coated side of the tissue paper is adjacent and in close proximity to the thermal printing elements, or in certain applications, the elements may be in actual contact with the tissue paper.
- the thermal elements are actuated to provide specific and precise marking or imaging on the papers in the process which enables the obtaining of a master sheet plus a readable copy.
- the tissue paper could be coated on both the front and back sides so that the thermal printing elements are adjacent or in contact with the front coated side of the tissue paper and the back coating is in contact with the bond paper.
- the thermal elements are actuated to provide the specific and precise marking or imaging on the two papers so as to be in readable form.
- the tissue sheet and the bond sheet are arranged in manifold manner and the imaging is accomplished by transfer of the ink or like material in the coating of the tissue sheet onto the bond sheet when the thermal elements are actuated.
- a thermal printing method of forming multiple copy images including the step of heating a thermal transfer coating on a first substrate in selective manner for transferring coating material in the form of images onto a second substrate placed adjacent said first substrate, characterized in that said coating includes material absorbing near infra-red energy, and further characterized by the steps of placing a copy medium adjacent the second substrate, and applying near infra-red energy over the copy medium for heating the images on said second substrate and transferring the images to said copy medium.
- a heat-sensitive copy system including a first medium having a coating thereon, a second medium adjacent the first medium, means for selectively heating part of the coating on said first medium for transferring coating material onto the second medium in the form of images, characterized in that said coating is chosen to include near infra-red absorbing material, and further characterized by a copy medium adjacent the second medium, and means for producing near infra-red radiation for heating the second medium and transferring the coating images therefrom onto the copy medium.
- Fig. 1 is a diagrammatic view of the first step of the thermal copy system of the present invention.
- Fig. 2 is a diagrammatic view of one method of practicing the multiple ply concept
- Fig. 3 is a similar view of another method of practicing the concept.
- Figs. 1 and 2 illustrate in diagrammatic form the concept of a first process embodiment of the present invention wherein a thermal transfer ribbon 10 comprises a substrate 12 and a thermal transfer coating 14.
- a thermal print head 16 provides heat for transferring portions of the coating 14 onto a record medium which comprises a substrate 20 having a coating 21 for receiving the coating material 14 in the form of images 22.
- the second step involves the use of the record medium 18 and the application of heat from a near infra-red lamp 24 for creating or developing the image or images 22 onto a thermal paper 26 comprising a substrate 28 and a coating 30 for receiving the image or images 22 in one manner or process.
- a second process embodiment of the invention is shown in Figs. 1 and 3 and utilizes the same first step as the first embodiment, namely the use of the record medium 18, followed by the second step of applying heat from the near infra-red lamp 24 for transferring the image or images 22 onto the back side of translucent paper 32 which comprises a substrate 34 for receiving an image or images as at 36 from the coating 21 on the substrate 20.
- Near infra-red is defined as that portion of the electromagnetic spectrum between the wavelengths of 0.8 and 3 microns or is that invisible radiation with wavelengths in the range between 8,000 angstroms and 30,000 angstroms.
- Example I describes the materials for use with the method wherein the transfer coating 14 is applied to one side of the substrate 12.
- the transfer coating formulation 14 for the substrate 12 essentially consists of a hydrocarbon or polyethylene resin, one or more waxes, and a magnetic oxide or any other infra-red absorbing pigment.
- a preferred coating composition is as follows: TABLE 1
- the coating formulation 21 on the substrate 20 essentially consists of a dye, a phenolic resin, a wax, and a clay.
- the thermal transfer coating 14 is applied to the base sheet 12 in the creation of the thermal transfer ribbon 10, and the receiving sheet 18 includes the substrate 20 and the coating formulation 21 as set out in Table 2 above.
- the coating 14 is in the range of 1.36 to 2.27 Kgs. pounds dry weight per ream on sheet 12 and the coating 21 is in the range of 0.68 to 0.9 Kg dry weight per ream on sheet 20.
- the concept of multiple copy imaging in the present invention utilizes a combination of two technologies.
- the first technology used in the first step (Fig. 1) of each of the first and the second process embodiments involves the creation of a thermal print or image on a substrate by means of a thermal transfer ribbon 10 containing the coating 14 that includes the near infra-red absorbing material.
- the second step or phase of the first process embodiment involves the passing of a sandwich consisting of the substrate carrying the thermal print or image produced in the first step and a thermally reactive material sheet, such as thermal paper 26, under the near infra ⁇ red lamp 24 to create an image in the thermal paper (Fig. 2).
- a translucent paper 32 may be used and the sandwich is passed under the lamp 24 to transfer an image on the translucent paper which image is visible through the paper (Fig. 3).
- the overall concept of the present invention relies on the characteristic of absorbency of the near infra-red in the transferred print which heats the thermal image and reactivates the top thermally sensitive material thereby creating a readable image through the translucent sheet, as in the case of the second process embodiment.
- the image 22 produced on the receiving substrate 20 (Fig. 1) requires the presence of near IR absorbing material which becomes hot when exposed to the near IR lamp 24.
- the thermally reactive material combines with the hot dot or hot character to produce a clean, clear image on the paper (Fig. 2).
- the translucent sheet 32 which does not contain a coating, the image is created by a partial transfer of the thermally reactive material from the receiving sheet 18 onto the back side of the translucent sheet 32 to provide a readable image 36 through such sheet (Fig. 3).
- the present invention provides a method for making multiple copies by means of thermal printing equipment wherein such method eliminates the thickness sensitivity of materials currently used for multiple copy printing.
- a readable copy of the image was produced when a 10.88 Kg coated sheet (60 cm by 92 cm) was employed as the thermal paper.
- the invention is practical and simple for use where a limited amount of space is available for the necessary hardware since the only device required in the housing enclosure of the thermal transfer printer will be the near IR lamp 24.
- the various ingredients utilized in the thermal transfer coating 14 are further identified and are available from the noted sources.
- the Ceramid wax is a fatty acid derived amide wax available from Glyco Chemicals, Inc. and WB-17 is an oxidized, isocyanated hydrocarbon wax from Petrolite Corporation.
- AC-617 is a low molecular weight polyethylene available from Allied Chemical Corporation and Piccotex-75 is a hard, color stable, substituted styrene copolymer resin from Hercules, Inc.
- the iron oxide is available from BASF
- the Soya Lecithin is a wetting agent, oil-like extract of soybean from Capricorn Chemical
- the Slip Aid is a 20% dispersion of polymeric or high melting point polyethylene wax in xylene from Daniel Products.
- the bisphenol (4,4 - isopropyli-denediphenol) as a reactive material of the phenol group, is available from Dow Chemical Company.
- the black color forming dye of the fluoran group is Pergascript from Ciba- Geigy Corporation, or S205 from Yamada Chemical Company, or N-102 from Hilton-Davis Company, and the Vinol 107 is a polyvinyl alcohol used as a binding material.
- the Acrawax C is a synthetic wax and is available from Glyco Inc., and the amide wax is Armid HT or Armoslip 18 from Armour Chemical Company.
- the filler may be calcium carbonate supplied by Georgia Marble Company, or the filler may be Ansilex clay supplied by Engelhard Corporation.
- Nopco NDW is a defoamer of the glycol group and is available from Diamond Shamrock Corp.
- Niaproof 08 is a sodium 2- ethylhexyl sulfate used as a wetting agent and is available from Niacet Corp.
- Tinopal PT is a fluorescent brightener available from Ciba-Geigy Corporation.
- the titanium dioxide is a white pigment available from N. L. Industries (National Lead Corporation), and the zinc stearate is used as an anti-stick agent and is available from Witco Chemical Company.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Electronic Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US087,543 | 1979-10-23 | ||
US8754387A | 1987-07-06 | 1987-07-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1989000109A2 true WO1989000109A2 (en) | 1989-01-12 |
WO1989000109A3 WO1989000109A3 (en) | 1989-02-09 |
Family
ID=22205807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1988/002230 WO1989000109A2 (en) | 1987-07-06 | 1988-06-28 | Thermal printing method and system |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0324011A1 (en) |
JP (1) | JPH02500099A (en) |
WO (1) | WO1989000109A2 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2663654A (en) * | 1952-05-15 | 1953-12-22 | Minnesota Mining & Mfg | Heat-sensitive copying paper |
US2813043A (en) * | 1955-03-28 | 1957-11-12 | Minnesota Mining & Mfg | Heat-sensitive copying-paper |
US3706276A (en) * | 1970-09-18 | 1972-12-19 | Bell & Howell Co | Thermal transfer sheet |
JPS572794A (en) * | 1980-06-10 | 1982-01-08 | Tomoegawa Paper Co Ltd | Support body for heatsensitive recording paper |
US4533596A (en) * | 1983-06-28 | 1985-08-06 | Ncr Corporation | Thermal magnetic transfer ribbon |
JPS6287388A (en) * | 1985-10-15 | 1987-04-21 | Ricoh Co Ltd | Thermal transfer medium |
-
1988
- 1988-06-28 EP EP19880906541 patent/EP0324011A1/en not_active Withdrawn
- 1988-06-28 WO PCT/US1988/002230 patent/WO1989000109A2/en not_active Application Discontinuation
- 1988-06-28 JP JP50627788A patent/JPH02500099A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2663654A (en) * | 1952-05-15 | 1953-12-22 | Minnesota Mining & Mfg | Heat-sensitive copying paper |
US2813043A (en) * | 1955-03-28 | 1957-11-12 | Minnesota Mining & Mfg | Heat-sensitive copying-paper |
US3706276A (en) * | 1970-09-18 | 1972-12-19 | Bell & Howell Co | Thermal transfer sheet |
JPS572794A (en) * | 1980-06-10 | 1982-01-08 | Tomoegawa Paper Co Ltd | Support body for heatsensitive recording paper |
US4533596A (en) * | 1983-06-28 | 1985-08-06 | Ncr Corporation | Thermal magnetic transfer ribbon |
JPS6287388A (en) * | 1985-10-15 | 1987-04-21 | Ricoh Co Ltd | Thermal transfer medium |
Non-Patent Citations (3)
Title |
---|
Patent Abstracts of Japan, vol. 11, no. 295, (M-626) (2742) 24 September 1987 & JP-A-62087388 (RICOH CO. LTD) 21 April 1987 * |
Patent Abstracts of Japan, vol. 6, no. 61, (M-123)(939) 20 April 1982 & JP-A-57002794 (TOMOEGAWA SEISHIJIYO) 8 January 1982 * |
Patent Abstracts of Japan, vol. 7, no. 137 (M-222) (1282) 15 June 1983 & JP-A-5851193 (MITSUBISHI SEISHI K.K.) 25 March 1983 * |
Also Published As
Publication number | Publication date |
---|---|
JPH02500099A (en) | 1990-01-18 |
WO1989000109A3 (en) | 1989-02-09 |
EP0324011A1 (en) | 1989-07-19 |
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