US3178306A - Thermographic copying sheet and heat sensitive composition - Google Patents
Thermographic copying sheet and heat sensitive composition Download PDFInfo
- Publication number
- US3178306A US3178306A US186853A US18685362A US3178306A US 3178306 A US3178306 A US 3178306A US 186853 A US186853 A US 186853A US 18685362 A US18685362 A US 18685362A US 3178306 A US3178306 A US 3178306A
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- United States
- Prior art keywords
- heat
- alkyl
- aryl
- sensitive
- reaction product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000000203 mixture Substances 0.000 title claims description 42
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical class NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 32
- 239000007795 chemical reaction product Substances 0.000 claims description 28
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 20
- -1 THIURAM SULFIDES Chemical class 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 150000003556 thioamides Chemical class 0.000 claims description 10
- 229960002447 thiram Drugs 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000012991 xanthate Substances 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 5
- 150000001450 anions Chemical group 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 229910052733 gallium Inorganic materials 0.000 claims description 5
- 229910052732 germanium Inorganic materials 0.000 claims description 5
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052753 mercury Inorganic materials 0.000 claims description 5
- 150000002902 organometallic compounds Chemical class 0.000 claims description 5
- 150000003464 sulfur compounds Chemical class 0.000 claims description 5
- 229910052714 tellurium Inorganic materials 0.000 claims description 5
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 description 34
- 125000003118 aryl group Chemical group 0.000 description 23
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 21
- 239000000463 material Substances 0.000 description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 150000003585 thioureas Chemical class 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 229940100892 mercury compound Drugs 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 244000043261 Hevea brasiliensis Species 0.000 description 4
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 229910052797 bismuth Inorganic materials 0.000 description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229920003052 natural elastomer Polymers 0.000 description 4
- 229920001194 natural rubber Polymers 0.000 description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 229940075065 polyvinyl acetate Drugs 0.000 description 4
- 229920002689 polyvinyl acetate Polymers 0.000 description 4
- 239000011118 polyvinyl acetate Substances 0.000 description 4
- 229910052718 tin Inorganic materials 0.000 description 4
- 229920013620 Pliolite Polymers 0.000 description 3
- 150000002731 mercury compounds Chemical class 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 125000001424 substituent group Chemical group 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RNGRBOULPSEYNL-UHFFFAOYSA-N 1,3-dioctylthiourea Chemical compound CCCCCCCCNC(=S)NCCCCCCCC RNGRBOULPSEYNL-UHFFFAOYSA-N 0.000 description 2
- 238000007126 N-alkylation reaction Methods 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 2
- AEOCXXJPGCBFJA-UHFFFAOYSA-N ethionamide Chemical compound CCC1=CC(C(N)=S)=CC=N1 AEOCXXJPGCBFJA-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BODKAQWWZBLGOU-UHFFFAOYSA-N phenylmercury(1+) Chemical compound [Hg+]C1=CC=CC=C1 BODKAQWWZBLGOU-UHFFFAOYSA-N 0.000 description 2
- ZXFQZMVPEYERPI-UHFFFAOYSA-M phenylmercury(1+);benzoate Chemical compound C=1C=CC=CC=1C(=O)O[Hg]C1=CC=CC=C1 ZXFQZMVPEYERPI-UHFFFAOYSA-M 0.000 description 2
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 2
- OVRQXQSDQWOJIL-UHFFFAOYSA-N 1,1-dibutylthiourea Chemical compound CCCCN(C(N)=S)CCCC OVRQXQSDQWOJIL-UHFFFAOYSA-N 0.000 description 1
- GSFSVEDCYBDIGW-UHFFFAOYSA-N 2-(1,3-benzothiazol-2-yl)-6-chlorophenol Chemical compound OC1=C(Cl)C=CC=C1C1=NC2=CC=CC=C2S1 GSFSVEDCYBDIGW-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- PDQAZBWRQCGBEV-UHFFFAOYSA-N Ethylenethiourea Chemical compound S=C1NCCN1 PDQAZBWRQCGBEV-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FLVIGYVXZHLUHP-UHFFFAOYSA-N N,N'-diethylthiourea Chemical compound CCNC(=S)NCC FLVIGYVXZHLUHP-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- NTECHUXHORNEGZ-UHFFFAOYSA-N acetyloxymethyl 3',6'-bis(acetyloxymethoxy)-2',7'-bis[3-(acetyloxymethoxy)-3-oxopropyl]-3-oxospiro[2-benzofuran-1,9'-xanthene]-5-carboxylate Chemical compound O1C(=O)C2=CC(C(=O)OCOC(C)=O)=CC=C2C21C1=CC(CCC(=O)OCOC(C)=O)=C(OCOC(C)=O)C=C1OC1=C2C=C(CCC(=O)OCOC(=O)C)C(OCOC(C)=O)=C1 NTECHUXHORNEGZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000005804 alkylation reaction Methods 0.000 description 1
- 150000001449 anionic compounds Chemical class 0.000 description 1
- 150000001622 bismuth compounds Chemical class 0.000 description 1
- RBXJUAXJPPYIMY-UHFFFAOYSA-N bromo(triphenyl)germane Chemical compound C=1C=CC=CC=1[Ge](C=1C=CC=CC=1)(Br)C1=CC=CC=C1 RBXJUAXJPPYIMY-UHFFFAOYSA-N 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- ONQMBYVVEVFYRP-UHFFFAOYSA-N chloro(triphenyl)germane Chemical compound C=1C=CC=CC=1[Ge](C=1C=CC=CC=1)(Cl)C1=CC=CC=C1 ONQMBYVVEVFYRP-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- MGAUKEZPAMVFNT-UHFFFAOYSA-L dichloro-bis(2-methylphenyl)stannane Chemical compound CC1=CC=CC=C1[Sn](Cl)(Cl)C1=CC=CC=C1C MGAUKEZPAMVFNT-UHFFFAOYSA-L 0.000 description 1
- OAEGRYMCJYIXQT-UHFFFAOYSA-N dithiooxamide Chemical compound NC(=S)C(N)=S OAEGRYMCJYIXQT-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- ANVXNTXJGMBLMW-UHFFFAOYSA-N ethylmercury;hydrate Chemical compound O.CC[Hg] ANVXNTXJGMBLMW-UHFFFAOYSA-N 0.000 description 1
- 150000002259 gallium compounds Chemical class 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910001412 inorganic anion Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- JOTBHEPHROWQDJ-UHFFFAOYSA-N methylgallium Chemical compound [Ga]C JOTBHEPHROWQDJ-UHFFFAOYSA-N 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- PDTFCHSETJBPTR-UHFFFAOYSA-N phenylmercuric nitrate Chemical compound [O-][N+](=O)O[Hg]C1=CC=CC=C1 PDTFCHSETJBPTR-UHFFFAOYSA-N 0.000 description 1
- MSYUMXXVCSLXMR-UHFFFAOYSA-N phenylmercury;hydrate Chemical compound O.[Hg]C1=CC=CC=C1 MSYUMXXVCSLXMR-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 1
- 230000001235 sensitizing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Images
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
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/32—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers one component being a heavy metal compound, e.g. lead or iron
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F3/00—Compounds containing elements of Groups 2 or 12 of the Periodic Table
- C07F3/10—Mercury compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/22—Tin compounds
- C07F7/2208—Compounds having tin linked only to carbon, hydrogen and/or halogen
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/30—Germanium compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/913—Material designed to be responsive to temperature, light, moisture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/165—Thermal imaging composition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/16—Two dimensionally sectional layer
- Y10T428/163—Next to unitary web or sheet of equal or greater extent
- Y10T428/164—Continuous two dimensionally sectional layer
- Y10T428/166—Glass, ceramic, or metal sections [e.g., floor or wall tile, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/3188—Next to cellulosic
- Y10T428/31895—Paper or wood
- Y10T428/31899—Addition polymer of hydrocarbon[s] only
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31971—Of carbohydrate
- Y10T428/31975—Of cellulosic next to another carbohydrate
- Y10T428/31978—Cellulosic next to another cellulosic
- Y10T428/31986—Regenerated or modified
Definitions
- This invention relates to heat sensitive materials useful in the preparation of copies of printed or written matter, images, designs, drawings and other graphic material. More particularly, it is concerned with the preparation of thermographic or heat sensitive copying materials such as copying papers or duplicator sheets which may be utilized in the preparation of duplicate copies of printed or other graphic subject matter by exposure to heat, e.g. as infra-red irradiation, without requiring subsequent developing or fixing operations.
- Thermographic copying involves intensively irradiating the printed original with radiant energy which is preferentially absorbed and converted into heat energy by the printed or image areas of the original, and utilizing the heat pattern thus formed to bring about a corresponding visible change in the heat-sensitive copying material.
- the method is adaptable to the reproduction of printed, typewritten, a pencilled material, sketches, and the like.
- the heat-sensitive copying material can also be used in heated stylus-type recording machines. The heated stylus produces a visible trace on the recording paper.
- thermographic copying materials suitable for use in preparing thermographic copying materials are well known in the prior art. However, these compositions all have characteristics which present disadvantages. For example, many compositions are known which are both heat and light-sensitive. If thermographic copies made on sheets sensitized with such compositions are left for a period of time near a window, a uniform coloration will appear, making the image unreadable or barely readable. Some compositions are unstable and will deteriorate even in a dark file to such extent that the image will become unreadable. Some compositions will interact with typewriter-made carbon copies, and papers sensitized with such composition, when filed with carbon copies, are likely to form an image of the carbon copy on the heat-sensitive paper.
- compositions require an extremely high temperature, or heating for a relatively long time at a specific temperature, or heating over a wide range of temperatures, to produce a visible image of sufficient intensity to be readily legible.
- Other compositions are pressure-sensitive and will form coloration showing marks or scratches produced in normal handling. Still others are unstable to premature interaction of their constituents, or are moisture-sensitive, and so have short shelf-life and must be used soon after coating.
- Heatsensitive compositions in accordance with the invention are characterized by good stability, freedom from interaction with typewriter carbon papers, and good shelflife.
- the invention provides white or colorless heatsensitive compositions that convert to dense black images; thus the final thermocopy has a black image on a white original.
- thermographic copying materials which have advantages over previously known heatsensitive copying papers in that images resulting from exposure to an original in a suitable thermographic copying apparatus are efiicient ultra-violet radiation absorbers, whereas the original or unaltered heat-sensitive composition is highly transparent to ultra-violet radiation; thus this novel copying paper can be used as a master for making diazo prints in a diazo machine.
- the images obtained are efiicient absorbers of infra-red radiation, whereas the heat-sensitive compositions to be described are highly transparent to infra-red radiation; thus a print made on a copy sheet manufactured according to this invention can be used as an original for making additional copies on a suitable thermographic copying apparatus.
- organometal compounds dispersed in a film-forming binder coated on a suitable support such as paper or film, which preferably is substantially transparent to infra-red radiation. Additional components may be added to improve the contrast, color or appearance of the heat-sensitive copying sheet.
- the organometal compounds that are used in practicing this invention are compounds containing sulfur which decompose when heated moderately to form a metal sulfide.
- the compounds used for mafing heat-sensitive compositions according to the invention are reaction products of (i) a Grignard-type organometallic compound having the structure (R) -M(X) in which R is a substituent selected from the group consisting of aryl and alkyl radicals, M is a metal of the group consisting of bismuth, chromium, gallium, germanium, iron, lead, mercury, tellurium, and tin, X is any anion substituent (e.g.
- Heat sensitive compositions according to the invention are prepared by dispersing such a reaction product in a film forming binder, such for example as a vinyl or styrene polymer or a cyclized rubber dissolved in a solvent.
- a film forming binder such for example as a vinyl or styrene polymer or a cyclized rubber dissolved in a solvent.
- Thermographic copying sheets are prepared by coating such composition on a suitable support such as paper or film which is substantially transparent to infra-red radiation.
- thermographic copying sheet comprising an infra-red transparent paper base and a heat-sensitive coating of the character herein described.
- R and R may be alkyl or aryl groups, and R and R may be hydrogen or an alkyl or aryl group.
- R, R and R and R may be alkyl or aryl.
- R and R may be alkyl or aryl.
- R, R R and R may be alkyl or aryl.
- R1glb-S Where R and R may be alkyl or aryl.
- R may be alkyl or aryl and R and R may be hydrogen, alkyl or :aryl.
- thermographic copying sheet Following are specific examples of heat-sensitive compositions according to the invention, and of their application to a paper support sheet to form a thermographic copying sheet:
- Example 1 Phenyl mercuric benzoate g 3 Di-N-octyl thiourea g 1 Polyvinylacetate 'g 1 Methanol ml
- the phenyl mercuric benzoate and di-N-octyl thiourea in the proportion stated were reacted in the methanol for three hours, the polyvinyl-acetate was added under agitation and the mixture was then ball-milled to insure breaking up of all solid lumps and to reduce the reaction product to a good coating consistency. It was then coated on a standard type of paper having good infra-red transmissibility for thermogra'phic reproduction. When exposed in contact with a printed test sheet in a conventional lthermographic copying machine, the coated paper yielded a fine black on white reproduction of the .test sheet.
- Example 2 the reagents specified were reacted in the proportion stated and ballmilled, in the same manner as in Example 1.
- the resulting composition was (in each case coated on a suitable paper and found to produce thereby a thermographic copying sheet on which a fine reproduction of a printed test sheet could be made in a conventional thermographic copying machine.
- Example 2 Triphenyl germanium chloride granrsu 4.0 Di-ethyltthioura dO 1.5 Cyclized natural rubber (#Pliolite NR) do 1.5 Toluene ml 10
- Example 3 Diethylt-in dichloride grams 2.5 Ethylenethiourea d0 1.3 Cyclized natural rubber PLiOIite NR) d0 1 Toluene ml 10
- Example 4 Methyl gallium dichloride "grams” 4.0 Di-n butylthiourea "10---- 1.5 Styrene copolymer resin (Piccotex) d0 2 Heptane ml 15
- Example 5 Phenyl mercuric tosylate grams 4.5 Diphenylthiocarbanilide d0 1.5 Polyvinyl alcohol d0 2.0 Methanol ml 12
- Example 6 Ethylmercuric hydroxide "grams" 3.0 Die-thylthiourea
- Example 9 Trimethylgallium monoamine grams 4.0 Tetramethyl thiuram disulfide d0 3.0 Styrene copolymer resin (Piccotex) do 2.0 Ligroin ml 15
- Example 10 Phenyl mercuric hydroxide grams 6.0 Dithiooxamide do 3.0 Carboxymethylcellulose do 1.0 Methanol ml 12 Water ml 1.2
- Example 11 Triphenyl germanium bromide grams 8.0 Sodium dimethyldithiocarbamate do 2.0 Cyclized natural rubber (Pliolite NR) do 1.0 Toluene ml 20
- Example 12 Naphthyl mercury stearate i grams 5.0 Thiourea "do"..- 1.0 Polyvinyl acetate in hexane (Gelva H) ml 15
- Example 13 Di-o-tolyltin dichloride grams 4.5 Thiourea d0 1.5 Cyclized natural rubber (Pliolite NR) do 1.5
- thermosensitive sheet in which the heat-sensitive composition comprises the reaction product of a Grignard-type mercury compound.
- thermosensitive sheet according to claim 1 in which the heat-sensitive composition comprises the reaction product of a Grignard-type gallium compound.
- a heat-sensitive sheet according to claim 1, in which a heat-sensitive composition comprises the reaction product of a Grignard-type tin compound.
- thermosensitive sheet according to claim 1 in which the heat-sensitive composition comprises the reaction product of thiourea.
- thermosensitive sheet according to claim 1 in which the heat-sensitive composition comprises the reaction product of an alkyl substituted thiourea.
- thermosensitive sheet according to claim 1 in which the heat-sensitive composition comprises the reaction product of a thioamide.
- thermosensitive sheet according to claim 1 in which the heat-sensitive composition comprises the reaction product of a xanthate.
- the heat-sensitive composition comprises the reaction product of a phenyl mercuric compound and thiourea.
- thermosensitive sheet according to claim 14 in which the heat-sensitive composition comprises the reaction product of a phenyl mercuric compound and an alkyl substituted thiourea.
- thermographic copying sheet comprising a base sheet of material which is substantially transparent to infra-red radiation, said sheet carrying a coating of a heat-sensitive composition comprising a film-forming binder in which there is dispersed the reaction product of (i) a Grignard-type organometallic compound having the structure (R) M-(X) in which R is a substituent selected from the group consisting of aryl and alkyl radicals, M is a metal of the group consisting of bismuth, chromium, gallium, germanium, iron, lead, mercury, tellurium and tin, X is an anion substituent, y and 1 each is an integer and y+z the valence of the metal, and (ii) a sulfur compound of the group consisting of alkyl and aryl Xanthates, alkyl and aryl thiuram sulfides, thiourea, alkyl and aryl substituted thiourea, thioamides,
- R is a substituent selected from the group consisting of
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Paints Or Removers (AREA)
- Physical Vapour Deposition (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE631000D BE631000A (enrdf_load_stackoverflow) | 1962-04-12 | ||
| NL286024D NL286024A (enrdf_load_stackoverflow) | 1962-04-12 | ||
| US186853A US3178306A (en) | 1962-04-12 | 1962-04-12 | Thermographic copying sheet and heat sensitive composition |
| ES283429A ES283429A1 (es) | 1962-04-12 | 1962-12-15 | Mejoras introducidas en la fabricación de hojas sensibles al calor |
| FR931500A FR1360416A (fr) | 1962-04-12 | 1963-04-12 | Matières thermosensibles convenant pour la préparation de copies par des techniques thermographiques |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US186853A US3178306A (en) | 1962-04-12 | 1962-04-12 | Thermographic copying sheet and heat sensitive composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3178306A true US3178306A (en) | 1965-04-13 |
Family
ID=22686525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US186853A Expired - Lifetime US3178306A (en) | 1962-04-12 | 1962-04-12 | Thermographic copying sheet and heat sensitive composition |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3178306A (enrdf_load_stackoverflow) |
| BE (1) | BE631000A (enrdf_load_stackoverflow) |
| ES (1) | ES283429A1 (enrdf_load_stackoverflow) |
| NL (1) | NL286024A (enrdf_load_stackoverflow) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3505093A (en) * | 1967-12-01 | 1970-04-07 | Minnesota Mining & Mfg | Heat-sensitive copy-sheet containing bis(triphenylphosphine)borohydridocopper (i) |
| JPS51135540A (en) * | 1975-05-20 | 1976-11-24 | Fuji Photo Film Co Ltd | Heat sensitive material for recording |
| US4394407A (en) * | 1979-06-27 | 1983-07-19 | Lgz Landis & Gyr Zug Ag | Method for the manufacture of a layer from a thermochrome lacquer, and its use |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1844199A (en) * | 1928-08-30 | 1932-02-09 | Rca Corp | Pyro-recording paper |
| US1880449A (en) * | 1930-08-07 | 1932-10-04 | Eastman Kodak Co | Tropochromic coating |
| US2095839A (en) * | 1935-09-27 | 1937-10-12 | Eastman Kodak Co | Photothermographic composition |
| US2414839A (en) * | 1945-01-31 | 1947-01-28 | Gen Aniline & Film Corp | Light sensitized lead printing compounds and process of reproduction |
| US2625494A (en) * | 1948-05-05 | 1953-01-13 | Morrison Montford | Heat-sensitive recording element |
| US2813042A (en) * | 1952-10-02 | 1957-11-12 | Dick Co Ab | Method of preparing a sensitized thermographic copy sheet and resultant sheet |
| US2999035A (en) * | 1958-03-08 | 1961-09-05 | Keuffel & Esser Co | Heat sensitive reproduction sheet, method of making and method of using |
-
0
- BE BE631000D patent/BE631000A/xx unknown
- NL NL286024D patent/NL286024A/xx unknown
-
1962
- 1962-04-12 US US186853A patent/US3178306A/en not_active Expired - Lifetime
- 1962-12-15 ES ES283429A patent/ES283429A1/es not_active Expired
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1844199A (en) * | 1928-08-30 | 1932-02-09 | Rca Corp | Pyro-recording paper |
| US1880449A (en) * | 1930-08-07 | 1932-10-04 | Eastman Kodak Co | Tropochromic coating |
| US2095839A (en) * | 1935-09-27 | 1937-10-12 | Eastman Kodak Co | Photothermographic composition |
| US2414839A (en) * | 1945-01-31 | 1947-01-28 | Gen Aniline & Film Corp | Light sensitized lead printing compounds and process of reproduction |
| US2625494A (en) * | 1948-05-05 | 1953-01-13 | Morrison Montford | Heat-sensitive recording element |
| US2813042A (en) * | 1952-10-02 | 1957-11-12 | Dick Co Ab | Method of preparing a sensitized thermographic copy sheet and resultant sheet |
| US2999035A (en) * | 1958-03-08 | 1961-09-05 | Keuffel & Esser Co | Heat sensitive reproduction sheet, method of making and method of using |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3505093A (en) * | 1967-12-01 | 1970-04-07 | Minnesota Mining & Mfg | Heat-sensitive copy-sheet containing bis(triphenylphosphine)borohydridocopper (i) |
| JPS51135540A (en) * | 1975-05-20 | 1976-11-24 | Fuji Photo Film Co Ltd | Heat sensitive material for recording |
| US4394407A (en) * | 1979-06-27 | 1983-07-19 | Lgz Landis & Gyr Zug Ag | Method for the manufacture of a layer from a thermochrome lacquer, and its use |
Also Published As
| Publication number | Publication date |
|---|---|
| ES283429A1 (es) | 1963-04-16 |
| NL286024A (enrdf_load_stackoverflow) | 1900-01-01 |
| BE631000A (enrdf_load_stackoverflow) | 1900-01-01 |
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