US2281895A - Light sensitive material - Google Patents
Light sensitive material Download PDFInfo
- Publication number
- US2281895A US2281895A US365652A US36565240A US2281895A US 2281895 A US2281895 A US 2281895A US 365652 A US365652 A US 365652A US 36565240 A US36565240 A US 36565240A US 2281895 A US2281895 A US 2281895A
- Authority
- US
- United States
- Prior art keywords
- light
- dyestuffs
- anthraquinone
- sensitive material
- grams
- 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
Links
- 239000000463 material Substances 0.000 title description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 12
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 9
- 239000000975 dye Substances 0.000 description 9
- 150000004056 anthraquinones Chemical class 0.000 description 8
- NYGZLYXAPMMJTE-UHFFFAOYSA-M metanil yellow Chemical group [Na+].[O-]S(=O)(=O)C1=CC=CC(N=NC=2C=CC(NC=3C=CC=CC=3)=CC=2)=C1 NYGZLYXAPMMJTE-UHFFFAOYSA-M 0.000 description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 6
- 238000004061 bleaching Methods 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- HUKPVYBUJRAUAG-UHFFFAOYSA-N 7-benzo[a]phenalenone Chemical compound C1=CC(C(=O)C=2C3=CC=CC=2)=C2C3=CC=CC2=C1 HUKPVYBUJRAUAG-UHFFFAOYSA-N 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- LUGFLWHCEHCAOB-UHFFFAOYSA-N 7-oxobenzo[a]phenalene-1-sulfonic acid Chemical class C1(=CC=C2C=CC=C3C(=O)C4=CC=CC=C4C1=C23)S(=O)(=O)O LUGFLWHCEHCAOB-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- -1 allryl groups Chemical group 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 125000001424 substituent group Chemical group 0.000 description 3
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 description 2
- BCHZICNRHXRCHY-UHFFFAOYSA-N 2h-oxazine Chemical compound N1OC=CC=C1 BCHZICNRHXRCHY-UHFFFAOYSA-N 0.000 description 2
- SGHZXLIDFTYFHQ-UHFFFAOYSA-L Brilliant Blue Chemical compound [Na+].[Na+].C=1C=C(C(=C2C=CC(C=C2)=[N+](CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C=2C(=CC=CC=2)S([O-])(=O)=O)C=CC=1N(CC)CC1=CC=CC(S([O-])(=O)=O)=C1 SGHZXLIDFTYFHQ-UHFFFAOYSA-L 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- HTKFORQRBXIQHD-UHFFFAOYSA-N allylthiourea Chemical compound NC(=S)NCC=C HTKFORQRBXIQHD-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- 235000012745 brilliant blue FCF Nutrition 0.000 description 2
- 239000004161 brilliant blue FCF Substances 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- SHXOKQKTZJXHHR-UHFFFAOYSA-N n,n-diethyl-5-iminobenzo[a]phenoxazin-9-amine;hydrochloride Chemical compound [Cl-].C1=CC=C2C3=NC4=CC=C(N(CC)CC)C=C4OC3=CC(=[NH2+])C2=C1 SHXOKQKTZJXHHR-UHFFFAOYSA-N 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 239000004627 regenerated cellulose Substances 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 2
- RUVINXPYWBROJD-ONEGZZNKSA-N trans-anethole Chemical compound COC1=CC=C(\C=C\C)C=C1 RUVINXPYWBROJD-ONEGZZNKSA-N 0.000 description 2
- IVAYATOINUDYDN-UHFFFAOYSA-N 3-chloro-6-diazocyclohexa-2,4-diene-1-sulfonic acid Chemical compound ClC1=CC(C(C=C1)=[N+]=[N-])S(=O)(=O)O IVAYATOINUDYDN-UHFFFAOYSA-N 0.000 description 1
- LAXPFHMCFLHGKK-UHFFFAOYSA-N 4-diazo-n,n-dimethylcyclohexa-1,5-dien-1-amine Chemical compound CN(C)C1=CCC(=[N+]=[N-])C=C1 LAXPFHMCFLHGKK-UHFFFAOYSA-N 0.000 description 1
- UEUIKXVPXLWUDU-UHFFFAOYSA-N 4-diazoniobenzenesulfonate Chemical compound [O-]S(=O)(=O)C1=CC=C([N+]#N)C=C1 UEUIKXVPXLWUDU-UHFFFAOYSA-N 0.000 description 1
- QPQKUYVSJWQSDY-UHFFFAOYSA-N 4-phenyldiazenylaniline Chemical compound C1=CC(N)=CC=C1N=NC1=CC=CC=C1 QPQKUYVSJWQSDY-UHFFFAOYSA-N 0.000 description 1
- VPXCXBHLKDPWQV-UHFFFAOYSA-N 5-amino-2-chlorobenzenesulfonic acid Chemical compound NC1=CC=C(Cl)C(S(O)(=O)=O)=C1 VPXCXBHLKDPWQV-UHFFFAOYSA-N 0.000 description 1
- JAJIPIAHCFBEPI-UHFFFAOYSA-N 9,10-dioxoanthracene-1-sulfonic acid Chemical class O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2S(=O)(=O)O JAJIPIAHCFBEPI-UHFFFAOYSA-N 0.000 description 1
- OKONMFPEKSWGEU-UHFFFAOYSA-N 9,10-dioxoanthracene-2,7-disulfonic acid Chemical compound C1=C(S(O)(=O)=O)C=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 OKONMFPEKSWGEU-UHFFFAOYSA-N 0.000 description 1
- MMNWSHJJPDXKCH-UHFFFAOYSA-N 9,10-dioxoanthracene-2-sulfonic acid Chemical compound C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 MMNWSHJJPDXKCH-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 description 1
- DOLKKDJAWDNAMU-UHFFFAOYSA-N [4-[bis[4-(diethylamino)phenyl]methylidene]naphthalen-1-ylidene]-(4-methylphenyl)azanium;chloride Chemical compound [Cl-].C1=CC(N(CC)CC)=CC=C1C(C=1C=CC(=CC=1)N(CC)CC)=C(C=C1)C2=CC=CC=C2C1=[NH+]C1=CC=C(C)C=C1 DOLKKDJAWDNAMU-UHFFFAOYSA-N 0.000 description 1
- 229940081735 acetylcellulose Drugs 0.000 description 1
- CQPFMGBJSMSXLP-UHFFFAOYSA-M acid orange 7 Chemical compound [Na+].OC1=CC=C2C=CC=CC2=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 CQPFMGBJSMSXLP-UHFFFAOYSA-M 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229940011037 anethole Drugs 0.000 description 1
- 239000000987 azo dye Substances 0.000 description 1
- 229950011260 betanaphthol Drugs 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- GLNADSQYFUSGOU-UHFFFAOYSA-J chembl1640 Chemical compound [Na+].[Na+].[Na+].[Na+].C1=C(S([O-])(=O)=O)C=C2C=C(S([O-])(=O)=O)C(N=NC3=CC=C(C=C3C)C=3C=C(C(=CC=3)N=NC=3C(=CC4=CC(=CC(N)=C4C=3O)S([O-])(=O)=O)S([O-])(=O)=O)C)=C(O)C2=C1N GLNADSQYFUSGOU-UHFFFAOYSA-J 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 238000006193 diazotization reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- FDZZZRQASAIRJF-UHFFFAOYSA-M malachite green Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1C(C=1C=CC=CC=1)=C1C=CC(=[N+](C)C)C=C1 FDZZZRQASAIRJF-UHFFFAOYSA-M 0.000 description 1
- 229940107698 malachite green Drugs 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- ISGXOWLMGOPVPB-UHFFFAOYSA-N n,n-dibenzylaniline Chemical compound C=1C=CC=CC=1CN(C=1C=CC=CC=1)CC1=CC=CC=C1 ISGXOWLMGOPVPB-UHFFFAOYSA-N 0.000 description 1
- FZPXKEPZZOEPGX-UHFFFAOYSA-N n,n-dibutylaniline Chemical compound CCCCN(CCCC)C1=CC=CC=C1 FZPXKEPZZOEPGX-UHFFFAOYSA-N 0.000 description 1
- HSZCJVZRHXPCIA-UHFFFAOYSA-N n-benzyl-n-ethylaniline Chemical compound C=1C=CC=CC=1N(CC)CC1=CC=CC=C1 HSZCJVZRHXPCIA-UHFFFAOYSA-N 0.000 description 1
- VQQXVDXXPDMOMH-UHFFFAOYSA-N n-cyclohexyl-n-ethylaniline Chemical compound C=1C=CC=CC=1N(CC)C1CCCCC1 VQQXVDXXPDMOMH-UHFFFAOYSA-N 0.000 description 1
- RUVINXPYWBROJD-UHFFFAOYSA-N para-methoxyphenyl Natural products COC1=CC=C(C=CC)C=C1 RUVINXPYWBROJD-UHFFFAOYSA-N 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- ORFSSYGWXNGVFB-UHFFFAOYSA-N sodium 4-amino-6-[[4-[4-[(8-amino-1-hydroxy-5,7-disulfonaphthalen-2-yl)diazenyl]-3-methoxyphenyl]-2-methoxyphenyl]diazenyl]-5-hydroxynaphthalene-1,3-disulfonic acid Chemical compound COC1=C(C=CC(=C1)C2=CC(=C(C=C2)N=NC3=C(C4=C(C=C3)C(=CC(=C4N)S(=O)(=O)O)S(=O)(=O)O)O)OC)N=NC5=C(C6=C(C=C5)C(=CC(=C6N)S(=O)(=O)O)S(=O)(=O)O)O.[Na+] ORFSSYGWXNGVFB-UHFFFAOYSA-N 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- AXMCIYLNKNGNOT-UHFFFAOYSA-N sodium;3-[[4-[(4-dimethylazaniumylidenecyclohexa-2,5-dien-1-ylidene)-[4-[ethyl-[(3-sulfophenyl)methyl]amino]phenyl]methyl]-n-ethylanilino]methyl]benzenesulfonate Chemical compound [Na+].C=1C=C(C(=C2C=CC(C=C2)=[N+](C)C)C=2C=CC(=CC=2)N(CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C=CC=1N(CC)CC1=CC=CC(S(O)(=O)=O)=C1 AXMCIYLNKNGNOT-UHFFFAOYSA-N 0.000 description 1
- UWGCNDBLFSEBDW-UHFFFAOYSA-M sodium;4-[[4-(diethylamino)phenyl]-(4-diethylazaniumylidenecyclohexa-2,5-dien-1-ylidene)methyl]naphthalene-2,7-disulfonate Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C2=CC=C(C=C2C=C(C=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 UWGCNDBLFSEBDW-UHFFFAOYSA-M 0.000 description 1
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Inorganic materials O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 1
- HIFJUMGIHIZEPX-UHFFFAOYSA-N sulfuric acid;sulfur trioxide Chemical compound O=S(=O)=O.OS(O)(=O)=O HIFJUMGIHIZEPX-UHFFFAOYSA-N 0.000 description 1
- AODQPPLFAXTBJS-UHFFFAOYSA-M victoria blue 4R Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1C(C=1C=CC(=CC=1)N(C)C)=C(C=C1)C2=CC=CC=C2C1=[N+](C)C1=CC=CC=C1 AODQPPLFAXTBJS-UHFFFAOYSA-M 0.000 description 1
- XOSXWYQMOYSSKB-LDKJGXKFSA-L water blue Chemical compound CC1=CC(/C(\C(C=C2)=CC=C2NC(C=C2)=CC=C2S([O-])(=O)=O)=C(\C=C2)/C=C/C\2=N\C(C=C2)=CC=C2S([O-])(=O)=O)=CC(S(O)(=O)=O)=C1N.[Na+].[Na+] XOSXWYQMOYSSKB-LDKJGXKFSA-L 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/02—Direct bleach-out processes; Materials therefor; Preparing or processing such materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/48—Photometry, e.g. photographic exposure meter using chemical effects
- G01J1/50—Photometry, e.g. photographic exposure meter using chemical effects using change in colour of an indicator, e.g. actinometer
Definitions
- the present invention relates to light sensitive materials which may be used for photographic purposes.
- triphenylmethane dyestuffs for tive materials are obtained which may be used for photographic purposes.
- Such light-sensitive materials have hitherto not attained a great importance in view of the fact that the light-sensitiveness of the dyestuffs which in most cases is only very small is not sufliciently enhanced by the sensitizers so that the light-sensitive materials require too long times of exposure.
- the anthraquinone and the derivatives thereof are suitable sensitizers for the above mentioned light-sensitive layers containing organic dyestuffs.
- the derivatives which have a good solubility in water and are colorless or only feebly colored may be used with special advantage.
- the benzene nuclei of the anthraquinone may carry simple substituents such as allryl groups, halogen atoms, carboxylic or sulfoiiic acid groups.
- 2-anthraquinone monosulfonic acid may also be used with good success.
- the anthraquinone or its derivatives there may be used the benzanthrone or the derivatives thereof,
- the light-sensitiveness of dyestuffs may be enhancedto a conthe light-sensitiveness obtained by sensitization of dyestuffs with known sensitizers. It,v is even poss ifle, according to this invention, to sensitize dyestuffs, which per se are practically not sensitive to light, to such an extent that they show a great light-sensitiveness and may, consequently be used'for photographic purposes.
- the sensitizers used according to the present invention are preferably applied together with azo-dyestufl's, for instance, very simple azo-dyestufis, such as amino-azobenzene or complicated 5
- azo-dyestufl's for instance, very simple azo-dyestufis, such as amino-azobenzene or complicated 5
- the Y siderable extent 1. e. in general to a multipleof November 20,
- a'zo-dyestuffs such as, disazo-dyestufis, .trisazodyestuffs or tetrokisazo-dyestuifs.
- the best re-' sults are generally obtained with mon'oazo-dyestuffs, especially such as contain one or several There instance, blue or violet triphenylmethane dyestuffs. When combined with the said sensitizers they very quickly turn yellow-green .or green, respectively, on exposure to light.
- Oxazine dyestuffs such as Nile-blue or quinone dyestuffs such as Alizarinirisol D or Alizarinsaphirol B (see Schultz Farbstofltabellen 1931, Nos.
- layers may also be applied in the color photography or in heliographicprinting for the preparation of prints.
- blue dyestuffs preferably those which entirely bleach out on exposure to light.
- yellow dyestufls are generally to be preferred. 7
- the said light-sensitive layers resides in the fact that they 'are of good stability in the dark. As is sensitive to light, asmore fully described below.”
- the fixation may be carried through in various ways according to the properties of the dyestuffs and sensitizers used. If in the case of a bleaching-out layer the sensitizer is soluble in a solvent in which the dyestuff does not dissolve, the sensitizer may be removed after exposure bywashing out with the respective solvent. In many cases water may be used as solvent. If dyestuffs are used which per se are practically insensitive to light, stable prints may be obtained in this manner. Sometimes it is even possible to use for the fixation a liquid which dissolves the sensitizer and in which the dyestufi per se is likewise soluble. This method may be applied in case the dyestuif has substantive properties relative to the support or is rendered insoluble by a treatment with a mordant or a like operation.
- the dyestuff differs in its form according to the pH-value of the layer. It often occurs that of the two forms which are generally of different color that one existing at a higher pH-value is not or hardly sensitive to light whereas that one existing at a lower pHvalue is sensitive to light.
- the dyestuif is then used in the latter form, the fixation being performed in the dry way by treating the light-sensitive material with gaseous ammonia.
- a film of regenerated cellulose is impregnated with a solution containing per liter of water grams of the dyestuff prepared by coupling diazotized sulfonllic acid with beta-naphthol (Orange II Schultz Farbstofitabellen No. 189) grams of phosphoric acid and. 25 grams of 2.7-anthraquinone disulfonate of sodium.
- exposing the orange-red film thus obtained to the light of an arc lamp the coloration disappears in a few minutes.
- the film may, for instance, be used for photometric purposes.
- Films of similar properties may be obtained with the aid of azo-dyestufis prepared by coupling of the following components: diazotized aniline and dimethylaniline (butteryellow 0, Schultz Farbstofftabellen No.
- the prints may be fixed by treating them with gaseous ammonia whereby the dyestuff assume a lighte yellow color stable to light.
- the prints obtained are suitable for further printing on diazo-photoprinting material.
- 2.7-anthraquinone sulfonate of sodium there may be used grams of 1. i-dichlor0-2-anthraquinone sulfonate of potassium. It is also possible to use instead of the dichloro compound, 1.2-diamino-anthraquinone- 3-sulionic acid in form of its sodium or potassium salt, the amino compounds, however, being in general less suitable on account of an intense coloration of their own.
- a cellulose hydrate foil is impregnated with a solution of 5 grams of erioglaucine (see Schultz, Farbstoiftabellen 1931, N0. 770) 10 grams of phosphoric acid and 20 grams of anthraquinone-2.7-disulfonate of sodium 1 liter of water.
- erioglaucine see Schultz, Farbstoiftabellen 1931, N0. 770
- phosphoric acid 10 grams
- anthraquinone-2.7-disulfonate of sodium 1 liter of water When exposed to light under an original the exposed parts change from blue to yellow-green. These exposed yellow-green parts absorb chemically active light better than the unexposed blue parts.
- Such a film may be used for the preparation of an intermediate original in case a positive shall be prepared on diazo-photoprinting paper from a negative.
- the erioglaucine there may be applied in a similar manner other triphenylmethane dyestuffs, for instance Acid
- a light-sensitive material is prepared by impregnating a cellulosehydrate film with a solution containing per liter of water 15 grams of the sulfonated dyestufl, 20 grams of phosphoric acid and 40 grams of the sodium salt of benzanthrone-sulfonic acid: The latter is obtained by introducing benzanthrone into 6 or 8 times the quantity of fuming sulfuric acid containing 20% of free sulfuric anhydride, the temperature of the mixture rising to about 60 C. and sulfonatlon taking place. When a test portion shows that the product obtained is entirely soluble in water, the whole is diluted with ice water and the sodium salt of benzanthrone-sulfonic acid is isolated by addition of sodium chloride. Instead of the benzanthrone-sulfonic acid the sulfonic acid of napthanthraquinone prepared in an analogous manner may be used.
- Light sensitive material which consists of a sheet support carrying a colored layer which layer changes their shade on exposure to light wherein the said layer comprises a dyestufi which is unstable to light and as a sensitizer a substance selected from the group consisting of anthraquinone and benzanthrone compounds.
- Light sensitive material which consists of a sheet support carrying a layer which comprises a dyestufl capable of bleaching out on exposure of the layer to light and as a sensitizer a substance selected from the group consisting of water soluble anthraquinone and benzanthrone compounds.
- Light sensitive material which consists of a sheet support carrying a layer which com-' prises a dyestufl capable of bleaching out on exposure of the layer to light and as a sensitizer a substance selected from the group consisting 11 wherein the said dyestufl is a mono-azo dyestufl containing a basic group.
- Light sensitive material which consists of a sheet support carrying a layer which comprises a dyestufi capable of bleaching out on exposure of the layer to light and as a sensitizer a substance selected from the group consisting of water soluble substantially colorless anthraquinone and benzanthrone compounds.
- Light sensitivematerial which consists of a sheet support carrying a layer which comprises an azo dyestui! capable of bleaching out on exposure of the layer to light and as a sensitizer a water soluble substantially colorless anthraquinone derivativewhich contains a sulfo group as a substituent in an aromatic nucleus.
- Light sensitive material which consists of a cellulose hydrate foil which is impregnated with a mixture comprising a mono-azo dyestuif capable of bleaching out on exposure of the layer to light and a 'water soluble substantially colorless anthraquinone derivative which contains a sulfo group as a substituent in an aromatic nucleus.
- Light sensitive material which consists of a cellulosehydrate foil which is impregnated with a mixture comprising a mono-azo dyestufi capable of bleaching out on exposure of the layer to light and 2.7-anthraquinone disulfonic acid.
- Light sensitive material which consists of
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE218097X | 1939-11-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2281895A true US2281895A (en) | 1942-05-05 |
Family
ID=5831109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US365652A Expired - Lifetime US2281895A (en) | 1939-11-20 | 1940-11-14 | Light sensitive material |
Country Status (5)
Country | Link |
---|---|
US (1) | US2281895A (fr) |
BE (1) | BE439901A (fr) |
CH (2) | CH220433A (fr) |
FR (1) | FR870244A (fr) |
NL (1) | NL54339C (fr) |
Cited By (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3285744A (en) * | 1963-04-04 | 1966-11-15 | Horizons Inc | Photography |
US3527639A (en) * | 1965-09-30 | 1970-09-08 | Kalle Ag | Light-sensitive composition utilizing anthraquinone derivatives as optical sensitizers |
US3892569A (en) * | 1972-12-04 | 1975-07-01 | Gen Film Dev Corp | Photosensitive sheets comprising organic dyes and sensitizers |
JPS50131517A (fr) * | 1974-04-03 | 1975-10-17 | ||
US4241166A (en) * | 1978-02-24 | 1980-12-23 | Hoechst Aktiengesellschaft | Photopolymerizable composition comprising a monoazo dye as contrast colorant |
US4251622A (en) * | 1973-05-25 | 1981-02-17 | Nippon Paint Co., Ltd. | Photo-sensitive composition for dry formation of image |
US5616443A (en) * | 1993-08-05 | 1997-04-01 | Kimberly-Clark Corporation | Substrate having a mutable colored composition thereon |
US5643356A (en) * | 1993-08-05 | 1997-07-01 | Kimberly-Clark Corporation | Ink for ink jet printers |
US5645964A (en) * | 1993-08-05 | 1997-07-08 | Kimberly-Clark Corporation | Digital information recording media and method of using same |
US5681380A (en) * | 1995-06-05 | 1997-10-28 | Kimberly-Clark Worldwide, Inc. | Ink for ink jet printers |
US5685754A (en) * | 1994-06-30 | 1997-11-11 | Kimberly-Clark Corporation | Method of generating a reactive species and polymer coating applications therefor |
US5700850A (en) * | 1993-08-05 | 1997-12-23 | Kimberly-Clark Worldwide | Colorant compositions and colorant stabilizers |
US5721287A (en) * | 1993-08-05 | 1998-02-24 | Kimberly-Clark Worldwide, Inc. | Method of mutating a colorant by irradiation |
US5733693A (en) * | 1993-08-05 | 1998-03-31 | Kimberly-Clark Worldwide, Inc. | Method for improving the readability of data processing forms |
US5739175A (en) * | 1995-06-05 | 1998-04-14 | Kimberly-Clark Worldwide, Inc. | Photoreactor composition containing an arylketoalkene wavelength-specific sensitizer |
US5747550A (en) * | 1995-06-05 | 1998-05-05 | Kimberly-Clark Worldwide, Inc. | Method of generating a reactive species and polymerizing an unsaturated polymerizable material |
US5773182A (en) * | 1993-08-05 | 1998-06-30 | Kimberly-Clark Worldwide, Inc. | Method of light stabilizing a colorant |
US5782963A (en) * | 1996-03-29 | 1998-07-21 | Kimberly-Clark Worldwide, Inc. | Colorant stabilizers |
US5786132A (en) * | 1995-06-05 | 1998-07-28 | Kimberly-Clark Corporation | Pre-dyes, mutable dye compositions, and methods of developing a color |
US5798015A (en) * | 1995-06-05 | 1998-08-25 | Kimberly-Clark Worldwide, Inc. | Method of laminating a structure with adhesive containing a photoreactor composition |
US5811199A (en) * | 1995-06-05 | 1998-09-22 | Kimberly-Clark Worldwide, Inc. | Adhesive compositions containing a photoreactor composition |
US5837429A (en) * | 1995-06-05 | 1998-11-17 | Kimberly-Clark Worldwide | Pre-dyes, pre-dye compositions, and methods of developing a color |
US5849411A (en) * | 1995-06-05 | 1998-12-15 | Kimberly-Clark Worldwide, Inc. | Polymer film, nonwoven web and fibers containing a photoreactor composition |
US5855655A (en) * | 1996-03-29 | 1999-01-05 | Kimberly-Clark Worldwide, Inc. | Colorant stabilizers |
US5865471A (en) * | 1993-08-05 | 1999-02-02 | Kimberly-Clark Worldwide, Inc. | Photo-erasable data processing forms |
US5885337A (en) * | 1995-11-28 | 1999-03-23 | Nohr; Ronald Sinclair | Colorant stabilizers |
US5891229A (en) * | 1996-03-29 | 1999-04-06 | Kimberly-Clark Worldwide, Inc. | Colorant stabilizers |
US6008268A (en) * | 1994-10-21 | 1999-12-28 | Kimberly-Clark Worldwide, Inc. | Photoreactor composition, method of generating a reactive species, and applications therefor |
US6017471A (en) * | 1993-08-05 | 2000-01-25 | Kimberly-Clark Worldwide, Inc. | Colorants and colorant modifiers |
US6017661A (en) * | 1994-11-09 | 2000-01-25 | Kimberly-Clark Corporation | Temporary marking using photoerasable colorants |
US6033465A (en) * | 1995-06-28 | 2000-03-07 | Kimberly-Clark Worldwide, Inc. | Colorants and colorant modifiers |
US6071979A (en) * | 1994-06-30 | 2000-06-06 | Kimberly-Clark Worldwide, Inc. | Photoreactor composition method of generating a reactive species and applications therefor |
US6099628A (en) * | 1996-03-29 | 2000-08-08 | Kimberly-Clark Worldwide, Inc. | Colorant stabilizers |
US6211383B1 (en) | 1993-08-05 | 2001-04-03 | Kimberly-Clark Worldwide, Inc. | Nohr-McDonald elimination reaction |
US6228157B1 (en) | 1998-07-20 | 2001-05-08 | Ronald S. Nohr | Ink jet ink compositions |
US6242057B1 (en) | 1994-06-30 | 2001-06-05 | Kimberly-Clark Worldwide, Inc. | Photoreactor composition and applications therefor |
US6265458B1 (en) | 1998-09-28 | 2001-07-24 | Kimberly-Clark Worldwide, Inc. | Photoinitiators and applications therefor |
US6277897B1 (en) | 1998-06-03 | 2001-08-21 | Kimberly-Clark Worldwide, Inc. | Photoinitiators and applications therefor |
US6294698B1 (en) | 1999-04-16 | 2001-09-25 | Kimberly-Clark Worldwide, Inc. | Photoinitiators and applications therefor |
US6331056B1 (en) | 1999-02-25 | 2001-12-18 | Kimberly-Clark Worldwide, Inc. | Printing apparatus and applications therefor |
US6368396B1 (en) | 1999-01-19 | 2002-04-09 | Kimberly-Clark Worldwide, Inc. | Colorants, colorant stabilizers, ink compositions, and improved methods of making the same |
US6368395B1 (en) | 1999-05-24 | 2002-04-09 | Kimberly-Clark Worldwide, Inc. | Subphthalocyanine colorants, ink compositions, and method of making the same |
US6486227B2 (en) | 2000-06-19 | 2002-11-26 | Kimberly-Clark Worldwide, Inc. | Zinc-complex photoinitiators and applications therefor |
US6503559B1 (en) | 1998-06-03 | 2003-01-07 | Kimberly-Clark Worldwide, Inc. | Neonanoplasts and microemulsion technology for inks and ink jet printing |
US6524379B2 (en) | 1997-08-15 | 2003-02-25 | Kimberly-Clark Worldwide, Inc. | Colorants, colorant stabilizers, ink compositions, and improved methods of making the same |
-
0
- BE BE439901D patent/BE439901A/xx unknown
- NL NL54339D patent/NL54339C/xx active
-
1940
- 1940-10-29 CH CH220433D patent/CH220433A/de unknown
- 1940-10-29 CH CH218097D patent/CH218097A/de unknown
- 1940-11-14 US US365652A patent/US2281895A/en not_active Expired - Lifetime
-
1941
- 1941-02-24 FR FR870244D patent/FR870244A/fr not_active Expired
Cited By (63)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3285744A (en) * | 1963-04-04 | 1966-11-15 | Horizons Inc | Photography |
US3527639A (en) * | 1965-09-30 | 1970-09-08 | Kalle Ag | Light-sensitive composition utilizing anthraquinone derivatives as optical sensitizers |
US3892569A (en) * | 1972-12-04 | 1975-07-01 | Gen Film Dev Corp | Photosensitive sheets comprising organic dyes and sensitizers |
US4251622A (en) * | 1973-05-25 | 1981-02-17 | Nippon Paint Co., Ltd. | Photo-sensitive composition for dry formation of image |
JPS50131517A (fr) * | 1974-04-03 | 1975-10-17 | ||
US4241166A (en) * | 1978-02-24 | 1980-12-23 | Hoechst Aktiengesellschaft | Photopolymerizable composition comprising a monoazo dye as contrast colorant |
US6127073A (en) * | 1993-08-05 | 2000-10-03 | Kimberly-Clark Worldwide, Inc. | Method for concealing information and document for securely communicating concealed information |
US6211383B1 (en) | 1993-08-05 | 2001-04-03 | Kimberly-Clark Worldwide, Inc. | Nohr-McDonald elimination reaction |
US5643701A (en) * | 1993-08-05 | 1997-07-01 | Kimberly-Clark Corporation | Electrophotgraphic process utilizing mutable colored composition |
US5645964A (en) * | 1993-08-05 | 1997-07-08 | Kimberly-Clark Corporation | Digital information recording media and method of using same |
US6017471A (en) * | 1993-08-05 | 2000-01-25 | Kimberly-Clark Worldwide, Inc. | Colorants and colorant modifiers |
US5683843A (en) * | 1993-08-05 | 1997-11-04 | Kimberly-Clark Corporation | Solid colored composition mutable by ultraviolet radiation |
US5908495A (en) * | 1993-08-05 | 1999-06-01 | Nohr; Ronald Sinclair | Ink for ink jet printers |
US6060223A (en) * | 1993-08-05 | 2000-05-09 | Kimberly-Clark Worldwide, Inc. | Plastic article for colored printing and method for printing on a colored plastic article |
US5700850A (en) * | 1993-08-05 | 1997-12-23 | Kimberly-Clark Worldwide | Colorant compositions and colorant stabilizers |
US6060200A (en) * | 1993-08-05 | 2000-05-09 | Kimberly-Clark Worldwide, Inc. | Photo-erasable data processing forms and methods |
US5721287A (en) * | 1993-08-05 | 1998-02-24 | Kimberly-Clark Worldwide, Inc. | Method of mutating a colorant by irradiation |
US5733693A (en) * | 1993-08-05 | 1998-03-31 | Kimberly-Clark Worldwide, Inc. | Method for improving the readability of data processing forms |
US5865471A (en) * | 1993-08-05 | 1999-02-02 | Kimberly-Clark Worldwide, Inc. | Photo-erasable data processing forms |
US5858586A (en) * | 1993-08-05 | 1999-01-12 | Kimberly-Clark Corporation | Digital information recording media and method of using same |
US5773182A (en) * | 1993-08-05 | 1998-06-30 | Kimberly-Clark Worldwide, Inc. | Method of light stabilizing a colorant |
US6054256A (en) * | 1993-08-05 | 2000-04-25 | Kimberly-Clark Worldwide, Inc. | Method and apparatus for indicating ultraviolet light exposure |
US5643356A (en) * | 1993-08-05 | 1997-07-01 | Kimberly-Clark Corporation | Ink for ink jet printers |
US5616443A (en) * | 1993-08-05 | 1997-04-01 | Kimberly-Clark Corporation | Substrate having a mutable colored composition thereon |
US6120949A (en) * | 1993-08-05 | 2000-09-19 | Kimberly-Clark Worldwide, Inc. | Photoerasable paint and method for using photoerasable paint |
US6066439A (en) * | 1993-08-05 | 2000-05-23 | Kimberly-Clark Worldwide, Inc. | Instrument for photoerasable marking |
US6342305B1 (en) | 1993-09-10 | 2002-01-29 | Kimberly-Clark Corporation | Colorants and colorant modifiers |
US6071979A (en) * | 1994-06-30 | 2000-06-06 | Kimberly-Clark Worldwide, Inc. | Photoreactor composition method of generating a reactive species and applications therefor |
US6090236A (en) * | 1994-06-30 | 2000-07-18 | Kimberly-Clark Worldwide, Inc. | Photocuring, articles made by photocuring, and compositions for use in photocuring |
US6242057B1 (en) | 1994-06-30 | 2001-06-05 | Kimberly-Clark Worldwide, Inc. | Photoreactor composition and applications therefor |
US5709955A (en) * | 1994-06-30 | 1998-01-20 | Kimberly-Clark Corporation | Adhesive composition curable upon exposure to radiation and applications therefor |
US5686503A (en) * | 1994-06-30 | 1997-11-11 | Kimberly-Clark Corporation | Method of generating a reactive species and applications therefor |
US5685754A (en) * | 1994-06-30 | 1997-11-11 | Kimberly-Clark Corporation | Method of generating a reactive species and polymer coating applications therefor |
US6008268A (en) * | 1994-10-21 | 1999-12-28 | Kimberly-Clark Worldwide, Inc. | Photoreactor composition, method of generating a reactive species, and applications therefor |
US6017661A (en) * | 1994-11-09 | 2000-01-25 | Kimberly-Clark Corporation | Temporary marking using photoerasable colorants |
US6235095B1 (en) | 1994-12-20 | 2001-05-22 | Ronald Sinclair Nohr | Ink for inkjet printers |
US5786132A (en) * | 1995-06-05 | 1998-07-28 | Kimberly-Clark Corporation | Pre-dyes, mutable dye compositions, and methods of developing a color |
US5681380A (en) * | 1995-06-05 | 1997-10-28 | Kimberly-Clark Worldwide, Inc. | Ink for ink jet printers |
US6063551A (en) * | 1995-06-05 | 2000-05-16 | Kimberly-Clark Worldwide, Inc. | Mutable dye composition and method of developing a color |
US5739175A (en) * | 1995-06-05 | 1998-04-14 | Kimberly-Clark Worldwide, Inc. | Photoreactor composition containing an arylketoalkene wavelength-specific sensitizer |
US5849411A (en) * | 1995-06-05 | 1998-12-15 | Kimberly-Clark Worldwide, Inc. | Polymer film, nonwoven web and fibers containing a photoreactor composition |
US5747550A (en) * | 1995-06-05 | 1998-05-05 | Kimberly-Clark Worldwide, Inc. | Method of generating a reactive species and polymerizing an unsaturated polymerizable material |
US5811199A (en) * | 1995-06-05 | 1998-09-22 | Kimberly-Clark Worldwide, Inc. | Adhesive compositions containing a photoreactor composition |
US5798015A (en) * | 1995-06-05 | 1998-08-25 | Kimberly-Clark Worldwide, Inc. | Method of laminating a structure with adhesive containing a photoreactor composition |
US5837429A (en) * | 1995-06-05 | 1998-11-17 | Kimberly-Clark Worldwide | Pre-dyes, pre-dye compositions, and methods of developing a color |
US6033465A (en) * | 1995-06-28 | 2000-03-07 | Kimberly-Clark Worldwide, Inc. | Colorants and colorant modifiers |
US6168655B1 (en) | 1995-11-28 | 2001-01-02 | Kimberly-Clark Worldwide, Inc. | Colorant stabilizers |
US5885337A (en) * | 1995-11-28 | 1999-03-23 | Nohr; Ronald Sinclair | Colorant stabilizers |
US5782963A (en) * | 1996-03-29 | 1998-07-21 | Kimberly-Clark Worldwide, Inc. | Colorant stabilizers |
US6168654B1 (en) | 1996-03-29 | 2001-01-02 | Kimberly-Clark Worldwide, Inc. | Colorant stabilizers |
US6099628A (en) * | 1996-03-29 | 2000-08-08 | Kimberly-Clark Worldwide, Inc. | Colorant stabilizers |
US5855655A (en) * | 1996-03-29 | 1999-01-05 | Kimberly-Clark Worldwide, Inc. | Colorant stabilizers |
US5891229A (en) * | 1996-03-29 | 1999-04-06 | Kimberly-Clark Worldwide, Inc. | Colorant stabilizers |
US6524379B2 (en) | 1997-08-15 | 2003-02-25 | Kimberly-Clark Worldwide, Inc. | Colorants, colorant stabilizers, ink compositions, and improved methods of making the same |
US6277897B1 (en) | 1998-06-03 | 2001-08-21 | Kimberly-Clark Worldwide, Inc. | Photoinitiators and applications therefor |
US6503559B1 (en) | 1998-06-03 | 2003-01-07 | Kimberly-Clark Worldwide, Inc. | Neonanoplasts and microemulsion technology for inks and ink jet printing |
US6228157B1 (en) | 1998-07-20 | 2001-05-08 | Ronald S. Nohr | Ink jet ink compositions |
US6265458B1 (en) | 1998-09-28 | 2001-07-24 | Kimberly-Clark Worldwide, Inc. | Photoinitiators and applications therefor |
US6368396B1 (en) | 1999-01-19 | 2002-04-09 | Kimberly-Clark Worldwide, Inc. | Colorants, colorant stabilizers, ink compositions, and improved methods of making the same |
US6331056B1 (en) | 1999-02-25 | 2001-12-18 | Kimberly-Clark Worldwide, Inc. | Printing apparatus and applications therefor |
US6294698B1 (en) | 1999-04-16 | 2001-09-25 | Kimberly-Clark Worldwide, Inc. | Photoinitiators and applications therefor |
US6368395B1 (en) | 1999-05-24 | 2002-04-09 | Kimberly-Clark Worldwide, Inc. | Subphthalocyanine colorants, ink compositions, and method of making the same |
US6486227B2 (en) | 2000-06-19 | 2002-11-26 | Kimberly-Clark Worldwide, Inc. | Zinc-complex photoinitiators and applications therefor |
Also Published As
Publication number | Publication date |
---|---|
NL54339C (fr) | |
BE439901A (fr) | |
CH218097A (de) | 1941-11-30 |
CH220433A (de) | 1942-03-31 |
FR870244A (fr) | 1942-03-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2281895A (en) | Light sensitive material | |
US2049005A (en) | Color-photographic bleach out dyestuff layers | |
US2054390A (en) | Photographic bleachjng-out layers | |
US2350090A (en) | Photographic layers containing dyestuffs | |
US2378583A (en) | Photographic printing material | |
US2294893A (en) | Dye for photographic layers | |
US3053655A (en) | Photographic material and process | |
US2635535A (en) | Mordanting | |
US2659672A (en) | Diazotype photoprinting materials | |
US3169869A (en) | Diazotype material | |
US1966412A (en) | Multicolor film and process of preparing it | |
US3582342A (en) | Light-sensitive photographic materials | |
US2172307A (en) | Process for the manufacture of colored photographic materials and material therefor | |
US2063348A (en) | Method of making a colored photographic image | |
US3052542A (en) | Intermediate master for use in the diazotype process and a process for producing same | |
US2688538A (en) | Photographic elements and process of color correction utilizing styryl dyes as couplers | |
US2545057A (en) | Diazotypes containing resorcinol sulfonic acids as coupling components | |
US2487034A (en) | 2.8-dihydroxynaphthalene-6-sulfonic acid as the azo component for diazotype prints | |
US2681856A (en) | Photographic material and process for making an azo dye bleachout image | |
US1918623A (en) | Multicolored pictures | |
GB178828A (en) | Photographic print-out paper and prints made therefrom | |
US2166049A (en) | Method of and material for producing multicolor images | |
US1968956A (en) | Colored photographic image and method of producing same | |
US2061688A (en) | Manufacture of direct positives for autotype | |
US3738846A (en) | Fogged direct positive silver halide emulsion containing a sulfonatedtriphenylmethane dye |