US3716361A - Process of forming silver transfer images - Google Patents
Process of forming silver transfer images Download PDFInfo
- Publication number
- US3716361A US3716361A US00080151A US3716361DA US3716361A US 3716361 A US3716361 A US 3716361A US 00080151 A US00080151 A US 00080151A US 3716361D A US3716361D A US 3716361DA US 3716361 A US3716361 A US 3716361A
- Authority
- US
- United States
- Prior art keywords
- poly
- silver halide
- silver
- image
- process according
- 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
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 91
- 239000004332 silver Substances 0.000 title claims abstract description 91
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 35
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000002253 acid Substances 0.000 claims abstract description 14
- 238000009792 diffusion process Methods 0.000 claims abstract description 13
- 150000003839 salts Chemical class 0.000 claims abstract description 11
- -1 silver halide Chemical class 0.000 claims description 77
- 239000000839 emulsion Substances 0.000 claims description 35
- 150000001875 compounds Chemical class 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- 239000008139 complexing agent Substances 0.000 claims description 10
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 claims description 9
- ISAKRJDGNUQOIC-UHFFFAOYSA-N Uracil Chemical group O=C1C=CNC(=O)N1 ISAKRJDGNUQOIC-UHFFFAOYSA-N 0.000 claims description 8
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 4
- 229940035893 uracil Drugs 0.000 claims description 4
- 150000004985 diamines Chemical class 0.000 claims description 3
- 229920000768 polyamine Polymers 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 3
- CCVYRRGZDBSHFU-UHFFFAOYSA-N (2-hydroxyphenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC=C1O CCVYRRGZDBSHFU-UHFFFAOYSA-N 0.000 claims 2
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 claims 1
- JYXGIOKAKDAARW-UHFFFAOYSA-N N-(2-hydroxyethyl)iminodiacetic acid Chemical compound OCCN(CC(O)=O)CC(O)=O JYXGIOKAKDAARW-UHFFFAOYSA-N 0.000 claims 1
- 150000001735 carboxylic acids Chemical class 0.000 claims 1
- 229940093476 ethylene glycol Drugs 0.000 claims 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract description 7
- 150000002443 hydroxylamines Chemical class 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005286 illumination Methods 0.000 abstract description 2
- 239000003352 sequestering agent Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 25
- 125000002947 alkylene group Chemical group 0.000 description 8
- 239000012530 fluid Substances 0.000 description 8
- 229940125904 compound 1 Drugs 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 125000000217 alkyl group Chemical group 0.000 description 6
- 125000003710 aryl alkyl group Chemical group 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 5
- XRWSZZJLZRKHHD-WVWIJVSJSA-N asunaprevir Chemical compound O=C([C@@H]1C[C@H](CN1C(=O)[C@@H](NC(=O)OC(C)(C)C)C(C)(C)C)OC1=NC=C(C2=CC=C(Cl)C=C21)OC)N[C@]1(C(=O)NS(=O)(=O)C2CC2)C[C@H]1C=C XRWSZZJLZRKHHD-WVWIJVSJSA-N 0.000 description 5
- 229940125961 compound 24 Drugs 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- GHYOCDFICYLMRF-UTIIJYGPSA-N (2S,3R)-N-[(2S)-3-(cyclopenten-1-yl)-1-[(2R)-2-methyloxiran-2-yl]-1-oxopropan-2-yl]-3-hydroxy-3-(4-methoxyphenyl)-2-[[(2S)-2-[(2-morpholin-4-ylacetyl)amino]propanoyl]amino]propanamide Chemical compound C1(=CCCC1)C[C@@H](C(=O)[C@@]1(OC1)C)NC([C@H]([C@@H](C1=CC=C(C=C1)OC)O)NC([C@H](C)NC(CN1CCOCC1)=O)=O)=O GHYOCDFICYLMRF-UTIIJYGPSA-N 0.000 description 3
- OJRUSAPKCPIVBY-KQYNXXCUSA-N C1=NC2=C(N=C(N=C2N1[C@H]3[C@@H]([C@@H]([C@H](O3)COP(=O)(CP(=O)(O)O)O)O)O)I)N Chemical compound C1=NC2=C(N=C(N=C2N1[C@H]3[C@@H]([C@@H]([C@H](O3)COP(=O)(CP(=O)(O)O)O)O)O)I)N OJRUSAPKCPIVBY-KQYNXXCUSA-N 0.000 description 3
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 229940125773 compound 10 Drugs 0.000 description 3
- 229940125797 compound 12 Drugs 0.000 description 3
- 229940125758 compound 15 Drugs 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- ZLVXBBHTMQJRSX-VMGNSXQWSA-N jdtic Chemical compound C1([C@]2(C)CCN(C[C@@H]2C)C[C@H](C(C)C)NC(=O)[C@@H]2NCC3=CC(O)=CC=C3C2)=CC=CC(O)=C1 ZLVXBBHTMQJRSX-VMGNSXQWSA-N 0.000 description 3
- 159000000000 sodium salts Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CWLUFVAFWWNXJZ-UHFFFAOYSA-N 1-hydroxypyrrolidine Chemical compound ON1CCCC1 CWLUFVAFWWNXJZ-UHFFFAOYSA-N 0.000 description 2
- OURXRFYZEOUCRM-UHFFFAOYSA-N 4-hydroxymorpholine Chemical compound ON1CCOCC1 OURXRFYZEOUCRM-UHFFFAOYSA-N 0.000 description 2
- 229920001174 Diethylhydroxylamine Polymers 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 125000002993 cycloalkylene group Chemical group 0.000 description 2
- FVCOIAYSJZGECG-UHFFFAOYSA-N diethylhydroxylamine Chemical compound CCN(O)CC FVCOIAYSJZGECG-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical group 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- LKPFBGKZCCBZDK-UHFFFAOYSA-N n-hydroxypiperidine Chemical compound ON1CCCCC1 LKPFBGKZCCBZDK-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 125000000547 substituted alkyl group Chemical group 0.000 description 2
- 125000003107 substituted aryl group Chemical group 0.000 description 2
- 150000004763 sulfides Chemical class 0.000 description 2
- YUKQRDCYNOVPGJ-UHFFFAOYSA-N thioacetamide Chemical class CC(N)=S YUKQRDCYNOVPGJ-UHFFFAOYSA-N 0.000 description 2
- UDATXMIGEVPXTR-UHFFFAOYSA-N 1,2,4-triazolidine-3,5-dione Chemical compound O=C1NNC(=O)N1 UDATXMIGEVPXTR-UHFFFAOYSA-N 0.000 description 1
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 description 1
- BDDLHHRCDSJVKV-UHFFFAOYSA-N 7028-40-2 Chemical compound CC(O)=O.CC(O)=O.CC(O)=O.CC(O)=O BDDLHHRCDSJVKV-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 101150007919 Gper1 gene Proteins 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical group Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 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 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000004133 Sodium thiosulphate Substances 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical group O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- ABRVLXLNVJHDRQ-UHFFFAOYSA-N [2-pyridin-3-yl-6-(trifluoromethyl)pyridin-4-yl]methanamine Chemical compound FC(C1=CC(=CC(=N1)C=1C=NC=CC=1)CN)(F)F ABRVLXLNVJHDRQ-UHFFFAOYSA-N 0.000 description 1
- SJOOOZPMQAWAOP-UHFFFAOYSA-N [Ag].BrCl Chemical compound [Ag].BrCl SJOOOZPMQAWAOP-UHFFFAOYSA-N 0.000 description 1
- HOLVRJRSWZOAJU-UHFFFAOYSA-N [Ag].ICl Chemical compound [Ag].ICl HOLVRJRSWZOAJU-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 150000001241 acetals Chemical class 0.000 description 1
- 125000002015 acyclic group Chemical group 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229940072056 alginate Drugs 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 125000005083 alkoxyalkoxy group Chemical group 0.000 description 1
- 125000004414 alkyl thio group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- CREXVNNSNOKDHW-UHFFFAOYSA-N azaniumylideneazanide Chemical group N[N] CREXVNNSNOKDHW-UHFFFAOYSA-N 0.000 description 1
- HNYOPLTXPVRDBG-UHFFFAOYSA-N barbituric acid Chemical compound O=C1CC(=O)NC(=O)N1 HNYOPLTXPVRDBG-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- JIRRNZWTWJGJCT-UHFFFAOYSA-N carbamothioylthiourea Chemical compound NC(=S)NC(N)=S JIRRNZWTWJGJCT-UHFFFAOYSA-N 0.000 description 1
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 description 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 229920006217 cellulose acetate butyrate Polymers 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- OAEGRYMCJYIXQT-UHFFFAOYSA-N dithiooxamide Chemical compound NC(=S)C(N)=S OAEGRYMCJYIXQT-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229920000591 gum Polymers 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- CBEQRNSPHCCXSH-UHFFFAOYSA-N iodine monobromide Chemical compound IBr CBEQRNSPHCCXSH-UHFFFAOYSA-N 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 1
- XCAUINMIESBTBL-UHFFFAOYSA-N lead(ii) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 239000011185 multilayer composite material Substances 0.000 description 1
- ZHFBNFIXRMDULI-UHFFFAOYSA-N n,n-bis(2-ethoxyethyl)hydroxylamine Chemical compound CCOCCN(O)CCOCC ZHFBNFIXRMDULI-UHFFFAOYSA-N 0.000 description 1
- XWRQNCOJINWNEU-UHFFFAOYSA-N n-(2-ethoxyethyl)-n-ethylhydroxylamine Chemical compound CCOCCN(O)CC XWRQNCOJINWNEU-UHFFFAOYSA-N 0.000 description 1
- CMWTZPSULFXXJA-VIFPVBQESA-N naproxen Chemical group C1=C([C@H](C)C(O)=O)C=CC2=CC(OC)=CC=C21 CMWTZPSULFXXJA-VIFPVBQESA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000009994 optical bleaching Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 150000003346 selenoethers Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- ZUNKMNLKJXRCDM-UHFFFAOYSA-N silver bromoiodide Chemical compound [Ag].IBr ZUNKMNLKJXRCDM-UHFFFAOYSA-N 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- NVIFVTYDZMXWGX-UHFFFAOYSA-N sodium metaborate Chemical compound [Na+].[O-]B=O NVIFVTYDZMXWGX-UHFFFAOYSA-N 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- VGTPCRGMBIAPIM-UHFFFAOYSA-M sodium thiocyanate Chemical compound [Na+].[S-]C#N VGTPCRGMBIAPIM-UHFFFAOYSA-M 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 125000005717 substituted cycloalkylene group Chemical group 0.000 description 1
- DLFVBJFMPXGRIB-UHFFFAOYSA-N thioacetamide Natural products CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 1
- 150000003567 thiocyanates Chemical class 0.000 description 1
- 150000003585 thioureas Chemical class 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 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
- G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
- G03C8/24—Photosensitive materials characterised by the image-receiving section
- G03C8/26—Image-receiving layers
- G03C8/28—Image-receiving layers containing development nuclei or compounds forming such nuclei
-
- 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
- G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
- G03C8/02—Photosensitive materials characterised by the image-forming section
- G03C8/04—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
- G03C8/06—Silver salt diffusion transfer
Definitions
- the superposed elements i.'e., the photosensitive element and the image-receiving element are guided between a pair of pressure rollers whereby the viscous processing liquid is spread as a uniform layer between the photosensitive element and the image-receiving element.
- the photosensitive element and the image-receiving element are maintained in superposed relation for a determined period, usually of the order of 10 to 120 seconds, during which the exposed.
- silver halide is developed, the undeveloped silver halide is converted into a water-soluble complex silver salt and the said complex is transferred through the layer of processing liquid to the silver precipitating layer of the imagedevelopment activity is higher than that of the N,N-dialkylhydroxylamines include for example aminoalkylhydroxylamines, more especially N,N-dialkylhydroxylamines having in at least one of the N-alkyl groups an intralinear amino nitrogen atom, either cyclic or acyclic, examples of which can be found in US. Pat. No. 3,287,125, of Milton Green, Adnan A.
- a process of forming silver transfer -images which comprises the steps of exposing a receiving element where it is converted into a visible print. At the end of this contact period the photosensitive element is separated by stripping from the imagereceiving element.
- dialkylhydroxylamines such as N,N-'diethylhydroxylamine and the heterocyclic N-hydroxylamines such as N-hyd roxymorpholine, N-hydroxypiperidine and N- hydroxypyrrolidine disclosed in the above US. Pat specification are particularly suitable.
- hydroxylamine derivatives that have been-proposed for use as silver halide developing agents and of which the photosensitive element containing a silver halide emulsion layer and a (poly)amino(poly) carboxylic acid sequestering compound, in acid form or in the form of a water-soluble salt, developing the exposed photosensitive silver halide emulsion layer and forming a soluble silver complex of unexposed silver halide by treating the said photosensitive silverhalide emulsion layer with an alkaline processing fluid in the presence of a hydroxylamine developing agent and a silver halide complexing agent, transferring said soluble silver complex by diffusion to the silver receptive layer of an imagereceiving element in superposed relationship with said silver halide emulsion, forming at said silver receptive layer' an image incorporating silver from said silver complex, and separating said image-receiving element from said photosensitive element.
- alkylene including substituted alkylene e.g., hydroxyalkylene, cycloalkylene including substituted cycloalkylene or alkylene interrupted by one or more hetero atoms, such as an oxygen atom,
- x 0, l or 2
- R stands for lower alkylenee.g.,- methylene and ethylene including substituted lower alkylene e.g., alkylene substituted by alkyl, aryl, aralkyl, including substituted alkyl, aryl and aralkyl, and
- each of R and R stands for hydrogen, lower alkyl including substituted lower alkyl, aralkylincluding substituted aralkyl or aryl including substituted aryl;
- substituted alkyl groups for R and for R are'alkyl substituted with hydroxyl, halogen, alkoxy, carbamoyl, amino, substituted amino e.g., v dihydroxyalkylamino,
- R aryl and aralkyl substituted by hydroxyl, halogen, alkyl, alkoxy, nitro, carboxyl and sulpho.
- the said compounds are presentin the photosensitive element.
- These compounds may be located in the silver halide emulsion layer of said element .or in a layer in bromoiodide, silver chloroiodide, silver chlorobromide, silver chlorobromoiodide, etc.
- These silver halide emulsions can contain spectral sensitizers, speedincreasing addenda, hardeners, coating aids, antifoggants, plasticizers and the like conventional emulsion addenda.
- the photosensitive silver .halide element may also comprise in the silver halide emulsion layer or in a layer in water-permeable relationship with the said emulsion .layer, compounds having a favorable effect on the maximum density of the image formed and/or in the speed of the photosensitive element.
- these compounds are the l-aryl-3-pyrazolidinone compounds ex-. amples of which can be found in the application for Silver Complex Diffusion Transfer Process filed on even date herewith United Kingdom Patent applica-' tionNo. 52,572/69), as well as diamine or polyamine' compounds and mor'pholine derivatives, typical examples of which are the compounds represented bythe following formulas:
- processing occurs with an alkaline processing liquid in the presence of a silver halide complexing agent and a hydroxylamine developing m0 CH; on on on .agent.
- a silver halide complexing agent and a hydroxylamine developing m0 CH; on on on .agent.
- These agents are preferably present in the processing liquid itself although it is also possible to incorporate them in the photosensitive or image-receiving element.
- the hydroxylamine derivatives can be incorporated in the said elements in the form of acid salts thereof e.g., in hydrochloride or hydrobromide form.
- the developing and/or silver complexing agents When the developing and/or silver complexing agents are incorporated in the photosensitive and/or image-receiving element, the development of the exposed silver halide and the formation of the silver complex of unexposed silver halide is activated whenthe alkaline processing fluid is spread as a thin layer between the photosensitive element and the image-receiving element.
- Silver halide complexing agents suitable for use in diffusion transfer processes are well known in the art and include alkali metal thiosulphates and thiocyanates, such as sodium thiosulphate and sodium thiocyanate.
- Silver halide complexing agents that are particularly suitable for use in accordance with the present invention are cyclic imides for example barbituric acid, uracil and urazole as well as derivatives thereof, examples of which can be found in US. Pat. No. 2,857,276 mentioned above.
- hydroxylamine developing agents that are particularly suitable, mention may be made of the heterocyclic N-hydroxylamines such as N-hydroxymorpholine, N-hydroxy piperidine and N- hydroxy pyrrolidine, the primary and secondary N- lower alkyl hydroxylamines such as N,N-diethylhydroxylamine, the alkoxy-substituted derivatives thereof such as N,N-di(2-ethoxyethyl) hydroxylamine and N- ethyl-N-(2-ethoxyethyl)-hydroxylamine, the sulphonehydroxylamines such as N-m'ethyl-N-2-ethylsulphonylethyl hydroxylamine and bis-2-(methyl-hydroxylamino)-ethyl sulphone and the aminoalkyl hydroxylamines such as N-methyl-N-2-dirnethylaminoethylhydroxylamine. Further examples of such hydroxylamine derivatives can be found in'the
- the processing fluid comprises bases imparting to the fluid the required alkalinity.
- bases e.g., sodium and potassium hydroxide, sodium carbonate, borax, sodium metaborate, trisodium phosphate, etc.
- the fluid may further contain, or dissolve in its travel to the photosensitive element, other compounds which plastic so that when the liquid isremoved from the processing layer by absorption and/or evaporation there remains a solid plastic film.
- the .film-forming plastic may be any-of the high molecular weight polymers which are stable to alkali and which are soluble in aqueous alkaline solutions e.g.,' hydroxyethylcellulose, starch or gum, polyvinylalcohol, the sodium salts of polymethacrylic acid and polyacrylic acid, sodi-. um alginate, sodium carboxymethyl cellulose.
- stripping of the silver halide element from the image-receiving element may separate the solidified layer of processing composition from the image-receiving element or may permit the layer of processing composition to remain in contact withthe image-receiving element so that the solidified layer provides a protective coating over the image obtained.
- the viscous processing fluid for use in in-camera processing is preferably confined within a hermetically sealed container or pod which is positioned between the p otosensitive element and the image-receiving element and which is ruptured and releases its contents receptive element'between a pair of pressure-rollers.
- a container is impervious to the processing'liquid and to the vapor of said liquidQand may be formed of a multilayer composite material comprising as inner layer in contact with the liquid, a material which is impervious to the liquid as intermediate layer a substance which is impervious to the vapor of said liquid and as outer layer a material merely serving as a backing or support.
- the container is formed of a multilayer material whose inner layer is formed of a plastic such as polyvinyl acetal e.g., polyvinyl butyral, polymeric esters such as cellulose acetate, cellulose acetate butyrate, polyvinyl acetate, polyvinyl chloride, etc. said layer being backed by a metal foil e.g., a lead foil or lead-tin foil which is impervious to the vapors of upon advancing the photosensitive element and imagesaid solution.
- a plastic such as polyvinyl acetal e.g., polyvinyl butyral, polymeric esters such as cellulose acetate, cellulose acetate butyrate, polyvinyl acetate, polyvinyl chloride, etc.
- a metal foil e.g., a lead foil or lead-tin foil which is impervious to the vapors of upon advancing the photosensitive element and imagesaid solution.
- the containers may be strengthened by a more rapid backing material such as kraft paper or a plastic such as polyvinyl acetate and polyvinyl chloride; More details as to the construction of such a ru'pturable container can be found amongst others in US. Pat. No. 2,634,886 of Edwin H. Land, issued Apr. 14, 1953.
- the silver halide emulsion layer and/or the imagereceiving layer may be coated on opaque'or transparent supports. ln this way it is possible to exposethe photosensitive element from either side as desired and it is possible to form either reflection prints or transparencies.
- the image-receiving layer of the image-receiving element preferably comprisesmentioned, promoting precipitation of the silver from the transferred silver complex.
- agents called development nuclei or shortly nuclei, are'well known andinclude sulphides, selenides, polysulph'ides, polyselenides, thioureas, thioacetamides, mercaptans, stannous halides, heavy metals or their salts and fogged silver halide.
- Sulphides of heavy metals' such as of antimony
- gold, platinum, palladium and mercury are to be mentioned preferably in colloidal form.
- the development nuclei may be associatedwith a granular, inorganic, water-soluble, substantially chemically inert substance such as silica as vehicle for the said nuclei whereby aggregation of the precipitated silver is promoted.
- the image-receiving element may also be incorporated which play a part in the formation of the diffusion transferimage e.g., black-toning agents, anti-yellowing agents, optical bleaching agents, softening agents, etc.
- the image-receiving element may be constructed as described in US. Pat. No. 2,823,] l2'of Edwin H. Land, issued Feb. ll, 1958.
- the print-receiving element is so constructed that the viscous'processing fluid separates therefrom and leaves no droplets or film of developing composition on the print-receiving layer.
- the image-receiving layer is thin, holding a mass of water so small that there is not tactual wetness.'Moreover, by making the print-receiving layer so thin the tendency to curl is also avoided. Consequently, when peeled from the photosensitive element, which carries the viscous processing layer, the image-receiving element appears to be a dry sheet.
- a layer which is substantially impervious to the processing liquid and which may be the liquid-impervious surface of a supporting sheet which is entirely formed of liquid-impervious material is provided between the silver precipitating layer in which the positive is formed, and the remainder of the image-receiving element. Further, the image-receiving layer is provided with a surface from which the viscous film of processing fluid may be readily stripped.
- theouter surface of the image-receiving element contacting the layer of processing composition is so constituted as to have a lesser adhesion for the solid residue of the liquid processing composition than does the photosensitive element.
- the photosensitive. element when stripped from the image-receiving element, carries with it the residue of the processing composition.
- an abrasion resistant coating may be provided between the image-receiving layer and the stripping layer.
- stripping of the silver halide element from the image- 'receiving element separates the layer of processing solution from the image-receiving element.
- a photosensitive element was prepared which com- 200 mg of prises a silver bromoiodide emulsion layer applied to a paper support and containing per kg an amount of silver halide corresponding to 60 g of silver nitrate and. a (poly)amino(poly)carboxylic acid compound as listed in the table below in the amount given.
- the photosensitive element together with an image-receiving element comprising a silver receptive layer containing development nuclei dispersed in a matrix of colloidal silica coated on a water-impervious base according to the practice described in U.S. Pat. No. 2,823,122 of Edwin 1-1.Land,issued Feb. 11,1958, were advanced in superposed relationship between a pair of pressure applying rollers to spread between them in a thin layer a processing composition comprisingper liter:
- Example 1 was repeated with the difference that the photosensitive elements were processed directly after 7 preparation and afterhaving been stored for days at 45C and 15 percent of relative humidity.
- Fresh material Stored material Compound added per kg of emulsion D D Gam- Speed D,,, Gam- Speed m ma none 1.57 0.03 1.73 100 1.59 0.03 1.63 87 50 mg of compound 10 1.53 0.03 1.33 139 1.58 0.03 1.47 112 100 mg of compound 10 1.56 0.03 1.50 136 1.51 0.03 1.11 127 200 mg of compound 10 1.54 0.02 1157 136 1.48 0.03 1.21 130 .50 mg of compound 12 1.55 0.03 2.03 136 1.56 0.03 1.40 115 100 mg of compound 12 1.54 0.03 1.46 '118 compound 12.
- Example 1 was repeated with the difference that the silver halide emulsion layer of the photosensitive ele ment now comprises compound 24 in an amount of 1 g per kgof emulsion.
- the sensitometric results obtained, as compared with the results obtained when no compound 24 is present are the following: 1
- EXAMPLE 5 This example is analogous to Example 1.
- the photosensltlve element accordingto the invention now comprises in the silver halide emulsion layer 500 mg of compound 1 per kg of emulsion.
- a process of forming'silver transfer images which comprises the steps of image-wise exposing a photosensitive element containing a silver halide emulsion layer, developing the exposed silverhalide and forming a soluble silvercomplex of unexposed silver halide by treating the said silver halide emulsion layer with an alkaline processing liquid in the presence of a hydroxylamine developing agent and a silver halide complexing agent, transferring said solublesilver complex-by diffusion to an image-receiving elementin Superposed relationship with said photosensitive element, forming at an image-receiving layer of said imagereceiving element an image incorporating silver from said silver complex, and separating said image-receiving element from said photosensitive element, the use of a photosensitive element which includes in the silver halide emulsion layer or a hydrophilic colloid layer in water-permeable relationship with the said emulsion layer a (poly)amino(poly)carboxylic acid compound inthe acidform or
- L stands for an alkylene group, a cycloalkylene group, or an alkylene group interrupted by one or more hetero atoms
- x 0, l or 2
- R stands for a lower alkylene group
- each of R and R stands for 1 hydrogen, a lower alkyl group,,an aralkyl group or an aryl group.
- the silver halide emulsion layer of the photosensitive element in an amount of from about 30 mg to 15 gper mole of silver halide.
- said photosensitive element also includes a diamine or polyamine compound.
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Abstract
A process for the production of silver images according to the silver complex diffusion transfer process carried out in the presence of a hydroxylamine derivative developing agent and a (poly)amino(poly)carboxylic acid sequestering agent in acid form or in the form of a water-soluble salt is described. Better quality transfer images at substantially lower illumination levels are realized.
Description
United States Patent [191 Thiers et al.
PROCESS OF FORMING SILVER TRANSFER IMAGES Inventors: Robrecht Julius Thiers, Brasschaat; Josef Frans Willems, Urbijk; Roger Alois Spriet, Edegem, all of Belgium Assignee: Gevaert-Agfa N.V.,' Mortsel, Germany Filed: Oct. 12, 1970 Appl. No.: 80,151
Foreign Application Priority Data Oct. 27, 1969 Great Britain 52,57l/69 US. Cl. 96/29 R Int. Cl. ..G03c 5/54 Field of Search .L ..96/29, 76
[ Feb. 13, 1973 [56] References Cited UNITED STATES PATENTS 3,189,454 6/1965 Luckey et al ..96/95 3,458,316 7/ l 969 Viro ..96/94 Primary Examiner-J. Travis Brown Assistant Examiner-John L. Goodrow Attorney-Brufsky, Staas, Breiner and Halsey [57] ABSTRACT 12 Claims, No Drawings PROCESS OF FORMING SILVER TRANSFER IMAGES The present invention relates to the formation of silver images by the silver complex diffusion transfer process.
Processes for forming silver images by the steps of image-wise exposure and development of a photosensitive silver halide element, the formation of a diffusible complex of unexposed-silver halide in the unexposed areas of the said photosensitive element and the transfer by diffusion of said complex to an element, in superposed relationship with the photosensitive elemerit, where the silver of said complex is precipitated image-wise exposure of the photosensitive element,
which comprises a silver halide emulsion layer, the superposed elements i.'e., the photosensitive element and the image-receiving element are guided between a pair of pressure rollers whereby the viscous processing liquid is spread as a uniform layer between the photosensitive element and the image-receiving element.
The photosensitive element and the image-receiving element are maintained in superposed relation for a determined period, usually of the order of 10 to 120 seconds, during which the exposed. silver halide is developed, the undeveloped silver halide is converted into a water-soluble complex silver salt and the said complex is transferred through the layer of processing liquid to the silver precipitating layer of the imagedevelopment activity is higher than that of the N,N-dialkylhydroxylamines include for example aminoalkylhydroxylamines, more especially N,N-dialkylhydroxylamines having in at least one of the N-alkyl groups an intralinear amino nitrogen atom, either cyclic or acyclic, examples of which can be found in US. Pat. No. 3,287,125, of Milton Green, Adnan A. Sayigh and Henri Ulrich, issued Nov. 22, l966, alkoxy hydroxylamines, more especially N,N-dialkyl hydroxylamines of which. at least one of the N-alkyl groups is substituted by alkoxy or alkoxy-alkoxy,-examples of which can be found in U.S. Pat. No. 3,293,034 of Milton Green, Adnan A. Sayigh and Henri Ulrich, issued Dec. 20, 1966 and sulphone hydroxylamines, more especially N,N-dialkyl hydroxylamines having in at least one of the N-alkyl groups an intralinear sulphonyl SO group, examples of which can be found in US.
Pat. No. 3,287,124 of-Milton Green, Adnan A. Sayigh and Henri Ulrich, issued Nov. 22, 1966.
It has now been found when using, in a process for the production of silver images according to the silver complex diffusion transfer process, carried out developing agent, a photosensor element the presence of a hydroxylamine derivative as silverhalide emulsion comprising a silver halide emulsion layer, and a (poly)amino(poly)carboxylic acid sequestering compound, in acid form or in the form of a water-soluble salt, transfer images are obtained of improved quality.
The. {use of (poly)amino(poly)carboxylic acid sequestering compounds, in acid form or in the form of a water-soluble salt, in a silver. complex diffusion transfer process wherein use is made of a hydroxylamine developing agent is effective to give better quality transfer imagesat substantially lower illumination levels than are necessary in the absence of said compounds, without giving rise to a noteworthy decrease in maximum density of the images formed.
Therefore, in accordance with the present invention,
there is provided a process of forming silver transfer -images which comprises the steps of exposing a receiving element where it is converted into a visible print. At the end of this contact period the photosensitive element is separated by stripping from the imagereceiving element. Elements suitable for use in this 1 silver complex diffusion transfer process are described in detail e.g., in US. Pat. No. 2,543,181 of Edwin H. Land, issued Feb. 27, 1951.
A wide variety of silver halide developing agents and silver halide complexing agents, are known for use in such diffusion transfer processes.
As silver halide developing agents it has been proposed amongst others in US. Pat. No. 2,857,276 of Edwin H. Land and Helen J. Tracy, issued Oct. 21, 1958 to use hydroxylamine and derivatives thereof, of which the oxidation products leave no residual stain in the positive silver image obtained. Hydroxylamine itself is less suitable because it gives rise to fog but the N,N-
dialkylhydroxylamines such as N,N-'diethylhydroxylamine and the heterocyclic N-hydroxylamines such as N-hyd roxymorpholine, N-hydroxypiperidine and N- hydroxypyrrolidine disclosed in the above US. Pat specification are particularly suitable. Other hydroxylamine derivatives that have been-proposed for use as silver halide developing agents and of which the photosensitive element containing a silver halide emulsion layer and a (poly)amino(poly) carboxylic acid sequestering compound, in acid form or in the form of a water-soluble salt, developing the exposed photosensitive silver halide emulsion layer and forming a soluble silver complex of unexposed silver halide by treating the said photosensitive silverhalide emulsion layer with an alkaline processing fluid in the presence of a hydroxylamine developing agent and a silver halide complexing agent, transferring said soluble silver complex by diffusion to the silver receptive layer of an imagereceiving element in superposed relationship with said silver halide emulsion, forming at said silver receptive layer' an image incorporating silver from said silver complex, and separating said image-receiving element from said photosensitive element.
Examples of suitable (poly )amino(poly)carboxylic acid sequestering compounds as well as details about the preparation of said sequestering compounds can be found in Ind.Chim.Belg. Tome XXI (1956) p. 338-346 and in Ind.Chirn.Belg. Tome XXIII (1958). p. l,l05l,l15.
Particularly suitable (poly)amino(poly)carboxylic acids for use in acid or salt form in accordance with the present invention can be represented by the following non-limitative general formula:
wherein:
' L stands for alkylene including substituted alkylene e.g., hydroxyalkylene, cycloalkylene including substituted cycloalkylene or alkylene interrupted by one or more hetero atoms, such as an oxygen atom,
x represents 0, l or 2,
R stands for lower alkylenee.g.,- methylene and ethylene including substituted lower alkylene e.g., alkylene substituted by alkyl, aryl, aralkyl, including substituted alkyl, aryl and aralkyl, and
each of R and R (the same or different) stands for hydrogen, lower alkyl including substituted lower alkyl, aralkylincluding substituted aralkyl or aryl including substituted aryl; examples of substituted alkyl groups for R and for R are'alkyl substituted with hydroxyl, halogen, alkoxy, carbamoyl, amino, substituted amino e.g., v dihydroxyalkylamino,
- epoxy, carboxyl, sulpho, phosphono, mercapto, alkylmercapto, alkoxycar'bonyl, a nitrogen-containing heterocyclic ring, e.g., pyridyl and examples of substituted aryl groups and aralkyl groups for R, and/or R are: aryl and aralkyl substituted by hydroxyl, halogen, alkyl, alkoxy, nitro, carboxyl and sulpho.
The following is av non-limitative list of examples of (poly)amino(poly)carboxylie acids corresponding to the above general formula:
1. NaOOCH2C CHz-COONa N-,CHz CHz-N HOOC-H2C CH2COOH ethylenediamine,N,N,N,N-tetraacetic acid disodium salt 2. Hood-mo CH2-COOH u-on-c Hr-N IIOOC-H:C CH CHz-COOH 1,2-pr0pylenediamine,N,N,N,N-tctraacetic acid N-(2-hydroxypropyl)-cthylencdiamlne,N,N-triacctic acid 'no-cnribon cu -coon N-(2,3-dihydroxypropy1)-cthy1enediamine ,N,N ,N-triacetlc acid N-(2-hydroxyetliyl)-N(a-pyridinomcthyl)ethylene dianiinc-N, N-diacetic acid s. nooc uzc curcoon How-mo om-om-0n N-(Z-hydroxyetliyl)-N-phosphonomctliyl-othylenediamine, N, N -diacetic acid 11000-1120 CHz-(JOOH N-(2, 3-dihydroxypropyD-N"(2-sulphoethy1)-cthyleuediamine, N, N'-diacctic acid N, N-di(2-hydroxycthyl)cthylefictriamine, N, N, Nf-triacctic aei N-(3,fi-dichloroi-hydroxy-benzyl)-N'-(2-hydroxy-ethyl)ethylenediamine,
N,N-diaeetie acid 2-hydroxy-3,5-dichl0rohenzylamino-N-acetiu acid sodium salt.
In a process forpreparing silver transfer images according to the present invention wherein compounds corresponding to the above general formula are used, the said compounds are presentin the photosensitive element. These compounds may be located in the silver halide emulsion layer of said element .or in a layer in bromoiodide, silver chloroiodide, silver chlorobromide, silver chlorobromoiodide, etc. These silver halide emulsions can contain spectral sensitizers, speedincreasing addenda, hardeners, coating aids, antifoggants, plasticizers and the like conventional emulsion addenda.
The photosensitive silver .halide element may also comprise in the silver halide emulsion layer or in a layer in water-permeable relationship with the said emulsion .layer, compounds having a favorable effect on the maximum density of the image formed and/or in the speed of the photosensitive element. Examples of these compounds are the l-aryl-3-pyrazolidinone compounds ex-. amples of which can be found in the application for Silver Complex Diffusion Transfer Process filed on even date herewith United Kingdom Patent applica-' tionNo. 52,572/69), as well as diamine or polyamine' compounds and mor'pholine derivatives, typical examples of which are the compounds represented bythe following formulas:
OH I CH3 O HQC CH2 Ha (JIIz'IICl As previously noted, processing occurs with an alkaline processing liquid in the presence of a silver halide complexing agent and a hydroxylamine developing m0 CH; on on on .agent. These agents are preferably present in the processing liquid itself although it is also possible to incorporate them in the photosensitive or image-receiving element. For instance, the hydroxylamine derivatives can be incorporated in the said elements in the form of acid salts thereof e.g., in hydrochloride or hydrobromide form. When the developing and/or silver complexing agents are incorporated in the photosensitive and/or image-receiving element, the development of the exposed silver halide and the formation of the silver complex of unexposed silver halide is activated whenthe alkaline processing fluid is spread as a thin layer between the photosensitive element and the image-receiving element.
Silver halide complexing agents suitable for use in diffusion transfer processes are well known in the art and include alkali metal thiosulphates and thiocyanates, such as sodium thiosulphate and sodium thiocyanate. Silver halide complexing agents that are particularly suitable for use in accordance with the present invention are cyclic imides for example barbituric acid, uracil and urazole as well as derivatives thereof, examples of which can be found in US. Pat. No. 2,857,276 mentioned above. Among the hydroxylamine developing agents that are particularly suitable, mention may be made of the heterocyclic N-hydroxylamines such as N-hydroxymorpholine, N-hydroxy piperidine and N- hydroxy pyrrolidine, the primary and secondary N- lower alkyl hydroxylamines such as N,N-diethylhydroxylamine, the alkoxy-substituted derivatives thereof such as N,N-di(2-ethoxyethyl) hydroxylamine and N- ethyl-N-(2-ethoxyethyl)-hydroxylamine, the sulphonehydroxylamines such as N-m'ethyl-N-2-ethylsulphonylethyl hydroxylamine and bis-2-(methyl-hydroxylamino)-ethyl sulphone and the aminoalkyl hydroxylamines such as N-methyl-N-2-dirnethylaminoethylhydroxylamine. Further examples of such hydroxylamine derivatives can be found in'the US. patent specifications referred to above. I
The processing fluid comprises bases imparting to the fluid the required alkalinity. As examples of such bases mention may be made of alkali-metal hydroxides, e.g., sodium and potassium hydroxide, sodium carbonate, borax, sodium metaborate, trisodium phosphate, etc.
I The fluid may further contain, or dissolve in its travel to the photosensitive element, other compounds which plastic so that when the liquid isremoved from the processing layer by absorption and/or evaporation there remains a solid plastic film. The .film-forming plastic may be any-of the high molecular weight polymers which are stable to alkali and which are soluble in aqueous alkaline solutions e.g.,' hydroxyethylcellulose, starch or gum, polyvinylalcohol, the sodium salts of polymethacrylic acid and polyacrylic acid, sodi-. um alginate, sodium carboxymethyl cellulose. As is known in the art, stripping of the silver halide element from the image-receiving element may separate the solidified layer of processing composition from the image-receiving element or may permit the layer of processing composition to remain in contact withthe image-receiving element so that the solidified layer provides a protective coating over the image obtained.
The viscous processing fluid for use in in-camera processing is preferably confined within a hermetically sealed container or pod which is positioned between the p otosensitive element and the image-receiving element and which is ruptured and releases its contents receptive element'between a pair of pressure-rollers. Such a container is impervious to the processing'liquid and to the vapor of said liquidQand may be formed of a multilayer composite material comprising as inner layer in contact with the liquid, a material which is impervious to the liquid as intermediate layer a substance which is impervious to the vapor of said liquid and as outer layer a material merely serving as a backing or support. In its preferred form, the container is formed of a multilayer material whose inner layer is formed of a plastic such as polyvinyl acetal e.g., polyvinyl butyral, polymeric esters such as cellulose acetate, cellulose acetate butyrate, polyvinyl acetate, polyvinyl chloride, etc. said layer being backed by a metal foil e.g., a lead foil or lead-tin foil which is impervious to the vapors of upon advancing the photosensitive element and imagesaid solution. The containers may be strengthened by a more rapid backing material such as kraft paper or a plastic such as polyvinyl acetate and polyvinyl chloride; More details as to the construction of such a ru'pturable container can be found amongst others in US. Pat. No. 2,634,886 of Edwin H. Land, issued Apr. 14, 1953.
The silver halide emulsion layer and/or the imagereceiving layer may be coated on opaque'or transparent supports. ln this way it is possible to exposethe photosensitive element from either side as desired and it is possible to form either reflection prints or transparencies.
The image-receiving layer of the image-receiving element preferably comprisesmentioned, promoting precipitation of the silver from the transferred silver complex. Examples of such agents, called development nuclei or shortly nuclei, are'well known andinclude sulphides, selenides, polysulph'ides, polyselenides, thioureas, thioacetamides, mercaptans, stannous halides, heavy metals or their salts and fogged silver halide. Sulphides of heavy metals'such as of antimony,
ill
bismuth, cadmium, cobalt, lead, nickel and silver are also suited. Lead sulphide and zinc sulphide as well as the complex salts thereof are especially effective either in themselves or mixed with thioacetamide, dithiobiuret and dithio-oxamide. Among the heavy metals silver,
gold, platinum, palladium and mercury are to be mentioned preferably in colloidal form.
The development nuclei may be associatedwith a granular, inorganic, water-soluble, substantially chemically inert substance such as silica as vehicle for the said nuclei whereby aggregation of the precipitated silver is promoted.
In at least one layer of the image-receiving elementother substances may also be incorporated which play a part in the formation of the diffusion transferimage e.g., black-toning agents, anti-yellowing agents, optical bleaching agents, softening agents, etc.
For in-camera processing the image-receiving element may be constructed as described in US. Pat. No. 2,823,] l2'of Edwin H. Land, issued Feb. ll, 1958. According to this United States patent specification the print-receiving element is so constructed that the viscous'processing fluid separates therefrom and leaves no droplets or film of developing composition on the print-receiving layer. The image-receiving layer is thin, holding a mass of water so small that there is not tactual wetness.'Moreover, by making the print-receiving layer so thin the tendency to curl is also avoided. Consequently, when peeled from the photosensitive element, which carries the viscous processing layer, the image-receiving element appears to be a dry sheet.
According to this United States patent specification a layer, which is substantially impervious to the processing liquid and which may be the liquid-impervious surface of a supporting sheet which is entirely formed of liquid-impervious material is provided between the silver precipitating layer in which the positive is formed, and the remainder of the image-receiving element. Further, the image-receiving layer is provided with a surface from which the viscous film of processing fluid may be readily stripped. Thus, according to said United States patent specification theouter surface of the image-receiving element contacting the layer of processing composition is so constituted as to have a lesser adhesion for the solid residue of the liquid processing composition than does the photosensitive element. As a result, the photosensitive. element, when stripped from the image-receiving element, carries with it the residue of the processing composition. Further, between the image-receiving layer and the stripping layer an abrasion resistant coating may be provided.
According to this United States patent specification stripping of the silver halide element from the image- 'receiving element separates the layer of processing solution from the image-receiving element. However,
as noted hereinbefore in order to provide the image- EXAMPLE 1 A photosensitive element was prepared which com- 200 mg of prises a silver bromoiodide emulsion layer applied to a paper support and containing per kg an amount of silver halide corresponding to 60 g of silver nitrate and. a (poly)amino(poly)carboxylic acid compound as listed in the table below in the amount given. After exposure, the photosensitive element together with an image-receiving element comprising a silver receptive layer containing development nuclei dispersed in a matrix of colloidal silica coated on a water-impervious base according to the practice described in U.S. Pat. No. 2,823,122 of Edwin 1-1.Land,issued Feb. 11,1958, were advanced in superposed relationship between a pair of pressure applying rollers to spread between them in a thin layer a processing composition comprisingper liter:
sodium carboxymethyl cellulose 40 g sodium hydroxide 35 g uracil 75'g N,Nxli(2-.eth oxyethyl)- hydroxylamine 40 ml After. a' contact period of 36 seconds, the emulsion together with the layer of processing liquid was These results show that the compounds of use according to the present invention have a favorable effect I on the speed without causing a noteworthy decrease in maximum density of the image formed.
EXAMPLE 2 Example 1 was repeated with the difference that the photosensitive elements were processed directly after 7 preparation and afterhaving been stored for days at 45C and 15 percent of relative humidity.
The following results were attained.
Fresh material Stored material Compound added per kg of emulsion D D Gam- Speed D,,, Gam- Speed m ma none 1.57 0.03 1.73 100 1.59 0.03 1.63 87 50 mg of compound 10 1.53 0.03 1.33 139 1.58 0.03 1.47 112 100 mg of compound 10 1.56 0.03 1.50 136 1.51 0.03 1.11 127 200 mg of compound 10 1.54 0.02 1157 136 1.48 0.03 1.21 130 .50 mg of compound 12 1.55 0.03 2.03 136 1.56 0.03 1.40 115 100 mg of compound 12 1.54 0.03 1.46 '118 compound 12. 1.54 0.03 1.49 139 1.50 0.03 1.24 127 50 mg of compound 15 1.56 0.02 1.82 121 1.59 0.04 1.59 106 100mg of compound 15 1.55 0.03 1.70 136 1.58 0.04 1.55 109 200 mg of compound 15 1.55 0.03 1.51 136 1.55 0.03 1.40 121 EXAMPLE 3 Example 1 was repeated with the difference that the silver halide emulsion layer of the photosensitive ele ment now comprises compound 24 in an amount of 1 g per kgof emulsion. The sensitometric results obtained, as compared with the results obtained when no compound 24 is present are the following: 1
This example is analogous to example 3 with the only difference that the silver halide emulsion contains per kg in addition to 1 g ofc ompound 24, 0.5 g of 1'-phenyl- 3-pyranzolidinone.
- The following results were attained.
Material stored for 5 days Material Fresh material 1).}. Cam Speed D Gam- S eed I Comparison material Material comprising compound 24 and 0.5
g of l-phenyl- -Py razohdinone Material comprising 0.5 g of l-phenyl-3- pyrazolidinone and no compound 24 When comparing these results with the results obtained in example 3 it appears that l-phenyl-3- pyrazolidinone has a favorable effect on the maximum density of the image formed and that the gain in speed by the presence of compound 24 is maintained though.
1 -pheny1-3-pyrazolidone when usedalone has a marked desensitizing effect after storage.
EXAMPLE 5 This example is analogous to Example 1. The photosensltlve element accordingto the invention now comprises in the silver halide emulsion layer 500 mg of compound 1 per kg of emulsion.
The following results were attained.
Material Stored for 5 da s at 49C 15 Material Fresh material 0..., Gam- Speed is.;,e.....- Speed I mruma Comparison material L58 0.05 L49 I 1.62 0.04 1.95 73 Material comprisin 500 mgo compound l L55 0.03 1.43 I40 .l.55 0.03 L45 l4l approximately percent).
EXAMPLE 8 From Example 5 it appears that compound 1 has a favorable effect on the sensitivity without having a noteworthy influence on the maximum density of the image formed.
The results below show that when per kg of emulsion an amine is added in the amount given in. the table below, in addition to 500 mg of compound l,'the speed can still be increasedby approximately percent.
. Speed Compound added per kg of emulsion Dun: Dmin- Gamma percent -500 mgsol compound 1 1. 59 0. 04 I. 34 100 500 mg. of compound 1 plus 100 mg. of Hg1N-CHgCH1NHCH1CHgOH 1. 55 0. 04 l. 04 126 500 mg. at compound 1 plus 100 mg. of H N C H-CH-CH-NH1 1. 54 0.05 1.10 a 126- NH: v 1.55 0.0E 1.00 123 500 mg. of compound 1 plu 100 mg. of HiN (OH,); i H-C 0 0H-2H Cl 1. 55 0. 05 1.00 123 Material Fresh material G m- Speed ma (k) D 3 comparison matenal comprising 500 mg of compound 1 material comprising 500 mg of compound. 1 and 100 mg of the 3-pyrazolidinone compound I Y 40 L35 0.03 l.l7l29 1.42 0.03 l.l4 75 EXAMPLE 7 Example 6 'is repeated with the difference that now per kg of emulsion 2 g of l-phenyl-4,4-dimethyl-5- ethoxy-3-pyrazolidinone is used instead of 100 mg of lp-tolyl-4,4-dimethyl-5-ethoxy-3-pyrazolidinone.
The following results were attained with fresh material. v
Material D,,,, D Gamma Speed(%) Comparison material comprising 500 mg of compound 1 material comprising 500 mg of compound l and 2 g of the 3- pyrazolidinone compound These results also prove that the speed can still be further increased by 40 percent by adding to the emulsion in'addition to the (poly)amino(poly)carboxylic acid a compound as described and claimed in United Kingdom Patent application 52,572/69, the maximum density of the image formed also being increased (by We claim: a 1. in a process of forming'silver transfer images which comprises the steps of image-wise exposing a photosensitive element containing a silver halide emulsion layer, developing the exposed silverhalide and forming a soluble silvercomplex of unexposed silver halide by treating the said silver halide emulsion layer with an alkaline processing liquid in the presence of a hydroxylamine developing agent and a silver halide complexing agent, transferring said solublesilver complex-by diffusion to an image-receiving elementin Superposed relationship with said photosensitive element, forming at an image-receiving layer of said imagereceiving element an image incorporating silver from said silver complex, and separating said image-receiving element from said photosensitive element, the use of a photosensitive element which includes in the silver halide emulsion layer or a hydrophilic colloid layer in water-permeable relationship with the said emulsion layer a (poly)amino(poly)carboxylic acid compound inthe acidform or in the form of a water-soluble salt.
2. A process according to claim 1, wherein said (poly)amino(poly)carboxylic acid corresponds to the formula:
wherein: I
L stands for an alkylene group, a cycloalkylene group, or an alkylene group interrupted by one or more hetero atoms,
x represents 0, l or 2,
R stands for a lower alkylene group, and
each of R and R (the same or different) stands for 1 hydrogen, a lower alkyl group,,an aralkyl group or an aryl group.
3. A process according to claim 1, wherein the said silver halide complexing agent is a cyclicimide.
4. A process accordingto claim 3, wherein the said cyclic imideis uracil. 5. A process according to claim 1, wherein the (poly)amino(poly)carboxylic acid compound is v salt.
present in the silver halide emulsion layer of the photosensitive element in an amount of from about 30 mg to 15 gper mole of silver halide.
6. A process according toclaim 1, wherein said photosensitive element also includes an l-aryl-3- pyrazolidinon'e compound.
7. A process according to claim 1, wherein said photosensitive element also includes a diamine or polyamine compound.
8. The process according to claim 1 wherein said (poly)am ino(poly)carboxylic acid compound is ethylenediamine,N,N,N',N' tetraacetic acid disodium 9. The process according to claim 1 wherein said (poly)amino(poly)carboxylic acid compound is hydroxy-3,5 dichlorobenzylamino-Nacetic acid sodium salt. a i
Claims (11)
1. In a process of forming silver transfer images which comprises the steps of image-wise exposing a photosensitive element containing a silver halide emulsion layer, developing the exposed silver halide and forming a soluble silver complex of unexposed silver halide by treating the said silver halide emulsion layer with an alkaline processing liquid in the presence of a hydroxylamine developing agent and a silver halide complexing agent, transferring said soluble silver complex by diffusion to an image-receiving element in superposed relationship with said photosensitive element, forming at an image-receiving layer of said image-receiving element an image incorporating silver from said silver complex, and separating said image-receiving element from said photosensitive element, the use of a photosensitive element which includes in the silver halide emulsion layer or a hydrophilic colloid layer in water-permeable relationship with the said emulsion layer a (poly)amino(poly)carboxylic acid compound in the acid form or in the form of a water-soluble salt.
2. A process according to claim 1, wherein said (poly)amino(poly)carboxylic acid corresponds to the formula:
3. A process according to claim 1, wherein the said silver halide complexing agent is a cyclic imide.
4. A process according to claim 3, wherein the said cyclic imide is uracil.
5. A process according to claim 1, wherein the (poly)amino(poly)carboxylic acid compound is present in the silver halide emulsion layer of the photosensitive element in an amount of from about 30 mg to 15 g per mole of silver halide.
6. A process according to claim 1, wherein said photosensitive element also includes an 1-aryl-3-pyrazolidinone compound.
7. A process according to claim 1, wherein said photosensitive element also includes a diamine or polyamine compound.
8. The process according to claim 1 wherein said (poly)amino(poly)carboxylic acid compound is ethylenediamine,N,N, N'',N''-tetraacetic acid disodium salt.
9. The process according to claim 1 wherein said (poly)amino(poly)carboxylic acid compound is ethylenediamine,N, N''-di(o-hydroxyphenyl acetic acid).
10. The process according to claim 1 wherein said (poly)amino(poly)carboxylic acid compound is 2-hydroxyethyl-amino diacetic acid.
11. The process according to claim 1 wherein said (poly)amino(poly)carboxylic acid compound is ethyleneglycol bis(2-aminoethyl)-N,N,N'',N''-tetraacetic acid.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5257169 | 1969-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3716361A true US3716361A (en) | 1973-02-13 |
Family
ID=10464440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00080151A Expired - Lifetime US3716361A (en) | 1969-10-27 | 1970-10-12 | Process of forming silver transfer images |
Country Status (8)
Country | Link |
---|---|
US (1) | US3716361A (en) |
JP (1) | JPS492612B1 (en) |
BE (1) | BE757146A (en) |
CA (1) | CA950254A (en) |
DE (1) | DE2049701A1 (en) |
FR (1) | FR2066051A5 (en) |
GB (1) | GB1320504A (en) |
NL (1) | NL7014996A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4251617A (en) * | 1979-10-01 | 1981-02-17 | Polaroid Corporation | Novel silver complexing agents |
US4272632A (en) * | 1979-10-01 | 1981-06-09 | Polaroid Corporation | Novel silver complexing agents |
EP0093536A2 (en) * | 1982-04-29 | 1983-11-09 | EASTMAN KODAK COMPANY (a New Jersey corporation) | Stabilised photographic color developer compositions and processes |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3189454A (en) * | 1961-10-16 | 1965-06-15 | Eastman Kodak Co | Method of photographic development and fixing |
US3458316A (en) * | 1966-05-26 | 1969-07-29 | Gaf Corp | Light sensitive silver halide emulsions |
-
0
- BE BE757146D patent/BE757146A/en unknown
-
1969
- 1969-10-27 GB GB5257169A patent/GB1320504A/en not_active Expired
-
1970
- 1970-10-05 JP JP45087437A patent/JPS492612B1/ja active Pending
- 1970-10-09 DE DE19702049701 patent/DE2049701A1/en active Pending
- 1970-10-12 US US00080151A patent/US3716361A/en not_active Expired - Lifetime
- 1970-10-13 NL NL7014996A patent/NL7014996A/xx unknown
- 1970-10-13 CA CA095,410,A patent/CA950254A/en not_active Expired
- 1970-10-15 FR FR7037354A patent/FR2066051A5/fr not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3189454A (en) * | 1961-10-16 | 1965-06-15 | Eastman Kodak Co | Method of photographic development and fixing |
US3458316A (en) * | 1966-05-26 | 1969-07-29 | Gaf Corp | Light sensitive silver halide emulsions |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4251617A (en) * | 1979-10-01 | 1981-02-17 | Polaroid Corporation | Novel silver complexing agents |
US4272632A (en) * | 1979-10-01 | 1981-06-09 | Polaroid Corporation | Novel silver complexing agents |
EP0093536A2 (en) * | 1982-04-29 | 1983-11-09 | EASTMAN KODAK COMPANY (a New Jersey corporation) | Stabilised photographic color developer compositions and processes |
EP0093536A3 (en) * | 1982-04-29 | 1984-03-28 | Eastman Kodak Company | Stabilised photographic color developer compositions and processes |
US4482626A (en) * | 1982-04-29 | 1984-11-13 | Eastman Kodak Company | Photographic color developer compositions |
Also Published As
Publication number | Publication date |
---|---|
CA950254A (en) | 1974-07-02 |
JPS492612B1 (en) | 1974-01-22 |
NL7014996A (en) | 1971-03-25 |
FR2066051A5 (en) | 1971-08-06 |
DE2049701A1 (en) | 1971-04-29 |
GB1320504A (en) | 1973-06-13 |
BE757146A (en) | 1971-04-07 |
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