US3661591A - Diazotype materials - Google Patents
Diazotype materials Download PDFInfo
- Publication number
- US3661591A US3661591A US22391A US3661591DA US3661591A US 3661591 A US3661591 A US 3661591A US 22391 A US22391 A US 22391A US 3661591D A US3661591D A US 3661591DA US 3661591 A US3661591 A US 3661591A
- Authority
- US
- United States
- Prior art keywords
- benzene
- diazo
- fluoroborate
- diazotype
- light
- 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 claims abstract description 29
- 238000002835 absorbance Methods 0.000 claims abstract description 20
- 150000001989 diazonium salts Chemical group 0.000 claims abstract description 7
- -1 1-diazo-4-(N,N-diethylamino) benzene fluoroborate Chemical compound 0.000 claims description 12
- 230000005855 radiation Effects 0.000 abstract description 10
- 239000006097 ultraviolet radiation absorber Substances 0.000 abstract description 7
- 238000012216 screening Methods 0.000 abstract description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 10
- 239000004922 lacquer Substances 0.000 description 9
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000006096 absorbing agent Substances 0.000 description 5
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- FBLAHUMENIHUGG-UHFFFAOYSA-N 3-hydroxy-n-(2-methylphenyl)naphthalene-2-carboxamide Chemical compound CC1=CC=CC=C1NC(=O)C1=CC2=CC=CC=C2C=C1O FBLAHUMENIHUGG-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 229920006217 cellulose acetate butyrate Polymers 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920006267 polyester film Polymers 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229920008347 Cellulose acetate propionate Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000011928 denatured alcohol Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 239000011975 tartaric acid Substances 0.000 description 2
- 235000002906 tartaric acid Nutrition 0.000 description 2
- OFRMTRNULBCTHS-UHFFFAOYSA-N 2-[2-[2-[2-[bis(carboxymethyl)amino]-5-(2-diazoacetyl)phenoxy]ethoxy]-N-(carboxymethyl)-4-(2-diazoacetyl)anilino]acetic acid Chemical compound C(=O)(O)CN(C1=C(OCCOC2=C(C=CC(=C2)C(C=[N+]=[N-])=O)N(CC(=O)O)CC(=O)O)C=C(C=C1)C(C=[N+]=[N-])=O)CC(=O)O OFRMTRNULBCTHS-UHFFFAOYSA-N 0.000 description 1
- SWZVJOLLQTWFCW-UHFFFAOYSA-N 2-chlorobenzene-1,3-diol Chemical compound OC1=CC=CC(O)=C1Cl SWZVJOLLQTWFCW-UHFFFAOYSA-N 0.000 description 1
- OTEFEXJNJQIESQ-UHFFFAOYSA-N 3-hydroxy-n-(3-morpholin-4-ylpropyl)naphthalene-2-carboxamide Chemical compound OC1=CC2=CC=CC=C2C=C1C(=O)NCCCN1CCOCC1 OTEFEXJNJQIESQ-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
- PSGQCCSGKGJLRL-UHFFFAOYSA-N 4-methyl-2h-chromen-2-one Chemical compound C1=CC=CC2=C1OC(=O)C=C2C PSGQCCSGKGJLRL-UHFFFAOYSA-N 0.000 description 1
- FHQRDEDZJIFJAL-UHFFFAOYSA-N 4-phenylmorpholine Chemical compound C1COCCN1C1=CC=CC=C1 FHQRDEDZJIFJAL-UHFFFAOYSA-N 0.000 description 1
- CFNMUZCFSDMZPQ-GHXNOFRVSA-N 7-[(z)-3-methyl-4-(4-methyl-5-oxo-2h-furan-2-yl)but-2-enoxy]chromen-2-one Chemical compound C=1C=C2C=CC(=O)OC2=CC=1OC/C=C(/C)CC1OC(=O)C(C)=C1 CFNMUZCFSDMZPQ-GHXNOFRVSA-N 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- DYRDKSSFIWVSNM-UHFFFAOYSA-N acetoacetanilide Chemical compound CC(=O)CC(=O)NC1=CC=CC=C1 DYRDKSSFIWVSNM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- AFYCEAFSNDLKSX-UHFFFAOYSA-N coumarin 460 Chemical compound CC1=CC(=O)OC2=CC(N(CC)CC)=CC=C21 AFYCEAFSNDLKSX-UHFFFAOYSA-N 0.000 description 1
- 125000001664 diethylamino group Chemical group [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- TVZIWRMELPWPPR-UHFFFAOYSA-N n-(2-methylphenyl)-3-oxobutanamide Chemical compound CC(=O)CC(=O)NC1=CC=CC=C1C TVZIWRMELPWPPR-UHFFFAOYSA-N 0.000 description 1
- VOVZXURTCKPRDQ-CQSZACIVSA-N n-[4-[chloro(difluoro)methoxy]phenyl]-6-[(3r)-3-hydroxypyrrolidin-1-yl]-5-(1h-pyrazol-5-yl)pyridine-3-carboxamide Chemical compound C1[C@H](O)CCN1C1=NC=C(C(=O)NC=2C=CC(OC(F)(F)Cl)=CC=2)C=C1C1=CC=NN1 VOVZXURTCKPRDQ-CQSZACIVSA-N 0.000 description 1
- JRNGUTKWMSBIBF-UHFFFAOYSA-N naphthalene-2,3-diol Chemical compound C1=CC=C2C=C(O)C(O)=CC2=C1 JRNGUTKWMSBIBF-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 230000002087 whitening effect Effects 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
- G03C1/00—Photosensitive materials
- G03C1/52—Compositions containing diazo compounds as photosensitive substances
- G03C1/61—Compositions containing diazo compounds as photosensitive substances with non-macromolecular additives
-
- 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
- G03C1/00—Photosensitive materials
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/815—Photosensitive materials characterised by the base or auxiliary layers characterised by means for filtering or absorbing ultraviolet light, e.g. optical bleaching
- G03C1/8155—Organic compounds therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/167—X-ray
- Y10S430/168—X-ray exposure process
Definitions
- ABSTRACT A diazotype material for use in making copies of X-ray films which comprises a support carrying a light-sensitive layer containing at least one diazonium compound, a coupler and a non-light-sensitive ultra-violet absorber, the ultra-violet absorber being effective in screening out radiation in the range of 3,400 to 4,000 A, being transparent to all radiation at or above 4,300 A and being present in an amount such as to give a background absorbance of at least 0.9 at 4,000 A.
- the present invention is based upon the discovery that it is possible to produce copies of X-ray films acceptable to the medical profession by using a two-component diazotype material which comprises a support carrying a light-sensitive layer containing at least one diazonium compound, a coupler and a non-light sensitive ultra-violet absorber, the ultra-violet absorber being effective in screening out radiation in the range of 3,400 to 4,000 A, being transparent to all radiation at or above 4,300 A and being present in an amount such as to give a background absorbance of at least 0.9 at 4,000 A.
- a two component diazotype material for use in making from microfilms copies from which further copies can be made has been proposed in British Specification No. 1094374.
- This material contains an ultra-violet absorber which is effective in screening out radiation having a wave length in the range of 3,400 3,900 A, is transparent to radiation of wave length at and above 4,000 A, and is present in an amount giving a maximum background absorbance of 0.6 at 4,000 A.
- U.V. absorber which can be utilized in the diazotype material according to the invention is 7-diethylamino-4- methyl-coumarin which is on sale as an optical whitening agent under the Registered Trade Mark Coumalux.
- Diazotype material containing this U.V. absorber and with the lightsensitive layer supported on a transparent film backing has been found to have, in the bleached and developed condition, an absorbance of 1.52 at 3,400 A, a peak absorbance of 1.9 at 3,720 A, an absorbance of 1.18 at 4,000 A, an absorbance of 0.08 at 4,300 A and an absorbance of0.06 at 4,400 A.
- U.V. absorber Another example of U.V. absorber which can be used is the coumarin derivative sold by ClBA under the Trade Mark U- VlTEX SWR."
- Diazotype material containing this U.V. absorber in its light-sensitive layer has, in the bleached and developed condition, an absorbance considerably in excess of 2 in the range 3,400-4,000 A, an absorbance of 0.2 at 4,300 A and an absorbance of 0. 16 at 4,400 A.
- the light-sensitive layer of the diazotype material according to the invention may be transparent to radiation of wavelength 4,400 A or more. It will normally include in its light-sensitive layer two or more diazonium compounds having overlapping absorption curves. Preferably the background absorbance of the light-sensitive layer does not exceed 2.0.
- the support may normally be a transparent film of, for example, a polyester, such as Melinex (Registered Trade Mark) or cellulose acetate because the medical profession prefers to examine X-ray photographs as transparencies. Adequate copies of X-ray films can, however, be produced on diazotype material having a paper support.
- Suitable couplers are: 2,3-naphthalenediol; naphthalene 2,3-dihydroxy-6-sulphinic acid; resorcinol; 4,4'-diresorcinol, acetoacetanilide; acetoacet-o-toluidide; chlororesorcinol; N,N-bis-B-hydroxyethyl-2-hydroxy-3-naphthoamide; N-( 2 '-methylphenyl )-2- hydroxy-3-naphthoamide; N-y-morpholino-n-propyl-Z- hydroxy-3-naphthoamide and N,N-bis-B-hydroxyethyl-2- hydroxy-3-naphthoamide.
- the coating weight of the sensitizer was adjusted to give a maximum optical transmission density of 1.5.
- the background absorbance of the material was approximately 1.06.
- This diazotype material gives good reproduction of X-ray films of the silver type.
- Example 2 The procedure of Example l was repeated except that an equivalent amount of cellulose acetate propionate was utilised in the lacquer in place of the cellulose acetate butyrate.
- the background absorbance of the diazotype material was 1-diazo-4-(N,N-dimethylamino)-benzene i l 1 ()6 fluoroborate borate 0.6 appto y ldiazo-3-methyl-4-ethylamino-benzene fluoroborate EXAMPLE 3 l-diazo-2,5-diethoxy-4-morpholino-benzene
- the lacquer and the sensitizer set out in Example 1 were 5 lfgafig 3:3: mixed together in the ratio of l l by volume and coated on the polyester film. After drying at approximately 120 C.,'the coating had a thickness of approximately 0.0003 inch.
- the EXAMPLE9 background absorbance was greater than 0.9. l
- l diazo 4 N hydmxyethypwethylamino benzene lapping absorption curves a coupler and a nonlight sensitive fluoroborate 0.6 g ultra-vlolet absorber consisting essentially of 7-diethylaminoyy y y 4-methyl coumarin, said light-sensitive layer having a bFnzemi ""P 5 background absorbance of at least 0.9 at 4,000 A. l-diazo-2,5-drmethoxy-4-morpholino-benzene fluombome 03 g 2.
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1641869 | 1969-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3661591A true US3661591A (en) | 1972-05-09 |
Family
ID=10076970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US22391A Expired - Lifetime US3661591A (en) | 1969-03-28 | 1970-03-24 | Diazotype materials |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3661591A (enrdf_load_stackoverflow) |
| BE (1) | BE748025A (enrdf_load_stackoverflow) |
| CA (1) | CA926685A (enrdf_load_stackoverflow) |
| CH (1) | CH533318A (enrdf_load_stackoverflow) |
| DE (1) | DE2014775A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2040051A5 (enrdf_load_stackoverflow) |
| GB (1) | GB1250252A (enrdf_load_stackoverflow) |
| NL (1) | NL7004394A (enrdf_load_stackoverflow) |
| SE (1) | SE356138B (enrdf_load_stackoverflow) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3881928A (en) * | 1970-10-02 | 1975-05-06 | Philips Corp | Method of manufacturing a luminescent screen for a colour television tube |
| US4080208A (en) * | 1975-01-13 | 1978-03-21 | Addressograph Multigraph Corporation | Photosensitive diazomicrofilm adapted to be readable but nonreproducible upon processing |
| FR2394834A1 (fr) * | 1977-06-13 | 1979-01-12 | Trans World Techn Labor Inc | Systemes diazotypiques pour demi-teintes |
| US4147552A (en) * | 1976-05-21 | 1979-04-03 | Eastman Kodak Company | Light-sensitive compositions with 3-substituted coumarin compounds as spectral sensitizers |
| US4152156A (en) * | 1974-10-15 | 1979-05-01 | Xidex Corporation | Duplication-proof photographic film |
| US4224397A (en) * | 1979-01-26 | 1980-09-23 | Trans World Technology Laboratories Inc. (Twt Labs, Inc.) | Continuous tone diazo material |
| US4317875A (en) * | 1979-10-29 | 1982-03-02 | Hoechst Aktiengesellschaft | Recording material containing diazo compounds and process for the manufacture thereof |
| US4486518A (en) * | 1981-02-20 | 1984-12-04 | Polychrome Corporation | Duplicating film mask with radiation absorbing benzophenone in processed positive-working radiation sensitive layer on transparent substrate |
| US4540648A (en) * | 1983-03-02 | 1985-09-10 | Hoechst Aktiengesellschaft | Two-component diazotype material with ultraviolet light-absorbing dye salt of a benzothiazole |
| US4571373A (en) * | 1984-06-11 | 1986-02-18 | Minnesota Mining And Manufacturing Company | Exposure latitude improvement in printing positive-acting color pre-press proofs |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD154402A1 (de) * | 1980-12-15 | 1982-03-17 | Fred Walkow | Diazoniumsalze enthaltendes diazotypiematerial |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2378583A (en) * | 1939-12-27 | 1945-06-19 | Schmidt Maximilian Paul | Photographic printing material |
| US3525618A (en) * | 1964-12-04 | 1970-08-25 | Geigy Ag J R | Diazotype film materials |
-
1969
- 1969-03-28 GB GB1641869A patent/GB1250252A/en not_active Expired
-
1970
- 1970-03-23 CA CA078084A patent/CA926685A/en not_active Expired
- 1970-03-24 SE SE04045/70A patent/SE356138B/xx unknown
- 1970-03-24 US US22391A patent/US3661591A/en not_active Expired - Lifetime
- 1970-03-26 CH CH468170A patent/CH533318A/de not_active IP Right Cessation
- 1970-03-26 NL NL7004394A patent/NL7004394A/xx unknown
- 1970-03-26 BE BE748025D patent/BE748025A/xx unknown
- 1970-03-26 DE DE19702014775 patent/DE2014775A1/de active Pending
- 1970-03-26 FR FR7010983A patent/FR2040051A5/fr not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2378583A (en) * | 1939-12-27 | 1945-06-19 | Schmidt Maximilian Paul | Photographic printing material |
| US3525618A (en) * | 1964-12-04 | 1970-08-25 | Geigy Ag J R | Diazotype film materials |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3881928A (en) * | 1970-10-02 | 1975-05-06 | Philips Corp | Method of manufacturing a luminescent screen for a colour television tube |
| US4152156A (en) * | 1974-10-15 | 1979-05-01 | Xidex Corporation | Duplication-proof photographic film |
| US4080208A (en) * | 1975-01-13 | 1978-03-21 | Addressograph Multigraph Corporation | Photosensitive diazomicrofilm adapted to be readable but nonreproducible upon processing |
| US4147552A (en) * | 1976-05-21 | 1979-04-03 | Eastman Kodak Company | Light-sensitive compositions with 3-substituted coumarin compounds as spectral sensitizers |
| FR2394834A1 (fr) * | 1977-06-13 | 1979-01-12 | Trans World Techn Labor Inc | Systemes diazotypiques pour demi-teintes |
| US4148646A (en) * | 1977-06-13 | 1979-04-10 | Trans World Technology Laboratories, Inc. | Continuous tone diazotype process |
| US4224397A (en) * | 1979-01-26 | 1980-09-23 | Trans World Technology Laboratories Inc. (Twt Labs, Inc.) | Continuous tone diazo material |
| US4317875A (en) * | 1979-10-29 | 1982-03-02 | Hoechst Aktiengesellschaft | Recording material containing diazo compounds and process for the manufacture thereof |
| US4486518A (en) * | 1981-02-20 | 1984-12-04 | Polychrome Corporation | Duplicating film mask with radiation absorbing benzophenone in processed positive-working radiation sensitive layer on transparent substrate |
| US4540648A (en) * | 1983-03-02 | 1985-09-10 | Hoechst Aktiengesellschaft | Two-component diazotype material with ultraviolet light-absorbing dye salt of a benzothiazole |
| US4571373A (en) * | 1984-06-11 | 1986-02-18 | Minnesota Mining And Manufacturing Company | Exposure latitude improvement in printing positive-acting color pre-press proofs |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2040051A5 (enrdf_load_stackoverflow) | 1971-01-15 |
| SE356138B (enrdf_load_stackoverflow) | 1973-05-14 |
| GB1250252A (enrdf_load_stackoverflow) | 1971-10-20 |
| BE748025A (fr) | 1970-08-31 |
| NL7004394A (enrdf_load_stackoverflow) | 1970-09-30 |
| CA926685A (en) | 1973-05-22 |
| DE2014775A1 (de) | 1971-01-21 |
| CH533318A (de) | 1973-01-31 |
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