US2369449A - Print-out emulsions - Google Patents
Print-out emulsions Download PDFInfo
- Publication number
- US2369449A US2369449A US514283A US51428343A US2369449A US 2369449 A US2369449 A US 2369449A US 514283 A US514283 A US 514283A US 51428343 A US51428343 A US 51428343A US 2369449 A US2369449 A US 2369449A
- Authority
- US
- United States
- Prior art keywords
- silver
- emulsion
- emulsions
- bromide
- 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
- 239000000839 emulsion Substances 0.000 title description 34
- 229910052709 silver Inorganic materials 0.000 description 13
- 239000004332 silver Substances 0.000 description 13
- 108010010803 Gelatin Proteins 0.000 description 7
- 229920000159 gelatin Polymers 0.000 description 7
- 239000008273 gelatin Substances 0.000 description 7
- 235000019322 gelatine Nutrition 0.000 description 7
- 235000011852 gelatine desserts Nutrition 0.000 description 7
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 7
- 150000004820 halides Chemical class 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- -1 silver halide Chemical class 0.000 description 6
- 229940103494 thiosalicylic acid Drugs 0.000 description 6
- NBOMNTLFRHMDEZ-UHFFFAOYSA-N thiosalicylic acid Chemical compound OC(=O)C1=CC=CC=C1S NBOMNTLFRHMDEZ-UHFFFAOYSA-N 0.000 description 5
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 229910021607 Silver chloride Inorganic materials 0.000 description 2
- 239000000908 ammonium hydroxide Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 2
- 229910001961 silver nitrate Inorganic materials 0.000 description 2
- 241000212342 Sium Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- ZUVOYUDQAUHLLG-OLXYHTOASA-L disilver;(2r,3r)-2,3-dihydroxybutanedioate Chemical compound [Ag+].[Ag+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O ZUVOYUDQAUHLLG-OLXYHTOASA-L 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- IOVGROKTTNBUGK-SJCJKPOMSA-N ritodrine Chemical compound N([C@@H](C)[C@H](O)C=1C=CC(O)=CC=1)CCC1=CC=C(O)C=C1 IOVGROKTTNBUGK-SJCJKPOMSA-N 0.000 description 1
- 229940071575 silver citrate Drugs 0.000 description 1
- 229940100890 silver compound Drugs 0.000 description 1
- 150000003379 silver compounds Chemical class 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate 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
- QUTYHQJYVDNJJA-UHFFFAOYSA-K trisilver;2-hydroxypropane-1,2,3-tricarboxylate Chemical compound [Ag+].[Ag+].[Ag+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QUTYHQJYVDNJJA-UHFFFAOYSA-K 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-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
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/49—Print-out and photodevelopable emulsions
Definitions
- ' inventionf relates to photo graphic material and more particularly to a photographic emulsion ofthetype known as-print-out emulsions.
- Print-out emulsions are characterized by the fact that a visible image is producedin them dia rectly by the action elflight whereas developing -emulsions or developing out emulsions must be subjected to the action ofa developer in order to produce a visible image.
- the present invention relates to print-out emulsions and especially to those in which the light-sensitive element is a silver. halide.
- Print-out emulsions are'usually prepared by the precipitation in a colloidal medium of a he.-
- the silver chloride is usually precipitated inthe colloidal medium in such a way that the final product contains an 39 excess of soluble silver compound, for. instance, silver nitrate; the silver salt of; an organic acid. such as silver citrate or silver tartrate, together with some of the free organic acid.
- soluble silver compound for. instance, silver nitrate; the silver salt of; an organic acid. such as silver citrate or silver tartrate, together with some of the free organic acid.
- The-sensitivity to light of print-out emulsions maybe'increased by the addition at halogen absorbers such as soluble nitrites, alkaline m'ate-'
- halogen absorbers such as soluble nitrites, alkaline m'ate-'
- a typical print-out emulsionjaccording to my my invention by preparing rials such'as borax, sodium hydroxide, ammonium hydroxide and organic alkalies such as pyridine cramines. o t It is an object of the present invention to pro vide. a diflerent type of print-out emulsion.
- further object is to provide a means for prepar D 'ing a very fast print-out emulsion.
- 1 lg ese objects are accomplished; according to a gelatino-silver halide emulsion containing an excess of 'soluble halide and adding to. the emulsion thus prepared sio'n.
- Th'emulsion thus prepared was coated on a suitable support and dried.- It was then eiposed for 5 minutes on a print-out sensitometer through a power of 2 step tablet by 'a 500 watt lamp 24 step tablet used for this exposure produced 12 steps on the material whereas a similar. exposure got a commercial print-out material produced only '7 steps. This means that the print-out material produced according to my invention was 32 times 1 I 25 as fastas the commercial print-out material with which it was compared.
- the preferred amount'oi' thiosalicyl'c acid is, therefore, "about 2% of the amount of -silver.halide in the emulsion.
- more-or less than this amount can be employed and-the thiosalicyli'c acid con vcentration may vary from about20 mg. to 4000 mg. per grams of silver halide. r
- a lightsensitive print-out emulsion comprising a gelatino-silver halide emulsion containing an excess of soluble bromide andtfrom 20 to 4000 milligrams per 50 grams of silver halide oi thiosalicylic acid.
- a light-sensitive print-out emulsion comprising a gelatino-silver bromide emulsion contaihing an excess of soluble bromide and an amount of thiosalicylic acid which is approxim mately 2% by weight of the silver bromide.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR956710D FR956710A (enrdf_load_html_response) | 1943-12-14 | ||
| US514283A US2369449A (en) | 1943-12-14 | 1943-12-14 | Print-out emulsions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US514283A US2369449A (en) | 1943-12-14 | 1943-12-14 | Print-out emulsions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2369449A true US2369449A (en) | 1945-02-13 |
Family
ID=24046539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US514283A Expired - Lifetime US2369449A (en) | 1943-12-14 | 1943-12-14 | Print-out emulsions |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2369449A (enrdf_load_html_response) |
| FR (1) | FR956710A (enrdf_load_html_response) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2972533A (en) * | 1955-12-07 | 1961-02-21 | Gen Electric | Photo-mechanical method of producing technical drawings and the like |
| US3035912A (en) * | 1956-12-28 | 1962-05-22 | Honeywell Regulator Co | Process of recording |
| US4207103A (en) * | 1978-06-26 | 1980-06-10 | Eastman Kodak Company | Photographic print-out silver halide process |
| US4383029A (en) * | 1979-08-16 | 1983-05-10 | Matsushita Electric Industrial Co., Ltd. | Recording medium and recording system |
-
0
- FR FR956710D patent/FR956710A/fr not_active Expired
-
1943
- 1943-12-14 US US514283A patent/US2369449A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2972533A (en) * | 1955-12-07 | 1961-02-21 | Gen Electric | Photo-mechanical method of producing technical drawings and the like |
| US3035912A (en) * | 1956-12-28 | 1962-05-22 | Honeywell Regulator Co | Process of recording |
| US4207103A (en) * | 1978-06-26 | 1980-06-10 | Eastman Kodak Company | Photographic print-out silver halide process |
| US4383029A (en) * | 1979-08-16 | 1983-05-10 | Matsushita Electric Industrial Co., Ltd. | Recording medium and recording system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR956710A (enrdf_load_html_response) | 1950-02-06 |
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