DE720712C - Method for producing a photosensitive layer - Google Patents
Method for producing a photosensitive layerInfo
- Publication number
- DE720712C DE720712C DEH162842D DEH0162842D DE720712C DE 720712 C DE720712 C DE 720712C DE H162842 D DEH162842 D DE H162842D DE H0162842 D DEH0162842 D DE H0162842D DE 720712 C DE720712 C DE 720712C
- Authority
- DE
- Germany
- Prior art keywords
- photosensitive layer
- producing
- layers
- halogen silver
- ripening
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 claims description 7
- 229910052736 halogen Inorganic materials 0.000 claims description 6
- 150000002367 halogens Chemical class 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000000084 colloidal system Substances 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000005213 imbibition Methods 0.000 claims description 2
- 230000003993 interaction Effects 0.000 claims description 2
- 239000004848 polyfunctional curative Substances 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 230000005070 ripening Effects 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 108010010803 Gelatin Proteins 0.000 description 3
- 206010034972 Photosensitivity reaction Diseases 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 229920000159 gelatin Polymers 0.000 description 3
- 239000008273 gelatin Substances 0.000 description 3
- 235000019322 gelatine Nutrition 0.000 description 3
- 235000011852 gelatine desserts Nutrition 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000036211 photosensitivity Effects 0.000 description 3
- 229940037003 alum Drugs 0.000 description 2
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 239000001648 tannin Substances 0.000 description 2
- 235000018553 tannin Nutrition 0.000 description 2
- 229920001864 tannin Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229940074391 gallic acid Drugs 0.000 description 1
- 235000004515 gallic acid Nutrition 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000005406 washing Methods 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
- G03C1/494—Silver salt compositions other than silver halide emulsions; Photothermographic systems ; Thermographic systems using noble metal compounds
- G03C1/496—Binder-free compositions, e.g. evaporated
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Description
Verfahren zur Herstellung einer lichtempfindlichen Schicht Die Herstellung lichtempfindlicher Halogensilberschichten in Gelatine oder einem anderen Bindemittel erfolgt @ im allgemeinen so, daß das Halogensilber in Gegenwart des Bindemittels gefällt wird. Nach dem Fällen werden die durch doppelte Umsetzung erhaltenen wasserlöslichen Salze ausgewaschen und hierauf die Emulsiän einem Reifungsprozeß unterworfen. Durch diesen Reifungsprozeß wird nach den bisherigen theoretischen Vorstellungen das Halogensilberkorn aktiviert. Vor dem Reifen ist die Empfindlichkeit der Halogensilb:eremulsion außerordentlich gering und steigt erst durch den Reifungsprozeß bei höherer Temperatur nach längerer Zeit auf die Empfindlichkeit der praktisch brauchbaren lichtempfindlichen Schichten. Nach dem Vergießen der Emulsion auf einen der üblichen Schichtträger bzw. während des Gießproze.ssies wird der Emulsionsträ,ger durch chemische Zusätze, wie Formaldehyd, Alaun usw.,- gehärtet. Es wurde gefunden, daß man eine lichtempfindliche Schicht von besonderen Eigenschaften erhalten kann, wenn eine auf einem beliebigen Träger, wie Cellulosefolie, Papier ,o. dgl., aufgebrachte beliebige, für photographische Zwecke geeignete Kolloidschicht mit einem Härtungsmittel behandelt und nach dem Trocknen in an sich bekannter Weise nach dem Imbibitionsverfahren Halogensilber durch Wechselwirkung .erzeugt wird.Method for producing a photosensitive layer Production photosensitive halogen silver layers in gelatin or another binder takes place @ in general so that the halogen silver in the presence of the binder is felled. After the precipitation, the water-soluble ones obtained by the double reaction become Washed out salts and then subjected the emulsiän to a ripening process. By According to previous theoretical ideas, this ripening process becomes the halosilver grain activated. Before ripening, the halosilver emulsion is extremely sensitive low and only increases after a longer period of time due to the ripening process at a higher temperature Time on the sensitivity of the practically useful photosensitive layers. After the emulsion has been poured onto one of the usual substrates or during of the casting process, the emulsion carrier is made by chemical additives such as formaldehyde, Alum, etc., - hardened. It has been found that there is a photosensitive layer of special properties, if one on any carrier, such as cellulose film, paper, etc. Like., applied any, for photographic Purposes suitable colloid layer treated with a hardening agent and after Drying in a manner known per se using the halogen silver imbibition process is generated by interaction.
Als Härtungsmittel können Alaune, Tannin, Gallussäure, Ferrioxalat, Acetaldehyd, Formaldehyd o. dgl. verwendet werden.Alum, tannin, gallic acid, ferrioxalate, Acetaldehyde, formaldehyde or the like can be used.
Beispiel i Eine mit Gelatine begossene Glasplatte wird io Minuten in einer zo%igen Lösung von Formaldehyd gebadet. Man läßt gut trocknen. Die Platte wird nunmehr in eine Lösung folgender Zusammensetzung gebracht: 5 g Kaliumbromid, ioo ccm Wasser und io Minuten gebadet. Der Film wird wieder getrocknet. Dann wird er "in@ folgender Lösung behandelt: 6g Silbernitrat, iooccm Wasser. Dadurch wird das Halogensilber im Bindemittel gebildet. Die noch in der Schicht befindlichen bzw. dort entstandenen wasserlöslichen Salze werden durch kurzes Waschen entfernt und anschließend die lichtempfindliche Schicht getrocknet. Die getrocknete Glasplatte kann sofort verwendet werden und hat ohne weitere Behandlung die Lichtempfindlichkeit von etwa i o' Scheiner. Die Entwicklung derartiger Schichten erfolgt in den üblichen Entwicklern, ebenso die Fixierung. Beispiel z Eine mit Gelatine begossene Glasplatte wird i o Minuten in .einer 5 %igen Lösung von Kalium-Aluminium-Sulfat gebadet. Die weitere Behandlung erfolgt wie im Beispiel i beschrieben. Beispiel 3 Eine mit Gelatine begossene Glasplatte wird io Minuten in einer io%igen Lösung von Tannin gebadet und dann, wie in Beispiel i und 2 beschrieben, weiterbehandelt. Die erhaltene Bildschicht ist glasklar und unterscheidet sich dadurch grundsätzlich von allen bekannten Halogensilberschichten in Kolloiden. Das entwickelte Bild ist feiner im Korn als alle bisher bekannten, aus Halo-Bilder.EXAMPLE 1 A glass plate coated with gelatin is bathed for 10 minutes in a 10% strength solution of formaldehyde. Allow to dry well. The plate is then placed in a solution of the following composition: 5 g of potassium bromide, 100 cc of water and bathed for 10 minutes. The film is dried again. Then it is treated in the following solution: 6 g of silver nitrate, 10 ounces of water. This forms the halogen silver in the binder. The water-soluble salts that are still in the layer or that have formed there are removed by brief washing and then the photosensitive layer is dried. The dried Glass plate can be used immediately and, without further treatment, has a photosensitivity of about 10% Scheiner. The development of such layers is carried out in the usual developers, as is the fixation The further treatment takes place as described in Example I. Example 3 A glass plate coated with gelatin is bathed for 10 minutes in a 10% strength solution of tannin and then treated further as described in Examples 1 and 2 The image layer obtained is crystal clear and therefore fundamentally differs from all of them known halogen silver layers in colloids. The developed image is finer in grain than any previously known from Halo images.
Die lichtempfindliche Schicht zeigt den Vorteil, daß sie ohne Reifungsprozeß bereits einen hohen Grad von Lichtempfindlichkeit aufweist. Eine Reifung, wie es bei den bisherigen Schichten üblich war, erübrigt sich also, bzw. wenn die Schicht einer Reifung unterworfen wird, so wird eine Lichtempfindlichkeit erhalten, die die der bekannten Schichten übertrifft.The photosensitive layer has the advantage that it does not have a ripening process already has a high degree of photosensitivity. A maturation like it was common in the previous shifts, is therefore superfluous, or if the shift is subjected to ripening, a photosensitivity is obtained which that of the known layers.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH162842D DE720712C (en) | 1940-07-24 | 1940-07-24 | Method for producing a photosensitive layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH162842D DE720712C (en) | 1940-07-24 | 1940-07-24 | Method for producing a photosensitive layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE720712C true DE720712C (en) | 1942-05-13 |
Family
ID=7183741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEH162842D Expired DE720712C (en) | 1940-07-24 | 1940-07-24 | Method for producing a photosensitive layer |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE720712C (en) |
-
1940
- 1940-07-24 DE DEH162842D patent/DE720712C/en not_active Expired
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