DE69231C - - Google Patents
Info
- Publication number
- DE69231C DE69231C DENDAT69231D DE69231DA DE69231C DE 69231 C DE69231 C DE 69231C DE NDAT69231 D DENDAT69231 D DE NDAT69231D DE 69231D A DE69231D A DE 69231DA DE 69231 C DE69231 C DE 69231C
- Authority
- DE
- Germany
- Prior art keywords
- layer
- gelatin
- nitrocellulose
- photosensitive
- nitric acid
- 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.)
- Active
Links
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 210000003491 Skin Anatomy 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- -1 nitric acid Alkali salts Chemical class 0.000 claims 1
- 108010010803 Gelatin Proteins 0.000 description 4
- 239000000020 Nitrocellulose Substances 0.000 description 4
- 229920000159 gelatin Polymers 0.000 description 4
- 239000008273 gelatin Substances 0.000 description 4
- 235000019322 gelatine Nutrition 0.000 description 4
- 235000011852 gelatine desserts Nutrition 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229920001220 nitrocellulos Polymers 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N Barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- UFMZWBIQTDUYBN-UHFFFAOYSA-N Cobalt(II) nitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 1
- GUWSLQUAAYEZAF-UHFFFAOYSA-L Lead(II) acetate Chemical compound O1C(C)=O[Pb]21O=C(C)O2 GUWSLQUAAYEZAF-UHFFFAOYSA-L 0.000 description 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L Manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- PRORZGWHZXZQMV-UHFFFAOYSA-O azanium;nitric acid Chemical compound [NH4+].O[N+]([O-])=O PRORZGWHZXZQMV-UHFFFAOYSA-O 0.000 description 1
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 229940046892 lead acetate Drugs 0.000 description 1
- 239000011702 manganese sulphate Substances 0.000 description 1
- 235000007079 manganese sulphate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004804 winding 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
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/85—Photosensitive materials characterised by the base or auxiliary layers characterised by antistatic additives or coatings
- G03C1/853—Inorganic compounds, e.g. metals
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photoreceptors In Electrophotography (AREA)
Description
KAISERLICHESIMPERIAL
WelösctuWelösctu
PATENTAMT.PATENT OFFICE.
Die jetzt allgemein -gebräuchlichen photographischen Blättchen, welche aus einer Unterlage von Nitrocellulose, Gelatine oder ähnlichen Substanzen in Verbindung mit einer lichtempfindlichen Deckschicht bestehen, zeigen häufig beim Hervorrufen Flecke in der lichtempfindlichen Schicht, welche von elektrischen Entladungen herrühren, die durch das Auf- und Abrollen des Bandes in der Rollcassette oder bereits während des Herstellungsprocesses hervorgerufen wurden.The now commonly used photographic ones Papers made from a base of nitrocellulose, gelatin or the like Substances in connection with a photosensitive top layer exist, show often in producing spots in the photosensitive layer, which are caused by electrical Discharges result from the winding and unwinding of the tape in the roll cassette or have already been caused during the manufacturing process.
Die vorliegende Erfindung bezweckt nun, diesem Uebelstande dadurch abzuhelfen, . dafs die Unterlage des ' lichtempfindlichen Blattes durch Zugabe eines passenden Materials unelektrisirbar gemacht wird, ohne dafs dabei der Beschaffenheit dieser Unterlage oder der Empfindlichkeitsgrad der darauf befindlichen Schicht eine wesentliche Aenderung erfahren.The present invention aims to remedy this disadvantage by. that the base of the photosensitive sheet can be made inelectrifiable by adding a suitable material is made without affecting the nature of this base or the degree of sensitivity the layer on top has undergone a substantial change.
Es hat sich gezeigt, dafs durch Zusatz einer geringen Quantität eines Salzes, z. B. salpetersauren Kalis oder Ammoniums, die Unterlage unelektrisirbar gemacht wird.It has been shown that by adding a small quantity of a salt, e.g. B. nitric acid Potash or ammonium, the substrate is made inelectrifiable.
Zu dem Zweck wird der Nitrocelluloseverbindung vorzugsweise eine geringe Menge (circa 10 g per Pfund) salpetersauren Ammoniums einverleibt.For the purpose, the nitrocellulose compound is preferably a small amount (about 10 g per pound) of nitric acid ammonium.
Es werden auch häufig »Films« verwendet, welche aus einer Zwischenlage aus Nitrocellulose und zwei auf dieselbe (beiderseits) aufgetragenen Gelatineschichten bestehen. Bei der Herstellung derartiger »Films« wird auf einer Glasplatte zuerst eine Schicht unlöslicher Gelatine aufgetragen, dann bringt man auf diese die Nitrocelluloseverbindung und schliefslich auf letztere die lichtempfindliche Emulsion. Ist das Ganze trocken, so wird es vom Glase abgezogen und der »Film« ist fertig."Films" are also often used, which consist of an intermediate layer of nitrocellulose and consist of two layers of gelatin applied to the same (on both sides). In the To produce such "films", first a layer of insoluble gelatin is placed on a glass plate applied, then the nitrocellulose compound is applied to it, and finally on the latter the photosensitive emulsion. When the whole thing is dry, it is peeled off the glass and the "film" is ready.
Nun sind aber auch bei diesen »Films« elektrische Entladungen, besonders beim Abziehen derselben vom Glase beobachtet worden. Um diesen vorzubeugen, mischt man der zuerst auf die Glasplatte aufzutragenden Gelatinelösung eine gewisse Menge Kalisalpeters (circa 50 g pro Pfund) bei.But there are also electrical discharges in these "films", especially when they are peeled off the same has been observed from the glass. To prevent this, the gelatin solution to be applied first to the glass plate is mixed add a certain amount of potash nitrate (about 50 g per pound).
An Stelle der Alkalinitrate können auch andere, den elektrischen Strom leitende Salze dem »Film« beigemischt werden. Insbesondere sind hierfür geeignet: Mangansulfat, Kobaltnitrat, Bleiacetat und Bariumnitrat.Instead of the alkali nitrates, other salts that conduct electricity can also be used be added to the "film". The following are particularly suitable for this: Manganese sulphate, cobalt nitrate, Lead acetate and barium nitrate.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE69231C true DE69231C (en) |
Family
ID=342715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT69231D Active DE69231C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE69231C (en) |
-
0
- DE DENDAT69231D patent/DE69231C/de active Active
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