DE681395C - Process for the production of mosaic cathodes for image storage tubes - Google Patents
Process for the production of mosaic cathodes for image storage tubesInfo
- Publication number
- DE681395C DE681395C DEF83727D DEF0083727D DE681395C DE 681395 C DE681395 C DE 681395C DE F83727 D DEF83727 D DE F83727D DE F0083727 D DEF0083727 D DE F0083727D DE 681395 C DE681395 C DE 681395C
- Authority
- DE
- Germany
- Prior art keywords
- mosaic
- cathodes
- image storage
- particles
- storage tubes
- 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
- 238000000034 method Methods 0.000 title claims description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 12
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- 229910001923 silver oxide Inorganic materials 0.000 claims description 8
- 239000010445 mica Substances 0.000 claims description 5
- 229910052618 mica group Inorganic materials 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000010946 fine silver Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- UKHWJBVVWVYFEY-UHFFFAOYSA-M silver;hydroxide Chemical compound [OH-].[Ag+] UKHWJBVVWVYFEY-UHFFFAOYSA-M 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/36—Photoelectric screens; Charge-storage screens
- H01J29/39—Charge-storage screens
- H01J29/43—Charge-storage screens using photo-emissive mosaic, e.g. for orthicon, for iconoscope
Description
Verfahren zur Herstellung von Mosaikkathoden für Bildspeicherröhren Es ist bekannt, ein Photomosaik für BildabtastrÖhren dadurch herzustellen, daß eine isolierende, vorzugsweise -aus Glimmer bestehende Platte mit einer gleichmäßigen Silberschicht überzogen und dann an Luft hoch erhitzt wird. Dabei bilden sich winzige Kügelchen, die in üblicher Weise photoelektrisch empfindlich gemacht werden. Die Silberschicht wird im allgemeinen durch Aufdampfen erzeugt, so daß die Platte zweimal ins Vakuum eingebracht werden muß.Process for the production of mosaic cathodes for image storage tubes It is known to produce a photomosaic for image scanning tubes by having a insulating, preferably made of mica plate with a uniform Silver layer is coated and then heated to high temperatures in air. Tiny ones are formed in the process Spheres which are made photoelectrically sensitive in the usual way. the Silver layer is generally produced by vapor deposition, so that the plate twice must be introduced into the vacuum.
Die Erfindung betrifft ein anderes Verfahren zur Herstellung einer Mosaikkathode, bei dem dieser Nachteil vermieden wird. Gemäß der Erfindung wird das Mosaik durch Sedimentation sehr kleiner, vorzugsweise aus Silberoxyd bestehender Teilchen hergestellt. Dieser Vorgang kann vollständig außerhalb des Vakuums vorgenommen werden. Außerdem besteht der Vorteil, daß sich die Größe der Teilchen auf einfachste Weise regeln läßt.The invention relates to another method of making a Mosaic cathode in which this disadvantage is avoided. According to the invention the mosaic is very small due to sedimentation, preferably consisting of silver oxide Particles made. This process can be done entirely outside of the vacuum will. There is also the advantage that the size of the particles is extremely simple Way to regulate.
Das Verfahren gemäß der Erfindung wird beispielsweise folgendermaßen durchgeführt; vgl. die Abbildung. Silberoxyd wird in der Kugelmühle fein gemahlen -und sodann in einer geeigneten Flüssigkeit, z. B. Essigester; aufgeschwemmt. Von dieser Aufschwemmung werden einige Tropfen in einen trichterförmigen, unten mit einem Ablauf z versehenen Behälter i gegeben, in dem sich bereits eine größere Menge Essigester 3 befindet. Die Silberoxydteilchen sinken dann langsam abwärts, und zwar gelangen zuerst die gröbsten Teilchen q. auf den Boden. Es wird nun zweckmäßig eine Zeitlang gewartet, bis sich diese größten Teilchen abgesetzt haben. Sodann wird die gründlich gereinigte und auf der einen Seite mit einer später als Signalplatte dienenden Metallschicht 6 versehene Glimmerplatte 5 in die Aufschwemmung eingeführt, sä daß sie vollständig in ihr untertaucht. Nunmehr setzen sich feine Silbcroxydteilchen auf der Platte ab. Der Vorgang läßt sich bequem. verfolgen. Nachdem sich die Teilchen abgesetzt haben, läßt man die Flüssigkeit langsam ablaufen und wartet, bis der auf der Platte verbleibende Rest verdunstet ist. Die Glimmerplatte zeigt nun zahllose kleine, in geringem Abstand voneinander sitzende Silberoxydkügelchen, die fest haften.The method according to the invention is for example as follows carried out; see the illustration. Silver oxide is finely ground in a ball mill -and then in a suitable liquid, e.g. B. ethyl acetate; bloated. from this suspension will contain a few drops in a funnel-shaped, bottom with a drain z provided container i is given, in which there is already a larger amount Ethyl acetate 3 is located. The silver oxide particles then slowly sink downwards, namely the coarsest particles q arrive first. on the ground. It will now be a convenient one Waited a while for these largest particles to settle. Then will the thoroughly cleaned and on one side with a later as a signal plate serving metal layer 6 provided mica plate 5 inserted into the suspension, see that she is completely submerged in her. Fine silver hydroxide particles now settle on the plate. The process can be convenient. follow. After the particles have stopped, let the liquid drain slowly and wait for the the remainder of the plate has evaporated. The mica plate now shows countless small silver oxide spheres that sit at a short distance from one another and that adhere firmly.
Nach vollständigem. Trocknen kann die Platte in die Röhre eingebaut werden. Durch Ausheizen läßt sich das Silberoxyd in metallisches Silber überführen; welches ebenfalls in Form kleiner Kügelchen auf der Plätte haftet, die in der üblichen Weise mit einem photoelektrischen Stoff versehen werden. Zweckmäßig werden Größe und Dichte der Silberoxydteilchen so gewählt, daß sich die einzelnen Mosaikelemente nicht berühren. Die Dichte der Teilchen läßt sich durch Wahl verschieden hoher Flüssigkeitsschichten bequem regeln.After complete. The plate built into the tube can dry will. The silver oxide can be converted into metallic silver by heating; which also adheres to the plate in the form of small balls, which in the usual Way to be provided with a photoelectric substance. Size becomes appropriate and density of the silver oxide particles selected so that the individual mosaic elements do not touch. The density of the particles can be determined by choosing liquid layers of different heights conveniently regulate.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF83727D DE681395C (en) | 1937-09-26 | 1937-09-26 | Process for the production of mosaic cathodes for image storage tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF83727D DE681395C (en) | 1937-09-26 | 1937-09-26 | Process for the production of mosaic cathodes for image storage tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
DE681395C true DE681395C (en) | 1939-09-22 |
Family
ID=7114147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF83727D Expired DE681395C (en) | 1937-09-26 | 1937-09-26 | Process for the production of mosaic cathodes for image storage tubes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE681395C (en) |
-
1937
- 1937-09-26 DE DEF83727D patent/DE681395C/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2641884B2 (en) | Getter device | |
DE681395C (en) | Process for the production of mosaic cathodes for image storage tubes | |
DE1590867A1 (en) | Process for the production of resistance elements | |
DE2450834C3 (en) | Method for aluminizing the inside of the screen pan of a television picture tube | |
DE2846577C2 (en) | Process for the production of resistor material and resistor bodies produced by this process | |
DE1014154B (en) | Method for applying a conductive network to a carrier made of insulating material for the production of a picture electrode | |
DE828672C (en) | Process for the production of silver plating preparations | |
DE643872C (en) | Process for the production of fluorescent screens on the inner wall of closed vessels | |
DE878221C (en) | Process for the production of mosaic electrodes | |
DE1035805B (en) | Process for the production of a photocell equipped with a photoconductive layer | |
DE687215C (en) | Process for the production of grid-shaped subdivided photocathodes | |
DE880678C (en) | Electroplating process for the production of a metal mesh | |
DE2015995A1 (en) | Method of manufacturing a photoelectric cathode | |
DE744768C (en) | Process for the vapor deposition of metals on several photo and / or secondary emission electrodes to be treated differently located in the same vessel and arrangement for its implementation | |
DE666189C (en) | Discharge tubes for corpuscular beams for television purposes | |
DE687863C (en) | Process for the production of mosaic cathodes for image storage tubes | |
DE512818C (en) | Method for manufacturing a rectifier element | |
AT137260B (en) | Mosaic electrode. | |
DE763223C (en) | Process for the production of even base layers for cathodes of photocells | |
DE695029C (en) | Arrangement for converting radiation energy into electrical energy | |
DE442833C (en) | Process for the production of a homogeneous mixture for the coating of metallic conductors from the group of platinum metals for the purpose of better electron emission | |
DE848623C (en) | Method for producing a solder connection between a metal and a ceramic body | |
DE627255C (en) | Luminous body for electrical heating | |
DE861729C (en) | Method of manufacturing a photoelectric cell | |
DE696005C (en) | Method and device for the production of hollow glass bodies with wire inlays or ducts |