FR2341151A1 - Photoconductive layer deposited on TV tube - is uniformly charged so that subsequently applied charged particles are repelled to fill up pin holes, dust particles etc. (BE 16.8.77) - Google Patents
Photoconductive layer deposited on TV tube - is uniformly charged so that subsequently applied charged particles are repelled to fill up pin holes, dust particles etc. (BE 16.8.77)Info
- Publication number
- FR2341151A1 FR2341151A1 FR7704423A FR7704423A FR2341151A1 FR 2341151 A1 FR2341151 A1 FR 2341151A1 FR 7704423 A FR7704423 A FR 7704423A FR 7704423 A FR7704423 A FR 7704423A FR 2341151 A1 FR2341151 A1 FR 2341151A1
- Authority
- FR
- France
- Prior art keywords
- charged
- repelled
- fill
- tube
- blemishes
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/05—Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
- G03G5/0525—Coating methods
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
- H01J9/233—Manufacture of photoelectric screens or charge-storage screens
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
A slightly conductive coating (2) is applied to the surface (1) of a c.r.t. and covered with a layer of the photoconductive material (3). This is uniformly charged. At any conductive blemishes e.g a dust particle (4), or a pinhole in the layer (3) the charge leaks away through the first coating (2). A developer containing the same photoconductive material similarly charged is then applied. The charged particles are repelled from the charged areas and driven towards the blemishes, where they adhere. The method may be extended to deal also with non-conductive blemishes, though these are rarer. The surface is charged and exposed to light. The charge remains only on the non-conductive blemishes, which then accept a developer containing the photoconductive material, as before.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7601537A NL7601537A (en) | 1976-02-16 | 1976-02-16 | METHOD OF MANUFACTURING A SUBSTRATE WITH A PHOTO-CONDUCTIVE LAYER AND SUBSTRATE RESP. COLOR TV PICTURE TUBE MADE IN ACCORDANCE WITH THIS METHOD. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2341151A1 true FR2341151A1 (en) | 1977-09-09 |
Family
ID=19825628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7704423A Withdrawn FR2341151A1 (en) | 1976-02-16 | 1977-02-16 | Photoconductive layer deposited on TV tube - is uniformly charged so that subsequently applied charged particles are repelled to fill up pin holes, dust particles etc. (BE 16.8.77) |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5299766A (en) |
| BE (1) | BE851409A (en) |
| DE (1) | DE2704416A1 (en) |
| ES (1) | ES455892A1 (en) |
| FR (1) | FR2341151A1 (en) |
| IT (1) | IT1075568B (en) |
| NL (1) | NL7601537A (en) |
-
1976
- 1976-02-16 NL NL7601537A patent/NL7601537A/en not_active Application Discontinuation
-
1977
- 1977-02-03 DE DE19772704416 patent/DE2704416A1/en active Pending
- 1977-02-11 IT IT2024077A patent/IT1075568B/en active
- 1977-02-12 JP JP1454577A patent/JPS5299766A/en active Pending
- 1977-02-14 ES ES455892A patent/ES455892A1/en not_active Expired
- 1977-02-14 BE BE174921A patent/BE851409A/en unknown
- 1977-02-16 FR FR7704423A patent/FR2341151A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| ES455892A1 (en) | 1978-01-16 |
| BE851409A (en) | 1977-08-16 |
| IT1075568B (en) | 1985-04-22 |
| DE2704416A1 (en) | 1977-08-18 |
| NL7601537A (en) | 1977-08-18 |
| JPS5299766A (en) | 1977-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |