GB1152336A - Electrostatic Writing Tube and method of manufacture - Google Patents

Electrostatic Writing Tube and method of manufacture

Info

Publication number
GB1152336A
GB1152336A GB38021/66A GB3802166A GB1152336A GB 1152336 A GB1152336 A GB 1152336A GB 38021/66 A GB38021/66 A GB 38021/66A GB 3802166 A GB3802166 A GB 3802166A GB 1152336 A GB1152336 A GB 1152336A
Authority
GB
United Kingdom
Prior art keywords
matrix
tube
coating
anode
prior
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
Application number
GB38021/66A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB1152336A publication Critical patent/GB1152336A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
    • H01J31/06—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with more than two output electrodes, e.g. for multiple switching or counting
    • H01J31/065—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with more than two output electrodes, e.g. for multiple switching or counting for electrography or electrophotography, for transferring a charge pattern through the faceplate

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

1,152,336. Electron beam apparatus. SYLVANIA ELECTRIC PRODUCTS Inc. 24 Aug., 1966 [30 Aug., 1965], No. 38021/66. Heading H1D. One method of manufacturing an electrostatic writing tube 10 includes the step of selectively coating interior surfaces of the tube envelope with an anhydrous electrically conductive material to form an anode coating 22, and the method, which does not involve a preliminary air brake in the presence of the matrix to drive off occluded water vapour, produces a tube that has virtually no internal matrix arcing. The coating 22, which may be of stannous chloride to give a transparent coating or of aluminium, extends from adjacent the matrix element 16 in the faceplate 14 into the tube neck 12 where it is electrically connected by snubbers 24 to the anode element. The matrix 16 may comprise a number of laterally arranged insulatingly spaced conductive members extending from the internal to the external surface of the matrix, the members being spaced by at least six times their own diameter. Also the matrix may be polished on its inner face with a 400 grit polish. In an alternative method the interior surface of the tube envelope is coated with a hydrated material and the tube is then air-baked to drive off the water vapour prior to attaching the matrix and stored in an anhydrous atmosphere until the matrix element is sealed thereto. In prior art described, the anode coating is of "Aquadag" (R.T.M.) which is airbaked when the matrix has been sealed to the envelope, and matrix arcing is reduced by a process involving sandblasting and acid etching the matrix prior to providing the anode coating.
GB38021/66A 1965-08-30 1966-08-24 Electrostatic Writing Tube and method of manufacture Expired GB1152336A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48351065A 1965-08-30 1965-08-30
US74811068A 1968-06-18 1968-06-18

Publications (1)

Publication Number Publication Date
GB1152336A true GB1152336A (en) 1969-05-14

Family

ID=27047680

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38021/66A Expired GB1152336A (en) 1965-08-30 1966-08-24 Electrostatic Writing Tube and method of manufacture

Country Status (2)

Country Link
US (1) US3574909A (en)
GB (1) GB1152336A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033450B2 (en) * 2006-03-13 2011-10-11 Smi Holdings, Inc. Expression codes for microparticle marks based on signature strings

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734141A (en) * 1956-02-07 hughes
US2135615A (en) * 1936-02-11 1938-11-08 Farnsworth Television Inc Multipactor
US2200911A (en) * 1938-01-12 1940-05-14 Hygrade Sylvania Corp Sealed lead-in for cathode-ray tubes and the like
US2516663A (en) * 1947-09-20 1950-07-25 Gen Electric X Ray Corp Conductive coating on glass
US2545120A (en) * 1948-02-27 1951-03-13 Rca Corp Cathode-ray tube arc-over preventive
US2650191A (en) * 1948-12-29 1953-08-25 Bell Telephone Labor Inc Preparation of two-sided mosaic
US2562163A (en) * 1949-03-01 1951-07-31 Philips Lab Inc Electric discharge tube
US3041611A (en) * 1957-05-01 1962-06-26 Burroughs Corp Electrographic printing tube having filamentary conductive target
US2951962A (en) * 1959-05-22 1960-09-06 Rca Corp Pickup tube assembly
US3164738A (en) * 1960-07-20 1965-01-05 Litton Ind Of California Direct writing cathode ray tube using a fan shaped beam
US3173049A (en) * 1961-08-14 1965-03-09 Burroughs Corp Printing head in cathode ray tube face
US3230600A (en) * 1962-09-25 1966-01-25 Rca Corp Method of fabricating a cathode ray tube

Also Published As

Publication number Publication date
US3574909A (en) 1971-04-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee