ES391512A1 - Photographic process for preparing a screen structure for a cathode-ray tube - Google Patents

Photographic process for preparing a screen structure for a cathode-ray tube

Info

Publication number
ES391512A1
ES391512A1 ES391512A ES391512A ES391512A1 ES 391512 A1 ES391512 A1 ES 391512A1 ES 391512 A ES391512 A ES 391512A ES 391512 A ES391512 A ES 391512A ES 391512 A1 ES391512 A1 ES 391512A1
Authority
ES
Spain
Prior art keywords
light
intensity
film
screen structure
preparing
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
ES391512A
Other languages
Spanish (es)
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of ES391512A1 publication Critical patent/ES391512A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
    • H01J9/2272—Devices for carrying out the processes, e.g. light houses

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)

Abstract

A photographic procedure for preparing a screen structure for a cathode ray tube, in which the screen structure is formed by exposing a photosensitive film on a surface of the tube face plate to light passing through a perforated mask, the method of which comprises the control of the intensity of the light that falls on the film by projecting light that has a predetermined initial intensity through the mask, onto the film, characterized in that after a short time delay a part of the light transmitted to Through the mask, a signal indicative of the intensity of the transmitted light is produced, and the intensity of the light is continuously adjusted in response to said signal, to provide a total incident luminous flux on said film. (Machine-translation by Google Translate, not legally binding)
ES391512A 1970-06-01 1971-05-25 Photographic process for preparing a screen structure for a cathode-ray tube Expired ES391512A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4232270A 1970-06-01 1970-06-01

Publications (1)

Publication Number Publication Date
ES391512A1 true ES391512A1 (en) 1973-07-01

Family

ID=21921227

Family Applications (1)

Application Number Title Priority Date Filing Date
ES391512A Expired ES391512A1 (en) 1970-06-01 1971-05-25 Photographic process for preparing a screen structure for a cathode-ray tube

Country Status (7)

Country Link
US (1) US3636836A (en)
CA (1) CA945420A (en)
DE (1) DE2126783A1 (en)
ES (1) ES391512A1 (en)
FR (1) FR2095645A5 (en)
GB (1) GB1345545A (en)
NL (1) NL7107393A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922689A (en) * 1972-05-01 1975-11-25 Zenith Radio Corp Optical system for a lighthouse enclosure
US3949226A (en) * 1972-05-26 1976-04-06 Zenith Radio Corporation Automatic light intensity controller for CRT lighthouse
US3953209A (en) * 1973-08-20 1976-04-27 Rca Corporation Method for preparing supplemental filter for lighthouse
US4059834A (en) * 1974-03-13 1977-11-22 Matsushita Electronics Corporation Light exposing apparatus for forming a phosphor screen of a cathode ray tube
US4187013A (en) * 1975-10-06 1980-02-05 Hitachi, Ltd. Phosphor screen exposure apparatus
US4052725A (en) * 1976-08-02 1977-10-04 Rca Corporation Cathode-ray tube screening exposure method
US4416521A (en) * 1981-05-28 1983-11-22 Rca Corporation System and method for determining the light transmission characteristics of color picture tube shadow masks
US4370036A (en) * 1981-05-28 1983-01-25 Rca Corporation System and method for intermittently moving a picture tube panel on a lighthouse
US4436394A (en) * 1981-05-28 1984-03-13 Rca Corporation System and method for controlling the exposure of color picture tube phosphor screens
FR2582858B1 (en) * 1985-06-04 1988-11-10 Videocolor METHOD AND APPARATUS FOR ILLUMINATING THE SLAB OF A COLORED TELEVISION TUBE FOR SCREEN FORMATION
US5071380A (en) * 1989-07-13 1991-12-10 Mitsubishi Denki Kabushiki Kaisha Method and apparatus for forming patterns of fluorescence on a color crt
EP0625776B1 (en) * 1989-10-04 1997-01-08 Mitsubishi Denki Kabushiki Kaisha Magnetic recording and reproducing apparatus
GB2367013B (en) * 2000-08-25 2004-10-06 Brian Alzano-Mayes Indicator device
GB2439746A (en) * 2006-07-03 2008-01-09 Dublin Inst Of Technology A holographic method and sensor
TWI678121B (en) * 2016-10-20 2019-11-21 宏達國際電子股份有限公司 Auxiliary apparatus for a lighthouse positioning system

Also Published As

Publication number Publication date
US3636836A (en) 1972-01-25
GB1345545A (en) 1974-01-30
CA945420A (en) 1974-04-16
NL7107393A (en) 1971-12-03
DE2126783A1 (en) 1971-12-16
FR2095645A5 (en) 1972-02-11

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