BE744171A - Procede d'elargissement pour morsure en deux etapes pour ouvertures de masques d'ombre - Google Patents

Procede d'elargissement pour morsure en deux etapes pour ouvertures de masques d'ombre

Info

Publication number
BE744171A
BE744171A BE744171DA BE744171A BE 744171 A BE744171 A BE 744171A BE 744171D A BE744171D A BE 744171DA BE 744171 A BE744171 A BE 744171A
Authority
BE
Belgium
Prior art keywords
shadow mask
enlargement process
mask openings
bite
step bite
Prior art date
Application number
Other languages
English (en)
Inventor
J J Frantzen
Original Assignee
Buckbee Mears Co
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 Buckbee Mears Co filed Critical Buckbee Mears Co
Publication of BE744171A publication Critical patent/BE744171A/fr

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
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • ing And Chemical Polishing (AREA)
BE744171D 1969-08-15 1970-01-08 Procede d'elargissement pour morsure en deux etapes pour ouvertures de masques d'ombre BE744171A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85045069A 1969-08-15 1969-08-15

Publications (1)

Publication Number Publication Date
BE744171A true BE744171A (fr) 1970-06-15

Family

ID=25308134

Family Applications (1)

Application Number Title Priority Date Filing Date
BE744171D BE744171A (fr) 1969-08-15 1970-01-08 Procede d'elargissement pour morsure en deux etapes pour ouvertures de masques d'ombre

Country Status (7)

Country Link
US (1) US3609033A (fr)
JP (1) JPS501870B1 (fr)
BE (1) BE744171A (fr)
DE (1) DE2005151A1 (fr)
FR (1) FR2057648A5 (fr)
GB (1) GB1252713A (fr)
NL (1) NL7009574A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4926590B1 (fr) * 1970-09-03 1974-07-10
US3861798A (en) * 1972-05-22 1975-01-21 Hitachi Ltd Mask for aligning patterns
US3929532A (en) * 1974-07-17 1975-12-30 Rca Corp Method for etching apertured work piece
US3909311A (en) * 1974-08-05 1975-09-30 Hitachi Ltd Shadow mask for use in color picture tube and method for fabricating same
JPS5947946U (ja) * 1982-09-21 1984-03-30 大同特殊鋼株式会社 多段ロ−タリスイツチ
US5348825A (en) * 1991-07-02 1994-09-20 Dai Nippon Printing Co., Ltd. Method for manufacturing shadow mask and shadow mask manufactured by said method
EP0641009B1 (fr) * 1993-08-25 2000-01-05 Kabushiki Kaisha Toshiba Tube à rayons cathodiques couleur et procédé de fabrication

Also Published As

Publication number Publication date
FR2057648A5 (fr) 1971-05-21
GB1252713A (fr) 1971-11-10
DE2005151A1 (de) 1971-02-25
US3609033A (en) 1971-09-28
JPS501870B1 (fr) 1975-01-22
NL7009574A (fr) 1971-02-17

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