GB1228388A - - Google Patents

Info

Publication number
GB1228388A
GB1228388A GB1228388DA GB1228388A GB 1228388 A GB1228388 A GB 1228388A GB 1228388D A GB1228388D A GB 1228388DA GB 1228388 A GB1228388 A GB 1228388A
Authority
GB
United Kingdom
Prior art keywords
group
per cent
component
mole per
yttrium vanadate
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
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 filed Critical
Publication of GB1228388A publication Critical patent/GB1228388A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
    • G11C13/048—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using other optical storage elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/12—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using a selected wavelength, e.g. to sense red marks and ignore blue marks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Luminescent Compositions (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Character Input (AREA)

Abstract

1,228,388. Luminescent materials and uses thereof. AMERICAN CYANAMID CO. 23 July, 1968 [7 Sept., 1967], No. 35176/68. Heading C4S. [Also in Division G4] A bar code is recorded using two or more photo-luminescent components A, B, C, each code group comprising as many areas as there are possible components, and the areas partially overlapping so that significant masking of one component by another is avoided while achieving high information density. The presence or absence of each component in a group is determined by sequentially scanning the group and separating the different luminescence radiation bands, e.g. by dichroic mirrors. Examples of materials used are: yttrium vanadate doped with 0À6 mole per cent dysprosium; trischelate of europium with 1,1,2,2-pentafluorohepta - 3,5 - dione and trioctyl phosphine oxide as a synergic agent; yttrium vanadate doped with 0À6 mole per cent samarium.
GB1228388D 1967-09-07 1968-07-23 Expired GB1228388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66610367A 1967-09-07 1967-09-07

Publications (1)

Publication Number Publication Date
GB1228388A true GB1228388A (en) 1971-04-15

Family

ID=24672835

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1228388D Expired GB1228388A (en) 1967-09-07 1968-07-23

Country Status (6)

Country Link
BE (1) BE720497A (en)
CH (1) CH495585A (en)
DE (1) DE1774705A1 (en)
FR (1) FR1582685A (en)
GB (1) GB1228388A (en)
NL (1) NL6812760A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189800A (en) * 1986-04-07 1987-11-04 Michael Anthony West Marking of articles
US6297508B1 (en) 1998-08-10 2001-10-02 Cryovac Inc. Method of determining authenticity of a packaged product

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10206998B4 (en) * 2002-02-19 2004-03-25 Barcodat Gmbh Method and device for the forgery-proof marking of objects

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189800A (en) * 1986-04-07 1987-11-04 Michael Anthony West Marking of articles
GB2189800B (en) * 1986-04-07 1990-03-14 Michael Anthony West Marking of articles
US5005873A (en) * 1986-04-07 1991-04-09 West Michael A Marking of articles
US6297508B1 (en) 1998-08-10 2001-10-02 Cryovac Inc. Method of determining authenticity of a packaged product

Also Published As

Publication number Publication date
CH495585A (en) 1970-08-31
BE720497A (en) 1969-03-06
DE1774705A1 (en) 1972-02-10
NL6812760A (en) 1969-03-11
FR1582685A (en) 1969-10-03

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees