PROCESS FOR RECORDING AND RETRIEVING INFORMATION EMPLOYING PHOTOLUMINESCENT INKS WHICH LUMINESCE UNDER ULTRAVIOLET ILLUMINATION

• US 3,473,027 A
• Filed: 10/14/1966
• Issued: 10/14/1969
• Est. Priority Date: 03/08/1965
• Status: Expired due to Term

• Current Assignee: Frederick Halverson, Freeman Mark Phillips
• Original Assignee: Frederick Halverson, Freeman Mark Phillips
• Inventors: FREEMAN MARK PHILLIPS, Halverson, Frederick
• Application Number:
  US04/596,366
• Time in Patent Office: 1,096 Days
• US Class Current: 250/365
• CPC Class Codes: B07C 3/14 using light-responsive detecting means for information carriers G06K7/14
• CPC Class Codes: B07C 3/18 Devices or arrangements for indicating destination, e.g. by code marks applying data to information carriers G06K1/12
• CPC Class Codes: B41J 31/05 Ink ribbons having coatings other than impression-material coatings
• CPC Class Codes: B42D 25/387 absorbing or reflecting ultraviolet light
• CPC Class Codes: C07F 5/003 without C-Metal linkages
• CPC Class Codes: C09B 57/10 Metal complexes of organic compounds not being dyes in uncomplexed form
• CPC Class Codes: C09D 11/50 Sympathetic, colour changing or similar inks
• CPC Class Codes: C09D 5/22 Luminous paints luminescent compositions C09K11/00
• CPC Class Codes: C09K 11/74 containing arsenic, antimony or bismuth
• CPC Class Codes: C09K 11/77 containing rare earth metals
• CPC Class Codes: C09K 11/7769 Oxides C09K11/7768 takes precedence
• CPC Class Codes: C09K 11/7776 Vanadates; Chromates; Molybdates; Tungstates
• CPC Class Codes: G01N 21/64 Fluorescence; Phosphorescence
• CPC Class Codes: G06K 1/12 otherwise than by punching
• CPC Class Codes: G06K 1/123 for colour code marks
• CPC Class Codes: G06K 19/00 Record carriers for use with machines and with at least a part designed to carry digital markings
• CPC Class Codes: G06K 19/02 characterised by the selection of materials, e.g. to avoid wear during transport through the machine
• CPC Class Codes: G06K 19/06009 with optically detectable marking G06K19/063, G06K19/08 take precedence
• CPC Class Codes: G06K 19/08 using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
• CPC Class Codes: G06K 2019/06225 using wavelength selection, e.g. colour code
• CPC Class Codes: G06K 7/12 : using a selected wavelength, e.g. to sense red marks and ignore blue marks
• CPC Class Codes: G11B 7/003 : with webs , filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent

Claims