Owner Silverbrook Research Pty Ltd

Inventors Lapstun, Paul; Silverbrook, Kia

Agent Silverbrook Research Pty Ltd

Pub. Number AU-B-2004227426

PCT Pub. Number WO2004/090803

Priority 2003901795 15.04.03 AU; 2003901617 07.04.03 AU

Filing date 2 April 2004

Wipo publication date 21 October 2004

Acceptance publication date 4 October 2007

G06K 19/06 (2006.01) Record carriers for use with machines and with at least a part designed to carry digital markings - characterised by the kind of the digital marking, e.g. shape, nature, code

B41J 2/01 (2006.01) Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed - Ink jet

C09B 49/12 (2006.01) Sulfur dyes

C09B 57/10 (2006.01) Other synthetic dyes of known constitution

C09D 11/00 (2006.01) Inks

C09D 11/02 (2006.01) Inks - Printing inks

D21H 19/38 (2006.01) Coated paper

G01N 33/48 (2006.01) Investigating or analysing materials by specific methods not covered by groups - Biological material, e.g. blood, urine

G01N 33/50 (2006.01) Investigating or analysing materials by specific methods not covered by groups - Chemical analysis of biological material, e.g. blood, urine

G05B 15/00 (2006.01) Systems controlled by a computer

G06F 3/08 (2006.01) Input arrangements for transferring data to be processed into a form capable of being handled by the computer - from or to individual record carriers, e.g. punched card

G06F 7/00 (2006.01) Methods or arrangements for processing data by operating upon the order or content of the data handled

G06F 7/02 (2006.01) Methods or arrangements for processing data by operating upon the order or content of the data handled - Comparing digital values

G06F 7/08 (2006.01) Methods or arrangements for processing data by operating upon the order or content of the data handled

G06F 15/00 (2006.01) Digital computers in general

G06F 17/00 (2006.01) Digital computing or data processing equipment or methods, specially adapted for specific functions

G06F 17/30 (2006.01) Digital computing or data processing equipment or methods, specially adapted for specific functions - Information retrieval

G06F 19/00 (2006.01) Digital computing or data processing equipment or methods, specially adapted for specific applications

G06K 5/00 (2006.01) Methods or arrangements for verifying the correctness of markings on a record carrier

G06K 7/00 (2006.01) Methods or arrangements for sensing record carriers

G06K 7/10 (2006.01) Methods or arrangements for sensing record carriers - by electromagnetic radiation, e.g. optical sensing

G06K 7/14 (2006.01) Methods or arrangements for sensing record carriers - using light without selection of wavelength, e.g. sensing reflected white light

G06K 9/00 (2006.01) Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

G06K 9/18 (2006.01) Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints - using printed characters having additional code marks or containing code marks, e.g. the character being composed of individual strokes of different shape, each representing a different code value