8. Document Security Flashcards
What are the secruity fratures ?
Fluorescing material Watermakrs Special links Intaglio printing Micropaint Holograms - methal threads
Bame two secure documents
Passport
Bank notes
What is fluorescence?
The emission of light by a substance that has absorbed light or other electromagnetic radiation
Explain photoluminescent
Incident like energy excites electrkn to higher energy level
Decay invovles an intermediate state
Theres a partially loss of energy becauseof
Chemical chane/ vibration/atomic collision
Rest of energy lsot by emitted light
Was the first recorded use the Paper money
7th century
When was the first running cash note ? Whow as it issued by?
16th century and goldsmith bankers
When was the first fully printed note ?
1855
When was the first coloured note ?
1928
When was the counterfeit case who was it and what happened ?
1695, daniel perriore, faked 60 £100 notes
In 1999 what features were incorporated in notes ?
Foil hologram, micropront, fluorescnet features
In what ways can bank notes be destroyed ?
Chewed, torn, fire damage, ckntaminated, washed
Most claimed reaosn for runing bank notes in 2015 was ?
Chewed/eaten
What was cost of chewed bank notes
£127,000
How many soecial inks are used to lroduce uk notes ?
80
How is a water mark created?
Is created by making a pattern that has different fibre density compared to the rest of the paper note
How can a water mark be seen ?
Under transmitted light
What are the two types of water marks ?
Multi-tonal
Electrotype
Whats a security thread
Thread woven theough paper
How is raised lrinting detected
By touch
How is raised lrinting done
Ink placed in grooves engraved on plate, plate and paper meet ink forcibly transfered = raised
What is micro printing ?
Tiny printed words often form design
What suze microprontinf can be read with naked eye and what cant
- 8mm can
0. 2 seen as thin line
Whats a see through register ?
Its design element where two parts of a design in consecutive pages are viewed together to form a complete image
What is a window ?
Clear area of polymer- only on polymer notes
What country started clear windows on polymer notes ?
Australia in 1988
What security features are on a passport?
Watermarks UV features Raised print hologram mciroprint
Also
Latent imaging
Candy stripe fibres
Laser perforation
What are the types of laser perforation?
Logo perf
Number perf
destri perf
What is laser perforation?
Laser creates holes which have no reverse embossing
When are candy stripe features visible?
Visible in both normal and uv light, appears in random arrangements
Where are latent images found?
Front cover
What year did criss oage lrinting start
2010 more sophisticated
4 ways to examine documents
Visual examination
Screening techniques
Analytical methods : microscopic spectroscopy
Destructive analysis : chromatography and chemical analysis
