2015-07-29

imaging your collection ...

the complexity of security printing today requires various methods ...

with non-security issues, -2008 ...


  1. a scan of 300 dpi offer details of a machin, less phosphor bands ...  
  2. the same method applied to security machin, lacks data.  
  3. in sorting a value, I do a quick scan with a 15 led uv flashlite, separating items for imaging

  1. the iriodin overlay of white, requires white led illumination and a digital camera to reveal vars of shift and coding.   focus and variable light intensity are fine tuned.
  2. the phosphor capture on these issues, requires 15 LW uv bulbs and a special digital camera designed for stamp imaging ...  shizen icard camera.
  3. this work is best done after dark.
  4. objects must lay flat - otherwise, parallex and distortion follow ... post-it notes allow secure object and observation notes.
  5. security machins are best left on paper, until transfer to album or stockcard.   follow the heptane method, and transfer to paper or cellophane ...   the adhesive allows replacement with heptane application...


forgeries ...

  1. require a modified approach as dull non-phosphor paper is common
  2. FLOUR bands
  3. FUI results in anomolies of value inking ... as PUI vars on  genuine
  4. colours fail to match genuine
  5. details of diadem vary, to allow separation
  6. study the value tablets, and relation to security cuts  F/G - always compare to genuine