Photographic display elements comprising stable IR dye compositions for invisible marking

   
   

This invention relates to a photographic display element comprising a support, a front side which has at least one photographic imaging layer, and a back side, said front and back sides being on opposite sides of the support, wherein said photographic element further comprises applied on the front or back side a composition comprising coalesced hydrophobic polymer particles having associated therewith an infrared absorbing polymethine dye having covalently bonded thereto a phenylenediamine moiety.

 
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< Distance measuring apparatus

< Camera with indicator for determining position within the angle of view

> Method and system for creating anaglyphs

> Step motor with interpole pair stabilizing rest position

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