An ink formulation comprises a marking component and a metal salt that absorbs laser irradiation at 700-2000 mn and thereby causes the marking component to change colour. A copper salt in particular allows effective marking with a diode or CO
2
laser.
US8278243B2
申请人:——
公开号:US8278243B2
公开(公告)日:2012-10-02
[EN] LASER IMAGING<br/>[FR] IMAGERIE AU LASER
申请人:SHERWOOD TECHNOLOGY LTG
公开号:WO2005068207A1
公开(公告)日:2005-07-28
An ink formulation comprises a marking component and a metal salt that absorbs laser irradiation at 700-2000 mn and thereby causes the marking component to change colour. A copper salt is particular allows effective marking with a diode or C02 laser. I