| 摘要 |
PROBLEM TO BE SOLVED: To provide a marked silver halide photographic display element for detecting the kind of a medium used in an image forming device such as a printer or a scanner. SOLUTION: The silver halide photographic display element comprises a support, a front side which has at least one silver halide emulsion layer, and a back side, the front and back sides being on opposite sides of the support. This element further comprises printed on the back side a printing ink composition comprising coalesced hydrophobic polymer particles having associated therewith a squarine infrared absorbing dye represented by formula I: wherein: R and R' independently represents an aromatic or a heteroaromatic group such that the resulting dye has an absorption max greater than 800 nm; X represents an oxygen or nitrogen atom, or a group containing an oxygen or a nitrogen atom as a heteroatom, wherein the group must be attached through the heteroatom; W is a monovalent counter anion to balance the charge on the dye and m is 0 or 1. COPYRIGHT: (C)2005,JPO&NCIPI |
