Patent ID: 7833439

Claim:
An infrared-absorbing composition, the dry portion of which comprises, prior to firing: a. About 65 to about 93 wt % of a silver component comprising silver powder having a tap density of about 0.4 to about 4.3 g/cc; b. about 0.1 to about 5 wt % of a borosilicate glass fit comprising an oxide of a metal selected from the group consisting of lead, zinc, bismuth, and combinations thereof; c. about 5 to about 10 wt % of a co-ground blend of i. a glass fit comprising an oxide of a metal selected from the group consisting of lead, zinc, bismuth and combinations thereof and ii. a metal powder selected from the group consisting of selenium and bismuth, and combinations thereof; d. about 1 to about 10 wt % of carbon black; e. about 0.1 to about 5 wt % of inorganic black pigment; and f. about 0.1 to about 5 wt % of a staining compound, the staining compound comprising: i. about 30 wt % to about 50 wt % of Ag 3 PO 4 ; ii. about 30 wt % to about 50 wt % of MoO 3 ; and iii. about 15 wt % to about 25 wt % of FeCr 2 O 4 ; wherein the staining compound particle D 50 is less than 74 microns.