Patent ID: 6991835

Claim:
An unimaged ink jet recording element comprising a support having thereon an image-receiving layer, said ink jet recording element containing core/shell particles wherein said shell of said particles consists of a metal(oxy)hydroxide complex, M n+ (O) a (OH) b (A p− ) c . x H 2 O, wherein M is at least one metal ion; n is 3 or 4; A is present and is an organic ion or an inorganic ion other than hydroxy; p is 1, 2 or 3; and x is equal to or greater than 0; with the proviso that when n is 3, then a, b and c each comprise a rational number as follows: 0≦a<1.5; 0<b<3; and 0<pc<3, so that the charge of the M 3+ metal ion is balanced; and when n is 4, then a, b and c each comprise a rational number as follows: 0≦a<2; 0<b<4; and 0≦pc<4, so that the charge of the M 4+ metal ion is balanced.