| 摘要 |
<p>A pigment-based ink jet ink set and image-recording element and composition combination is described, wherein the ink jet image-recording element has a gloss value of at least 5 when measured at 60 DEG , and wherein each ink in the ink set has a normalized differential specular reflectance, N DELTA RS(X), of less than 1.25. N DELTA RS(X) is defined as the maximum value within a set of N DELTA RS(Xn) values in which each N DELTA RS(Xn) is the normalized specular reflectance for a density patch of a printed test image. The printed test image consists of a series of at least eleven density patches printed such that the ink laydown of the patches increases incrementally, from no ink laydown to a maximum level generating a density of at least 1.5; and wherein N DELTA RS(Xn) for each patch is determined according to: <DF>N DELTA RS(Xn) = ÄRSmax(Xn) - RSmin(Xn)Ü DIVIDED RSmean(Xn) </DF> where, over the visible spectral region between 390 nm and 720 nm for patch Xn, RSmax(Xn) is the maximum, RSmin(Xn) is the minimum, and RSmean(Xn) is the average specular reflectance. <IMAGE></p> |
