Phase change ink composition
AssigneeXerox Corporation
InventorsC. Wayne Jaeger, Clifford R. King
Life of this patent
Estimating the term…
Abstract
A phase change ink composition comprising a phase change ink carrier system in combination with a compatible colorant system, the colorant system comprising a combination of (1) a black colorant having an absorbance in the 475 nanometer region which is less than 80 percent of the absorbance at the 580 nanometer region and (2) a sufficient amount of at least one other colorant having an absorbance in the 475 nanometer region whereby the colorant has a ratio of absorbance in the 475 nanometer region to the 580 nanometer region from about 0.92:1.0 to about 1.01:1.0
Claims18
A method of printing a medical image on a transparent substrate comprising the steps of:
- a. creating an image on an intermediate support surface using a plurality of inks each having a lightfast compatible black colorant system and an ink base, each compatible black colorant system having in combination
- 1. a black colorant characterized by a broad absorbance band throughout the human visible spectrum and having at least one low absorbance region and at least one high absorbance region within the visible spectrum;
- 2. at least one other colorant having an absorbance band in the low absorbance region of the black colorant, the black colorant and the at least one other colorant being compatible with each other;
- and
- b. transferring the image from the intermediate support surface to the transparent substrate.
Dependencies are inferred from the claim text.