Abstract: A process for producing a microencapsulated system comprising the steps of: (a) emulsifying a solution of color precursor in a solvent as a first internal phase and a diluent as a second internal phase in an external phase to produce discrete droplets of each of said first and second phases; and (b) encapsulating said droplets, is disclosed. A recording sheet is also disclosed which comprises a substrate having a layer of microencapsules containing a color precursor solution and microcapsules containing a diluent. Preferably the microcapsules are clusters of gelatin capsules.
Type:
Grant
Filed:
November 23, 1998
Date of Patent:
August 15, 2000
Assignee:
The Mead Company
Inventors:
Peter C. Yao, Datta G. Mislankar, Glenn E. Bane, John K. Rourke