Microencapsulation method and recording sheet

Details Microencapsulation method and recording sheet Microencapsulation method and recording sheet

B - Operations, Transporting

41

M

B41M 5/165 (2006.01) B01J 13/02 (2006.01)

Patent

CA 2351861

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.

Procédé de production d'un système micro-encapsulé qui consiste (a) à émulsifier une solution de précurseur de couleur dans un solvant en tant que première phase interne et un diluant en tant que seconde phase interne dans une phase externe pour produire des gouttelettes séparées de chacune des première et seconde phases, et (b) à encapsuler lesdites gouttelettes. La présente invention concerne également une feuille d'enregistrement qui comporte un substrat doté d'une couche de microcapsules contenant une solution de précurseur de couleur et de microcapsules contenant un diluant. De préférence, les microcapsules sont des amas de capsules de gélatine.

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