Microcapsules used in image-forming substrate and process of pro

Details Microcapsules used in image-forming substrate and process of pro Microcapsules used in image-forming substrate and process of pro

1998-10-23

2000-10-31

Nutter, Nathan M.

Coating processes

Particles, flakes, or granules coated or encapsulated

Solid encapsulation process utilizing an emulsion or...

42721334, 42721336, 264 41, 264 433, 264 44, 264 47, B01J 1302, B01J 1304, B01J 1320, B01J 1322

Patent

active

061399140

ABSTRACT:
A microcapsule includes a shape memory resin shell wall formed with fissures that do not completely pass through the shell wall, and a dye encapsulated in the shell wall. The shell wall exhibits a temperature/pressure characteristic such that the fissures open, when the shell wall is squashed and compacted under a predetermined pressure at a predetermined temperature, whereby a seepage of the dye frog the squashed and compacted shell wall through the opened fissures is adjustable.

REFERENCES:
patent: 4399209 (1983-08-01), Sanders et al.
patent: 4440846 (1984-04-01), Sanders et al.
patent: 4644376 (1987-02-01), Usami et al.
patent: 5645920 (1997-07-01), Nishiyama

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