Radiation imagery chemistry: process – composition – or product th – Microcapsule – process – composition – or product
Patent
1986-09-24
1989-01-10
Goodrow, John L.
Radiation imagery chemistry: process, composition, or product th
Microcapsule, process, composition, or product
42840221, G03G 916
Patent
active
047973447
ABSTRACT:
An encapsulated toner is provided by coating core particles with an outer shell. The outer shell comprises, as predominant components thereof, vinyl polymers A and B of different molecular weights. More specifically, the ratio of the number-average molecular weight of the vinyl polymer A (Mn.sub.A) to that of the vinyl polymer B (Mn.sub.B) is in the range of 2 to 15. The vinyl polymers A and B respectively have a ratio of weight-average molecular weight to number-average molecular weight of 5 or less. Because of these specific molecular weight characteristics of the shell-constituting polymers, the durability and triboelectric charging characteristics of the encapsulated toner are improved. These effects are enhanced particularly when inorganic fine particles are attached to embedded in the surface or surface layer of the core particles.
REFERENCES:
patent: 4259426 (1981-03-01), Hasegawa
patent: 4497885 (1985-02-01), Ushiyama
patent: 4517273 (1985-05-01), Inoue
patent: 4533617 (1985-08-01), Inoue et al.
patent: 4565764 (1986-01-01), Nakahara et al.
patent: 4581312 (1986-04-01), Nakahara et al.
patent: 4599289 (1986-07-01), Suematsu
patent: 4661430 (1987-04-01), Wakamiya
Goseki Yasuhide
Kiuchi Masashi
Nakahara Toshiaki
Ochi Hisayuki
Ohsaki Ichiro
Canon Kabushiki Kaisha
Goodrow John L.
LandOfFree
Encapsulated toner having shell with first vinyl polymer with Mn does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Encapsulated toner having shell with first vinyl polymer with Mn, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Encapsulated toner having shell with first vinyl polymer with Mn will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2107490