Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1982-10-22
1984-08-14
Welsh, John D.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430904, 4301066, 430 97, 430110, G03G 908
Patent
active
044657544
ABSTRACT:
A water fixable toner powder is provided for making powder images that can be transferred and fixed with good image quality onto receiving material such as paper by being covered with water, squeegeed and subsequently pressed against the receiving material. The individual particles of the toner powder consist essentially of hydrolyzed polyvinyl ester that is swellable but insoluble in water at a temperature up to 30.degree. C., such preferably as polyvinyl alcohol having a degree of hydroylsis above 98% and an average molecular weight of at least 4,000, together with finely divided filler material that is insoluble and non-swellable in water and is present in an amount of between 10 and 60% by volume. Other additives such as coloring material and/or a polarity control agent may also be present in the binder of hydrolyzed polyvinyl ester. Preferred forms of the toner particles are porous and have a specific surface of between 0.6 and 2m.sup.2 /g.
REFERENCES:
patent: 3080250 (1963-03-01), Claus
patent: 3124456 (1964-03-01), Moore
patent: 3185777 (1965-05-01), Rheinfrank
patent: 3196032 (1965-07-01), Seymour
patent: 3677759 (1982-07-01), Jones et al.
patent: 4058470 (1977-11-01), Moschovis et al.
Kuin Nicolaas P. J.
Pleyers Jozef J. A.
Johnston Albert C.
Welsh John D.
LandOfFree
Water-fixable electrostatic toner powder containing hydrolyzed p does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Water-fixable electrostatic toner powder containing hydrolyzed p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water-fixable electrostatic toner powder containing hydrolyzed p will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-114397