Surface treatment of silica-coated phosphor particles and method

Coating processes – Electrical product produced – Welding electrode

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

427 64, 427 68, B05D 312

Patent

active

049217275

ABSTRACT:
A method of surface-treating dry-powdered phosphor particles to control the triboelectric charge characteristics thereof includes the steps of providing the phosphor particles with a first coating of silica, dissolving a coupling agent selected from the group consisting of silanes and titanates in a suitable solvent to form a mixture, surface-coating the silica-coated phosphor particles with the mixture to provide a second coating of the coupling agent on the phosphor particles, filtering the surface-treated particles, rinsing the surface-treated particles with the solvent, and drying the surface-treated particles. The resultant dry-powdered surface-treated phosphor particles are used to make a luminescent viewing screen for a CRT. The coupling agent overlying the silica coating controls the triboelectric charging characteristics of the phosphor particles during the electrophotographic manufacturing of the screen.

REFERENCES:
patent: 2625734 (1953-01-01), Law
patent: 3475169 (1969-10-01), Lange
patent: 3489556 (1970-01-01), Drozd
patent: 3489557 (1970-01-01), Lange et al.
patent: 3522071 (1970-07-01), Yokota et al.
patent: 3927224 (1975-12-01), Levene
patent: 4049845 (1977-09-01), Lozier et al.
patent: 4287229 (1981-09-01), Watanabe et al.
patent: 4379762 (1983-04-01), Chiyoda et al.
patent: 4440831 (1984-04-01), Brownlow
patent: 4448866 (1984-05-01), Olieslagers et al.
patent: 4620133 (1986-10-01), Morrell et al.
patent: 4717590 (1988-01-01), Wolfe et al.
patent: 4737434 (1988-04-01), Gruber et al.
patent: 4741984 (1988-05-01), Imai et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Surface treatment of silica-coated phosphor particles and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surface treatment of silica-coated phosphor particles and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface treatment of silica-coated phosphor particles and method will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-828707

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.