Magnetic application of light-absorbing particles to a lenticula

Details Magnetic application of light-absorbing particles to a lenticula Magnetic application of light-absorbing particles to a lenticula

1986-12-05

1987-09-08

Page, Thurman K.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

350127, 350128, 350126, 350129, 430 42, 430 97, B05D 302

Patent

active

046923594

ABSTRACT:
A method for selectively applying particles having cores of magnetically-permeable material and outer, fusible surfaces to a lenticular, light-transmissive screen, such as a projection television screen. The particles are selectively deposited in grooves between lenticules of the screen by magnetically attracting the particles to tips of a particle carrier sheet which positionally correspond with the grooves in the screen. The screen is then positioned underneath the carrier sheet, and the magnetic attractive force is reduced to effect release of the particles into the grooves of the screen. Microwave radiation is applied to the screen with the deposited particles, and the magnetically-permeable cores concentrate microwave energy dissipation in the particles and effect selective heating of the particles until their outer surfaces fuse to each other and to the screen.

REFERENCES:
patent: 4533764 (1986-03-01), Bradley
patent: 4605283 (1986-08-01), Stanton

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