USE OF POWDERS FOR CREATING IMAGES ON OBJECTS, WEBS OR SHEETS

摘要

Monochromatic or multichromatic images may be created on surfaces. The su rface is moved to first, second and third stations. The surface is electrica lly biased, and powder is transferred to the surface electrostatically at th e first station. The powder is fused or sintered selectively on the surface at the second station. Unfused or unsintered portions of the powder are remo ved from the surface at the third station.