Milling a compound useful in imaging elements using polymeric milling media
AssigneeEastman Kodak Company
InventorsDavid A. Czekai, Dennis E. Smith, John F. Bishop, Paul E. Woodgate, James R. Bennett
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Abstract
Particles of compound useful in imaging elements are milled using a milling media comprising a polymeric resin. The use of polymeric milling media permits the production of particles having an average particle size less than 1 micron. Further, the resulting particles are free from the contamination resulting from conventional milling media of, for example, glass, ceramic or steel.
Claims13
A process for the preparation of solid particles of a compound useful in photographic, electrophotographic, or thermal transfer imaging elements having an average particle size of less than 1 micron selected from the group consisting of dye-forming couplers, development inhibitor release couplers (DIR's), development inhibitor anchimeric release couplers (DI(A)R's), masking couplers, filter dyes, thermal transfer dyes, optical brighteners, nucleators, development accelerators, oxidized developer scavengers, ultraviolet radiation absorbing compounds, sensitizing dyes, development inhibitors, antifoggants, bleach accelerators, magnetic particles, lubricants, and matting agents, which comprises milling said compound in the presence of milling media comprising a polymeric resin.
Dependencies are inferred from the claim text.