Abstract: A method for reducing toning spacing sensitivity in an electrophotographic process is disclosed. The method includes providing a rotating magnetic member within a conductive non-magnetic development sleeve; providing a developer to the non-magnetic development sleeve for use with the rotating magnetic member including: (i) composite magnetic particles comprising strontium ferrite and lithium ferrite phases and (ii) toner particles. The method further includes moving a charged receiving medium into a toner transfer relationship with the developer on the non-magnetic development sleeve so as to provide a developed image on the receiving medium with reduced toning spacing sensitivity.

Abstract: (Barium hafnate:Ti,Ce,Pb) phosphors, phosphor screens and phosphor preparation method. The phosphor screen includes a support and a luminescent portion. The phosphor includes oxygen and a combination of species characterized by the relationship:(Ba.sub.1-d M.sub.d)(Hf.sub.1-z-e Zr.sub.z Mg.sub.e):yCe,y'Ti,y"Pbwhere M is selected from the group consisting of Ca, and Sr, and combinations thereof; d is from 0 to 0.05; z is from 0 to 0.25; e is from 0 to 0.15; y is from 0 to 0.025; y' is from 0 to 0.05; y" is from 0 to 0.01; and y+y'+y" is from 1.times.10.sup.-6 to 0.05. The phosphor is x-ray luminescent at a temperature of 300.degree. K.

Abstract: (Barium halfnate:Cu) phosphors and phosphor screens. The phosphor screens include a support and a luminescent portion. The phosphor includes oxygen and a combination of species characterized by the relationship: (Ba.sub.1-q M.sub.q)(Hf.sub.1-z-e Zr.sub.z Mg.sub.e):yT where M is selected from the group consisting of Ca and Sr and combinations thereof; T is Cu; q is from 0 to 0.15; z is from 0 to 1; e is from 0 to 0.10; z+e is from 0 to 1; and y is from 1.times.10.sup.-6 to 0.02.