| 摘要 |
A composition for developing latent electrostatic images comprising an aliphatic hydrocarbon carrier liquid having dispersed therethrough charged pigmented toner particles having a low charge to mass ratio. The composition has an amount of spacer particles having their smallest diameter greater than twenty microns and greatest diameter less than seventy microns disseminated therethrough. The spacer particles are adapted to form an air gap between the developed electrostatic image on a photoconductor, or dielectric support, and the medium to which the developed image is to be transferrred. The population of the spacer particles is such that their interparticle distance on the photoconductor is four millimeters or less. The spacer particles may be formed of any desired material, insoluble in the carrier liquid, and have any desired shape. A tetrahedral pyramidal shape or spherical shape is preferred.
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