G - Physics – 03 – G
Patent
G - Physics
03
G
96/56
G03G 9/12 (2006.01)
Patent
CA 1181279
Abstract of the Disclosure A novel liquid composition for developing latent electrostatic images whereby to form a gap between the developed image and the carrier sheet to which the developed image is to be transferred. The composition is such that it contains both charged and uncharged spacer particles. The spacer particles are of larger diameter than the toner particles so as to form a gap between the developed image and the carrier sheet to which they are transferred. The spacer particles, furthermore, have a specific gravity lower than the specific gravity of the carrier liquid, which may be a low-boiling hydrocarbon. This is accomplished by having a gas bubble enclosed in a portion of the material of which the spacer particles are formed, which material is preferably glass. The charged spacer particles may be coated with a polymer of which the toner particles are formed. Both the coated spacer particles and the toner particles bear the same charge. The remainder of the spacer particles are substantially uncharged. The uncharged spacer particles will remain on the background areas of the developed image and prevent the carrier sheet from absorbing liquid present in the developing composition. The charged spacer particles will go to the image areas and become agglomerated with the toner.
410601
Macrae & Co.
Savin Corporation
LandOfFree
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