| 摘要 |
PURPOSE:To enable a large number of sharp copies good in reproducibility of thin lines and gradation to be successively made by adding a specified org. tin compd. on the surface of a developing charge applying member, such as a carrier and developing sleeve, for giving electrostatic charge to a toner. CONSTITUTION:The charge applying carrier is obtained by dissolving or dispers ing the org. tin compd. represented by the formula shown on the right, R being an unsatd. hydrocarbon optionally substd. by a group, such as halogen or amino, in a solvent, such as methyl ethyl ketone, immersing particles for the carrier, such as iron powder or glass beads, into this soln., and removing the solvent, or the charge applyingsleeve coated with the org. tin compd. on the surface is obtained by adding the tin compd. into a soln. dissolving a polymethacrylate resin as a binder, dipping the sleeve in the soln., taking it out, and drying it, thus permitting the toner to be uniformly and stably charged and fog-free sharp color images to be formed. |
