Abstract: A mass analysis magnet assembly (16) is provided for use in an ion implanter (10), comprising: (i) a magnet (44) for mass analyzing an ion beam (15) output by an ion source (14), the magnet providing an interior region (49) through which the ion beam passes; and (ii) at least one strike plate (48) in part forming an outer boundary of the interior region (49). The at least one strike plate is comprised of an isotopically pure carbon-based material. The isotopically pure carbon-based material, preferably by mass greater than 99% carbon C-12, prevents neutron radiation when impacted by deuterons extracted from the ion source (14). The strike plate (48) may comprise an upper layer (56) of isotopically pure carbon C-12 isotope positioned atop a lower substrate (54).

Abstract: An apparatus for transferring a developed toner image from an image bearing surface to a support substrate including a corona generating device for establishing a transfer field, and a pressure treatment apparatus for compacting the toner image on the image bearing surface. The pressure treatment apparatus substantially prevents premature transfer of toner across air gaps between the image bearing surface and the support substrate.