Abstract: An apparatus for printing using an inkjet cartridge includes a fixed top portion and first and second fixed side portions coupled to the top portion. The apparatus also includes a third side portion disposed adjacent to the first fixed side portion and adapted to receive a printhead cartridge in a fixed relation thereto. The apparatus also includes an adjustment mechanism for adjusting the position of third side portion relative to the fixed side portions.

Abstract: Non-magnetic toner in a fluidized bed is charged by at least one corona wire extending through the bed, the non-magnetic toner surrounding the wire in the fluidized bed. In order to prevent build up of insulating particles on the corona wire (which leads to a change in electric field gradient and eventually adversely impacts on the uniformity of the image applied to the substrate with the toner) is substantially precluded by vibrating the wire to shake toner particles off the wire. Vibration is accomplished at spaced points in time, such as by utilizing a rod having an irregular (e.g. substantially sinusoidal shaped) surface and by reciprocating the rod to cause the irregular surface to engage the wire and cause a quick rise and release thereof, so that the wire goes through a wide series of frequencies when vibrating. The rod may be reciprocated by a pneumatic cylinder, and may be of stainless steel having a substantially circular cross section with a diameter between about 0.02-0.04 inches.

Abstract: Electrically conductive magnetic toner is supplied to an electrostatic printing apparatus by dispensing it pneumatically from one of two different toner bottles mounted on dispenser blocks. The toner passes through a chute into a container having an air previous, toner impervious, bottom. The toner particles are fluidized in the container, and come into contact with the rotating surface of an applicator roller having interior magnets, and the amount of toner which stays on the applicator roller surface is controlled in part by rotating the surface past a metering blade. To periodically declump the toner, a mechanical element is depressed which reverses the direction of the applicator roller, and brings a scraper blade into contact with the surface of the applicator roller, and applies a high level of vacuum to remove scraped off toner.