Abstract: A seal for a rotary shaft extending from a container containing agitated abrasive particulates through a wall of the container. The seal includes a first polymeric member around the shaft and in engagement with the wall of the container with the shaft rotating inside the first member. The first member is in engagement with a second polymeric member positioned around the shaft for rotation with the shaft and relative to the first member. A third compressible member is positioned around the shaft for rotation with the shaft and the second member. A retaining ring maintains the first, second and third members in compression between the retaining ring and the wall.

Abstract: A cassette storage and delivery apparatus having a plurality of cassette retaining sites. The apparatus having a body having a portal adjoining the cassette sites for allowing the cassettes to be placed onto or removed from the cassette retaining sites. The apparatus further includes a pair of guide panels, one on each side of the portal. The guide panels each having a guide surface. The guide surface is provided with a shock absorbing protective layer.

Abstract: A seal-forming device for a replenishment toner receiving aperture of a development apparatus includes a resilient member mounted to the development apparatus and around the aperture. The seal-forming device also includes a woven fabric that is mounted to the resilient member and to a part of the development apparatus. The woven fabric has warp and filling fibers. The warp fibers are larger than the filling fibers and are mounted to lie in the direction of loading and unloading a replenishment toner container relative to the seal-forming device.