Abstract: A self-cleaning sprinkler is disclosed, generally comprised of an upper and lower housing, which encase a nozzle and a diaphragm. The diaphragm moves in an upward and downward position relative to the nozzle, which allows water located within a chamber to be expelled out of an exit aperture of the nozzle. A needle is secured within the diaphragm to correspondingly move in an upward and downward position, such that once in a closed position, the needle will penetrate the exit aperture of the nozzle in order to clean any debris that may have accumulated therein. The diaphragm moves in from a closed position to an open position depending on the incoming water pressure.

Abstract: A self-cleaning sprinkler is disclosed, generally comprised of an upper and lower housing, which encase a nozzle and a diaphragm. The diaphragm moves in an upward and downward position relative to the nozzle, which allows water located within a chamber to be expelled out of an exit aperture of the nozzle. A needle is secured within the diaphragm to correspondingly move in an upward and downward position, such that once in a closed position, the needle will penetrate the exit aperture of the nozzle in order to clean any debris that may have accumulated therein. The diaphragm moves in from a closed position to an open position depending on the incoming water pressure.

Abstract: There is described a cartridge mounting for locating a cartridge in a printer adjacent a print drum for receiving a charge image from the cartridge. The cartridge includes a spine and has a longitudinal axis substantially parallel to the axis of rotation of the print drum and an inner face adjacent the image receiving portion of the drum surface. The mounting has provision for locating the cartridge radially in relation to the axis of rotation of the drum and for biasing the cartridge towards the drum surface. Further provision is made for locating the cartridge tangentially in opposition to the direction of travel of the drum surface. Spacers extend from the inner face of the cartridge to abut the drum surface at a sliding contact, thus spacing the cartridge a predetermined distance from the surface.