Abstract: A new and distinct variety of apricot tree is disclosed and which is mature for harvesting and shipment under the ecological conditions prevailing in Eastern Washington, about July 18th.

Abstract: Apparatus for imaging a lithographic printing plate wherein structure is provided for removing debris generated by an imaging head and adhering to the plate. The debris removing structure may comprise a rotating brush which is selectively movable into and out of contact with the plate as necessary. Cleaning fluid may be delivered to the brush and suction may be used to aid removal of debris loosened by the brush.

Abstract: An imaging head for use in a spark-discharge recording apparatus, including a tracking system for monitoring and maintaining the head a fixed distance away from the surface of a recording blank. The tracking system preferably measures the distance between the head and the surface of the blank using a gas source oriented toward the blank's surface and a pressure sensor for measuring the pressure of the gas reflected therefrom. The signal produced by the pressure sensor indicates the size of the gap. The pressue sensor is coupled to a servo system that alters the position of the head to maintain a preselected gap distance.

Abstract: A pitch-and-roll adjustment mechanism for use in conjunction with a spark-discharge writing head. The mechanism provides structure for adjusting the physical position of the writing head with respect to a recording medium, and includes a flexure plate capable of flexing through a limited arc in two axes without permanent deformation.

Abstract: A new and distinct of apricot tree is disclosed and which is mature for harvesting and shipment under the ecological conditions prevailing in Eastern Washington, about July 18th.