Abstract: An equipment cabinet employs a rack-mountable equipment enclosure surrounded by a base, a cap, and front and rear covers. Each cover consists of a bezel and a door reversibly mounted thereon via removable hinge pins. The bezels have sidewalls that rest against ledges on the edges of the enclosure to receive support therefrom. The door has a centrally-located latch, the latch having a pawl with an eccentric catch portion that engages a latch opening on a ledge extending from the bezel. The pawl also has a tab that rests between the ends of an arcuate raised portion on the rear of the door to limit the rotational travel of the pawl. The base, cap, and covers are configured so that the enclosure is surrounded by hollows forming a peripheral passageway for cabling and the like. The base and cap have front and rear handle-like projections through which cables may be routed, and the covers have inward-facing snap tabs that engage the handle-like projections to secure the covers to the base and cap.

Abstract: An equipment cabinet employs a rack-mountable equipment enclosure surrounded by a base, a cap, and front and rear covers. Each cover consists of a bezel and a door reversibly mounted thereon via removable hinge pins. The bezels have sidewalls that rest against ledges on the edges of the enclosure to receive support therefrom. The door has a centrally-located latch, the latch having a pawl with an eccentric catch portion that engages a latch opening on a ledge extending from the bezel. The pawl also has a tab that rests between the ends of an arcuate raised portion on the rear of the door to limit the rotational travel of the pawl.

Abstract: An apparatus and method are disclosed for testing the faces of a polygon mirror for angular inclination and flatness while the polygon mirror is rotating at its intended operating speed. The apparatus includes an autocollimator for making the test readings, a strobe light for supplying light in the form of pulses to the autocollimator and a control mechanism including a laser, a light detector, a counter and a momentary contact switch for controlling the timing of the light pulses emitted by the strobe light so that the faces of the polygon mirror can be tested, one face at a time. The apparatus further includes a fiber optic probe which illuminates a unique number imprinted on the face illuminated through the autocollimator with light pulses directly from the strobe light so that the face that is being illuminated can be identified.

Abstract: A laser recording system is disclosed in which a beam of light from a laser is split into first and second beams. The first beam is modulated with digital signals from a computer and deflected by a rotating mirror onto the surface of a photoconductive drum. The second beam is deflected by the rotating mirror onto a curved timing plate. The surface of the timing plate is provided with a series of unevenly spaced reflective markings representative of evenly spaced spot positions on the surface of the drum. Light reflected by the timing plate as the second beam scans its surface and strikes the reflective markings impinges on a photodetector located at the center of curvature of the timing plate and is converted by the photodetector into a corresponding series of electrical signals.

Abstract: A scanning system and method for reading coded indicia carried on containers, etc., the system and method including means for generating in a predetermined sequence a first light pattern, and a second light pattern, and means for focusing same at a window over which containers carrying the coded indicia are positioned. The disclosure also includes a mirrored rotatable polygon structure including a plurality of mirrors, some of which are inclined at a positive angle and the others which are positioned at a negative angle with respect to the polygon axis of rotation as well as means for adjusting the incline of the mirrors.

Abstract: A scanning system and method for reading coded indicia carried on containers, etc., the system and method including means for generating in a predetermined sequence a first light pattern, and a second light pattern, and means for focusing same at a window over which containers carrying the coded indicia are positioned. The disclosure also includes a mirrored rotatable polygon structure including a plurality of mirrors, some of which are inclined at a positive angle and the others which are positioned at a negative angle with respect to the polygon axis of rotation as well as means for adjusting the incline of the mirrors.