Abstract: A media supply for a thermal ink printer, includes a central shaft defining a longitudinal axis, a media hub for supporting a supply of media in a coiled configuration coaxially mounted about the central shaft and adapted for rotational movement thereabout, a hub clamp mounted to the media hub and adapted for axial movement therealong to accommodate media supplies of various lengths and a torsion spring mounted about the central shaft and operatively engageable with the media hub to rotatably bias the media hub to an initial position corresponding to an unstressed condition of the torsion spring in response to movement of the media hub through a predetermined angular sector of rotation in one rotational direction, to thereby maintain a predetermined level of tension on the media. A locking member may be associated with the hub clamp to selectively secure the hub clamp at a predetermined axial position.

Abstract: A print media sensor mounting assembly includes a housing having a sensor mounting element. The sensor mounting element has a sensor position movably mounted therein for movement of the sensor position to a plurality of predetermined positions corresponding to a width of a print media web.

Abstract: Apparatus is disclosed for use in acquiring data from an internal combustion engine so that an analysis may be made as to whether any malfunction exists in the various cylinders. A succession of electrical pulses are provided and which correspond with successive crankshaft positions as the crankshaft of the engine rotates through at least one engine cycle. The time duration between the successive pulses corresponds with the time duration between successive crankshaft positions. A sufficient number of pulses are produced so as to correspond with a plurality of crankshaft positions for each power period, there being as many power periods as the number of cylinders in the engine. Circuitry is provided for responding to the pulses for the purposes of measuring the time interval between successive pulses. Time interval samples are provided having values which correspond with associated measured time intervals. These samples are then utilized to determine the existance of any cylinder malfunctions.