Abstract: The present invention discloses a storage library subsystem which utilizes robotic arm mechanisms to move storage media cartridges between inventory storage locations and read/write devices. This library subsystem simplifies the motion required of the robotic arms to reduce the complexity of the robotic mechanisms and thereby reduce the complexity, size and cost of the library subsystem. One factor in simplifying the robotic motion is the use of higher density storage media cartridges. Higher density cartridges enables a corresponding reduction in the total number of media cartridges inventoried and the total range of motion required of the robotic arm. Another factor in simplifying the robotic motion is the placement of media cartridges in vertically aligned columns around the circumference of a rotating cylindrical carousel. The carousel may be rotated to vertically align a column of storage media cartridges with a read/write device below in the same vertical plane.

Abstract: This magnetic ink character recognition (MICR) character coating system makes use of the application of an inexpensive lubricant that is selectively applied to the document, solely in the area where the MICR characters are printed. The lubricant of choice used in this apparatus is sodium stearate (soap). The lubricating apparatus includes a pair of rollers, between which the printed documents are fed. One of the rollers is a drive roller that advances the documents. Opposite of and spring loaded against the drive roller is a free running lubricating roller that is manufactured from a solid lubricant, which lubricating roller is of length equal to the length of the MICR character field that is printed on the document. In the printing of the document, a sensor mark is printed on the document and is used to indicate the beginning of the MICR character field.

Abstract: A moving exposure system is provided having a semiconductor light source, which may be incorporated in a module with modulating electronics, and disposed on a moveable platform for exposing a special surface to light rays. The moving exposure system can be optically coupled to a printer's photoconductive element by means of a flat field correction device such as a lens or a fiber optic bundle, in the case of rotating motion of the light source, which maximizes the area exposed while minimizing the bulk of the exposure apparatus.