Abstract: A recorder segment electrode assembly is pivotably mounted to an access cover of an electrographic recorder in such a manner that the segment electrode assembly is in a first protected and inoperative position when the cover is open. When the cover is closed, the segment electrode assembly is caused to pivot to a second extended and operative position in contact with recording paper.

Abstract: A recording medium drive roller and a wrap roller are mounted to a cover for an electrographic printer and cooperate to enable the recording medium to be easily loaded into the printer when the cover is open, and to provide proper tension to the paper when the cover is closed to permit uniform and aligned feeding of the recording medium from the source during operation of the printer.

Abstract: A clamping assembly for an array of segment electrodes for use in electrographic printers and the like, includes a compressible and electrically non-conductive material disposed between the segment electrodes and a clamping member. The individual segment electrodes are accurately disposed relative to each other and to the printer when a clamping force exerted on the clamping member squeezes the compressible material to extrude it into openings between each individual segment electrode to thereby electrically insulate each from the other and to preset their positional relationship.

Abstract: An electrographic printer employs a constant-force spring to provide a positive means of preventing slack from occurring in the distributed segment of recording material existing between the source and a drive roller powered by a stepper motor. Further, the constant-force spring prevents backlash and, in cooperation with holding devices, skewing from occurring in the distributed segment of recording material.