Abstract: A method for unlocking a door on a cartridge for a dry electrophotographic apparatus includes inserting the cartridge into the electrophotographic apparatus; unlocking a first locking mechanism on the door with a first key mechanism on the electrophotographic apparatus when the cartridge is fully inserted into the electrophotographic apparatus; and unlocking a second locking mechanism on the door with a second key mechanism on the electrophotographic apparatus when the cartridge is fully inserted into the electrophotographic apparatus.

Abstract: Apparatus for precisely positioning one or more of the workstations of a document printer/copier relative to an internal drum, including a first member, attached to either a workstation or the internal drum, having two sections, each section having a reference surface forming an angle therebetween, an actuator for changing the included angle between the first reference surface and second reference surface, thus enabling the included angle to be increased or decreased, and a second member having a reference surface that mates with the pair of reference surfaces, associated with the other of the workstation or the internal drum, so as to accurately adjust the workstation relative to the internal drum dependent upon the included angle of the first reference surface and second reference surface.

Abstract: A protective sleeve of a coupling for drivingly connecting a first shaft and a second shaft. The coupling includes a central disk capable of sliding relative to the first shaft and the second shaft so as to provide a uniform output speed even when the first shaft and second shaft are misaligned. The protective sleeve extends between, and is in sealing relation with, the first shaft and the second shaft, and encapsulates the central disk to shield the central disk from contamination. The protective sleeve is formed of a flexible material, such as polyurethane, to accommodate any misalignment between the first shaft and the second shaft.

Abstract: Apparatus for precisely positioning one or more of the work stations of a document printer/copier relative to an internal drum, including a first member, attached to either a work station or the internal drum, having two sections, each section having a reference surface forming an angle therebetween, an actuator for changing the included angle between the first reference surface and second reference surface, thus enabling the included angle to be increased or decreased, and a second member having a reference surface that mates with the pair of reference surfaces, associated with the other of the work station or the internal drum, so as to accurately adjust the work station relative to the internal drum dependent upon the included angle of the first reference surface and second reference surface.