Abstract: Apparatus for electrostatically transferring a transferable image of electroscopic marking particles from an image-carrying member to a receiver member. The apparatus comprises an electrically conductive member, such as a roller, selectively coupled to a source of electrical image-transferring potential. Such conductive member is adapted to have a receiver member attached to its surface, and includes a mechanism for registering an image-carrying member relative to an attached receiver member. A compliant member, such as a back-up roller having a resilient deformable peripheral surface, engages the conductive member to define an extended nip. An image-carrying member is guided into engagement with the registration mechanism of the conductive member and then through the nip, where a transferable image on such image-carrying member is transferred to such attached receiver member when image-transferring potential is coupled to the conductive member.

Abstract: A mechanism for prepositioning the input shaft of a bidirectional Geneva drive to effect incremental rotation of the output shaft of the Geneva drive, upon rotation of the input shaft, at a predictable time. The Geneva drive has an input shaft rotatable in opposite directions through active angles which respectively effect rotation of the output shaft. The prepositioning mechanism comprises a member, coupled to the input shaft, and having a pair of spaced, oppositely directed abutment surfaces. A locating pawl is selectively moved to a position to be engaged by one abutment surface when the input shaft is rotated in one direction and the other abutment surface when the input shaft is rotated in the opposite direction to angularly preposition the input shaft at a location from which rotation of such input shaft one of through its respective active angles is accurately predictable.

Abstract: Apparatus for decelerating a sheet moving at a predetermined linear speed along a travel path. The apparatus, located in juxtaposition with the sheet travel path, engages a sheet traveling along such path to apply a deceleration force to such sheet. The deceleration force imparted to such sheet is progressively increased to gradually slow the linear speed of such sheet from the predetermined linear speed to a lesser linear speed.

Abstract: For use in an electrographic copier having a track assembly with multiple tracks defining a path associated with the copier process stations through which discrete image carrier sheets are moved to form developed images on such sheets, apparatus for mounting such sheets for movement along selected tracks of such track assembly. Supports, such as rigid rectangular frames, hold discrete image carrier sheets respectively in a substantially planar condition. The sheet supports include mechanisms for engaging selected tracks of the track assembly. The mechanisms movably mount supported sheets, when moving along a portion of the track assembly path, in the same plane relative to that portion of the path regardless of the selected track with which they are engaged.

Abstract: In an electrographic copier forming related transferable images at spaced locations on an image-carrier and transferring such images seriatim to a receiver member by actuation of a movable transfer mechanism, an improvement for registering such related images in accurate superposition on such member. The image-carrier, moving along a path, is stopped in such path to position one transferable image at a predetermined location. The receiver member is clamped to the means for stopping the image-carrier. During movement of the transfer mechanism, the clamped receiver member is positioned in transfer relation with the transferable image on the stopped image-carrier, and the mechanism is actuated to transfer such image to the member. Following transfer, the receiver member is removed from such transfer relation while keeping such member clamped to the stopping means so that the image carrier can be stopped to position another related transferable image at such predetermined location.

Abstract: A power generator utilizing the full volumetric expansion of water upon its change from the liquid phase to the solid phase (ice). The generator includes a chamber having heat transmitting, fluid impervious, flexible walls. The chamber is filled with water. A pressure-containing housing has an internal cavity in which the chamber is located in spaced relation to the housing. The space between the housing and the flexible walls of the chamber is filled with a fluid which is circulated through the cavity. A conduit connected to the housing provides flow communication between the cavity and means for utilizing moving fluid, such as a fluid driven motor. The phase of the water in the chamber is changed from liquid to solid so that the water expands in volume. Expansion of the water expands the flexible walls of the chamber to displace a proportional amount of fluid from the housing through the conduit, the moving displaced fluid serving as a power medium to drive the motor to do work.