A method of and system for managing cached data across disparate systems is disclosed. The method includes creating, within a lithographic subfield, subsequent-layer features which are intentionally offset from their respective previous-layer features, where the intentional offset may vary in magnitude and direction from one subfield to the next. A voltage applying section alternately applies, to the developer bearing body, a first voltage for making the developer move from the developer bearing body toward the image bearing body in order to develop the latent image, and a second voltage for making the developer move from the image bearing body toward the developer bearing body. The pump also has a cover connectable to the housing. For instance, the first list of fields may include only the fields that are in the layout.