Apparatus and method for recording using an electrographic writer and an imaging web

An electrographic recording method comprising:

• moving a primary image forming member (PIFM) in a process direction;
• rotating an electrographic writehead having plural rows of spaced electrodes, each respective row of spaced electrodes being rotated, in turn, so as to be positioned transverse of the process direction and opposite a development nap,
• selectively activating the selected electrodes in a respective row to establish respective electrical fields for recording of a respective row of pixels on the PIFM, the writehead facing a first surface of the PIFM and positioned in contact with or closely adjacent the first surface to establish the respective electrical fields through the PIFM;
• providing a development station including the nap of electrically charged toner particles;
• selectively depositing the particles on a second surface of the PIFM directly opposite the series of spaced electrodes by electrostatically selectively attracting the toner particles by the respective electrical fields to develop the respective pixels to form a toner image on a second surface of the PIFM, the second surface being opposite the first surface;
• and
• wherein the PIFM moves relative to the writehead.

A color electrographic recording method comprising:

• providing a plural number of color separation image forming modules, each module including a primary image forming member (PIFM) and a rotatable electrographic writehead and a development station;
• in each module forming a respective color separation image on the PIFM by operating the respective writer to establish selective recording electrical fields across a process direction while moving the PIFM in the process direction past a development station having a nap of electrically charged toner particles of the respective color, the nap being presented to one surface of the PIFM while the recording electrical fields are established through the PIFM with the writehead rotating so as to selectively position respective rows of electrodes adjacent a second surface of the PIFM and directly opposite the nap;
• and
• moving a receiver sheet into contact with a PIFM of each module to transfer respective color separation images in registration to form a multicolor image on the receiver sheet, wherein colors other than that of the respective toner particles are formed by superposition of toner particles of different colors.