Abstract: Methods and systems are presented for detecting partial electrical discharges in a printing machine and for determining the source of the discharge events by detecting radio frequency signals using an antenna located near high voltage components of the printing system and determining whether a partial electrical discharge has occurred based on the detected signals. One or more of the high voltage components are then selectively enabled alone or in groups to isolate the source of the partial electrical discharge to expedite identification of suspect components and facilitate repair and system maintenance.

Abstract: Process for preparing durable, re-usable intermediate toner image-transfer belts or electrostatic transfuse belts. The present belts have a continuous elastomer-impregnated fibrous fabric support and at least one outer smooth release layer of a cured elastomer polymer. The invention is characterized by the application of a thin primer layer of a hydrolyzable polyfunctional silicone composition between the elastomer-coated surface of the fabric support and the outer elastomer polymer layer. The polyfunctional silicone chemically-bonds to the elastomer of the fabric support during hydrolysis and chemically-bonds to the outer elastomer layer during its cure, to form a durable, heat-resistant transfuse belt. The layers maybe applied to the fabric support by spray application as dilute solutions.

Abstract: An improved method of upgrading an image transfer engine such as, for example, an ink jet fluid printer or plotter using liquid ink, or a xerographic device using a liquid toner is disclosed. A removable ink flush tank/cartridge containing an ink cleaner is substituted for a removable ink tank, permitting complete cleaning of ink from the ink fluid flow paths in the engine. This results in less contamination of new inks with previously used inks in the engine.

Abstract: A fluid ejecting method and system include one or more fluid ejectors within a fluid ejector frame and an interposer frame and movably mounted upon a fluid ejector carriage. The fluid ejector carriage traverses across a recording medium for placing swaths of fluid droplets upon the recording medium. A biasing structure urges the fluid ejector frame to a first position to obtain highly accurate and repeatable placement of fluid droplets when the fluid ejector frame is in the first position. A second position of the fluid ejector frame is achieved by energizing a position actuator to move the fluid ejector frame from the first position to the second position to obtain highly accurate and repeatable placement of fluid droplets when the fluid ejector frame is in the second position. The recording medium is advanced separately upon completing a set of at least one swath of fluid droplets.