A power supply is configured to accept battery and external power sources, and is adapted for use in equipment in a broadband communications network. The cationic surfactant aids in reducing the viscosity of the dispersion and preferred cationic surfactants are volatile in coating or film casting operations involving drying and sintering of the dispersion. Each virtual channel can service at least a portion of the network traffic generated using a remote-display protocol. A head section forms an image based on the print data in the band buffer under the control of a head control section. The lower electrode and the upper electrode are constructed to be separated from each other by a predetermined interval and to be engaged with each other using a series of alternating ridges so that an effective surface area can increase within a limited area. The frictional gripping member may also contain an arcuate inner surface for pivotal movement and contact with respect to a roll of paper sheet segments.