Abstract: A facsimile machine rewritably stores a table for storing basic data for calculating a communication charge needed at the time of sending image data in a non-volatile memory constituting a part of a ROM. A control unit of the facsimile machine calculates a communication charge at the time of sending a facsimile by referring to the table, and displays the communication charge on a display unit. Further, the control unit obtains the latest basic data through a predetermined network, and updates the basic data in the table stored in the non-volatile memory to the obtained latest basic data.

Abstract: A thermal recording head which comprises a plurality of heat-generating resistors; an insulation substrate on which a plurality of separate conductors are mounted to be connected to the heat-generating resistors directly or with diodes interposed therebetween; and a 3-ply conductor holder formed of an insulation sheet, an assembly of common conductors mounted on the insulation sheet at a prescribed interval and an insulation layer deposited on the common conductors with a thickness of 2 to 20 microns, and wherein the insulation layer has openings arranged at a prescribed interval; and the insulation substrate is laminated with the conductor holder with the common conductors connected to the separate conductors.