Abstract: A bending resistant part of an endless multilayer fabric for densifying paper materials is placed on a trimming part; to thereby prevent cutting of a fabric at the trimming part. Also oblique movement and dropping off a guide protrusion is prevented. Particularly, a bending resistant part is formed by filling a polyurethane resin in internal structure of an endless fabric of trimming part of the width direction of the fabric woven with arranging at least three layers of weft. A guide protrusion molded from similar polyurethane is arranged on the bending resistant part by fusion. Cutting caused by bending and wearing of the fabric near the guide protrusion is prevented.

Abstract: A multilayered ceramic electromagnetic coupler apparatus includes coils formed on ceramic substrates. The coils are laminated and have insulting layers between the ceramic substrates, a modulator section having an oscillator and a demodulator for outputting a transmitted signal.

Abstract: A modem system includes an RS232C interface; a modulator/demodulator; an input-output device having a parallel interface connected with a data terminal unit having no communication function or having a parallel specification; a parallel-to-serial converter for performing the mutual conversion between parallel data and serial data; a memory for temporally storing the transmitted or recieved data; and a controller for controlling the transmission and reception of data. The modem system can perform the convertion between RS232C specification data and centronix specification data such that a parallel specification printer or plotter having no communication function can be used as an output device for data transmitted to the modem system through the telephone network.