The new fabric according to the present invention provides a great advance over conventional tent fabrics of both the types discussed above and others. The reactor satisfies the relations \xb7D\u2032\u2266D<D\u2032, and 0. Thus, the identification code is read, and the whole surface of the sheet is read by a scanner, whereupon the read results are transmitted to an order processing apparatus. The higher doped part of the adjacent transistor region is sufficiently thick as to prevent any minority charge carriers injected by the diode junction from reaching the p-n junction with the base region.