Abstract: In electrostatic recording apparatus of the type in which a toner image is applied to a transfer medium such as paper, the transferred image is fixed as by passing the paper between a heated roller and a pressure roller. The present invention temporarily raises the temperature of the heated roller only during the fixing and copying operation to compensate for the heat loss to the paper and pressure roller. Thus proper fixing of the image is assured with a minimum expenditure of energy.

Abstract: A wrapping device in which two rotating drums (18, 20) of identical circumferential velocities are arranged symmetrically and one of the rotating drums (18) is provided around its circumference with a number of recesses (36) adapted to receive the sheet articles from an open bottom (32) of the hopper (16) in which a number of the sheet articles are stored in superposition whereas the opposite rotating drum (20) is provided around its circumference with a number of receivers (78) which first hold the wrapping paper and then catch the sheet article transmitted from the rotating drum (18), so that the wrapping operation is continuously performed by the synchronous rotation of the wrapping drums (18, 20) with folding of the wrapping paper.