WEB CONVEYING DEVICE, IMAGE FORMING APPARATUS, AND CONVEYING ROLLER CAPABLE OF EFFICIENTLY SUCKING AIR THAT ENTERS BETWEEN WEB AND CONVEYING ROLLER

VACUUM TREATMENT APPARATUS AND VACUUM TREATMENT METHOD

Sheet detection circuit using electrical elements contacting conductive vacuum belt

Vacuum communication apparatus and methods

Vacuum commutation apparatus and methods

Thermal roller and producing process

Suction or blow thermal roller

Web processing roll having directional vacuum ports

Single-fold interfolding machine with ability to produce off-folded towel or tissue products