Papierzuführwalze und Papierzuführvorrichtung

Details

Veröffentlichungs-Nr.

EP4789993

Anmeldetag

4. Februar 2025

Veröffentlichung

21. August 2025

Rechtsraum

EP

IPC

B65H5/06, B65H3/06

Abstract

Provided are a paper feed roll improved in durability by maintenance of the frictional coefficient of the roll surface even in long-term use, and a paper feeding device. Provided is a paper feed roll 12 comprising a shaft body 12a and an elastic body layer 12b formed on the outer peripheral surface of the shaft body 12a, the elastic body layer 12b being constituted from a rubber composition including urethane rubber, surface unevenness is formed by a plurality of projections on the outer peripheral surface of the elastic body layer 12b, the surface roughness Rz of the outer peripheral surface of the elastic body layer 12b being 30-280 µm, and the profile height of the projections when the surfaces of the projections are observed by microscope after feedthrough of 30,000 sheets of paper in a feedthrough test under the conditions below being 2.0-10 µm. Also provided is a paper feeding device 10 in which a paper feed roll is one or both of a paper delivery roll and a separation roll. Environment: 10°C × 10% RH; printer: load of 400 g and paper passthrough speed of 300 mm/sec

Anmelder

Firma

Sumitomo Riko Company Limited

Land

🇯🇵 Japan

Fachgebiete