Konishiroku Photo Industry Co., Ltd.

Tohru Uchida

Akira Kato

Akira Itoh

Nin-ichi Kamogawa

Tatsuo Yajima

Yutaka Seto

Yutaka Yamada

Shigehiro Suzuki

A paper feeding device used for feeding stacked paper to an electrophotographic copying machine is provided with a lift for a stack of papers, which move the top sheet against a swingably supported feeding roller as the size of the stack decreases under use. Forwardly of the feeding roller in the direction of travel of the paper is a plate in frictional contact with the roller, the paper being thus fed forwardly to the copying machine through the nip between the roller and plate. This arrangement avoids the problem of a multifeed of the sheets. The feeding-out operation may be further improved by the provision of separating claws engaging the leading corners of the paper as it passes from the feeding roller. Raising of the lift is controlled by a detecting device actuated by position of the swingable support for the feeding roller.

Paper feeding device for recording apparatus

An apparatus for collecting scattering magnetic toner includes an air flow path, a toner collecting chamber at one end of the flow path, a suction device for generating a directional flow of air for transporting scattering toner through the air flow path to the toner collecting chamber, and magnets in the collecting chamber for facilitating collection of toner therein. A filter formed of magnetizable material may be further provided in the magnetic field within the collecting chamber for enhancing the collection capacity and efficiency of the apparatus.

Collecting apparatus for scattering toner

A photosensitive material for electrophotography which comprises a conductive support and two or more superimposed photosensitive layers where each layer comprises photoconductive powder and a binder, the particle size of the photoconductive powder in an upper layer being greater than that in a lower layer. Both high photosensitivity and high resistance to electrical impact are imparted to the photosensitive material.

Photosensitive material for electrophotography having photosensitive

A photosensitive material of the binder type for electrophotography having a photosensitive layer of the material comprising a silicon oil having a viscosity of at least 6000 cs when measured at 25.degree. C.

Photosensitive material for electrophotography comprising a silicon oil

A photosensitive material for electrophotography which comprises a conductive support and two or more superimposed photosensitive layers where each layer comprises photoconductive power and a binder, the particle size of the photoconductive powder in an upper layer being greater than that in a lower layer. Both high photosensitivity and high resistance to electrical impact are imparted to the photosensitive material.

Method and apparatus for enhancing charge retention of a photosensitive layer wherein an ion wind is created and applied to the photosensitive material prior to its reuse. The apparatus preferably comprises a corona charging unit having an opening and directing means adjacent the opening for directing the flow of ions created during corona charging into an uncharged portion of the photosensitive layer.

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Hachioji, Japan

Tohru Uchida