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Machine translation
1. (WO1979000708) DEVELOPING DEVICE IN AN ELECTRICAL PHOTOCOPYING APPARATUS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000708    International Application No.:    PCT/DE1979/000025
Publication Date: 20.09.1979 International Filing Date: 02.03.1979
IPC:
G03G 15/09 (2006.01)
Applicants:
Inventors:
Priority Data:
2809353 04.03.1978 DE
Title (EN) DEVELOPING DEVICE IN AN ELECTRICAL PHOTOCOPYING APPARATUS
(FR) DISPOSITIF DE DEVELOPPEMENT D"UN APPAREIL DE PHOTOCOPIE ELECTRIQUE
Abstract: front page image
(EN)The developing device of an electrical photocopying apparatus comprises a developing drum (37). This drum is made of a hollow non-magnetic cylinder (29) and of a set of magnets rotatingly mounted inside the hollow cylinder. On the outer conductive surface of hollow cylinder (29) is placed a magnetic brush made of small magnetic particles for development, said particles being transferred from the magnetic brush onto an intermediary image carrier by means of the electrical field from the latent image. The thickness of wall (53) in the part of hollow cylinder (29) adjacent to the intermediary image carrier (1) is reduced, thus allowing a larger scanning surface in order to achieve a uniform production of the development image.
(FR)Le dispositif de developpement d"un appareil de photocopie electrique comprend un tambour de developpement (37). Ce dernier se compose d"un cylindre creux (29) non magnetique et d"un ensemble d"aimants monte mobile en rotation a l"interieur du cylindre creux. Sur la surface exterieure conductrice du cylindre creux (29) est dispose un balai magnetique (43) constitue de petites particules magnetiques de developpement, lesquelles sont transferees du balai magnetique sur un support d"image intermediaire grace au champ electrique provenant de l"image latente. Le cylindre creux (29) possede dans sa partie adjacente au support d"image intermediaire (1) une diminution d"epaisseur de la paroi (53) autorisant une plus grande surface de balayage pour qu"une production uniforme de l"image de developpement soit obtenue.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)