Title:
IMAGE FORMING APPARATUS
Document Type and Number:
WIPO Patent Application WO/1990/014618
Kind Code:
A1
Abstract:
A novel transmission gear mechanism for driving a developing device in an image forming apparatus of such a type that the developing device is brought close to or apart from a photosensitive drum while being interlocked with opening/closing action of a cover. This mechanism is composed of a first bevel gear (71) fitted on a revolving shaft (624) on the side of the photosensitive drum unit connected to the driving motor, a second bevel (72) to constantly mesh with the first bevel gear, a third bevel gear (81) fitted on the revolving shaft (635) on the side of the developing device unit, a fourth bevel gear (82) to constantly mesh with the third bevel gear, and rotative connecting means (91) for connecting the second and fourth bevel gears to each other. The rotative connecting means is provided with a connecting structure to transmit the rotation of the second bevel gear (72) to the fourth bevel gear (82) when the developing device approaches the photosensitive drum and to permit displacement of the fourth bevel gear (82) when the developing device performs the approaching/departing action.
Inventors:
FUJIMOTO TETSUYA (JP)
KISHIMOTO HIROSHI (JP)
NONOMURA TOMOHIRO (JP)
KISHIMOTO HIROSHI (JP)
NONOMURA TOMOHIRO (JP)
Application Number:
PCT/JP1990/000619
Publication Date:
November 29, 1990
Filing Date:
May 16, 1990
Export Citation:
Assignee:
FUJITSU LTD (JP)
International Classes:
G03G15/08; G03G21/16; (IPC1-7): F16H1/14; F16H1/26; G03G15/00; G03G15/101
Foreign References:
| JPS62280866A | 1987-12-05 | |||
| JPH01120458A | 1989-05-12 |
Other References:
See also references of EP 0429657A4
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