Global Patent Index - EP 0429657 A4

EP 0429657 A4 19930120 - IMAGE FORMING APPARATUS

Title (en)

IMAGE FORMING APPARATUS

Publication

EP 0429657 A4 19930120 (EN)

Application

EP 90907452 A 19900516

Priority

  • JP 9000619 W 19900516
  • JP 12719789 A 19890519

Abstract (en)

[origin: WO9014618A1] 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.

IPC 1-7

G03G 15/00; F16H 1/26; F16H 1/14

IPC 8 full level

G03G 15/08 (2006.01); G03G 21/16 (2006.01)

CPC (source: EP)

G03G 15/0896 (2013.01); G03G 21/1647 (2013.01); G03G 2221/1654 (2013.01); G03G 2221/1657 (2013.01); G03G 2221/18 (2013.01)

Citation (search report)

  • [A] PATENT ABSTRACTS OF JAPAN vol. 8, no. 202 (P-300)14 September 1984 & JP-A-59 087 464 ( CANON K.K. )
  • [A] PATENT ABSTRACTS OF JAPAN vol. 13, no. 188 (P-866)8 May 1989 & JP-A-01 015 765 ( CANON K.K. )
  • [AD] PATENT ABSTRACTS OF JAPAN vol. 13, no. 324 (P-903)21 July 1989 & JP-A-01 092 776 ( FUJITSU ) 12 April 1989
  • [A] PATENT ABSTRACTS OF JAPAN vol. 8, no. 16 (M-270)24 January 1984 & JP-A-58 178 038 ( MITSUI ZOSEN )
  • See references of WO 9014618A1

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

WO 9014618 A1 19901129; CA 2028150 A1 19901120; CA 2028150 C 19971202; DE 69016751 D1 19950323; DE 69016751 T2 19950614; EP 0429657 A1 19910605; EP 0429657 A4 19930120; EP 0429657 B1 19950208

DOCDB simple family (application)

JP 9000619 W 19900516; CA 2028150 A 19900516; DE 69016751 T 19900516; EP 90907452 A 19900516