[특허]Driving force transmission mechanism, image forming apparatus equipped with such a mechanism, and process unit of such an apparatus

[미국특허] Driving force transmission mechanism, image forming apparatus equipped with such a mechanism, and process unit of such an apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G03G-015/00
출원번호	US-0964784 (2004-10-15)
우선권정보	JP-2000-320945(2000-10-20); JP-2000-333198(2000-10-31); JP-2000-342354(2000-11-09)
발명자 / 주소	Yasumoto,Takeshi Ono,Akio Numagami,Atsushi Fujiwara,Yukihiro Murayama,Kazunari Hoashi,Shigeru Ueno,Takahito
출원인 / 주소	Canon Kabushiki Kaisha
대리인 / 주소	Fitzpatrick, Cella, Harper &
인용정보	피인용 횟수 : 80 인용 특허 : 30

초록 ▼

A drive transmission apparatus includes a first coupling portion having a polygonal shape; a second coupling portion having a hole portion which has a cross-sectional configuration larger than the first coupling portion, the hole portion being engageable with the first coupling portion; and a center shaft provided on the first coupling or the second coupling, the center shaft penetrating the other one of the first and second coupling.

대표청구항 ▼

The invention claimed is: 1. An image forming apparatus for forming an image on a recording material comprising: an image bearing member detachably mountable to the image forming apparatus; a driving source; coupling means for transmitting a driving force from said driving source; to said image bearing member, said coupling means comprising a rotatable first coupling portion including a coupling projection having a polygonal cross-section, and a rotatable second coupling portion, including a twisted hole having a cross-section larger than the cross-section of said coupling protection, for coupling engagement with said first coupling portion, wherein at least one of said first coupling portion and said second coupling portion is mounted to said image bearing member; a shaft provided on said first coupling portion and extending from an end surface of said first coupling portion in a direction in which said first coupling portion and said second coupling portion are coupleable with each other; and an engageable hole, provided in said second coupling portion for engagement with said shaft, for determining a positional relation between said first coupling portion and said second coupling portion. 2. An apparatus according to claim 1, wherein the position of said image bearing member in the image forming apparatus is determined by engagement of said shaft with said engageable hole. 3. An apparatus according to claim 1, wherein said shaft is coaxial with the coupling projection, wherein said engageable hole is coaxial with the twisted hole. 4. An apparatus according to claim 1, wherein engagement play between said shaft and said engageable hole is smaller than engagement play between said polygonal projection and said twisted hole. 5. An apparatus according to claim 1, wherein a free end portion of said shaft is tapered. 6. An apparatus according to claim 1, wherein said shaft is an extended part of a rotation shaft. 7. An apparatus according to claim 1, wherein said polygonal projection is twisted at the same rate as said twisted hole. 8. An image forming apparatus for forming an image on a recording material comprising: an image forming unit detachably mountable to said image forming apparatus and including a rotatable member for image formation; a driving source; coupling means for transmitting a driving force from said driving source to said rotatable member, said coupling means comprising a first rotatable coupling portion including a coupling projection having a polygonal cross-section, and a second rotatable coupling portion, including a twisted hole having a cross-section larger than the cross-section of said coupling projection, for coupling engagement with said first coupling portion, wherein at least one of said first coupling portion and said second coupling portion is mounted to said rotatable member; a shaft provided on said first coupling portion and extending from an end surface of said first coupling portion in a direction in which said first coupling portion and said second coupling portion are coupleable with each other; and an engageable hole, provided in said second coupling portion for engagement with said shaft, for determining a positional relation between first coupling portion and said second coupling portion. 9. An apparatus according to claim 8, wherein the position of said rotatable member in said image forming apparatus is determined by engagement of said shaft with said engageable hole. 10. An apparatus according to claim 9, wherein engagement play between said shaft and said engageable hole is smaller than engagement play between said polygonal projection and said twisted hole. 11. An apparatus according to claim 9, wherein a free end portion of said shaft is tapered. 12. An apparatus according to claim 9, wherein said shaft is an extended part of a rotation shaft. 13. An apparatus according to claim 9, wherein said polygonal projection is twisted at the same rate as said twisted hole. 14. An apparatus according to claim 8, wherein said shaft is coaxial with the coupling projection and wherein said engageable hole is coaxial with the twisted hole.

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활용도 Top5 특허

해당 특허가 속한 카테고리에서 활용도가 높은 상위 5개 콘텐츠를 보여줍니다.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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[미국특허] Driving force transmission mechanism, image forming apparatus equipped with such a mechanism, and process unit of such an apparatus 원문보기

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[미국특허] Driving force transmission mechanism, image forming apparatus equipped with such a mechanism, and process unit of such an apparatus 원문보기

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