Image forming apparatus including photosensitive body fixing apparatus
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G03G-021/16
G03G-015/00
출원번호
US-0282616
(2005-11-21)
등록번호
US-7409176
(2008-08-05)
우선권정보
KR-10-2004-0095905(2004-11-22)
발명자
/ 주소
Choi,Dong ha
Yang,Myung woo
출원인 / 주소
Samsung Electronics Co., Ltd.
대리인 / 주소
Stein, McEwen & Bui, LLP
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
An image forming apparatus including a photosensitive bodies fixing unit. The image forming apparatus includes: a main body frame; a fixing frame on which a plurality of photosensitive bodies are installed, the fixing frame being fixed at a predetermined position on the main body frame; a guide prot
An image forming apparatus including a photosensitive bodies fixing unit. The image forming apparatus includes: a main body frame; a fixing frame on which a plurality of photosensitive bodies are installed, the fixing frame being fixed at a predetermined position on the main body frame; a guide protruding portion formed on the fixing frame to guide the fixing frame to be coupled with the main body frame; a guide rail formed on the main body frame for the guide protruding portion to be inserted into; and a position determining portion formed on the guide rail to fix the guide protruding portion to a predetermined position. Accordingly, the parallel alignment between the scanning units and the photosensitive bodies may be relatively easily maintained and accurate color overlapping and color presentation are obtained to achieve high image quality. Further, the fixing frame may be fixed at a predetermined position by adjusting the tolerance of a part of the position determining portion, and the transfer unit may be integrated with the fixing frame and fixed at a predetermined position on the main body frame.
대표청구항▼
What is claimed is: 1. An image forming apparatus comprising: a main body; a fixing frame, in which a plurality of photosensitive bodies are installed, the fixing frame being inserted into and/or removed from a fixed position in the main body; main and auxiliary guide protruding portions formed on
What is claimed is: 1. An image forming apparatus comprising: a main body; a fixing frame, in which a plurality of photosensitive bodies are installed, the fixing frame being inserted into and/or removed from a fixed position in the main body; main and auxiliary guide protruding portions formed on the fixing frame to guide the fixing frame as the fixing frame is inserted into and/or removed from the main body; a guide rail, formed in the main body, to receive the guide protruding portions; and main and auxiliary position determining portions, formed at an end of the guide rail and along a first side of the guide rail, respectively, to correspond to positions of the guide protruding portions, the main guide protruding portion being fixed at the main position determining portion and the auxiliary guide protruding portion being biased against a second side of the guide rail at the auxiliary position determining portion, wherein an outer diameter of the auxiliary guide protruding portion is greater than an outer diameter of the main guide protruding portion. 2. The image forming apparatus of claim 1, further comprising: a locking member which locks the guide protruding portions in the position determining portions. 3. The image forming apparatus of claim 2, wherein the main guide protruding portion is located at a first location of the fixing frame and the auxiliary guide protruding portion is located at a second location of the fixing frame which is disposed a predetermined distance from the first location. 4. The image forming apparatus of claim 3, wherein the main guide protruding portion is supported at multiple contact points at the main position determining portion when the fixing frame is inserted into the main body and the auxiliary guide protruding portion is supported at one contact point at the auxiliary position determining portion when the fixing frame is inserted into the main body. 5. The image forming apparatus of claim 4, wherein the auxiliary guide protruding portion has a cylindrical shape, and the auxiliary position determining portion includes a surface to contact and support the auxiliary guide protruding portion at one contact point. 6. The image forming apparatus of claim 4, wherein the locking member is an elastic member that applies pressure to the auxiliary guide protruding portion toward the main position determining portion and the auxiliary position determining portion. 7. The image forming apparatus of claim 4, wherein the image forming apparatus is a two-pass image forming apparatus in which two photosensitive bodies are installed on the fixing frame. 8. The image forming apparatus of claim 1, further comprising: a transfer unit which transfers a toner image developed on the photosensitive bodies, wherein the transfer unit is coupled with the fixing frame and fixed at a predetermined position in the main body frame. 9. The image forming apparatus of claim 8, wherein one end of the transfer unit is rotatably connected to a C-shaped connection groove formed on one end of the fixing frame or separated from an opening portion of the C-shaped connection groove. 10. The image forming apparatus of claim 8, wherein the image forming apparatus is a two-pass image forming apparatus in which two photosensitive bodies are installed on the fixing frame. 11. The apparatus according to claim 1, wherein the guide rail comprises: a first end which extends vertically and which is open to the upper side of the main body; and a second end which is inwardly tapered. 12. The apparatus according to claim 11, wherein the guide rail further comprises a locking member to fix the auxiliary guide protruding portion against the second side the guide rail. 13. The image forming apparatus of claim 1, wherein the guide protruding portions are centered about rotation axes of the photosensitive bodies, respectively, on both sides of the fixing frame. 14. The apparatus according to claim 1, wherein the outer diameter of the auxiliary guide protruding portion is greater than a width of the end of the guide rail. 15. An image forming apparatus comprising: a main body; a fixing frame, in which a plurality of photosensitive bodies are installed, the fixing frame being removably inserted into the main body; a guide protruding portion formed on the fixing frame to guide the fixing frame to be coupled with the main body; a guide rail, formed in the main body, to receive the guide protruding portion; a position determining portion formed on the guide rail to fix the guide protruding portion, including a main position determining portion that supports the main guide protruding portion at multiple contact points and an auxiliary position determining portion that supports the auxiliary guide protruding portion at one contact point; and a locking member which locks the guide protruding portion to the position determining portion, wherein the guide protruding portion comprises a main guide protruding portion, at a first location of the fixing frame, and an auxiliary guide protruding portion, at a second location of the fixing frame which is disposed a predetermined distance from the first location, and wherein the main guide protruding portion has a cylindrical shape, and the main position determining portion includes both sides of the guide rail and V-shaped surfaces at one end of the guide rail to support the main guide protruding portion at four contact points. 16. An image forming apparatus comprising: a main body; a fixing frame, in which a plurality of photosensitive bodies are installed, the fixing frame being removably inserted into the main body; a guide protruding portion formed on the fixing frame to guide the fixing frame to be coupled with the main body; a guide rail, formed in the main body, to receive the guide protruding portion; a position determining portion formed on the guide rail to fix the guide protruding portion, including a main position determining portion that supports the main guide protruding portion at multiple contact points and an auxiliary position determining portion that supports the auxiliary guide protruding portion at one contact point; and a locking member which locks the guide protruding portion to the position determining portion, wherein the guide protruding portion comprises a main guide protruding portion, at a first location of the fixing frame, and an auxiliary guide protruding portion, at a second location of the fixing frame which is disposed a predetermined distance from the first location, wherein the locking member is an elastic member that applies pressure to the auxiliary guide protruding portion toward the main position determining portion and the auxiliary position determining portion, and wherein an outer diameter of the main guide protruding portion is smaller than the outer diameter of the auxiliary guide protruding portion such that the main guide protruding portion passes relatively easily through a gap between the auxiliary guide protruding portion and the locking member.
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