IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0486049
(2006-07-14)
|
등록번호 |
US-7742728
(2010-07-12)
|
우선권정보 |
JP-P2005-358817(2005-12-13) |
발명자
/ 주소 |
- Sato, Masahiro
- Kitamura, Atsuyuki
- Inao, Tsukasa
|
출원인 / 주소 |
|
대리인 / 주소 |
Morgan, Lewis & Bockius LLP
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
7 |
초록
▼
An image forming apparatus includes a belt, plural photosensitive drums that face the belt, plural developing devices that develop plural latent images formed on the plural photosensitive drums using a developing agent, where the developing devices are disposed around the respective photosensitive d
An image forming apparatus includes a belt, plural photosensitive drums that face the belt, plural developing devices that develop plural latent images formed on the plural photosensitive drums using a developing agent, where the developing devices are disposed around the respective photosensitive drums, and plural image forming devices, where each one of the plural image forming devices includes one of the plural photosensitive drums and one of the plural developing devices, and the photosensitive drum of an adjacent one of the plural image forming devices is disposed vertically within a horizontal width of the developing device of one of the plural image forming devices.
대표청구항
▼
What is claimed is: 1. An image forming apparatus comprising: a belt; a plurality of photosensitive drums that face the belt; a plurality of developing devices that develop a plurality of latent images formed on the plurality of photosensitive drums using a developing agent, the developing devices
What is claimed is: 1. An image forming apparatus comprising: a belt; a plurality of photosensitive drums that face the belt; a plurality of developing devices that develop a plurality of latent images formed on the plurality of photosensitive drums using a developing agent, the developing devices being disposed around the respective photosensitive drums; a plurality of image forming devices, each one of the plurality of image forming devices comprising one of the plurality of photosensitive drums and one of the plurality of developing devices, and the photosensitive drum of an adjacent one of the plurality of image forming devices being disposed vertically within a horizontal width of the developing device of one of the plurality of image forming devices; and a plurality of exposing devices that form the plurality of latent images on the plurality of photosensitive drums, the exposing devices being disposed around the respective photosensitive drums, wherein each developing device includes two augers and a developing roll, the two augers stirring the developing agent and feeding the developing agent to the developing roll, the developing roll facing the photosensitive drum corresponding to each developing device, the developing roll being provided at a higher level than the two augers and being separate from the two augers, each one of the plurality of image forming devices comprises one of the plurality of photosensitive drums, one of the plurality of exposing devices, and one of the plurality of developing devices, and an entirety of the photosensitive drum and at least a portion of the exposing device of an adjacent one of the plurality of image forming devices are disposed vertically within the horizontal width of the developing device of one of the plurality of image forming devices. 2. The image forming apparatus according to claim 1 further comprising: a plurality of charging devices that charge the plurality of photosensitive drums, the charging devices being disposed around the respective photosensitive drums, wherein each one of the plurality of image forming devices comprises one of the plurality of photosensitive drums, one of the plurality of charging devices, and one of the plurality of developing devices, and an entirety of the photosensitive drum and at least a portion of the charging device of an adjacent one of the plurality of image forming devices are disposed vertically within the horizontal width of the developing device of one of the plurality of image forming devices. 3. The image forming apparatus according to claim 2, further comprising: a plurality of transfer devices that transfer developed latent images formed on the plurality of photosensitive drums, the transfer devices being disposed on an opposite side of the respective photosensitive drums with respect to the belt, wherein each one of image forming devices comprises one of the plurality of photosensitive drums, one of the plurality of charging devices, one of the plurality of developing devices, and one of the plurality of transfer devices, and an entirety of the photosensitive drum, at least a portion of the charging device, and at least a portion of the transfer device of an adjacent one of the plurality of image forming devices are disposed vertically within a horizontal width of the developing device of one of the plurality of image forming devices. 4. The image forming apparatus according to claim 1, further comprising: a plurality of transfer devices that transfer developed latent images formed on the plurality of photosensitive drums, the transfer devices being disposed on an opposite side of the respective photosensitive drums with respect to the belt, wherein each one of the plurality of image forming devices comprises one of the plurality of photosensitive drums, one of the plurality of developing devices, and one of the plurality of transfer devices, and an entirety of the photosensitive drum and at least a portion of the transfer device of an adjacent one of the plurality of image forming devices are disposed vertically within a horizontal width of the developing device of one of the plurality of image forming devices. 5. The image forming apparatus according to claim 1, further comprising: a plurality of cleaning devices that remove the developing agent remaining on the plurality of photosensitive drums, the cleaning devices being disposed around the respective photosensitive drums, wherein each one of image forming devices comprises one of the plurality of photosensitive drums, one of the plurality of developing devices, and one of the plurality of cleaning devices, and an entirety of the photosensitive drum and at least a portion of the cleaning device of an adjacent one of the plurality of image forming devices are disposed vertically within a horizontal width of the developing device of one of the plurality of image forming devices. 6. An image forming apparatus comprising: a belt; a plurality of photosensitive drums that face the belt; a plurality of exposing devices that form a plurality of latent images on the plurality of photosensitive drums, the exposing devices being disposed around the respective photosensitive drums; a plurality of developing devices that develop the plurality of latent images formed on the plurality of photosensitive drums using a developing agent; and a plurality of image forming devices, each one of the plurality of image forming devices comprising one of the plurality of photosensitive drums, one of the plurality of exposing devices, and one of the plurality of developing devices, and at least a portion of the exposing device of an adjacent one of the plurality of image forming devices being disposed vertically within a horizontal width of the developing device of one of the plurality of image forming devices, wherein each developing device includes two augers and a developing roll, the two augers stirring the developing agent and feeding the developing agent to the developing roll, the developing roll facing the photosensitive drum corresponding to each developing device, the developing roll being provided at a higher level than the two augers and being separate from the two augers. 7. The image forming apparatus according to claim 6, further comprising: a plurality of charging devices that charge the plurality of photosensitive drums, the charging devices being disposed around the respective photosensitive drums, wherein each one of image forming devices comprises one of the plurality of photosensitive drums, one of the plurality of charging devices, and one of the plurality of developing devices, and at least a portion of the charging device and at least a portion of the exposing device of an adjacent one of the plurality of image forming devices are disposed vertically within a horizontal width of the developing device of one of the plurality of image forming devices. 8. The image forming apparatus according to claim 6, further comprising: a plurality of transfer devices that transfer developed latent images formed on the plurality of photosensitive drums, the transfer devices being disposed on an opposite side of the respective photosensitive drums with respect to the belt, wherein each one of image forming devices comprises one of the plurality of photosensitive drums, one of the plurality of exposing devices, one of the plurality of developing devices, and one of the plurality of transfer devices, and at least a portion of the exposing device and at least a portion of the transfer device of an adjacent image forming devices are disposed vertically within a horizontal width of the developing device of one of the plurality of image forming devices. 9. An image forming apparatus comprising: a belt; a plurality of photosensitive drums that face the belt; a plurality of developing devices that develop a plurality of latent images formed on the plurality of photosensitive drums using a developing agent, the developing devices being disposed around the respective photosensitive drums; a plurality of transfer devices that transfer developed latent images formed on the plurality of photosensitive drums, the transfer devices being disposed on an opposite side of the respective photosensitive drums with respect to the belt; a plurality of image forming devices, each one of a plurality of image forming devices comprising one of the plurality of photosensitive drums, one of the plurality of developing devices, and one of the plurality of transfer devices, and at least a portion of the transfer device of an adjacent one of the plurality of image forming devices being disposed vertically within a horizontal width of the developing device of one of the plurality of image forming devices; a plurality of charging devices that charge the plurality of photosensitive drums, the charging devices being disposed around the respective photosensitive drums; and a plurality of exposing devices that form a plurality of latent images on the plurality of photosensitive drums, the exposing devices being disposed around the respective photosensitive drums, wherein each developing device includes two augers and a developing roll, the two augers stirring the developing agent and feeding the developing agent to the developing roll, the developing roll facing the photosensitive drum corresponding to each developing device, the developing roll being provided at a higher level than the two augers and being separate from the two augers, each one of image forming devices comprises one of the plurality of photosensitive drums, one of the plurality of charging devices, one of the plurality of developing devices, and one of the plurality of transfer devices, at least a portion of the charging device and at least a portion of the transfer device of another one of the plurality of image forming devices is disposed vertically within a horizontal width of the developing device of one of the plurality of image forming devices, each one of image forming devices comprises one of the plurality of photosensitive drums, one of the plurality of charging devices, one of the plurality of exposing devices, one of the plurality of developing devices, and one of the plurality of transfer devices, and at least a portion of the charging device, at least a portion of the exposing device, and at least a portion of the transfer device of an adjacent one of the plurality of image forming devices are disposed vertically within a horizontal width of the developing device of one of the plurality of image forming devices.
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