IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0787360
(2004-02-27)
|
등록번호 |
US-7327975
(2008-02-05)
|
우선권정보 |
JP-2003-053521(2003-02-28); JP-2003-053671(2003-02-28) |
발명자
/ 주소 |
|
출원인 / 주소 |
- Kabushiki Kaisha Toshiba
- Toshiba Tec Kabushiki Kaisha
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
12 인용 특허 :
7 |
초록
▼
According to a toner cartridge of this invention, a region (R3) extending along the outer circumferential direction of a toner cartridge (50) is not tapered, and a region (R1) on the inner wall of a developing device (10) which corresponds to the region (R3) is not tapered either. This prevents the
According to a toner cartridge of this invention, a region (R3) extending along the outer circumferential direction of a toner cartridge (50) is not tapered, and a region (R1) on the inner wall of a developing device (10) which corresponds to the region (R3) is not tapered either. This prevents the occurrence of backlash between them, and allows the shutter of the toner replenishment port of the developing device (10) to be reliably closed when the toner cartridge (50) is slid. This can therefore prevent toner from leaking and contaminating the image forming apparatus. According to a toner cartridge of this invention, a cap (60) which seals the opening portion of a casing (51) of a toner cartridge (50a) is formed from a transparent member. This allows an easy check of the color of toner from the front surface side of an image forming apparatus, and eliminates the necessity to add a new member for a color check, thereby contributing to a reduction in cost.
대표청구항
▼
What is claimed is: 1. A toner cartridge comprising a tapered portion extending from near a front end to near a rear end along a longitudinal direction of an outer circumferential portion, and a plurality of rib portions in the form of ribs formed on a region extending from the front end to a prede
What is claimed is: 1. A toner cartridge comprising a tapered portion extending from near a front end to near a rear end along a longitudinal direction of an outer circumferential portion, and a plurality of rib portions in the form of ribs formed on a region extending from the front end to a predetermined position to make a size of the region in a direction perpendicular to the longitudinal direction uniform along the longitudinal direction. 2. A cartridge according to claim 1, wherein said toner cartridge includes a toner replenishment port for replenishing toner when said cartridge is housed in a developing device, and a shutter which opens/closes the toner replenishment port, and the predetermined position is near the toner replenishment port. 3. A toner cartridge exchangeably mounted in an image forming apparatus, comprising: a container storing toner therein having, a first portion which extends in a longitudinal direction and has a substantially cylindrical shape, a substantially triangular second portion which is formed integrally with said first portion along the longitudinal direction, and a third portion integrally formed with at least part of said first portion along the longitudinal direction; a toner agitating member provided in said container; a screw provided in said container; a discharge port which is formed in one end of said third portion to discharge toner conveyed by said screw; a shutter member which opens/closes said discharge port as said toner cartridge moves relative to the image forming apparatus when said toner cartridge is replaced; a plurality of gears which are provided at one end of said container and outside said container to rotate said screw and said toner agitating member; and a cap which closes one end of said container which is located opposite to a side where said plurality of gears are provided, along a longitudinal direction of said container, has a grip with which said container can be pulled out, and allows discrimination of a color and amount of toner contained in said container; wherein said toner cartridge, being configured to be inserted in and removed from the image forming apparatus along a longitudinal direction of said toner cartridge and having on an outer circumference thereof, a tapered portion inclined along the longitudinal direction and an untapered portion substantially parallel to a direction to be removed. 4. A cartridge according to claim 3, wherein said container has a tapered portion at least partly along the longitudinal direction. 5. A cartridge according to claim 3, wherein said container has a tapered portion inclined in the longitudinal direction, and an untapered portion. 6. A cartridge according to claim 3, further comprising an opening/closing member for opening/closing a replenishment port of the image forming apparatus. 7. A cartridge according to claim 3, wherein toner is collected to a central portion of said container along the longitudinal direction by rotation of said screw and conveyed from near the central portion toward the opening portion by said screw. 8. A toner cartridge exchangeably mounted in an image forming apparatus, comprising: a container storing toner therein having, a first portion which extends in a longitudinal direction and has a substantially cylindrical shape, a substantially triangular second portion which is formed integrally with said first portion along the longitudinal direction, and a third portion integrally formed with at least part of said first portion along the longitudinal direction; a toner agitating member provided in said container; a screw provided in said container; a discharge port which is formed in one end of said third portion to discharge toner conveyed by said screw; a shutter member which opens/closes said discharge port as said toner cartridge moves relative to the image forming apparatus when said toner cartridge is replaced; a plurality of gears which are provided at one end of said container and outside said container to rotate said screw and said toner agitating member; and a cap which closes one end of said container which is located opposite to a side where said plurality of gears are provided, along a longitudinal direction of said container, has a grip with which said container can be pulled out, and allows discrimination of a color and amount of toner contained in said container; wherein said toner cartridge, being configured to be inserted in and removed from the image forming apparatus along a longitudinal direction of said toner cartridge and having on an outer circumference thereof, a tapered portion inclined along the longitudinal direction and an untapered portion substantially parallel to a direction to be removed; wherein said toner cartridge is stored in a revolver which is rotatably provided in said image forming apparatus, when said container is in the revolver, said container has a tapered region on an outer circumferential portion which is farthest from a center of said revolver. 9. A cartridge according to claim 3, wherein said toner houses a color toner. 10. A cartridge according to claim 3, wherein said toner cartridge is stored in a revolver which is rotatably provided in said image forming apparatus when said container is in the revolver, said container has a tapered region on an outer circumferential portion which is farthest from a center of said revolver. 11. A cartridge according to claim 3, wherein said cap allows discrimination of a color of toner contained in said container.
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