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US 2004/0170448 A1Published application
Toner cartridge and developing device
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorYoshiaki Tanaka
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AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorYoshiaki Tanaka
Estimating the term…
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.
A toner cartridge comprising an untapered region extending from near a front end to a predetermined position along a longitudinal direction of an outer circumferential portion, and a tapered region extending from the predetermined position to near a rear end.
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.
A developing device which can house a toner cartridge having, on an outer circumferential portion, a first untapered region extending from near a front end to a predetermined position and a tapered region extending from the predetermined position to near a rear end, comprising
A toner cartridge which is detachably provided in an image forming apparatus, 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.
A toner cartridge exchangeably mounted in an image forming apparatus, comprising:
Dependencies are inferred from the claim text.