Toner cartridge

Abstract

A toner cartridge comprises a toner container which contains toner, a driving member winch rotationally drives a conveying member, an agitating member Which agitates a toner in the toner container while being rotated, a driven member which rotates in association with the driving member which is for rotationally driving the agitating member, and a rotational body which rotates according to rotation of the driven member, has a plurality of slits in rotational circumference for identifying a type of the toner cartridge, and has 1/K or more of the slits when a ratio of a rotational speed R1 (rad/s) of the driving member and a rotational speed R2 (rack) of the driven member is K=R2/R1.

What is claimed is: 
     
       1. A toner cartridge comprising:
 a toner container which contains toner; 
 a toner supplying opening which supplies the toner contained in the toner container to an image forming apparatus; 
 an agitating member which agitates the toner contained in the toner container; 
 a conveying member which conveys the toner contained in the toner container toward the toner supplying opening; 
 a plurality of gears which are provided on an exterior portion of the toner container and rotate the conveying member and the agitating member, the plurality of gears including two gears which have different diameters, wherein a large gear of the two gears is coaxially attached to the agitating member, a small gear of the two gears is coaxially attached to the conveying member, and the large gear and small gear are in direct contact with each other; 
 an optical penetration membera rotational body which has a plurality of optical penetration partslight incidence parts and is coaxially provided on athe large gear of the two gears; and 
 a gear cover which covers a part of the plurality of the gears, the gear cover being extended in the same direction as an extending direction of the optical penetration member. 
 
     
     
       2. The toner cartridge according to  claim 1 , wherein the toner container has a predetermined length along one direction, while the plurality of the gears and the gear cover are provided on one end of the toner container in the one direction, and a filling opening used for filling the toner container with the toner is formed on the other end of the toner container. 
     
     
       3. The toner cartridge according to  claim 2 , wherein an outer edge of the gear cover is formed at further position than the plurality of the gears and an outer edge of the optical penetration member from the toner container toward an extending direction when the center of any one gear of the plurality of the gears is set as a reference point. 
     
     
       4. The toner cartridge according to  claim 3 , wherein the gear cover has a shape such that the toner cartridge can be stood stationary in a state that the gear cover is positioned at the bottom. 
     
     
       5. The toner cartridge according to  claim 4 , wherein a plane including an outer edge of the toner cartridge and an outer edge of the gear cover formed at positions further than outer edges of the plurality of the gears and the optical penetration member from a part of the toner container toward an extending direction when the center of any one gear of the plurality of gears is set as a reference point is in a perpendicular relationship with respect to the toner cartridge. 
     
     
       6. The toner cartridge according to  claim 4 , wherein a plane including an outer edge of the gear cover is in a perpendicular relationship with respect to the toner cartridge. 
     
     
       7. An image forming apparatus, which has a toner cartridge inserted therein configured to supplying supply toner to the image forming apparatus, said apparatus comprising:
 a toner container which contains toner; 
 a toner supplying opening which supplies the toner contained in the toner container to the image forming apparatus; 
 an agitating member which agitates the toner contained in the toner container; 
 a conveying member which conveys the toner contained in the toner container toward towards the toner supplying opening; 
 a plurality of gears which are provided on an exterior portion of the toner container and rotate the conveying member and the agitating member, the plurality of gears including two gears which have different diameters, wherein a large gear of the two gears is coaxially attached to the agitating member, a small gear of the two gears is coaxially attached to the conveying member, and the large gear and the small gear are in direct contact with each other; 
 an optical penetration membera rotational body which has a plurality of optical penetration partslight incidence parts and is coaxially provided on athe large gear of the two gears; 
 a gear cover which covers a part of the plurality of the gears, the gear cover being extended in the same direction as an extending direction of the optical penetration member; and 
 a detecting unit which detects rotation of the optical penetration member rotational body. 
 
     
     
       8. The image forming apparatus according to  claim 7 , wherein an outer edge of the gear cover is configured to prevent lead wires that are connected to the detecting unit from being entangled in the gears. 
     
     
       9. The toner cartridge according to claim 1, wherein the rotational body is configured to enable discrimination of a type of the toner cartridge. 
     
     
       10. The image forming apparatus according to claim 7, wherein the rotational body is configured to enable discrimination of a type of the toner cartridge.