Drum support bushing with orienting features
View Patent ↗A photoconductive drum may be located and supported in an image forming apparatus via bushings at each end of a drum axle. The bushings may be produced from a single die cavity and may include orientation features which may be employed to key the bushings with a housing, such as a toner cartridge cleaner housing.
1. A pair of bushings for a photoconductive drum containing an axle to engage with a housing, said bushings comprising:
a hole formed therein to receive said axle, the bushings capable of engaging with end sections of said axle;
an orientation feature on said bushings capable of engaging with corresponding location features in said housing so that said bushings are keyed to said housing;
wherein said pair of bushings containing said orientation feature are formed from a common die cavity wherein said bushings, when engaged to said axle of said photoconductive drum, position said axle parallel to said location features in said housing.
2. The bushings of claim 1 wherein said orientation feature comprises two geometrical features on each of said bushings.
3. The bushings of claim 1 wherein said bushings comprise metallic bushings.
4. The bushings of claim 1 wherein said bushings comprise bronze bushings.
5. The bushings of claim 1 wherein said bushings comprise plastic bushings.
6. The bushings of claim 1 wherein said orientation feature comprises a notch in said bushing.
7. The bushings of claim 1 wherein said bushings have an outer circumferential surface and said orientation feature comprises a relatively flat surface as a portion of said outer surface.
8. The bushings of claim 1 wherein said common die cavity is part of multi-cavity mold.
9. A removable cartridge for use in an imaging forming apparatus, comprising:
a housing wherein said housing has opposing side walls, each side wall including an opening to engage a bushing, said housing including location features;
a photoconductive drum including an axle;
a pair of bushings containing an orientation feature formed from a common die cavity wherein each of said bushings engage said axle and said orientation feature keys said bushing to said housing, wherein said bushings, when engaged to said axle of said photoconductive drum, position said axle parallel to said location features in said housing.
10. The cartridge of claim 9 wherein said orientation feature comprises two geometrical features on each of said bushings.
11. The cartridge of claim 9 wherein said bushings comprise metallic bushings.
12. The cartridge of claim 9 wherein said bushings comprise bronze bushings.
13. The cartridge of claim 9 wherein said bushings comprise plastic bushings.
14. The cartridge of claim 9 wherein said orientation feature comprises a notch in each of said bushings.
15. The cartridge of claim 9 wherein said bushings have an outer circumferential surface and said orientation feature comprises a relatively flat surface as a portion of said outer surface.
16. The cartridge of claim 9 wherein said common die cavity is part of a multi-cavity mold.
17. The cartridge of claim 9 wherein said housing comprises a toner cartridge cleaner housing.
18. The cartridge of claim 9 wherein said bushing is capable of locating said housing and drum in an image forming apparatus.
19. An image forming apparatus, comprising;
a photoconductive drum including an axle;
a pair of bushings formed from a single die cavity affixed to opposite ends of said axle, each bushing formed with at least one orientation feature,
a housing including a pair of opposing side walls each including an opening with a corresponding orientation feature to key said bushings to said housing, said housing including location features and wherein said bushings, when engaged to said axle of said photoconductive drum, position said axle parallel to said location features in said housing.
20. The image forming apparatus of claim 19 wherein said orientation feature comprises two geometrical features on each of said bushings.
21. The image forming apparatus of claim 19 wherein said bushings comprise metallic bushings.
22. The image forming apparatus of claim 19 wherein said bushings comprise bronze bushings.
23. The image forming apparatus of claim 19 wherein said bushings comprise plastic bushings.
24. The image forming apparatus of claim 19 wherein said orientation feature comprises a notch in each of said bushings.
25. The image forming apparatus of claim 19 wherein said bushings have an outer circumferential surface and said orientation feature comprises a relatively flat surface as a portion of said outer surface.
26. The image forming apparatus of claim 19 wherein said common die cavity is part of a multi-cavity mold.
27. The image forming apparatus of claim 19 wherein said housing comprises a toner cartridge cleaner housing.
28. The image forming apparatus of claim 19 wherein said bushing is capable of locating said housing and drum in an image forming apparatus.
29. A method for positioning a pair of bushings for a printer housing, said housing including location features, comprising:
supplying a common die cavity to form each of said pair of bushings;
forming each of said pair of bushings in said die cavity wherein said bushings include an orientation feature;
supplying said axle and engaging said bushings with said axle;
supplying a housing for said axle wherein said housing is capable of engaging with said bushings and said housing includes corresponding location features for said bushings to key said bushings to said housing; and
engaging said bushings with said housing wherein said bushings, when engaged to a photoconductive drum axle, position said axle parallel to said housing location features.
30. The method of claim 29 wherein said die cavity is one cavity in a multi-cavity mold.