Electrophotographic reproduction system with a multifaceted charging mechanism
View Patent ↗A charging mechanism for an electrophotographic reproduction system has a charger cartridge inserted into a charger sleeve. The charger cartridge has multiple facets, each with a corona charger. The charger cartridge is positioned in the charger sleeve to have the corona charger of one facet adjacent to a photoconductor in the electrophotographic reproduction system. The charger cartridge may be repositioned in the charger sleeve to have another corona charger from another facet adjacent to the photoconductor.
1. An electrophotographic reproduction system, comprising:
a photoconductor; and
a charging mechanism having a charger sleeve and a charger cartridge,
where the charger sleeve forms a channel with an aperture, where the aperture is positioned adjacent to the photoconductor; and
where the charger cartridge has a first facet and a second facet, where the first facet has a first corona charger disposed thereon, where the second facet has a second corona charger disposed thereon, where the charger cartridge is positioned within the channel of the charger sleeve to have the first facet face the aperture, where the charger cartridge may be repositioned in the channel to have the second facet face the aperture.
2. The electrophotographic reproduction system of claim 1 , where the first facet has a first base electrode connected to the base, where the first facet has at least one first wire held in tension by a pair of first support members connected to the base, where the at least one first wire is suspended above the first base electrode;
where the second facet has a second base electrode connected to the base, where the second facet has at least one second wire held in tension by a pair of second support members connected to the base, where the at least one second wire is suspended above the second base electrode; and
where the first and second base electrodes are electrically isolated from each other.
3. The electrophotographic reproduction system of claim 2 , where the first facet has four first wires, where each first wire is held in tension by a pair of first support members, where the second facet has four second wires, where each second wire is held in tension by a pair of second support members, and where the charger sleeve has a grid electrode covering the aperture.
4. The electrophotographic reproduction system of claim 3 , where the first four wires comprise a first continuous wire, and where the second four wires comprise a second continuous wire.
5. The electrophotographic reproduction system of claim 1 , where the charger cartridge may be removed from the charger sleeve.
6. The electrophotographic reproduction system of claim 1 ,
where the charger sleeve has a contact post and at least one alignment post,
where the charger cartridge has at least two notches, and
where the at least two notches interface with the contact post and at least one alignment post when the charger cartridge is positioned inside the charger sleeve.
7. The electrophotographic reproduction system of claim 6 ,
where the contact post has a post electrical contact,
where each notch has a notch electrical contact,
where the post electrical contact interfaces with one of the notch electrical contacts, and
where the interface between the post and notch electrical contacts provides an electrical connection for applying a voltage potential to one of the first and second corona charges.
8. The electrophotographic reproduction system of claim 1 , where the charging mechanism further comprises:
a charger bracket connected to the charger sleeve; and
an alignment mechanism connected to the charger bracket and the charger sleeve, where the alignment mechanism moves the charger sleeve into a position adjacent to the photoconductor.
9. The electrophotographic reproduction system of claim 8 , where the alignment mechanism comprises:
biasing latch and at least one bolt,
where the charger bracket is slidably connected to the charger sleeve on the at least one bolt,
where the biasing latch has a lever element and a cam element; and
where the cam element translates a rotational movement of the lever element into a reciprocating motion of the charger sleeve on the at least one bolt.
10. The electrophotographic reproduction system of claim 9 , further comprising at least one stop, where the cam element moves the charger sleeve against the at least one stop when the lever element rotates.
11. The electrophotographic reproduction system of claim 1 , further comprising an exposure machine, a development station, and a transfer mechanism, where the exposure machine projects an image onto the photoconductor, where the development station deposits toner onto the photoconductor, and where the transfer mechanism transfers a toner image from the photoconductor onto a medium.
12. A charging mechanism for an electrophotographic reproduction system, comprising:
a charger sleeve forming a channel with an aperture; and
a charger cartridge having at least two facets, where each facet has a corona charger disposed thereon, where the charger cartridge is positioned within the channel of the charger sleeve to have one facet face the aperture, where the charger cartridge may be repositioned in the channel to have another facet race the aperture.
13. The charging mechanism of claim 12 , where the corona charger comprises at least one wire held in tension by a pair of support members, where the at least one wire is suspended above a base electrode.
14. The charging mechanism of claim 13 , where the at least one wire comprises a continuous wire held in tension by each pair of support members.
15. The charging mechanism of claim 13 , where the at least one wire comprises individual wires held in tension by each pair of support members.
16. The charging mechanism of claim 7 , where the charger sleeve has a grid electrode covering the aperture.
17. The charging mechanism of claim 7 , where each corona charger is electrically isolated from other corona chargers.
18. The charging mechanism of claim 12 , where the corona charger comprises four wires, where each wire is held in tension by a pair of support members, where the four wires are suspended above the base electrode, and where the charger sleeve has a grid electrode covering the aperture.
19. The charging mechanism of claim 12 , where the charging mechanism further comprises:
a charger bracket connected to the charger sleeve; and
an alignment mechanism connected to the charger bracket and the charger sleeve, where the alignment mechanism moves the charger sleeve.
20. The charging mechanism of claim 19 , where the alignment mechanism comprises:
biasing latch and at least one bolt,
where the charger bracket is slidably connected to the charger sleeve on the at least one bolt,
where the biasing latch has a lever element and a earn element; and
where the cam element translates a rotational movement of the lever element into a reciprocating motion of the charger sleeve on the at least one bolt.
21. The charging mechanism of claim 20 , further comprising at least one stop, where the cam element moves the charger sleeve against the at least one stop when the lever element rotates.
22. The charging mechanism of claim 21 , where the at least one stop comprises a retaining lip formed by the charger bracket.
23. The charging mechanism of claim 12 ,
where the charger cartridge comprises a first facet and a second facet on opposite sides of a base,
where the first facet has a first base electrode connected to the base, where the first facet has at least one first wire held in tension by a pair of first support members connected to the base, where the at least one first wire is suspended above the first base electrode,
where the second facet has a second base electrode connected to the base, where the second facet has at least one second wire held in tension by a pair of second support members connected to the base, where the at least one second wire is suspended above the second base electrode; and
where the first and second base electrodes are electrically isolated from each other.
24. The charging mechanism of claim 23 ,
where the charger sleeve has a contact post and an alignment post,
where the charger cartridge has a first notch and a second notch,
where the first notch is on the first facet,
where the second notch is in the second facet,
where the first notch interfaces with the contact post when the first facet is adjacent to the apertures,
where the second notch interfaces with the alignment post when the first facet is adjacent to the aperture,
where the second notch interfaces with the contact post when the second facet is adjacent to the aperture; and
where the first notch interfaces with the alignment post when the second facet is adjacent to the aperture.
25. The charging mechanism of claim 24 ,
where the contact post has a post electrical contact,
where each notch has a notch electrical contact,
where the post electrical contact interfaces with the first notch electrical contact when the first facet is adjacent to the aperture
where the interface between the post electrical contact and the first notch electrical contact provides an electrical connection for applying a voltage potential to a first corona charger on the first facet,
where the post electrical contact interfaces with the second notch electrical contact when the second facet is adjacent to the aperture; and
where the interface between the post electrical contact and the second notch electrical contact provides another electrical connection for applying a voltage potential to a second corona charger on the second facet.
26. The charging mechanism of claim 12 , where the first facet comprises four first wires, where each first wire is held in tension by a pair of first support members, where the second facet comprises four second wires, and where each second wire is held in tension by a pair of second support members.
27. The charging mechanism of claim 12 , where the charger cartridge may be removed from the charger sleeve.
28. The charging mechanism of claim 12 , where the charger sleeve forms at least one post, where the charger cartridge forms at least one notch, where the post interfaces with the notch when the charger cartridge is in the channel of the charger sleeve.
29. The charging mechanism of claim 12 , where the charger sleeve has a front side forming an opening, where the charger cartridge has front section positioned within the opening, where the front side has a substantially air-tight seal with the front section.
30. The charging mechanism of claim 12 , where the charger sleeve has a front side forming an opening, where the charger cartridge has front section positioned within the opening, where the front side has a substantially dust-free seal with the front section.