Corona discharging apparatus with automatic cleaning mechanism for corona wire
AssigneeCanon Kabushiki Kaisha
InventorMichiaki Endo
Life of this patent
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Abstract
The present invention provides a corona discharging apparatus with an automatic cleaning mechanism for a corona wire comprising a plurality of sets of cleaning units, one of which having an L-shaped cleaning member made of elastic material. The cleaning members are abutted against a surface of the corona wire from different directions to effectively clean the corona wire.
Claims28
A corona discharging apparatus, comprising:
- a corona discharge wire;
- a support portion for spanning and supporting said corona discharge wire;
- cleaning means contacting said corona discharge wire along the spanning direction of said corona discharge wire for cleaning said corona discharge wire, said cleaning means comprising a pair of first cleaning members and a pair of second cleaning member, wherein cleaning surfaces of said first pair of cleaning members form an angle with respect to said cleaning surfaces of said second pair of cleaning members, the corona discharge wire being nipped at said angle, when viewed in a cross section of said corona discharge wire, between at least one of said pair of first cleaning members and at least one of said pair of second cleaning members, the other of each respective pairs of cleaning members engaging said corona discharge wire when one of each respective pairs of cleaning members nips said corona discharge wire.
A corona discharge apparatus according to claim 11, further comprising drive means for applying a drive force for shifting said first and second cleaning members in the spanning direction of said corona discharge wire.
A corona discharging apparatus, comprising:
- a corona discharge wire;
- a support portion for spanning and supporting said corona discharge wire;
- and
- cleaning means contacting said corona discharge wire in the spanning direction of said corona discharge wire for cleaning said corona discharge wire, said cleaning means having a cleaning member comprising four cleaning surfaces, each cleaning surface being engageable with said wire and extending along the length of said wire and each of said four cleaning surfaces being offset at substantially right angles, when viewed in a cross section of said corona discharge wire.
Dependencies are inferred from the claim text.