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US 7,515,850 B2Granted
Sheet conveying apparatus and image forming apparatus
AssigneeRicoh Company, Ltd.
InventorKenichi Hasegawa
Life of this patent
Estimating the term…
Abstract
A pressure lever includes an oscillating edge that is capable of contacting a supporting shaft of a pressure roller. An oscillating lever includes a plurality of oscillating edges around a fixed edge. An elastic unit is latched between the fixed edge of the oscillating lever and an immovable portion, and biases the oscillating lever towards one of the rollers. A position of the fixed edge of the oscillating lever is capable of being changed in a state of being deviated from a position before oscillating based on an oscillating position of the oscillating lever separately from an oscillation of the fixed edge.
Claims18
A sheet conveying apparatus comprising:
- a conveying unit that conveys a sheet by holding in a nip portion, the nip portion formed by a pair of rollers as a rotating unit such that one of the pair of rollers contacts and pressurizes the other roller;
- a pressure lever of which a fixed edge is oscillatably supported by an immovable portion, the pressure lever including an oscillating edge, the oscillating edge of the pressure lever being capable of contacting a supporting shaft of a pressure roller;
- an oscillating lever of which a fixed edge is oscillatably supported by the pressure lever in the oscillating edge side, the oscillating lever including a plurality of oscillating edges around the fixed edge of the oscillating lever;
- and
- an elastic unit that is latched between the fixed edge of the oscillating lever and the immovable portion, and biases the oscillating lever towards the one of the pair of rollers, wherein
- a position of the fixed edge of the oscillating lever, from among positions at which an end of the elastic unit is latched on, is capable of being changed in a state of being deviated from a position before oscillating based on an oscillating position of the oscillating lever separately from an oscillation of the fixed edge of the oscillating lever.
3 more elements
A sheet conveying apparatus comprising:
- a conveying unit that conveys a sheet by holding in a nip portion, the nip portion formed by a pair of rollers as a rotating unit such that one of the pair of rollers contacts and pressurizes the other roller;
- a pressure lever of which a fixed edge is oscillatably supported by a fixed supporting unit, the pressure lever including a pressurizing unit that can contact a rotating shaft of a pressure roller;
- and
- a press lever of which a fixed edge is oscillatably supported by the pressure lever in an oscillating edge side, the press lever pressing an oscillating lever to oscillate from a pressure-released position to a pressurizing position, wherein
- while the press lever presses the oscillating lever to oscillate from the pressure-released position to the pressurizing position, the press lever oscillates to move away from a supporting point of the oscillating lever.
2 more elements
An image forming apparatus comprising:
- a sheet conveying apparatus including
- a conveying unit that conveys a sheet by holding in a nip portion, the nip portion formed by a pair of rollers as a rotating unit such that one of the pair of rollers contacts and pressurizes the other roller;
- a pressure lever of which a fixed edge is oscillatably supported by a immovable portion, the pressure lever including an oscillating edge, the oscillating edge of the pressure lever being capable of contacting a supporting shaft of a pressure roller;
- an oscillating lever of which a fixed edge is oscillatably supported by the pressure lever in the oscillating edge side, the oscillating lever including a plurality of oscillating edges around the fixed edge of the oscillating lever;
- and
- an elastic unit that is latched between the fixed edge of the oscillating lever and the immovable portion, and biases the oscillating lever towards the one of the pair of rollers, wherein
- a position of the fixed edge of the oscillating lever, from among positions at which an end of the elastic unit is latched on, is capable of being changed in a state of being deviated from a position before oscillating based on an oscillating position of the oscillating lever separately from an oscillation of the fixed edge of the oscillating lever.
4 more elements
Dependencies are inferred from the claim text.