Patent ID: 9725261
Date: 2017-08-08
CPC Classifications: B65H,G03G

Claim:
1. A conveyance unit comprising: a cassette removably attached to an apparatus body; a conveyance interlocked part provided in the apparatus body so as to be adjacent the cassette; wherein the cassette includes; a sheet storage part configured to store a sheet; a lift plate liftably provided between a lowered position along a bottom plate of the sheet storage part and a raised position separated upward from the bottom plate; and a biasing member configured to bias the lift plate to the raised position so as to cause the sheet on the lift plate to contact with a pickup roller; wherein the conveyance interlocked part includes: a lever configured to engage with the lift plate when the cassette is attached to the apparatus body and being liftable together with the lift plate; a pressing mechanism configured to press the lever downward to keep the lift plate at the lowered position; and a support member provided between the apparatus body and the lever so as to suppress a drop of the lever disengaged from the lift plate when the cassette is detached from the apparatus body, wherein the pressing mechanism includes: an eccentric cam fixed to an eccentric shaft; and a driving unit configured to rotate the eccentric cam in one direction; wherein the eccentric cam includes a lock part receded on a surface of the eccentric cam, the lever includes: a lever body rotatably attached to the apparatus body around a lever turning shaft; an arm part configured to extend from the lever body toward the lift plate and coming into contact with an upper surface of the lift plate; and a boss provided in the lever body so as to be relatively slidably along the surface; the support member is formed to be elastically deformable in the lift direction of the lever, the lever is disposed at a pressing position and holds the lift plate in the lowered position when the eccentric cam rotates and the boss is locked by the lock part, and the lever is lowered from the pressing position within a range in which the support member is elastically deformable and is put into a state in which the lever can be lifted together with the lift plate by a bias force of the biasing member in a case when the eccentric cam rotates further from the state in which the boss is locked by the lock part and the boss is unlocked from the lock part.