| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in miniaturization of a body device when a cassette mounting part of the body device is provided with a projecting part for releasing locking of a paper loading plate, and a problem in break of a claw of a paper cassette when a knob of the paper cassette is grabbed and pulled out in taking the paper cassette out of the body device. SOLUTION: A cassette lock mechanism comprises an energizing member 34 for energizing the paper cassette 19 to a cassette insertion opening, a cassette lock lever 32 having the projecting part 32a corresponding to a cassette lock position, a cassette lock cam having a recessed part 39 engaging with the projecting part 32a and cam surfaces 38a and 38b abutting on the side surface of the projecting part 32a to guide the projecting part 32a to the recessed part 39. An attaching/detaching operation of the paper cassette 19 is always a pressing operation.
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