| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that the drive transmission from a drive source to a drive part is interrupted, by preventing a transmission gear from being shifted in the axial direction when drive is transmitted. SOLUTION: A printer part 11 has a drive transmission mechanism 70 for switching the transmission of the driving force from a motor. The drive transmission mechanism 70 has an input lever 74 supported slidably by a support shaft 73, a coil spring 65 and a first switching gear 71. A control mechanism 80 is arranged between the support shaft 73 and the first switching gear 71. The first switching gear 71 can be engaged with a second output gear 172 for transmitting the driving force to a paper feed roller 25. When drive is transmitted in a state where the first switching gear 71 is arranged at the first position, a projection part 81 of the control mechanism 80 intrudes into a groove 82 to restrict the movement of the transmission gear in the axial direction. COPYRIGHT: (C)2011,JPO&INPIT
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