| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a paper conveyance device excellent in the accuracy of paper feeding. <P>SOLUTION: The paper conveyance device 40 of a printer 100 for printing information includes a first conveyance mechanism 43 having a tractor 44, a second conveyance mechanism 53 which is arranged between the first conveyance mechanism 43 and a print head 26 and has rollers, a third conveyance mechanism 63 which is arranged downstream of the print head 26 and has rollers, and a detector 51 for detecting the real paper-feeding amount Ta of the first conveyance mechanism 43 and the rotation state of rollers of the second conveyance mechanism 53. In the paper conveyance device, there is following relationship: the paper-feeding amount T3 of the third conveyance mechanism > the paper-feeding amount T2 of the second conveyance mechanism >the paper-feeding amount T1 of the first conveyance mechanism, wherein the paper-feeding amount T1 of the first conveyance mechanism 43 is defined as a reference paper-feeding amount Tb, and the paper-holding force F1 of the first conveyance mechanism > the paper-holding force F2 of the second conveyance mechanism > the paper-holding force F3 of the third conveyance mechanism, and the actual paper-feeding amount Ta and the rotation state of rollers are detected, and then the paper-feeding amount T1 is adjusted. <P>COPYRIGHT: (C)2012,JPO&INPIT |
