| 摘要 |
A carriage guide mechanism for a printer enables using plural rolling bearings to move a carriage along a guide shaft with no play or vibration. The carriage bearing units of the printer carriage guide mechanism have three rolling bearings each that hold the guide shaft from three directions. The outer ring of each rolling bearing makes line contact with the outer ring roller surfaces, which each face a different direction and are formed on the guide plate of the guide shaft, and contact therebetween is maintained by the urging force of a flat spring. Because chatter and vibration, particularly play and vibration around the center axis of the guide shaft, can be prevented when the carriage moves, a drop in print quality due to vibration of the printhead caused by carriage chatter or vibration can be reliably prevented.
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