| 摘要 |
A thermal printer provides first and second sub-frames pivotally supported on a main frame to provide access to a dot resistance heater for cleaning and easy removal of the respective structures. Each structure is releasably fixed in operating position in which a resilient drive roller on the second sub-frame presses the thermally sensitive paper against the printer head. The same roller is driven by a motor on the second sub-frame and moves the paper along the paper path by friction drive. The paper moves between a fixed and rotatable knife on the second sub-frame actuated by crank and linkage connection to the core of a solenoid whose winding is fixed on the main frame. A curved guide plate directs the paper toward an opening and into a surface which imposes an S curve on the paper. The S curve allows enlargement of a storage loop in the paper in case the opening is blocked.
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