Pinch roller device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 22, 2002
Issued Date -
N/A
app pub date -
Aug 4, 2000
filing date -
Jul 22, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pinch roller apparatus which can stably move a tape in accordance with a sufficient self-aligning function is provided. A circular sliding plate brought into contact with both of an upper end surface and a lower end surface of a plain bearing is mounted to a pinch roller shaft so as to restrict an incline of the plain bearing. When setting a length of an axial gap between the circular sliding plate brought into contact with the upper end surface of the plain bearing and the plain bearing to A and a length of an outer diameter of the circular sliding plate to B, the structure is made such as to satisfy a relation 0.007.ltoreq.A/B.ltoreq.0.06. Further, when setting a clearance in a diametrical direction between the pinch roller shaft and the sliding surface of the plain bearing to X and an effective length of the sliding surface of the plain bearing to Y, it is preferable to structure so as to satisfy the relation X/Y.gtoreq.0.052.
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