| 摘要 |
<p>PROBLEM TO BE SOLVED: To constitute a coordinate input device simply and to effectively clean soiling on the surfaces of transmission rollers, by providing plural cleaning pawls which fall down to abut on the plural transmission rollers when a click button means is turned on and rise up to be detected from the plural transmission rollers when the click button means is turned off. SOLUTION: When the click button 1 is clicked, cleaning pawls 4 are pushed down and abut on transmission rollers 3 and when the transmission rollers 3 are rotated, these pawls are operated so as to slide in contact with their surfaces. Thus, dust or soiling stuck on the transmission rollers 3 are scraped away like shaved off. After wards, when the click of the click button 1 is released, the cleaning pawls 4 get away of the transmission rollers 3 to be embedded in comparatively soft cleaning members 6 of separate bodies provided around the pawls and even when dust or soiling is stuck on the cleaning pawls, 4, it is removed while the click button 1 is vertically moved.</p> |
