| 摘要 |
A stylus 1 for a digitiser comprises an elongate tubular member 7 with an end cap 9 enclosing a cavity 8, the end cap 9 having an aperture 9b through it, a spacer 15 fitted in the cavity 8 and having a ball seating recess, a ball 11 which extends through the end cap 9 and a spring 13 in the cavity 8 behind the ball 11 arranged to urge the ball 11 against the end cap 9, where the ball seating recess comprises a solid dry surface 15a around which the ball 11 is free to rotate. Also described is a combination of the stylus 1 and a digitiser, where the stylus 1 is used to write on the digitiser by rolling of the ball 11 on the writing surface of the digitiser, the surface comprising a compressible plastics material. The digitiser may be a device in which an electrical property of the device is changed in a region corresponding to the surface region written upon by the stylus 1. |
