| 摘要 |
A book edge copying system is enabled by providing a full rate/half rate scanning system 36,38 modified to tilt the system axis so as to move the start of scan location to a point P min coincident with the book edge location. A full rate mirror, 36 in one embodiment, is tilted at an angle (45 + 1/2 theta )<0> to the platen perpendicular thereby effectively tilting the system axis by an angle theta . The off-axis angle theta introduced at the scan mirror 36 is compensated for by appropriate rotation of the projection lens 40 and the image side optical elements 46. |
