| 摘要 |
PURPOSE:To prevent moire by keeping <=15 deg. opening arrangement angle, and enlarging this angle in proportion to the pitch of the opening arrangement. CONSTITUTION:An angle of opening arrangement to the longitudinal direction of a screen photoreceptor or the direction at right angles to the longitudinal direction is represented by x, and a pitch of its opening arrangement (in terms of mum) is expressed by y. The openings are arranged by the following relationship: x<=15, y<=14X, 20<=y<=170. The drawing shows a graphic relationship between the opening arrangement angle expressed by the X axis and the opening arrangement pitch expressed by the y axis, and the straight line 1 shows y=14X and the hatched range of the quadrilateral A, B, C, D is the screen photoreceptor of this present invention. |
