| 摘要 |
<p>PURPOSE:To make the distance between light transmitter and CRT accurate and their optical axes coincide with each other by providing a depessor means which depresses the light transmitter to the CRT face plate on a holding member which clamps the condensing type light transmitter upwardly and downwardly in the direction orthogonal to the optical axis. CONSTITUTION:Light due to CRT 2 is focused by condensing type light transmitter 6 on the photoreceptor 1 charged by charger 3 to form electrostatic latent image thereon. The light transmitter 4 is clamped by a pair of holders 10,11 in the upward and downward directions orthogonal to the optical axis. The holders 10,11 are secured by screws 12,13 at the place where there is no influence on the light transmission of the light transmitter 4 such that the holders 10,12 are substantially integrally held. One end 14a on the top surface of the holder 10 is secured to one set of positioning member 14 protruded from one end 4a of the light transmitter 4. the one end 4a of the light transmitter 4 is depressed to the face plate 2a by sping 16 one end of which is engaged with the above positioning members 14,15.</p> |
