| 摘要 |
<p>PURPOSE:To eliminate the need of a focusing mechanism of an image forming element, and to prevent an external disturbance light from being made incident on the image forming element, by attaching a liquid crystal shutter array and an unmagnification linear image forming element to both faces of the same enclosure, and setting a distance of the shutter array and the image forming element to a prescribed value by a positioning member on the fitting surface of its enclosure. CONSTITUTION:A liquid crystal shutter array 11 of a liquid crystal shutter device is fixed and provided on the upper face of the enclosure 13, in a state that a face-like heater 12 for controlling a temperature is attached to the lower face of an optical write device 3. Also, an unmagnification linear image forming element 14 for bringing a transmission light of an array 11 to a photosensitive body 1 is fixed and provided on the lower face of the enclosure 13. In the center of this enclosure 13, a window 15 for leading the transmission light of the array 11 to the element 14 is pierced. Moreover, the upper face of the housing 13 is covered with a cover 16 from on the array 11, positioning brackets 22a, 23a are fixed and provided on the outside surface of the end part in the longitudinal direction of the enclosure 13, the distance of the array 11 and the element 14 is set to a prescribed value, and a dimension in the width direction of the enclosure for leading the transmission light of the array 11 to the element 14 is set smaller than a dimension in the transverse direction of the incident surface of the element 14.</p> |
