| 摘要 |
PURPOSE:To easily alter the quantity of light going into a photosensitive body without changing the quantity of light from a lamp by providing a movable filter outside a printer optical path. CONSTITUTION:The movable filter 20 is arranged right above a projecting lens 2 to take in and out of the printer optical path, and a cleaning member 25 is fitted to the lower outer periphery. The filter 20 is inserted into a ring 21 formed on one end of a lever 22, which has an operational knob 23 on the other end and is turnably supported by a supporting shaft 24 in parallel with an optical axis in the direction of an arrow. By taking the filter 20 in and out of the printer optical path, the reader/printer can cope with a change in film density. While the quantity of light from the lamp can be kept constant, light quantity can be adjusted. |
