| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a printing device capable of exposing with a pixel shift or the like without complicating the constitution and without making the device large in size. SOLUTION: In the printing device for printing by projecting light emitted from a light source 1 on to a photographic printing paper 6 through an LCD (liquid crystal shutter) on which a picture is displayed, an angle variable prism 3 equipped with two light-transmissive substrates, transparent operating liquid held between the two light-transmissive substrates and a piezoactuator for controlling each angle of the two light-transmissive substrates is arranged on the optical path between the LCD 2 and the paper 6. And, by varying each angle of the two light-transmissive substrates, the optical path from the LCD 2 to the paper 6 is changed so as to execute the pixel shift.</p> |
