| 摘要 |
PURPOSE:To obtain stable liquid crystal and stable printing quality by performing control of liquid crystal display density and control of image density with one temperature sensor, by a method wherein the title printer is so constructed that ambient temperature of an arrangement part of a liquid crystal display and of an arrangement part of a photosensitive material are almost equalized. CONSTITUTION:A temperature sensor 3 detects a temperature in a liquid crystal display in which a liquid crystal display part 2 enclosed by a cover 5 is fixed to an operation panel 1, and sends the detected data to a liquid display control circuit 4 and a charge voltage generation circuit 7. Since the liquid crystal display is covered by a cover 5, a temperature increase characteristic around a photosensitive material is approached by regulating a size of the cover and a quantity of air flow. Since display density of a liquid crystal display is thickened as temperature rises a circuit 4 is so operated as to lower driving voltage according to increase of ambient temperature. Since surface charged voltage of the photosensitive material decreases as temperature increases, the charged voltage is increased with the circuit 7 according to increase of ambient temperature. When the surface of the photosensitive material 6 is charged with a specific electric charge, a liquid crystal display and a printing image density can be made constant. |
