能产生照片一样的质量而且图像色调连续变化的几种激光数字图像记录器最近已在市场出现。当复制数字化照片或其他图画时,该系统可在1分钟内产生8×10英寸,具有256个灰度标色调的图像。利用照相媒质,即一种类似普通照相底片的光敏干银盐可达到这一速度。然而,这时图像的处理是利用记录器中干燥加热而不是化学溶液的方法。被调制的扫描He-Ne激光束使媒质曝光,以产生受储存媒质中像素所支配的图像。 Several laser digital image recorders, which produce photo-like quality with continuously varying color tones, have recently appeared on the market. When copying digitized photos or other pictures, the system produces an 8 × 10-inch, 256-grayscale image in 1 minute. This speed is achieved using photographic media, a photosensitive dry silver salt similar to ordinary photographic film. However, in this case, the image processing is a method that uses drying in the recorder instead of a chemical solution. The modulated scanning He-Ne laser beam exposes the medium to produce an image that is dominated by the pixels in the storage medium.