Figure 12-9.–Keyboard of a Noritsu Model 1001 print processor

Figure 12-9.–Keyboard of a Noritsu Model 1001 print processor. Minilabs have a microprocessor that stores information put in by a programmer. The information is retrieved through channels. The channels are programmed for different film manufacturers, ISOs, negative sizes, print sizes, and paper combinations. The various information combinations that are stored in these channels are used to print production negatives; for example, a 35mm Kodacolor negative to a 4x5 print is printed on one channel, and 35mm Fujicolor negative to a 5x7 print is printed on another. By programming different negative and print combinations into separate channels, you are able to produce production prints which have good density and color balance from the automatic printer. You can also fine-tune the density and color by using the keyboard. Color correcting on a minilab is less complicated than on an enlarger. The keyboard of the printer contains yellow, cyan, magenta, and density keys. These keys range in value so you can make minor or major adjustments. When the density of the print is off, density can be either added or subtracted. When a production print has too much cyan, yellow, or magenta, these colors are subtracted. When the print has too much red, green, or blue, the complement of these colors is added. 302.266 After the prints are exposed, the paper is fed automatically into the processing section of the minilab. The processing section contains chemical tanks and a dryer section. Each tank has a roller assembly rack that transports the print through the processor. Minilabs require no plumbing or drains because they use a washless process, such as KodakRA-4 chemistry. When Kodak RA-4 chemistry is used, the total processing time is completed in about 4 1/2 minutes. The setting up and programming of automated printers can be complicated. You are expected to be a printer operator only. Programming the channels, density, and color balance of automated printers should be left to the more experienced imaging facility personnel. While automated printers are very useful in controlling a high influx of production, there are disadvantages in their use. Not all imaging facilities have the space required to support automated printers. Cropping is very restricted, and dodging and burning cannot be performed. Like all machines, automated printers require maintenance. They also must be programmed accurately to function the way they are designed. Without the support and expertise of knowledgeable personnel, normal projection printing may be preferred. 12-17