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Making Transparencies from Color Negatives
Figure 12-7B.Top view of Pako BC 24 roll paper printer

Photography (Basic) - Introduction to photography and other graphic techniques
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The  principles  of  making  color  positive  prints  from color transparencies are the same whether coupler development  or  dye  destruction  materials  are  used. Colored filters are used to alter the printing light to obtain proper color balance, much the same as is done in  printing  color  negatives. You must keep in mind, however, that you are working  with  color  positive  materials,  and  not  negative materials. The borders of these positive materials are black when unexposed. Dust particles and scratches also appear black. To make a test print lighter, you must increase the exposure. Dodging darkens selective areas of a print, and burning in lightens selective areas of a print. Color corrections are performed the same as the visual  appearance  requires. AUTOMATED   PRINTERS Many Navy imaging facilities have automated printers that print photographic negatives. Most can be used to print both black and white and color. When high-volume  production  is  routine  in  an  imaging facility, automated printers are an invaluable piece of equipment. There  are  many  types  of  automated  printers throughout the fleet. Some types hold long rolls of photographic paper that must be taken out and processed through a processor. Other more sophisticated types analyze, expose, cut, process, and dry the paper auto- matically. ROLL  PAPER  PRINTERS The roll paper printer is very popular on larger ships and shore stations that produce a large volume of color prints. The advantages of roll paper printers are they are operated  under  normal  room  lighting  conditions,  and they are very useful when a large number of the same size prints are needed from a single negative. When these printers are used, the correct density and color is accomplished   by   making   test   prints.   Once   the corrections and number of prints required are keyed into the  printer,  the  printer  makes  each  exposure  and advances  the  paper  automatically.  When  the  printing  is completed, the exposed roll of paper is removed and processed. After processing, the prints are then cut from the roll with a paper cutter. Roll paper printers have built-in analyzers. These analyzers  are  calibrated  using  standard  negatives.  When a production negative is printed, the machine refers to the memory and produces a print using the information stored from the standard negative. Generally, that produces  a  print  that  closely  represents  the  original PH1    Slaughenhaupt 302.263 Figure  12-7A.–Front  view  of  Pako  BC  24  roll  paper  printer. scene; however, test prints are still made to produce the highest  quality  prints  possible.  The  most  popular  roll paper printer used in Navy imaging facilities is the Pako BC 24 (fig. 12-7A and fig. 12-7B). MINILAB  SYSTEMS Minilab systems (fig. 12-8) have become very popular  in  Navy  imaging  shore  facilities  and  aircraft carriers. These types of printers are fast and can be used to  rush  production.  In  these  systems,  the  printer  and processor  are  combined  into  one  unit.  The  printer  cuts the  paper  to  size,  exposes  it,  and  automatically  feeds  it through  the  processor.  Minilabs  (as  they  are  called)  are used in all of the “One Hour” photo-finishing shops that you see today. The operation of a minilab is very easy once you become familiar with the system. Minilabs can be operated  under  normal  room  lighting  conditions.  The printer  is  controlled  by  a  keyboard  (fig.  12-9).  Some systems  have  zoom  enlarging  lenses  to  alter  the  image size.  The  negative  can  be  aligned  and  composed  by adjusting  the  negative  carrier.  These  adjustments  to  the image size and cropping can be seen on a viewing screen. 12-15







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