CHAPTER 8 



OFFICE EQUIPMENT 



The Aerographer's Mate throughout his career 

 will have a need to reproduce many different 

 types of weather charts, forecasts, and other perti- 

 nent data for local dissemination and intra- 

 office use. Various types of office equipment, 

 such as the Ditto, Xerox, and Ozalid machines, 

 are in use throughout NAVOCEANMET. The 

 equipment in use has improved product output 

 and saved valuable time. 



In this section the operation, maintenance, 

 and safety precautions of reproduction and local 

 dissemination equipment will be discussed. Many 

 models are in use today and it is beyond the 

 scope of this manual to discuss each model. 

 Most office equipment is delivered with operator 

 and maintenance manuals. Refer to these manuals 

 for the model in use at your office. 



REPRODUCTION EQUIPMENT 



Many different models of the Ditto, Xerox, 

 and Ozalid machines are in use, depending on 

 the needs of the weather office. The Ditto machine 

 requires the original material to be placed on 

 a special master so it can be reproduced. The 

 Xerox or Ozalid machines will reproduce any 

 clear original. 



DITTO MACHINES 



The Ditto machine is a spirit process dup- 

 licator. An advantage of the Ditto machine is its 

 compact size, while a disadvantage is the small 

 number of legible copies that can be reproduced 

 from the ditto master. In most weather offices, 

 the Ditto machine is used to reproduce the daily 

 forecast, watch bills, or other data when a limited 

 quantity is needed. Copies varying in size from 

 8 x 10 inches to 8 1/2 x 14 inches can be pro- 

 duced. 



Ditto Master 



The ditto master consists of a white typing 

 overlay that is attached to a sheet of thickly 

 coated carbon paper separated by a protection 

 sheet. Typing or stylus impressions cause the 

 carbon to be imprinted on the reverse side of 

 the overlay when the protection sheet has been 

 removed. Ditto masters can usually be obtained 

 in purple, red, green, yellow, black and blue 

 colors. By replacing the usual carbon back with 

 other colored carbons, the daily forecast can 

 be produced in multiple color. Purple is used 

 most often as the base color because it normally 

 produces a larger number of legible copies. 



Operation 



The ditto duplicating process is illustrated in 

 figure 8-1. Feed -wheel A pushes the blank paper 

 to feed rollers B and C. The fluid spray tube 

 distributes the fluid to the upper feed roller 

 B. Roller B moistens the paper while roller 

 C pushes the paper uniformly against roller 

 B and absorbs any excess fluid. The impression 

 roller D presses the moistened paper against 



FLUID MASTER 



FLUID 

 SPRAY TUBE 



FELT WICK \ 

 FEED-^^s ^ 



EELS**© Q® 



UPPER FEED 



(MOISTENING) 



ROLLER 



FEED TRAY 



LOWER FEED 

 ROLLER 



RECEIVING TRAY 



IMPRESSION 

 ROLLER 



129.41 

 Figure 8-1. — The Ditto fluid master duplicating 

 process. 



148 



