Lettering Aids, ContinuedPhotoletteringPhotomechanical lettering devices use the principles of photography todevicesproduce uniform letters. Most photolettering machines control font selection,letter size, line length, letter density, word, line, and letter spacing, typeposition, and leading. Some devices produce display as well as body type.The output of photolettering devices is strips or pages of black letters onwhite paper or film.Computer-generatedlettersLetters produced by computers are uniform and dense when printed withlaserjet printers. Letters produced on dot matrix printers are not suitable asfinished lettering. You may compose the layout of the finished product onthe computer screen, or you may cut and paste the letters together later.Difficulty arises when your requirements exceed the capability of thesoftware in the computer. Remember, the definition of point size in theprinting industry is very different from the definition of point size in thecomputer arena. Computers may also refer to letter size in pixels. Bothpoints and pixels in the computer language are much smaller and do notequate to the printing industry definition.Figure 5-56 illustrates the great difference between a 72-point letter and acomputer version of a 72-pixel/point letter.Figure 5-56.—The difference between a 72 pixel/point letter and a72 point letter.Continued on next page5-52
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