It’s about getting there and back again.
Picture Santa Claus covering the nation on Christmas Eve, but see every chimney as an ink-droplet address. See Rudolph rigged with aviator goggles and twin turbos.
In common terms, an address is a house or building number along a given street. Give a taxi driver an address, and he takes you to that location. The term is sometimes abstracted to include geographical locations, in degrees and minutes, that determine a longitude and latitude.
One nautical mile, for example, corresponds to a one-minute arc of the earth’s surface (latitude). At the equator, the earth turns 15° (longitude) every hour. Knowing this, and the vehicle speed, time traveled and the sun’s noontime height, a trained navigator can journey to any such described location on the planet.
For example, Las Vegas is at 36° 5" N latitude and 115° 10" ‘W longitude and Denver at 39° 45" N and 104° 52" W – a little math and hand-sketched vector reveals that a course of 76° northeast will take you from Las Vegas to Denver. Travel time depends upon speed.
It’s similar with a military-weapon system, except its GPS accuracy is down to 1/100ths of a minute.
Addressing for signmaking
Vector-based cutting plotters also use numerical address systems to map their cutting path. Vector-based cutting plotters don’t cut curves; they cut a series of straight lines that appear as curves.
In recent years, cutting-plotter software engineers have quietly, but dramatically, improved their product, especially with “intelligence” additions to their vector-tracking systems. Graphtec America Inc.’s (Irvine, CA) new CE5000-60 series cutting plotters, for example, feature auto-registration-mark detection and dual-axis, four-point skew control. In a sense, it’s an automatic navigation system.
Digital printers place their ink drops on addressed locations determined by the RIP, which picks up (and modifies) the initial address from the image source, a scan, photo file or Illustrator® drawing. Every ink drop has an address, which is why print speed becomes important on extra-large images.
“Addressability” was concocted, I think, by a clever marketer, to better define his or her product’s features. The term speaks of a machine’s dot-placement accuracy and somewhat describes a print machine’s ability to locate, relocate, or near-locate, an ink-drop’s address, depending on the program application. Addressability has no scale; thus, it’s truly subject to various interpretations.
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