Tape for Pictures (Jul, 1958)
Tape for Pictures
ONE of the most ticklish aspects of the whole video tape operation is the manufacture of the tape itself. In these photos taken at the new ORRadio plant in Opelika, Ala., we can see some of the inspection steps used to insure perfect tape—which will “play back” a signal just about indistinguishable from a live telecast.
At the top, a technician checks a sample roll used to record the opening-day ceremonies at’ ORRadio on a new Ampex VR-1000 Videotape Recorder. Each inch of tape must carry about 20,000 bits of information.
Above, right, a machinist gauges the adjustment between the cutter blades used to shear a master roll of 1′-wide tape into smaller widths. To insure accuracy, the tape is not sliced. Rather, the blades scissor it into strips.
At right, the tape is being inspected for imperfections which might cause “drop out.” This phenomenon, which shows up as pips on a TV screen, may be caused by some flaw in the deposit of iron oxide on the magnetic tape.