A thin, printed finish; applied to guitars to look like more expensive wood. The "gravure" name comes from the rotogravure printing process. Early Talmans featured faux birdseye maple finishes on the neck and headstock. Some guitars also used the gravure finish on the top (and back) of the body to simulate the look of a high-end, figured wood texture like quilted maple. The gravure finish is very convincing. People not "in the know" will try to list vintage Talman guitars for sale at very high prices because they believe it's made from an exotic wood.
Ibanez chose to use this finish technique (along with other things) to keep the prices of their guitars competitive. You can learn more about that on the early Talman model pages: TC530, TV650, TV750
Other manufactures, besides Ibanez, used this same technique during the same era. The best known was Fender's Japanese made "Foto Flame" line of guitars. This Fender tradename is why you will sometimes find Talmans listed for sale with the term "photo flame" or "foto flame".