Bleed - in printing, an image that extends off the edge of the page or envelope. Envelopes with bleed generally must be printed before they are folded, since the fold line runs through the printed image. Bond - grade of writing or printing papers, often used for letterheads and matching envelopes. Characterized by strength, rigidity, relatively low opacity and erasability. Grain - direction in which most of the fibers lie in a finished sheet of paper.
Paper folds more easily with the grain.
It offers greater resistance to being torn across its grain and demonstrates greater tensile strength in the direction of the grain. Lip - unscored, extended flap on some open side envelopes, such as those used for filing. Printing - the choice of a printing process depends upon the size of the run, the complexity and quality of the camera ready art, the number of ink colors, the paper stock and the level of quality desired. Dry offset - similar to wet offset, but requires a coarser screen,normally 100 to 120 lines per inch. Uses a printing plate with a raised surface.