Poster and Banner Printing. Posters and signs are a classic form of marketing, for both indoor and outdoor promotions. Posters can be framed or unframed to display on bulletin boards, walls or in windows. Poster Printing is a process where a print image is applied to a large sheet of paper. It is easy and inexpensive to find poster printing services, yet it’s essential to research beforehand to get the best possible quality. A poster is a sign which is purely decorative and has no advertising or informative function. This difference affects the way the decoration is used, its format and its content.Usually large printed sheet that often contains pictures and is posted in a public place (as to promote something)