Print is a variety of products printed, is the use of printing technology to produce a variety of finished products in general. In the daily life, people access to newspapers, books and magazines, maps, posters, advertisements, envelopes, letterheads, portfolio, trademarks, labels, business cards, invitations, banknotes, greeting cards, desk calendar, calendars, pictures, , Boxes, gift boxes, circuit boards, etc., everything, all belong to the scope of print. The printed matter is almost full of people's clothing, food, shelter, line of life, it is very close to people's lives