Printing is a method of reproducing texts or illustrations using a movable type and a pressure-sensitive ink. It has long been the primary method of communication, though it has been challenged by modern audiovisual media. Printing has given rise to the radio, television, film, and tape recording, and has helped to shape the world we live in today. It has also inspired other techniques, such as textiles, wallpaper, and miniature electronic circuitry.
Printed matter may contain instructions or directions, or it may be used as a promotional product. In addition to books, many forms of printed matter may be used for advertising. Some of these items are printed on a particular paper size, while Keluaran Hk others use a larger format. For example, personal stationery often utilizes a seven-by-10-inch paper. However, if the paper is not positioned correctly, the ink may be absorbed unevenly, causing an unsightly pattern or “sinkage.” This mottled image is called mealy, and it may be difficult to remove.
Inkjet printers, which use replaceable cartridges, can produce color images on white paper. Three of the inks used are cyan, magenta, and yellow. Black ink is the fourth ink used for printing. Full-color printing is also called four-color process, or CMYK, and can be more costly than black-and-white printing.