Printing Presses

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The stack press is characterized by one or more stacks of printing stations arranged vertically on either side of the press frame. Each stack has its own plate cylinder which prints one color of a multicolor impression. All stations are driven from a common gear train. Stack presses are easy to set up and can print both sides of the web in one pass. They can be integrated with winders, unwinders, cutters, creasers, and coating equipment. They are very popular in milk carton printing. A drawback of stack presses is their poor registration — the image position on every printed sheet is not as consistent as in many other product label printing processes.


Central impression cylinder (CIC), like the common impression rotary letterpress, uses a single impression cylinder mounted in the press frame. Two to eight color printing stations surround the central impression cylinder. Each station consists of an ink pan, fountain roller, anilox roll, doctor blade, and plate cylinder. As the web enters the press it comes into contact with the impression cylinder and remains in contact until it leaves the press. The result is precise registration which allows CIC presses to produce very good color impressions. CIC presses are used extensively in label printing services for flexible films.


In-Line flexography printing is similar to a unit type rotary press or the stacked press except the printing stations are arranged in a horizontal line. They are all driven by a common line shaft and may be coupled to folders, cutters, and other post-press equipment. These presses are used in label printing services for printing bags, corrugated board, folding boxes, and similar products.


Commercial publication flexographic presses are compact, high-speed presses with wide web capabilities that utilize dedicated four-, five-, or six-color units. Typically, two four-color units are paired in one press to allow printing on both sides of the web. Publication flexographic presses generally incorporate infrared dryers to ensure drying of the waterborne ink after each side of the web is printed (Buonicore).

To learn more about which type of printing press should be used for your needs, contact us at Impression Label — we're happy to help!

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Whether you’re interested in learning more about the flexography printing process, or you’re ready to place an order, Impression Label is here to help. Contact our printing company today to inquire about your next printing project.