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Continuous ink system in an HP Business Inkjet 1200n. The ink is transported from tanks through the black flexible band, which is vertically rigid so it does not fall into the path of the printhead and cause a jam. Close-up view of the above printer, showing the individual removable printheads and ink tanks for each color.
The offset process employs a flat (planographic) image carrier (plate) which is mounted on a press cylinder. The image to be printed obtains ink from ink rollers, while the non-printing area attracts an (acidic) film of water, keeping the non-image areas ink-free. Most offset presses use three cylinders: Plate, blanket, impression.
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