How Does Offset Lithography Printing Work?


How Does Offset Lithographic Printing Work? This is a tutorial video explaining the offset lithographic printing process. If you need offset printing services done for you , check out Offset Printing NYC | New York Print Services & Company - VSLPrint

Video Transcript

How does offset lithography printing work? Let's start off with what the customer applies us with. A PDF file of what they want to print. In this instance we have a two full-color poster. We didn't take this poster and split it up into the primary colors which are cyan. You can see the blue color and magenta which is a pinkish color yellow. These four colors are printed on top of each other which produces a full-color image. We then take these four separate images and use a machine called a plate sitter to bring these images onto aluminium plates. These aluminum plates have very sensitive cutting that attracts ink. The center burns away over non image areas leaving another image areas to reach the ink that will stick. Yeah you can see the image plate leaving the plate setter. You can see a light image on the plate now so this is ready for the press. Yeah you can see the plate being inserted into place. The plate goes around the cylinder, holding the plate cylinder. We'll talk about a bit later on the four-color place that will have a minimum of four printing units unit for each of the primary colors. A unit for cyan magenta yellow and black. It can also have more than four units for specialized colors though. It can have four extra units to print full color on both sides so you can see our X or 105 art of the printing in place. You can see the units here on the side each unit will print in a separate color onto the paper. At the back of her place is the paper loading unit you can see a stack of IPR ready to be printed. Each printing press unit contains three main cylinders. The plate salami or blanket cylinder and the impression cylinder in this image. We are looking at the sign press unit first. The tsiyon plate is clamped around the plate cylinder as the cylinder start turning. Ink is applied to the plate cylinder. This ink is then transferred to the blanket cylinder and then the blanket cylinder transfers this image to the paper when the paper passes between the blanket cylinder. The impression cylinder where the offset printing comes from the fact that the plate cylinder does not come directly onto the paper. The image force gets transferred onto the blanket cylinder which is then murdered and then gets passed onto the paper. This produces a right reading image. Again the sheet of paper through all four units in the printing place and all four primary colors are printed on top of each other. The cyan the magenta here the yellow and the black to produce the full color in the image and this is your final product This is a basic tutorial on how offset lithography printing works we hope you enjoyed the video and they'll be more Soon thank you for the support bye For more information and services, visit VSL Print  at Varick Street Litho | 121 Varick Street New York, NY 1001     Check This Page