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Offset Printing / Dry Offset

Offset printing is a commonly used printing technique where the inked image is transferred (or "offset") from a plate to a rubber blanket, then to the printing surface. When used in combination with the lithographic process (which is based on the repulsion of oil and water) the offset technique employs a flat (planographic) image carrier on which the image to be printed obtains ink from ink rollers, while the non-printing area attracts a water-based film (called "fountain solution"), keeping the non-printing areas ink-free.

Wet Offset

A wet offset printing technique has a top layer containing a photocatalytically and thermally modifiable material. The material can be brought photocatalytically into a hydrophilic state by irradiation with light and into a lipophilic state by heating. The hydrophilic state forms a surface that can be illustrated and the lipophilic state forms an illustrated surface. The top layer of the wet offset printing technique may contain absorption centers for irradiation, especially for laser irradiation in the NIR range, with which the heating of the top layer in the pattern of an image is brought about.

Dry Offset

Dry offset printing process combines the characteristics of letterpress and offset. A special plate prints directly onto the blanket of an offset press, and the blanket then offsets the image onto the paper. The process is called dry offset because the plate is not dampened as it would be in the wet offset lithography process.

offset     Ink and pantone     Heidelberg    

Need ideas or pricing for your offset, letterpress, engraving, digital, electronic, or screen printing?
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