The offset lithographic process was
first used in England around 1875.
How offset printing works
In offset printing the image to be printed is first transferred
(“offset”) from a drum to a rubber mat. After that the image is
transferred to the printing medium, most often paper. Sometimes offset
printing is used in partnership with the lithographic processes. This
process is based on the repulsion of water and oil and helps keep water
off the finished printing medium.
The benefits of offset printing include:
The ability to use a wide variety of printing medium. In addition to
paper offset printers can transfer images to metal, wood, cloth,
leather, etc. The use of the rubber mat that conforms to the printing
medium gives you a high quality image time after time. Fast and simple
fabrication of printing plates. Enhanced plate longevity due to the fact
that the plates do not come into contact with the printing medium.
The offset lithographic process was first used in England around 1875.
At first it was used to print on metal, with the offset cylinder covered
in a specially treated cardboard. The switch from cardboard to rubber
only took about five years, and rubber remains the most common material
used for the offset cylinder.
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