All Write Media
23 Marino Crescent
Clontarf, Dublin 3
01 -833 6472    info@allwritemedia.com

All Write Media
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Screen Printing

A screen is made of a piece of porous, finely woven fabric (originally silk, but typically made of polyester or nylon) stretched over an aluminum frame. Areas of the screen are blocked off with a non-permeable material—a stencil—which is a positive of the image to be printed; that is, the open spaces are where the ink will appear.

The screen is placed on top of the disc. Ink is placed on top of the screen, and a rubber blade(squeegee) is used to push the ink evenly into the screen openings and onto the disc. The ink passes through the open spaces in the screen onto disc below; the screen is lifted away and then the squeegee is pushed back across the screen, with the screen lifted, "flooding" the ink into the screen. The screen can be re-used after cleaning. If more than one colour is being printed on the same surface, the ink is allowed to dry and then the process is repeated with another screen and different colour of ink.

The vast majority of silk-screen printings are used for a design without full colour.

Litho Printing

Litho printing is a widely 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 film of water, keeping the non-printing areas ink-free.

Offset printing is mainly used for more complicated designs where the images need to be very clearly defined, the advantage of offset printing is that the different images in the design will be separated and not run together.

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All Write Media Ltd - 23 Marino Crescent - Clontarf - Dublin 3. Tel:+ 353 (0)1 833 6472 - Fax:+ 353 (0)1 833 6472    Copyright ©2008 AllWriteMedia | Site Map |