Computer To Plate Technology Pdf
The wavelength and energy of the laser diodes depend on the type of plate that is used. More of your questions answered by our Experts. Defects due to dust, scratches or other artifacts are minimized. In an internal drum image setter the plate is put into a cylinder, while the imaging head moves along the axis of the cylinder to expose the plate. In other projects Wikimedia Commons.
The construction type makes it more difficult to use several lasers at the same time, but just using one laser also has advantages such as uniform beam intensity over the whole plate imaging period. This process is similar to darkroom photography. This film is then used to make a printing plate, in a similar manner to a contact proof in darkroom photography. This opens up a lot of options for printing. At the offset print shop, the print supplier would then use a huge press camera to create negative images of the art boards and halftone negatives of the photographs on clear film.
The plate is wrapped around a drum that can rotate around its axis, while the imaging head that projects the image on the plate can move along this axis to focus the laser beam on the surface. What is Cloud Print and how is it used? Enterprise Platforms Printers.
The biggest advantage is removing the film generation and chemical usage layer.
How can security be both a project and process? This dramatically speeds up the printing process.
Printing Industry Exchange. The image is reproduced line by line on a fixed flat printing plate by a laser beam that is deflected by a rotating polygon mirror and then onto the printing plate. Home Dictionary Tags Enterprise Platforms. Artificial Intelligence and Machine Learning in Business.
It is widely used in the newspaper and magazine printing industry. From Wikipedia, the free encyclopedia.
Computer to plate technology eliminates defects in the plates caused by scratches in the emulsion and dust on the film, as well as defects from variations in film exposure and processing. In the s and beyond, the trend has been to omit the film altogether and produce the printing plate directly from computer-generated page-layout information, bypassing the film step entirely. Wikimedia Commons has media related to Computer to Plate. The two main light sources used to expose the plate are ultraviolet light lamps and laser diodes. Printing plates can even be burned in an unattended mode, usability testing pdf overnight.
This technology is mainly used in newspaper and magazine printing. Unfortunately, there are also a few disadvantages. This is a huge productivity gain over film-based workflows. The oxidation that accounts for ink drying with conventional inks releases toxins into the air. Forgot your username or password?
This yields rich, vibrant colors and crisp gloss coatings. The ink particles sit up on the surface of the paper rather than being absorbed into the paper fibers.
In case of laser diodes, the energy and wavelength depends upon the type of plates used in the system. The rotating mirror at the end of the imaging head rotates around its axis to beam the laser on the desired part of the fixed plate. Conventional printing inks dry through absorption into the paper substrate or evaporation into the atmosphere. Print production Printing terminology.
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