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Computer-to-Plate
In the Computer-to-Plate or CTP process the image of the page from a digital file is recorded directly from the file to the printing plate instead of creating film and making the plate from the film. Although CTP is a printing process, in order to insure the best possible output it is important that the designer discuss CTP with their printer. The printer's familiarity with the process, their equipment, the type of plates, and file format and preparation all play a role in the success of the computer-to-plate process.
12 Steps to Successful CTP Output (PDF)
Extracted from the Prepress Production Guidelines, this PDF from Moore Wallace Publication and Directory Group describes some do's and don'ts for getting a file printed using CTP. While most of these items may be common file preparation tips for any kind of printing, they are especially important in the CTP workflow.
CTP 101
American Printer article, written for the print industry, includes descriptions of the various plates used in CTP.
Direct to Plate Process
In the Desktop Publishing forum, this message describes what CtP is and whether there is a difference in the types of color jobs that would use direct to plate.
Discussion of Computer-to-Plate
From 1996, this Electronic Exchange article includes a little history of the process and some of the advantages of CTP for both the printer and the designer/customer.
Endangered Species: The state of the imagesetter
Back in 1999 Scott Bury addressed the issue of how the emerging CTP technology was affecting imagesetters.
Fine Print (PDF)
Within this PDF newsletter by Courier Corporation are tips on CTP proofs, PDF & CTP, and other file preparation advice.
First Generation, Cheaper
ColourSat describes some of the advantages of CTP and mentions a few things you might need to do differently in preparing your files.
Prepress Production Guidelines (PDF)
An excellent tutorial by Moore Wallace Publication and Directory Group on preparing files for computer-to-plate printing. Includes "12 Steps to Successful CTP Output," page layout guidelines, and a glossary.