抄録
Though the digitization of pre-press process was popularized and it did and long, as a matter of fact, many of DTP and CEPS process were only the processes to make data on single page as for being digitizing it. Various CTP workflow systems are provided from pre-press vendors, as well. But, there are many subjects because an analog process must be digitized newly by the printing company, too. Imposition process, proofreading process, last minutes change correction process, plate making process are still full-analog processes themselves. The CTP workflow is to digitize these traditional processes. CTP workflow begins in the place to receive the page data completed with DTP and so on. It is important that the prediction of the output result can be done securely, and it is necessary that therefore each page is the data that it was independent. Using a predictable data format solves some problems. PostScript data received from the DTP process is translated predictable data format. But, there is a problem in being the standard, which several predictable data formats, are characteristic of. It is hoping that CTP manufacturers standardize each of their predictable data formats.
