At present, the printing industry is facing increasingly fierce competition. In order to increase the weight in the market competition, printing companies continuously increase their investment in printing equipment, especially the increase and update of new prepress equipment. Coupled with the maturing of the CTP technology, CopyDot scanners (called dot copy scanners, roller-type dot-copy scanners, and flat-panel dot-copy scanners) have shown an irresistible charm. It quickly made up for the technical defects of the need for revision and revision of the layout, and became the forerunner of CTP technology, digital printing technology, and remote edition. In particular, with the continuous opening of the printing market, the purchase of dot-copy scanners is the key to maximizing corporate profits for Book Printing companies.
The role of CopyDot scanner
Broadly speaking, CopyDot dot-split copy scan technology is a technology for true reduction of manuscripts that have been linked to a web. It can use a sufficiently high resolution to reproduce the smallest dot on a linked web original, and dot loss can be negligible. , which can maximize the reproduction of the original.
Scanners with the "CopyDot" function scan text, lines, and images on film to generate corresponding data on the dots on the film. This mainly has the following effects:
(1) Convert the mesh color separation film into a digital file in a highly streamlined manner to reduce the use of foreign films, archived films, or reflections.
(2) The information on the film can be integrated into the imposition, grouping, and the entire digital workflow after data is processed. The problem of overprint due to the long preservation time, repeated use, or the large format of the film is solved. .
(3) The scanning software aligns the color separation film by moving or horizontally by automatically recognizing some details that the registration mark or the image separation film has at the same time, and the registration operation is automatically completed during the scanning process.
(4) Quality problems caused by yellowing of the film and scratches, creases, etc. can also be repaired by a dot-copy scanner.
The needs of book printing companies
At present, the advertising films of most newspapers, magazines, and DM publicity pages still occupy an incomplete position in the market. The manual collage and platemaking of advertising films has always restricted the publishing efficiency and long-distance transmission of newspapers and DMs. This requires that a large number of advertising films must be scanned and converted into electronic data, but at the same time it is often plagued by quality problems such as speed, format, accuracy, and film registration. The emergence of CopyDot dot-copy scanners gradually compensated for the above defects.
As a book printing company, in the face of large-volume books and films, it is ideal to select large-format CopyDot dot-scan printers for scanning. In particular, before the arrival of the spring and autumn seasons each year, major printing and printing companies will receive a lot of foreign editions (those that have already spelled out large-scale originals of the film) to print in this unit. The work to be done next after receiving such jobs can be roughly divided into the following situations.
(1) The foreign version and the unit print the same process. Take the original film directly to the printing process for printing after printing.
(2) The foreign edition is different from the printing process of the company. For example, the imposition scheme of the foreign edition is different from the printing process of the unit; the former printing press is different from the printing press used now; the folding way of the folding machine is different. At this time, using the first method definitely does not work, so remaking plate is an indispensable process step. At this time, if you use the CopyDot dot-copy scanner to re-plate, you will not only get twice the result with half the effort, but you will also be able to guarantee and improve the product quality and work efficiency, and at the same time, you can greatly shorten the production cycle.
(3) Some contents of foreign film need to be changed. Everyone knows that it is very difficult to make changes on files that have been added to the Internet. However, with the demand of the market, more and more short-lived jobs are needed, and some modification work must be done. It is more convenient to use the CopyDot dot-copy scanner to modify the parts that need to be changed. For example: the replacement of bar codes, the modification of texts, the repair of network lines, the revision of printing plates, and the replacement of color plates.
(4) Alien film is converted into digital document printed on a digital printer. If the original film original is to be reused, it must also be converted into a digital document by using a CopyDot dot-copy scanner.
(5) The film original and the electronic manuscript are put together for imposition. For example, a 16-page advertisement page has both original and electronic documents. To use it on a single page or on the same page, you need to use a CopyDot dot-copy scanner to convert film originals into electronic documents and then electronically. Use files together.
(6) It is necessary to change the original size of the foreign film. If the finished size of the film manuscript is 210mm x 291mm, the size requirement of the electronic manuscript for reusing this page is 213mm x 285mm. At this time, using the CopyDot scanner to make the ratio change not only guarantees the quality of the product, but also does not appear moire when the product is printed.
(7) It is necessary to remove the dots from the external film originals. Some textbooks and the cover of books and periodicals, due to the need to re-color, add copyright, add text, add and subtract network lines and some other operations, you need to turn the original into a standard TIFF image for normal editing.
To sum up: if a book printing company has already introduced a CopyDot dot-copy scanner and is proficient in mastering and using its various functions, it will be appreciated in the work: the use of a CopyDot dot-copy scanner not only ensures the product Production cycle and quality, but also can simplify the printing process in the production process, optimize the prepress and postpress work processes, so that in the continuous market competition can make the company do more work, do other people can not do the work, Doing things that others can not do, then increase the dominant position of enterprises in the market competition.
CopyDot scanner tips
The author used Creo company's Renaissance II - vertical roller dot copy scanner. There are some experiences in the actual production process, which is the use of CopyDot dot-copy scanners, which are summarized for your reference.
(1) Before scanning a document, test and calibrate it with a standard document in advance. It is the adjustment and calculation of the current environment and lens focal length. This step is very important.
(2) It is also important to maintain the cleanliness of the original film and rollers during daily use of the CopyDot dot copy scanner. Excessive dirt, band marks, and scratches on the original will affect the scanning quality of the original film, while increasing the workload of the back-end dirt removal personnel.
(3) The degree of reduction of the dots and the filtering condition of the moiré and the parameter setting before the scan are very important. Therefore, the resolution of the scanned manuscript is generally the same as the resolution of the output of the rear end illumination.
(4) The back-end RIP software determines the front-end scan. If the back-end RIP software has the option of using the file screening system, it is best to use it. If you do not set at least the RIP parameter, the dot shape must be the same as the original dot shape.
(5) Considering the factors of remote edition, general file storage cannot be too large. The resolution is generally set to 1200dpi (newspaper) or 2540dpi (hardback book).
(6) Regardless of whether the photocopying system or the CTP system, the curve adjustment of such files at the back-end RIP (netpoint restoration curve) is not very effective, so the adjustment curve should be completed in the CopyDot dot-copying scanner software to ensure the network points The exact reduction.
(7) Roller dot dot copy scanners do not work continuously. According to the design principle and the author's work experience scanners work continuously for more than 12 hours, it is prone to the phenomenon that the scanned dots are not true, and the more serious dots are broken like snowflakes. It is therefore recommended to pause the scan for a minimum of 2 to 3 hours in order to reduce the excessive temperature in the drum.
Of course, the CopyDot dot-copy scanner works with the Copydot Toolkit software and is even more powerful. The file formats they generate or export are supported by a wide variety of software on the market today. Such as TIFF, EPS, DCS1, DCS2M, DCS2S, PCC, EskoDDS, Handshake, PDF, SMD, AD, PSI and so on. There is a wide variety of software available on the market today.
