With the vigorous development of computer technology and network communication technology, the printing and publishing industry has undergone tremendous changes. The traditional printing process has been greatly affected. PDF (Portable File Format) has become a popular electronic file in recent years Format, you can use Adobe Acrobat Reader to view, browse and print PDF files. Adobe Acrobat 6.0 and PDF 1.5 are a technological step forward compared to Adobe Acrobat 4.0 and PDF 1.3, which were introduced in 1990, respectively. Today, PDF has become an irreplaceable file format for prepress and high-quality printing.
1. What is the pre-printing PDF before printing
Preflighting PDFs For Print (Preflighting PDFs For Print), borrowing the English word Preflighting, refers to the preflighting work carried out before the plane takes off to ensure the flight safety of the plane. Preflighting is used in the printing industry, which means pre-inspection work before printing. The pre-inspection before printing undoubtedly plays a vital role in the entire printing process.
As the printing industry continues to adopt new technologies, not only the color desktop publishing system (DTP) and computer direct plate-making system (CTP), but also various new technological processes are constantly emerging. In the face of a large number of new technologies, many experts in the electronic publishing industry predict that the final printer will only need to accept PDF files. Therefore, in the pre-printing pre-printing work, special emphasis is placed on the pre-printing PDF pre-checking. However, according to estimates by the American Printing Technology Foundation (GATF) and "Seybold" magazine, only 23% to 30% of all documents currently prepared for printing in the US are in Adobe PDF format. Over time, this number will continue to rise. The use of PDF file format in China is a matter of recent years, and it is mostly used for network transmission, mainly for the transmission of office files, online e-books, etc. The proportion of PDF used in the printing industry is relatively small.
2. Why use PDF before printing
Because the PDF generator and receiver are independent of the operating system platform in the printing production process, the PDF file format can retain all the information of the original file's characters, fonts, layout, color, etc. At the same time, it uses industry-standard compression algorithms to make Small capacity, easy to quickly store and transfer, with soft proofing function, easy to pre-check, file browsing is not limited by operating system, network environment, application version, etc. Therefore, the PDF file format will be quickly applied in various fields. However, in the printing industry, there are still many imperfections in generating PDF for printing, and the receiver sometimes receives errors when receiving the PDF of the customer. The most common problems with customer PDF files are that the font is not embedded, the resolution is too low, there is no bleeding, and the color space used by the user is not correct. In order to ensure that the whole process of pre-press and printing can be carried out smoothly, PDF as an inherent file format, it is very necessary to carry out pre-inspection.
Now, Acrobat 6.0 Professional, together with various PDF plug-ins and applications, allows us to establish a good workflow to accurately generate, pre-check and edit PDF documents. When linking good upstream and downstream prepress practices, successfully optimizing PDF files can achieve high-quality printing results.
3. PDF pre-inspection products
Many manufacturers provide products that can help users generate optimized PDFs, as well as manage, check, and modify PDF files. The following is a brief introduction to several softwares that can be used for PDF pre-checking or editing.
1. Adobe Arobat 6.0 Professional
The core of Acrobat 6.0 Professional's pre-inspection capability is placed in Callas Software's pdfInspektor2. Together with ICC feature files, it provides PDF / X-1a and PDF / X-3 generation and inspection. At the same time, in order to pre-check more than 400 standards in PDF, the settings (rules and conditions) of the characteristic files can be predefined. Users can define new characteristic files, or modify any existing characteristic files by adding, deleting or editing rules and conditions; they can also establish continuous batch processing and can import or export characteristic files. During the preflight, if a document priority conflicts with the rules or conditions stated in the selected characteristic file, they are listed in the preflight results and selectively reported. pdfInspektor2 also provides a quick glance at the detailed list of problems identified during the preflight. After the pre-check, a confirmation icon can be added to notify the prepress service staff and other users about the validity of the PDF document. The icon is embedded in the results of the preflight feature file and the preflight report, and a time icon is generated to allow the user to check whether the file was changed during the preflight.
When integrating workflow products, pdfInspektor2 can also generate reports based on the XML format; when used with AutoPilot, it can automatically use pdfInspektor2 Auto. Automation is also the name of the processing / prepress program in Callas software. This program provides a common server-based folder system for output centers and printers to automatically monitor and pre-check received PDFs and convert them into PDF / X format.
2. Apago PDF / X Checkup 3.0
PDF / X Checkup 3.0 is a plug-in for Adobe Acrobat, used to generate, pre-check and automatically edit PDF / X-1a and PDF / X-3 files. Version 3.0 adds several new features, including PDF / X Plus workflow check, and is compatible with Acrobat 6.0 and Mac OS X.
PDF / X Checkup 3.0 includes two additional plug-ins: ImageAlter and BoxEditor. ImageAlter allows users to modify the resolution, compress the image and change the image color of the PDF file. BoxEditor is a plug-in for quickly editing the bleeding and cutting boxes required by PDF / X. It has a library to store publication specifications at any time. When the user clicks the "Fix All" button, Checkup automatically corrects most errors to produce a correct PDF. / X file, it also adds any missing tags required by the PDF / X standard. In addition, Checkup can increase or modify the output intent, either using a registered name or an ICC feature file as the standard required by PDF / X. Checkup's Details window lists all errors or warnings found during the pre-check and stores the complete report in a text file. PDF / X Checkup can detect TrueType fonts, JPEG images, spot colors, image resolutions, etc.
3. ARTS PDF's ImageWorks 2.0 and Crackerjack 4.2
These two products provide some pre-inspection functions. Although they are not regarded as real pre-inspection products, they can be used as image editing and color separation tools respectively.
ARTS PDF's ImageWorks allows you to perform color transformation, image retouching, and image resampling, all without having to leave Acrobat. ARTS PDF's Crackerjack allows you to check PDF documents with or without embedded fonts, with options to correct, print or eliminate print jobs. ARTS PDF Print Suite Plus bundles these two products.
4. Creo's Synapse Prepare Pro 2.0
Synapse Prepare Pro 2.0 is a process tool for generating and pre-checking upstream PDFs (targeted for high-end users), allowing users to quickly generate PDF files and accurately match the technical specifications of specific printing environments. The specifications of these products provided by the printing press are given in the form of "instructions", and users can generate accurate PDF files from original applications such as QuarkXPress and Adobe InDesign. The PDF can also include pre-inspection information. The printer runs the PDF file of its customer through Synapse Prepare Pro, performs pre-inspection and generates a report. These reports are called login files and list general information, errors and warnings, as well as fonts, colors, images, etc. Some errors can be corrected automatically (such as RGB to CMYK), while some errors require the user to return to the original file for modification.
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2. Sustainable production: Sugarcane is a fast-growing crop that requires minimal water and fertilizer compared to other crops. Using bagasse pulp containers helps promote sustainable agriculture practices.
3. Heat resistance: Bagasse pulp containers have excellent heat resistance properties. They can withstand high temperatures without deforming or releasing harmful chemicals, making them suitable for hot food and beverages.
4. Versatility: Bagasse pulp containers come in various shapes and sizes, making them suitable for a wide range of food and beverage applications. They can be used for takeaway containers, plates, bowls, cups, and more.
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6. Sturdy and durable: Despite being lightweight, bagasse pulp containers are strong and durable. They can hold heavy or saucy foods without leaking or breaking, ensuring a reliable and secure packaging solution.
7. Microwavable and freezer-safe: Bagasse pulp containers are microwave and freezer-safe, making them convenient for reheating or storing leftovers.
8. Cost-effective: Bagasse pulp containers are cost-effective compared to other eco-friendly alternatives like compostable plastics. They are competitively priced and readily available in the market.
9. Positive brand image: Using bagasse pulp containers demonstrates a commitment to sustainability and environmental responsibility. This can enhance a brand's reputation and attract eco-conscious customers.
10. Regulatory compliance: Bagasse pulp containers meet food safety regulations and standards. They are FDA approved and do not contain any harmful chemicals or toxins that could leach into food or beverages.
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