Web offset printing is one of the most popular forms of printing that is used in bulk print works like newspaper, magazines, catalogs and brochures. With the rapid development of web offset printing and its popularity among those, who have to print a lot of materials at a good level and in no time, this method is mostly used. This article delves into web offset printing, its main features, advantages and fields of use.
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What Is Web Offset Printing?
Web Offset is a method of printing in which large rolls of paper (called webs) are put into the machine to get the print out. It should also be noted that in web offset instead of using cut sheets which are more beneficial, the whole paper is in a roll which is only cut at the end of printing. The method used in this process is to apply ink from metal plates to a rubber blanket and use the blanket to impress the ink on paper. This way is more effective because it helps to avert messy and blurry reproduction of images.
Types of Web Offset Printing
The two cold-set and heat-set are the major types of web offset printing that are observed in practice.
• Cold-Set Web Offset Printing: In this method, the ink dries through absorption in the paper. Cold-set is used mostly in newspaper printing and is therefore appropriate to lower quality papers that do not need to be glammed up.
• Heat-Set Web Offset Printing: In heat-set printing, there is an advantage where the ink is dried by using the heat of an oven because it dries quickly and one is able to print on coated papers and glossy papers. This type is usually employed in magazines, brochures and catalogs, which require high quality images and colorful features.
Benefits of Web Offset Printing
Cost-Efficiency for High-Volume Projects In web offset printing, as the size of the project gets bigger, it becomes cheaper. This is because it is used for printing in large amounts, and the per copy price reduces as the number of copies goes up making it ideal for companies with big printing requirements like direct mail order prints, magazines and bulk brochures.
High Speed and Efficiency One characteristic that stands out about web offset printing is its essential characteristics is speed. In a sheet fed presses system, one will be amazed by how slow the rate of printing is relative to the roll-fed system, which is constant and enables businesses to get their work done in a short period of time and also produce large quantities of work.
Uniform and High-Quality Output The quality of printing in the offset method is evenly maintained over extensive runs of prints. Rubber blanket makes the process of ink layering precise enhancing the image quality even with baser grade paper. In heat-set web offset printing, pictures especially images come out sharp and colorful with very high saturation levels.
Diverse Fields of Use It is this technology that is used in production of all kinds of paper and plastic materials, irrespective of their shape or format. From newspapers and brochures to valuabled inserts and flyers, it is a convenient printing technique for different kinds of format and style.
Less Paper Wastage Paper web presses are constant in using paper rolls as opposed to feeding sheets hence more wastage is avoided. In addition, new web offset machines incorporate advanced technologies that enhance efficiency of paper use.
Limitations of Web Offset Printing
Web offset printing no doubt has many benefits nad even with this printing specifics is not the most economical in a scale down type project. In cases of small print runs, the costs incurred to set up and longer prepress can hardly be regained hence other printing technologies like digital may come in handy for small volumes.
Furthermore, the selection of poor quality paper in cold-set web offset printing can be a limiting factor of the image quality that is why heat-set printing is more appropriate for works that require premium finishes and a greater clarity of the image.
Uses of Web Offset Printing
Newspapers: Cold-set web-offset is best suited for general editions because it allows printing in short runs of quick turnovers required for daily newspapers.
Magazines: The heat-set web-offset method is predominantly used in the production of magazines since it results in high-quality images, colors and shiny papers.
Catalogs and Brochures: Industries prefer web offset printing to print catalogs and brochures because of its combination of speed and quality making it less costly to disseminate in-depth information and lists of products.
Advertising Inserts and Flyers: Web offset printing is also employed in the production of advertising inserts and flyers for mass mailing where cost and high volume are required.