Prepress design will help the successful completion of digital printing postpress processing. In digital printing, the quality of pre-press design has a great impact on post-press processing costs. Due to the limited paper specifications used in digital printing, and a large number of digital prints are single-sided printing, in addition to requiring the pre-press design of digital printing to make the most effective use of paper, the following factors should also be considered.
1. Paper thread direction
Where possible, try to make the direction of the paper strands consistent with the back of the finished book. Due to the particularity of the combination of the color material on the surface of the digital printing paper and the paper, if folded in the direction of the horizontal thread, the image is likely to break at the folded position. Therefore, the digital print should take into account the post-press processing technology when designing the pre-press.
2. Image position on the printed sheet
Usually, many digital prints design the image in the middle of the printed sheet, but only find out that it wastes a lot of time and money when doing post-press processing after printing. For example, if an image with a size of 6 inches by 9 inches is designed in the middle of a printed sheet with a size of 8.5 inches by 11 inches, the four sides of the printed sheet need to be cut when cutting; but if the image is placed on a certain For each corner (such as the upper left corner), you only need to cut both sides, which saves post-press processing time and reduces printing costs. However, if the other two sides of the image are bleeding designs, you still need to trim all four sides of the printed sheet.
The whole coffee beans are ground, also known as milling, to facilitate the brewing process.
The fineness of the grind strongly affects brewing. Brewing methods that expose coffee grounds to heated water for longer require a coarser grind than faster brewing methods. Beans that are too finely ground for the brewing method in which they are used will expose too much surface area to the heated water and produce a bitter, harsh, "over-extracted" taste. At the other extreme, an overly coarse grind will produce weak coffee unless more is used. Due to the importance of a grind's fineness, a uniform grind is highly desirable.
If a brewing method is used in which the time of exposure of the ground coffee to the heated water is adjustable, then a short brewing time can be used for finely ground coffee. This produces coffee of equal flavor yet uses less ground coffee. A blade grinder does not cause frictional heat buildup in the ground coffee unless used to grind very large amounts as in a commercial operation. A fine grind allows the most efficient extraction but coffee ground too finely will slow down filtration or screening.
Ground coffee deteriorates faster than roasted beans because of the greater surface area exposed to oxygen. Many coffee drinkers grind the beans themselves immediately before brewing.
Spent coffee grinds can be reused for hair care or skin care as well as in the garden. These can also be used as biodiesel fuel.
There are four methods of grinding coffee for brewing: burr-grinding, chopping, pounding, and roller grinding.
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