Digital Printing Three Of The Most Important Design Element - Digital Printing, Color Mixing,

Editor's note: color mixing, Vignette and the gradient (when we put one color and

another color when mixed together, they actually refer to the same concept) is the digital printing process we often encounter three problem.

Because people can easily create a drawing and publishing software, color mixing, such as virtual light gradient effect, they get a lot of applications, and we can see in a lot of publishing on the mixing error is one example.

When they are displayed on the screen, they look very normal?? Other elements are true. However, due to resolution digital press restrictions, it is more suitable for printing ribbon manuscript.

If you want a virtual photon as a raster image to use, then open the image in Photoshop to a certain extent, reduce the compartmentalization of (chunking, is a clear difference in color blocks, rather than a color or ladder effect relationship between the smooth transition.) phenomenon, in addition, you can choose "Add variegated" filter, which is our most common solutions.

1, learn to calculate a given order of Adjustment will appear in the replication process of chunking phenomenon.

2, with a device divided by the output device resolution, line screens, you calculate the number of colors it can create (or gray level).

3, with the value derived above to calculate a given tone color within the scope of the actual number.

If the size of each ribbon is 0.05 inches / 0.12 centimeters, or smaller, then the difference between different ribbon is not clear, the basic can form a smooth transition.

Example, in a resolution of 600dpi and screening lines to 85 lines Screen, you can get 49 gray levels (N = 600/85). If the gradient of a color from the color blocks 20% of the transition to 75%, then the fractional difference between them is 26.95 ((49) x (0.75? 0.20)). If the gradient color block length is 5 inches, then the width of each ribbon is 0.18 (5/26.95) inch?? Image will be very obvious phenomenon of compartmentalization.

Recommendation: Although this is not a constant formula, but it is useful to you. If you come to the ribbon is smaller than 0.05 inches, then you can get a perfect image. Currently, most digital printers are used in the second generation of stochastic screening technology, can greatly reduce the people's calculations. But no matter under what circumstances, by printing proofs to check the problem is a relatively safe way.

Toner coverage In normal circumstances, the toner in the sheet of paper within a given region does not exceed 320% of total coverage, which means after printing four colors overprint the total can not exceed 320% toner coverage.

From a technical point of view, we can let each primary color toners are 100% coverage, but this effect will be printed is not ideal.

Suggestions: 1, toner coverage under the restrictions, where you can go to the Photoshop CMYK settings to create a new parameter, and "the total toner coverage," the maximum value set to 320%.

In addition, you can use the default settings will be reduced dot gain 10%. Of course, maybe you can expand the amount will be reduced to a lower network level, but you must be an image for each test to ensure that you are going to use the printer will not be the phenomenon of optical gain.

2, if you set Photoshop's CMYK SWOP using the default parameters, so your image looks like the original it would not have impact, but unfortunately, in addition to the default settings other than the majority of designers and printing never used the other crew. We should take the time to try other and with the printing parameters?? And even the equipment manufacturers?? To maintain contact in order to find the best value.

Dot gain Dot (sometimes referred to as tone value increase) is an offset printing press on the common problem, and it is caused by many factors?? The spread of ink on paper, imaging network in the traditional process of printing plate expansion and printing excessive pressure and so on.

Toner printer, of course do not have those problems, but the dry toner easily dispersed, after the liquid toner will be transferred to the paper before distribution to the drum so that the figures printed in the dot gain phenomenon was lighter than the offset more.

Recommendation: Ask your printing service provider to see if you need to change the image from RGB to CMYK space, toner coverage on network expansion and adjustment. Remember that when you are drawing and publishing software to create images of the time, you should take into account the issue of toner coverage.

Silk paper and paper direction lock

Paper wire lock depends on the direction of the paper manufacturing process. As the pulp will be a conveyor belt with the paper machine and exercise, so most of the paper fibers are consistent with the direction of the conveyor belt, which then form the direction of what we call the wire lock.

Fold: when we carry out regular card or business card when folded, the paper can easily see the importance of the direction of the wire lock.

Through observation, we can find: and wire lock perpendicular to the crease looks rough, but with the wire lock is in the same direction of the crease looks flattened. Direction along the wire lock on the living conditions for folding is the printing has always been the goal, but sometimes they will give up this idea, because the direction along the wire lock cut live parts may cause a lot of waste, or increase the living conditions processing difficulty.

Recommendation: If you have to lock the appliance against the direction of the live pieces of silk were folded, it is necessary to ensure high-quality paper using a printing plant, the only way to avoid the appearance of rough edges.

In the use of dry toner to print out the page printer may also cracks in the crease Department, press the crease to help avoid this problem from occurring, but the best solution is to take into account when designing folding problem, where folding is needed to avoid using a lot of ink.

Paper expansion Another direction with the paper issues related to wire lock is that it surprisingly hydrophilic. With the increase of air humidity, the paper fibers will swell, and its size can be increased up to the original four or five times.

If the dry conditions upstream along the

by: gaga

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