The solution to the color cast of the manuscript of the digital direct-injection printing machine

Usually in the production process of heat transfer paper, manyDigital Direct Printing MachineYou may encounter the problem of color cast of the original, which is also a problem that has plagued manufacturers for a long time. Today, Yunxiang helps you solve this problem, hoping to help more printing factories.

Question: What should I do if the original manuscript on thermal transfer paper is bluish and purple?

Answer: You can use color filters to correct. Scan the light yellow color filter with appropriate density together, and paste the color-shifted original and light yellow color filter on the scanning roller for scanning and color separation. If it is high-key, it may be yellowish. Choose white balance or high-profile The target method can be corrected.

PS: This method is more effective in correcting the color cast of the neutral and dark tones, but it should be noted that interference will occur when the color filter and the original are not real, such as Newton rings.

Question: The original has a color cast, and the color correction knob cannot be completely corrected after setting the high and low recording density?

Answer: It can be corrected by changing the level.T-shirt printerThat is to say, the depth of the center tone can be appropriately changed by the method of level proofing, so as to improve the problem of gray imbalance caused by the false color of the original manuscript. For example, if the original manuscript is bluish-purple, we must first determine the total height, middle and low parts of the original manuscript. The thermal transfer paper will find the ideal gray balance data according to the subsequent process, so as to improve the center tone of the blue plate to correct the deviation. Color problem.

PS: This method is suitable for landscape type manuscripts that tend to be blue, and portrait type manuscripts tend to be purple when backlit. For reddish originals, you can correct the color cast by brightening the center tone of the magenta version.

Question: What should I do if the color originals on the thermal transfer paper are in the gray balance of the high and middle tone, and the dark tone is also out of balance?

Answer: This situation can be corrected by removing the background color or gaining the background color. If you want to keep other color components unchanged, and only correct the color cast problem that is not dark, you can use the method of removing the background color to solve it. If it is a Chinese painting, you can use the method of background color gain to solve it.

PS:Digital printing equipmentIf the original dark tone appears reddish, you can use the method of removing the background color for the variety version to correct the color cast.