| 水墨印刷机的操作技巧 |
| 添加时间：2017/9/14 16:57:56 浏览次数： |
| 一、制版 I. plate making A、设计 A, design 使用树脂版要得到高品质的印刷品必须要有优秀的设计稿和高品质的菲林片。好的设计稿是高品质印刷品的根本，以确保好的再现性，设计时应注意： In order to obtain high quality printed matter, the resin version must have excellent design draft and high quality film. Good design draft is the foundation of high quality printing, to ensure good reproducibility, attention should be paid to the design: 1．如果采用照相制版，所制作的墨稿中所有的线条、文字要墨度一致，否则会导致不必要的照相修正和手工修饰才能制出满意的菲林片。 1., if the use of photographic plate making, all the ink lines in the ink will be consistent, otherwise it will lead to unnecessary photographic correction and manual modification to produce a satisfactory film. 2．在满足客户要求的情况下，尽量使阳字笔划变细，阴字笔划变粗，这样就加大了笔划之间间隔，不容易造成印刷糊版。 2., in the case of meeting customer requirements, as far as possible to make the Yang word stroke thinning, Yin word stroke thickening, thus increasing the interval between stroke, not easy to cause printing paste version. 3．尽可能避免网点和大面积色块图案在同一块版上印刷，如果大面积色块图案和细线条图案分开单独版印刷，压力调整和颜色控制要简单得多。 3., as far as possible to avoid dot and large area of color patterns in the same block printing, and if the large area of color patterns and fine line patterns separate version printing, pressure adjustment and color control is much simpler. 4．如果在一种颜色内部套印另外颜色，并且颜色之间要求不留空隙，设计时就要考虑印刷机的精度，使两种颜色的版面进行叠加印刷，叠加部分的宽度为印刷机的印刷偏差。 4. if in a different color and internal color overprint, requires no gap between the color, the design must be considered when printing machine precision, the two color layout superimposition printing, superimposed partial printing machine for printing width deviation. 5．设计稿必须考虑树脂版的延伸率。制版时，版不会发生收缩和伸长，而当版装到印版辊上时，在绕版辊的方向版会延伸，而树脂版延伸率是可以计算的：树脂版延伸率=版辊+双面胶带和衬垫厚度÷（版辊+双面胶带厚度+树脂版版厚）×10% 5. design drawings shall consider the elongation of the resin plates. Seihan, version will not shrink and elongate, and when the version fitted to the printing plate roll on roll around, extending in the direction will, and the resin version of elongation can be calculated: resin version elongation roll = + double-sided tape and liner thickness, roll tape thickness (+ + resin version thick version) * 10% 设计时要求的实际尺寸乘以树脂版延伸率就是设计稿的尺寸。 The actual size required by the design multiplied by the resin plate elongation is the size of the design draft. B、菲林片 B, film 高品质的菲林片对树脂版制作很关键，对所用的菲林都要作细致的检查： High quality film is critical to the manufacture of resin plates and a careful examination of the film used: 1．透光区密度要小于0.05，这样能保证菲林片符合制版要求，有结实的细微图案和清晰的阴字 1., the density of light transmission area is less than 0.05, so that the film can meet the requirements of plate making, with strong fine patterns and clear Yin characters 2．不透光区密度要大于4.0，太低的密度会导致图纹不够深或出现不应有的图案。 2. the opacity density is greater than 4, too low density will cause the pattern is not deep enough or the design should not be proper. 3．菲林片要有正确的图案方向，即药膜向上时为正图文，这一点很重要，这样可保证制版时菲林片与版材表面良好接触 The 3. film must have the correct direction of the membrane to the pattern, when the positive image, this point is very important, which can ensure the plate making film and plate surface contact 4.菲林片要清洁，无污点，无折皱。否则图案部分的折皱会反映到版上，握住菲林片对角线方向可以减少折皱的产生。 4. film should be clean, free of stains and wrinkle free. Otherwise, the wrinkle in the pattern will be reflected on the plate, and the diagonal direction of the film can be reduced to reduce the crease. 5.加网线数一定不要高于网纹辊网线数，通常加网线数应为网纹辊线数的1/3左右，否则极易糊版；注意加网角度，由于水墨印刷采用网纹辊传墨，而网纹辊的着墨孔是以一定角度进行雕刻的，很容易与加网角度发生干涉而产生“龟纹”，因此，在制版时要注意避免龟纹。由于大部分网纹辊通常以45°角雕刻着墨孔，因此，加网角度应尽量避开45°，一般为Y90°、M15°、K30°、C60°，或者Y82.5°、M67.5°、BK37.5°、C97.5°。目前有很多新型网纹辊着墨孔的雕刻角度已不采用45°，而采用60°或其他角度进行雕刻，这对避免龟纹非常有利。 5. screen line number must not be higher than the number of roller cable, usually with line number for the number of roller line about 1/3, otherwise easy to paste version; attention and network point, because the ink printing ink roller, inking roller and the hole is carved with a certain angle, and it is easy to add network interference and moire "", therefore, in seihan to avoid moire. Because most of the roller is usually at 45 degrees angle carving inking hole, therefore, should try to avoid the screen angle 45 degrees, generally Y90 degrees, M15 degrees, K30 degrees, C60 degrees, Y82.5 degrees, or M67.5 degrees, BK37.5 degrees, C97.5 degrees. There are a lot of new type roller inking hole carved angle has not used by 45 degrees, 60 degrees or other aspects of sculpture, this is very advantageous to avoid moire. D、制版 D, plate making 设计稿考贝或照相成菲林片后即可进行制版，其主要分背曝光、主曝光、冲洗、干燥、去粘和后处理六个步骤。在实际操作过程中，应特别注意以下几方面的问题： Design draft copy or photograph into the film after the plate, which mainly consists of back exposure, exposure, washing, drying, sticking to and postprocessing steps six. In the actual operation process, should pay special attention to the following aspects of the problem: 1．通过背曝光可建立版的基层以便得到所需的浮雕和加强聚酯支撑膜和感光树脂层的粘附力。正确的背曝光从聚酯支撑膜方向曝光，能在冲洗过程中保护版的细微图案，并阻止浮雕倒塌。 1., the base of the print can be created by back exposure to obtain the desired relief and strengthen the adhesion force of the polyester support film and the photosensitive resin layer. The correct back exposure is exposed from the polyester support film to protect the fine pattern of the plate during the wash and prevent the relief from collapsing. 2．背曝光后应立即进行主曝光，因为感光活性会逐渐消失，从而造成较长的主曝光时间和较差的曝光宽容度。 2. exposure should be made immediately after the main exposure, because the photosensitive activity will gradually disappear, resulting in longer main exposure time and poor exposure latitude. 3.当树脂版的保证层撕掉时，版的感光速度迅速衰减，应立即将菲林片置于版材上或在10分钟之内进行主曝光以便得到最佳的效果。 3. when the resin version of the guarantee layer is torn off, the speed of the plate is rapidly attenuated. The film shall be placed on the plate immediately or within 10 minutes for the main exposure so as to achieve the best results. 4.主曝光时间可通过主曝光测试来确定，感光的树脂通过聚合反应变成不溶性，印版可以再现菲林片上的细微图案。在进行主曝光前要手擦真空膜排出空气以便版与负片密合。 4., the main exposure time can be determined by the exposure test. The photosensitive resin becomes insoluble by polymerization, and the printing plate reproduces the fine patterns on the film. To discharge the air to hand rub vacuum membrane and sealing the negative version of the main exposure before. 5.印版一定要干燥，否则会影响印版的厚度均匀性，干燥后，不要让印版面与其他物体表面接触，不要用手指接触印刷面，否则会留下痕迹。但去粘前，一定要去掉印版表面的任何斑点。去粘后，要清洁树脂版背面留下残余的斑点，如果不清洁掉这些东西，会影响印版厚度均匀性和装版胶带的粘着力。 5., the printing plate must be dry, otherwise it will affect the thickness uniformity of the printing plate. After drying, don't let the printing plate contact with other objects surface, don't touch the printing surface with your finger, otherwise it will leave traces. But before sticking, make sure to remove any spots on the surface of the plate. After sticking, make sure that the remaining spots are left on the back of the resin plate. If you don't clean them, the thickness of the printing plate will be affected and the adhesive force of the tape will be affected. 在制作树脂版时，常常会发生细线条部分被冲洗掉或阴图部分浮雕较浅，这时需要采用特殊工艺，以达到理想效果： In the manufacture of resin version, often occurs fine lines were washed out or negative part of relief is shallow, and then need to adopt a special process to achieve the desired effect: 采用“分离背曝光”工艺。瓦楞纸箱行业一般采用版厚为3.94mm柔性树脂版，其图文深度以1.52～2.00mm最佳，基层较薄，对印刷图案中非常细微的部分不能承受常规的曝光，这时就需要采用“分离背曝光”工艺。首先确认菲林片中非常细的线点和文字区域，用蒙片切成一个区域轮廓样板，先对版背曝光建立全部基层，然后根据菲林片指示将蒙片准确地定位在聚酯支撑膜表面，再进行背曝光以建立 The technique of separating back exposure is adopted. Corrugated box industry generally uses the version of 3.94mm thick flexible resin version, the graphic depth of 1.52 ~ 2.00mm, the thinner of printing patterns in very small part cannot afford regular exposure, then you need to use "back exposure separation process. The first confirmed in the film very fine lines and text regions, with Mongolia pieces of a regional contour model, the first version of the back exposure establish all the grassroots, then according to the film indicates the mask accurately located on the surface of polyester film support, and then back to establish exposure |
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