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纸盒印前制版应该注意哪些事项?

来源:http://www.shuangfengbaozhuang.cn 时间:2021-01-26

(1)不同种类的纸盒需要拼在一张印版上进行印刷时,如果拼版时色调相同或相近的产品没有拼在同一纵向位置上,可能会出现A款产品能达到打样稿标准,B款产品基本接近打样稿标准,C款产品与打样稿有轻微色差,D款产品与打样稿色差较大的现象。因此,在拼版时应将暖色调、冷色调、中间色调的产品拼在同一纵向位置上,以便于印刷出的产品。
(1) When different kinds of cartons need to be put together on a printing plate for printing, if the products with the same or similar hues are not put together in the same vertical position, there may be a phenomenon that product a can reach the standard of proofing draft, product B is basically close to the standard of proofing draft, product C has slight color difference with proofing draft, and product D has large color difference with proofing draft. Therefore, the warm tone, cold tone and middle tone products should be put together in the same vertical position in order to print high-quality products.
(2)拼版时如果将纸盒的非图文部分放于叼口处,而拖梢处放的不是连续调图像,是平网或实地的话,那么印刷时就很容易产生“鬼影”,严重影响产品质量。此时应将非图文部分放于拖梢处,这样就不会出现“鬼影”。
(2) When making up, if the non graphic part of the carton is placed in its mouth, and the trailing end is not placed with continuous image adjustment, flat screen or field, then it is easy to produce "ghost" in printing, which seriously affects the product quality. At this time, the non graphic part should be placed at the trailing end, so that "ghost shadow" will not appear.
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(3)拼版时还应注意不能为了节省胶片而将纸盒成品线省去,而是依靠晒版和印刷人员计算叼口和成品的位置,这样会大大影响生产效率,还可能会因为晒版和印刷人员一时疏忽,造成重大事故。
(3) When making up, we should pay attention not to omit the carton product line in order to save film, but to rely on the print and printing personnel to calculate the position of its mouth and the finished product, which will greatly affect the production efficiency, and may cause serious accidents due to the negligence of the print and printing personnel.
(4)输出的胶片上通常不含拉规标识线,但如果遇到叼口与拖梢均为空白的情况,会给纸盒的印刷定位带来极大不便。对此,有必要在胶片上制作出拉规标识线。凡是不需要裱瓦楞纸板的包装纸盒,拉规标识线制作于靠身部位;需要裱瓦楞纸板的包装纸盒,拉规标识线制作于朝外部位。
(4) The output film usually does not contain the marking line of the drawgauge, but if the mouth and the trailing end are blank, it will bring great inconvenience to the printing positioning of the carton. Therefore, it is necessary to make the drawing gauge mark line on the film. For those cartons that do not need to be mounted with corrugated board, the draw mark line is made at the body part; for those cartons that need to be mounted with corrugated board, the draw mark line is made at the outward part.
(5)确保胶片印刷要求,胶片输出后认真核对胶片上的图文是否与打样稿一致(作为核对基准的纸盒刀版线须规范)。
(5) Ensure that the film meets the printing requirements. After the film is output, carefully check whether the picture and text on the film are consistent with the proofing draft (the carton knife plate line as the check benchmark must be standardized).
(6)保证不同胶片之间的正确套准,这是因为一套胶片一般分两次输出,其套印精度很容易受到一些客观因素的影响。输出的胶片一旦出现质量问题,应重新制作。
(6) To ensure the correct registration between different films, this is because a set of films is generally output twice, and its overprint accuracy is easily affected by some objective factors. Once the output film has quality problems, it should be remade.
(7)晒版前应认真比较胶片与打样稿,如果主色调的胶片密度偏大,就应加晒版时的曝光时间,避免印刷色调偏重;如果密度偏小,则应减少晒版时的曝光时间,以免网点丢失影响色彩再现。
(7) Before printing, you should carefully compare the film and proofing draft. If the film density of the main tone is too high, you should increase the exposure time when printing to avoid printing tone bias. If the density is too low, you should reduce the exposure time when printing to avoid dot loss affecting color reproduction.
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