明天就要交咯~我英语实在太差,做到现在也没翻出来多少~~可以直接回帖,也可发我邮箱1425573721@qq.com
下面是正文
Pre-press Attentions for Corrugated Cartons
Corrugated cartons used to belong to transporting package, but now tend to become consumer package in the tide of market economic development. Therefore, higher requirements on layout and printing of cartons are made.
Rubber plate printing technology had been applied by most carton manufacturers before 1995.Currently, flexographic printing is occupying an important position in the industry, thus how to improve flexographic printing quality is a big concern. In my opinion, printing quality mainly depends on color sequence, pre-press film output, flexographic plate-making and printing ink etc
一、 Color Sequence
In flexographic printing, printing plates in different colors usually use solid plate and water-based ink that doesn’t have good transparency. Therefore, whether colors after being stacked can conform to requirement of the copy, and whether satisfying overprint effect can be achieved, shall be considered when arranging overprint sequence of color printing plates. Theses points are directly related with the quality of printing products. Printing sequence is generally arranged according to copy design and plate-making selection. However, it may change upon the requirement of technology and product characteristics. Color sequence in normal flexographic plate printing is decided according to the following:
1. First print ink with strong covering capacity. Tint colors shall be printed first, and then follow deep colors.
2.Deep-color outline shall be printed first in case of multi-overprint colors and when deep-color outline does not serve as the overprint guide.
3. When it’s required to eliminate outline burr by covering the inward edge of image outline with the deepest color, the color shall be overprinted at last. However, sometimes the color also serves as overprint guide, while you may print a part of the deep color as the guide of other color overprint plate, and finally lap-print the deep-color outline.
下面是正文
Pre-press Attentions for Corrugated Cartons
Corrugated cartons used to belong to transporting package, but now tend to become consumer package in the tide of market economic development. Therefore, higher requirements on layout and printing of cartons are made.
Rubber plate printing technology had been applied by most carton manufacturers before 1995.Currently, flexographic printing is occupying an important position in the industry, thus how to improve flexographic printing quality is a big concern. In my opinion, printing quality mainly depends on color sequence, pre-press film output, flexographic plate-making and printing ink etc
一、 Color Sequence
In flexographic printing, printing plates in different colors usually use solid plate and water-based ink that doesn’t have good transparency. Therefore, whether colors after being stacked can conform to requirement of the copy, and whether satisfying overprint effect can be achieved, shall be considered when arranging overprint sequence of color printing plates. Theses points are directly related with the quality of printing products. Printing sequence is generally arranged according to copy design and plate-making selection. However, it may change upon the requirement of technology and product characteristics. Color sequence in normal flexographic plate printing is decided according to the following:
1. First print ink with strong covering capacity. Tint colors shall be printed first, and then follow deep colors.
2.Deep-color outline shall be printed first in case of multi-overprint colors and when deep-color outline does not serve as the overprint guide.
3. When it’s required to eliminate outline burr by covering the inward edge of image outline with the deepest color, the color shall be overprinted at last. However, sometimes the color also serves as overprint guide, while you may print a part of the deep color as the guide of other color overprint plate, and finally lap-print the deep-color outline.