Nowadays, printing work has been filled with people's production and life, today let us learn about the point in the pre-printing process need to attention!
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CDR is called inside the curve, AI is called inside the text contouring. Because each designer has a different preference, the use of fonts vary widely, no one printer can install all the Chinese and English fonts. If the text in the design is not curved and sent to the printer, the printer's computer does not have the font, which will lead to the font can not be displayed properly.
Black text, four-colour black to K100, if you need to blacken the large words can be used (K100,c40)
Bleeding of colour blocks and pictures
In order to avoid the error of die-cutting, the position of the colour block in the die-cutting line, and the picture must be increased to the periphery of at least 3mm. text and other reading content should be away from the cutting line of at least 3mm, to avoid being cut off.
Beyond the size of the picture or graphic, do not cover with white, this will create a trap, so that printing is prone to error, AI always use clipping mask, CDR into the precise crop box.
White ink documents
In general, white is the colour of the paper. When we use special paper printing, the paper is a coloured background, this time you can do a 'non-printing' of the background coating, used to check whether the document is correct.
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Stamping documents
(1) If stamping needs to leak out the bottom of the colour or paper original colour, stamping documents to do hollowing out. Many designers do When the document, just covered with a layer of printing colour is completely wrong, although the computer looks the same above, such as the red part of the printing of the base colour, then the red in the printing layer, rather than foil stamping layer.
(2) If the foil stamping document hollowed out, the bottom layer of the colour will be revealed, if the need is to reveal the white, then the bottom layer of the printed document is also white.
Picture size
Printed pictures (note that here is the resolution of the picture in the printed document, rather than the resolution of the printed document) must be greater than 300dpi precision, if lower than this precision, the picture is not clear.
300dpi means that there are 300 pixel points in 1 inch. A picture with the same pixels will have reduced accuracy for size enlargement and increased accuracy for size reduction. In order to ensure that the printing accuracy is reduced, the size reduction accuracy is increased. In order to ensure printing accuracy, many designers take a very large picture and reduce it in the layout software, resulting in too high a precision, and a lot of such pictures inside a file will result in the file being too large and the computer running slowly.
CDR design draft, the use of transparency, shadows and filters, be sure to convert to dot matrix. PS production of the design draft, the need to merge the adjustment layer, minimise the layers, so that the file becomes simple, the printer is not easy to make mistakes.
Colour dot less than 5% printing can not be reproduced, less than 10% will increase the difficulty of printing.
Colour mode
Printing files must be CMYK mode, RGB colour gamut is much wider than CMYK mode, if you use RGB direct printing, will produce a relatively large colour difference.
File layering / labelling
Documentation needs to be marked number, size, process, etc., if you use spot colours need to be marked Pantone colour number
Process marking is also a lot of designers in the finished manuscript will miss the details, first of all, the need to do the process of layering out, such as: die-cutting, hot foil stamping, local UV, etc., and finally add the marking process.
So that the printer in the opening of the manuscript is clear, can reduce errors, reduce unnecessary rework.
