Pre-press technology is an important
problem for book printing in
China. A professional book printing company cannot print books of
high-quality if they do not deal with the pre-press problems. Today,
ChinaPrintingExport will summarize ten pre-press tips of book
printing for you.
1. The layout of copywriting and effective
content should be more than 3mm away from the cutting line to avoid text being
cut during cutting.
2. The designed document should convert the
text of the manuscript into a curve, so as to avoid losing text or garbled
characters due to the lack of fonts when outputting the plate.
3. Please do not use system characters when
inputting text, it will cause white nodes at the interlaced strokes. After
turning the font into a curve, zoom in and observe. If there are white nodes at
the interlaced strokes of the text, it means that the font is a system word or
a font that cannot be used for book printing, and you need to use another font
instead.
4. Avoid printing text after typing in
PHOTOSHOP and bitmap software. The bitmap text will be blurred to varying
degrees when printing.
5. For all input or self-drawn line color
blocks and other graphics, the thickness of the line frame should not be less
than 0.1mm, otherwise the printed books will be broken or unable to appear.
You cannot set the “edge width” for any
gradient object, because the interpretation of the CTP publishing system is
different, which will cause insufficient color filling of the gradient edge.
6. If the picture is not processed well or
the picture format is wrong, the picture will be lost. RGB pictures or other
non-CMYK 32-bit pictures below 300DPI will cause discoloration and blurring.
When using precise cropping of the frame, please check whether there is precise
cropping locked to the frame, such as unlocked. All objects in the precise
cropping frame will be lost.
7. In Coreldraw9, when applying a gradient,
rotation during imposition can easily lead to errors in the direction of the
gradient layer. When applied to interactive effects (such as: three-dimensional
effects, shadow effects), it is easy to cause the effects to run out and lose
when the versions are compatible and rotated. Please separate the effect after
finishing the effect, and then turn the bitmap again.
8. Reminder: If the shadow effect is built
on top of the color, please modify the single black
color of the shadow, such as: the base map is yellow, add an appropriate amount of yellow to the black of the effect,
C=0, Y=80, M=0, K=100, this can solve the effect
of gray layer and affect the quality. When using the gradient effect: single color gradient to black, change the color
of single black, such as: magenta to black gradient,
in black Change the middle to: C=0, Y=0, M=100, K=100, this can solve the gradual effect of the gray layer in the
gradual layer, which affects the quality.
These are the issues that should be paid
attention to in the pre-press design. After finishing these ten points, our
book printing will be much smoother and there will be fewer opportunities for
errors.