1. Spot color design
Spot color means accurate color and large
color gamut, and is favored by many designers in book cover design. Because the book printing of the spot color is
to use C, M, Y, K four colors to directly copy the original color, the spot
color ink is also a pre-mixed specific color ink, such as fluorescent yellow,
pearl blue, metallic gold silver ink. Therefore, the use of spot color is also
different from the conventional four-color printing. Designers should pay
attention to the following problems when using spot color:
Color must be uniform. In different
software, the same two color schemes may have different names. For example,
FreeHand named PANIONEI1F5 as PANTONE1F5CVC or PANIONE1F5CVV, and PANTONE1F5CV
for PageMaker. When you put the FreeHand graphics object into the PageMaker for
typesetting, the same color will have three different names, and the color
output will produce three plates, resulting in output errors. Therefore, if the
data file needs to be used in more than two kinds of software, before the
integrated color output, designers must pay attention: must unify the same
color use name. The more commonly used method is based on the color name in the
sending software, the name of the same spot color in the palette of all kinds
of software renamed uniform name.
Try to choose standard for your color
scheme. The best tool that spot color chooses is standard color manual, this
kind of tool book is not only lubricious all ready, and match reasonable, still
can serve as the communication platform that stylist and printing companies, also can assure to special color ink allocate
save time, labor, high efficiency to finish.
The transformation of solid color and four
colors should be reasonable. Graphic designers, when doing graphic design,
often in four colors and spot color conversion. In particular, due to different
color gamut, four-color printing in many cases can not be completely accurate
to restore the spot color. For example, in systems such as PANTONE spot color,
TOYOColorFinder and RICColorGuide, many colors have exceeded the printing
four-color range and cannot be reproduced with four-color ink. The CMYK
combination value provided by the system is only approximate. So if you select
the color in the spot color matching system and print the four-color separation
output; Or by referring to the corresponding CMYK combination values that the
spot color approximates to display in the system, and using these values to
replace the original spot color with the printed four colors, the result is
sure to cause color distortion.
For dot matrix graphics software, spot
color needs to be added or specified. Vector software and dot matrix drawing
software are often used in graphic design. For vector drawing software, if a
spot color is selected or defined, the color will always exist as a spot color
attribute unless the spot color attribute is specifically changed or converted
to print color. However, for the dot-matrix mapping software, when the spot
color is applied to other images, it will be automatically converted into the
same color mode as the data image applied to the color, so the spot color must
be added or specified. For example, a spot color can be added and defined in
Photoshop in two ways. First, a spot color can be applied to the entire image
as a tone. The second is to apply the spot color to specific areas of the
image. It is necessary to create the spot color channel and select the saved
format as photoshopDCS2.0 EPS file, preview as Tiff (8-bit/pixel), and DCS as
multi-file DCS, no composite, encoded as binary.
Jade if the spot color is used is gold or
silver, generally need to spread the background color first (gold printing
first transparent yellow color, silver printing first white ink for the
background color).For the overly fine Yin and Yang text and lines should not be
printed gold, silver ink, lines should not be less than 0.15mm, text should not
be less than the word no. 4, otherwise not only easy to paste version,
fracture, and not reflect the metallic luster, twice the effort.
Cost of special color printing is
relatively high, the price that is 4 color printing inks two times to offer commonly,
so the designer is in use special color to need to consider each aspect factor
comprehensively, reasonable choose special color.
2. Design of hollowed-out anti-white text
Now book cover design is also more and more
see the anti-white effect. Hollowed-out back white text is generally designed
on a dark background, using the whiteness of the paper and the background,
forming a contrast to present the text. The greater the contrast, the anti -
white text more obvious. White words on a black background. Problems in
designing and using anti-white words:
Try not to use a large area of blank.
Compared with black words on white background, white words on black background
are more likely to cause visual fatigue. Try not to design a large area of
blank anti-white words. Only partial hollow anti-white words design can be more
consistent with the law of vision.
Try to avoid thin lines and small font
hollow anti - white. Stylist likes to be below brunet setting, turn white fine
line and small font character, such can reflect the quality of printing and
paper class more, show the class of its cover thereby. However, the printing
materials and printing process should be fully considered in this way,
otherwise it will cause the problems of blurred handwriting and the
interruption of some strokes.
Screen deep color back white print as much
as possible with spot color. Deep compound color has the large ink quantity of
yellow, magenta and cyan commonly, if have very network line again, criterion
four colors are all in one, at this time, want to assure to turn white line or
small font clear difficulty is big, if must such design, use spot color as far
as possible, conduce to restore a design. In general, only when the designer
knows more about the printing process features and considers the printing
process when designing, can the book printing cover be more perfect and practical.
