color specification describes and security printing technology
Inorganic ultraviolet fluorescent
pigment known as UV-induced fluorescence. The fluorescent pigment is (zinc,
chromium) or rare earth oxides and trace sulfide active agent with a metal by
calcination. Colorless or pale white, is UV light (200 ~ 400nm) irradiation,
depending on the color of the metal and the activator type and content, while
showing a variety of colors of visible light (400 ~ 800nm). Press the wavelength
of the excitation light is different, can be divided into short-wave UV
excitation fluorescent pigment (excitation wavelength of 254nm) and ultraviolet
excitation fluorescence pigment (excitation wavelength of 365nm) This series of
products under visible light, the color is white or nearly transparent, in light
sources of different wavelengths (254nm, 365nm, 850nm) show one or more
fluorescent color phosphors including organic, inorganic, twilight and other
special effects, colorful and bright. Yao Dexing security type ultraviolet
fluorescent color variety series total of red, purple, yellow and green, blue,
green, yellow, white, blue, green, orange, black. A variety of colors, endless
variations, it is also known as anti-counterfeiting phosphor, the light changed
powder, color powder, invisible fluorescent, Dreaming powder, UV phosphor.
UV excitation security phosphor has good
water resistance and temperature resistance, chemical stability, long service
life for years or even decades. The material can be added to the relevant
material which, such as: transparent or translucent material in plastics,
paints, inks, resins, glass and the like. The material in material security,
guide signs and other fields can be widely applied. Especially suitable for
bars, discos, and other entertainment decoration, painting and other arts and
crafts. The material characteristics: soft close look bright, bright and
eye-catching at night seem remote viewing. In the use of different techniques
can be made into a point, line, surface and other forms. UV irradiation, can
make all kinds of bright points, lines, color light plane. Another feature of
the product are: energy saving, environmental protection, non-toxic, harmless.
It can be widely used safely in all relevant fields
UV phosphors how to reduce the use of
ultraviolet fluorescent blots blots on how to reduce the use of
Ultraviolet fluorescent ink colorless
only under the following specific conditions in order to decrease the prints:
(1), change the pattern or color of the
(2), preferably printed in fluorescent
ink has a background portion, it is conducive to cover fluorescent ink traces;
(3), should choose a good absorbent
paper, special paper invoices ink absorption performance than copper and jams.
(4) there are special requirements for
invisibility printed materials, you can print the first colorless ink.
UV light phosphor display
A, the inorganic phosphor
1. Fluorescence bright color, good
hiding power (opacity can be added free agent).
2. fine spherical particles, easily
dispersed, 98% of the diameter of about 1-10u.
3. good heat resistance: maximum
temperature of 600 ℃,
suitable for high-temperature processing of various processes.
The good solvent resistance, acid,
5. There is no color shift (MIGRATION),
does not pollute.
6. Non-toxic, does not overflow formalin
(FORMALDEHYDE) when heated, can be used for colored toys and food containers.
7. chromosome Wang will overflow, when
in the injection machine for mold, you can save cleaning procedures.
B, organic phosphor
1 fluorescent bright color, do not have
the hiding power, light penetration rate of 90%.
2, good solubility, dissolution Jieke
various oils solvents, but solubility is different, need to be selected
according to the different needs in combination.
3, are dye series, should pay attention
to color shift problems.
4, due to poor weather resistance, to be
added when using other stabilizers.
5, and heat
resistance: maximum temperature of 200 ℃, suitable for less at 200 ℃ processing.