We would like to introduce 2 types of Functional Black Inks.
We are introducing Non-Conductive Black Ink which has the function of high electrical resistance value of ink layer and non-conductivity of electricity.
In general, carbon black pigment is commonly used for black inks.
However, due to conductivity of this carbon black, if this ink is printed, the ink layer will have low electrical resistance (Conductivity tends to become higher.).
Thus malfunction of electrical devises might occur by the instantaneous sparking when the electricity flows in the ink layer. In addition, sometimes it will cause interfering problem of radio wave for a built in antenna if this ink is used for the display of mobile phone.
In connection to the solution of these problems, there has been demand of Non-Conductive Black Ink (Electricity is difficult to pass through.) with high electrical resistance.
For conventional type of Non-Conductive Black Ink, it did not use carbon black for making black color instead black color was created by mixing various colors. The ink could not have good opacity effect.
However, there have been some cases of demand which people have asked for high opacity effect for the display of PC and Mobile phone from the aspect of design and function.
We have, therefore, developed Non-Conductive Ink with Non-Conductivity and Opacity Effect to comply with both functions.
Since our Non-Conductive Ink has similar tone of standard black ink, this ink is suitable for flat TV and display of mobile phone to meet the requirement of opacity effect.
You could prevent malfunction of devises and have good reception of radio wave.
The following samples are displays of mobile phones using Non-Conductive Black Inks for framing. The antenna or other radio devises are installed behind.
Photo 1: Color difference of black color between conventional Non-Conductive Ink (Color matched black) and New Non-Conductive Ink.
The difference of Opacity effect is very obvious by comparing the pictures.
Each Ink series will have surface electrical resistance value of above 1014 Ω .
(For standard black ink, electrical resistance value is 105 ~ 1010 Ω .)
Especially POS and MRX Ink Series, we have actual work cases of achieving electrical resistance value over 1015 Ω .
Since we offer many kinds of solvent type Non-Conductive Inks, we could comply with wide range of substrate materials such as PC, Hard coated Acrylic, Glass, etc.
In our current product range for Non-Conductive Black Ink, there are POS, MRX, INQ Ink Series, etc.
Since the usage of this ink is printed on the back layer of decoration layer as back printing, it will not spoil the front print layer of decoration.
The application is the same as standard black ink.
This ink will be printed as same way as the decoration printing by screen print, the ink layer could form a high electrical resistance and make simpler manufacturing process.
Photo 2: Multi-Colored Printing for IMD
Introducing Jet-Black Ink with adding value of high quality taste by Onyx color.
This Jet-Black Ink can produce Glossy black color finish like Piano Black and Onyx.
By producing high quality of glossiness and special luster, your product will have the extra value.
Photo 3: Using Onyx color, we have achieved the color appearance of high quality taste of glossiness and special luster for IMD.
Photo 4: Enlarged picture
In order to produce Jet-Black color, please use ISX-Piano Black for the 1st layer and use Standard Black Ink for the 2nd layer as multi-printing.
Chart 5: Diagram of Cross Section of Jet-Black ink and back printing
For more information about Jet-Black Ink, please feel free to contact us.
Teikoku Printing Inks Mfg, Co., Ltd./Laboratory
Tel: +81-3-3800-6760, Fax: +81-3-3800-6603