Electrical Ink

Electronic ink is a new method and technology that revolutionizes how information is displayed.  Like most traditional inks, e-ink can be printed on a variety of surfaces, from curved plastics, polyester films, paper and cloth.  Unlike traditional paper, e-ink changes color when energized and can display changing images, like a calculator or mobile phone.  

Related Grinding Media



E-ink has very high requirements for the pigments in it. The pigment molecules coated by the treatment need to move quickly under the drive of electric charge, and the background color needs to be covered when presenting a single color.  Therefore, for the pigment itself covering power, specific gravity, oil absorption and other properties to find a perfect balance point.  And the production of pigment in the E ink requires high quality zirconia beads such as 0.03mm, 0.05mm, 0.1mm. With the  grinding media, the pigment will be attrited to nano stage and keep strong performance. 

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The E-Ink digital signage solutions are designed to perform in a wide variety of industries such as: transportation, retail, hospitality and many other in-demand verticals and applications.

E-INK EPD Technology

One Pigment Ink System

E Ink JustTint™ is a variable transmissive film, which, when adhered to glass or plastic, allows for control of the light through the surface. JustTint utilizes a one-pigment system, but drives the ink in new ways versus other ink systems. In JustTint, the black pigments move to the side when a charge is applied to allow a transparent area of the capsule.

Two Pigment Ink System

E Ink’s two pigment electronic ink system is made up of millions of tiny microcapsules, each about the diameter of a human hair. Each microcapsule contains negatively charged white particles and positively charged black particles suspended in a clear fluid. When a positive or negative electric field is applied, corresponding particles move to the top of the microcapsule where they become visible to the viewer. This makes the surface appear white or black at that spot.

E Ink’s Spectra 3000 utilizes a 3-pigment ink system in a microcup structure. This ink was engineered specifically for Electronic Shelf Labels (ESL) and is offered in black, white and red, and black, white and yellow. This ink system works similarly to the dual pigment system, in that a charge is applied to the pigments, and to a top and bottom electrode to facilitate movement. However, instead of the use of microcapsules, this system utilizes Microcups®, which are filled with the liquid and sealed.

Three Pigment Ink System – E Ink Spectra™ 3000

E Ink Spectra 3100 is E Ink’s next generation Spectra product. Spectra 3100 is a four pigment ink system which incorporates retailer’s requests for additional color functionality, by utilizing black, white, red and yellow particles to offer vibrant color rich content. Spectra 3100 has an improved update time, and an expanded temperature range for red and yellow states, to satisfy retailers’ needs to operate ESL tags in various environments within their stores. In addition, Spectra 3100 will be offered in panels with an updated all-in-one driver IC that supports premium ESLs with higher resolution across various sizes.

Four Pigment Ink System – E Ink Spectra™ 3100

In 2016 E Ink showcased a multi-pigment ink system, Advanced Color ePaper (E Ink ACeP™). ACeP™ achieves a full color gamut, including all eight primary colors, using only colored pigments. The ink can be incorporated into either microcapsule or microcup structures. Color is achieved by having all the colored pigments in every pixel, removing the need for a color filter array. ACeP™ maintains the ultra-low-power and paper-like readability under all lighting conditions of regular E Ink ePaper.

Learn how these different ink systems are utilized in our films.

Advanced Color ePaper (ACeP™) – Four Pigment System