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19‏/01‏/2011

ما هو الحبر الالكتروني E Ink

File:Bouquin électronique iLiad en plein soleil.jpg



الحبر الإلكتروني هو نوع من أنواع الورق الإلكتروني المصنع من قبل شركة E Ink.
هذه التقنية الحديثة نسبياً تستخدم بشكل رئيسي في الأجهزة المتنقلة مثل قارئ الكتاب الإلكتروني (مثل أمازون كيندل) وأحياناً الهواتف المحمولة. ما زالت هذه التقنية تستخدم التدرج الرمادي (أي اللونين الأبيض والأسود). من أهم مزايا هذة التقنيه توفيرها العظيم في الطاقة (البطارية) مقارنة بتقنية LCD المستخدمة في الهواتف المتنقلة الحديثة.
الفكرة مبسطة هي عبارة عن كبسولات متناهية الصغر قطر الواحدة منها أصغر من قطر شعرة الإنسان. هذة الكبسولات تحتوي على جزيئات بيضاء وأخرى سوداء، إحداها سالبة والأخرى موجبة. عند تسليط تيار سالب (بما يتناسب مع الصفحة المراد عرضها) فإن الجزيئات السوداء تندفع للأعلى والبيضاء للأسفل، ولا تحتاج إلى تحديث مستمر إلا لتغيير الصفحة. مما يوفر الطاقة.

 ملف:Electronic paper (Side view of Electrophoretic display).PNG



E Ink is a specific proprietary type of electronic paper manufactured by E Ink Corporation, founded in 1997 based on research started at the MIT Media Lab. It is currently available commercially in grayscale and color[1] and is commonly used in mobile devices such as e-readers and, to a lesser extent, mobile phones and watches.

History and manufacturing process

 

The material is processed into a film for integration into electronic displays, particularly for e-readers. The Motorola F3 was the first mobile phone to employ E Ink technology into its display, taking advantage of the material's ultra-low power consumption. In addition, the Samsung Alias 2 uses this technology as the display on the buttons change.[2] The October 2008 limited edition North American issue of Esquire was the first magazine cover to integrate E Ink, and featured flashing text. The cover was manufactured in Shanghai, China, was shipped refrigerated to the United States for binding and was powered by a nominal 90-day integrated battery supply.[3][4]
According to the manufacturer, "The principal components of electronic ink are millions of tiny microcapsules, about the diameter of a human hair. In one incarnation, each microcapsule contains positively charged white particles and negatively charged black particles suspended in a clear fluid. When a positive electric field is applied, the white particles move to the top of the microcapsule to become visible to the reader. This makes the surface appear white at that location. At the same time, an opposite electric field pulls the black particles to the bottom of the microcapsules where they are hidden. By reversing this process, the black particles appear at the top of the capsule, which now makes the surface appear dark at that location."[5]
On June 1, 2009, E Ink Corporation announced an agreement to be purchased by one of its primary business partners, Prime View International, for US$215 million.[6] It is predicted that the purchase by Prime View will speed the development of color E Ink.[6]

E Ink Pearl

On July 31, 2010, E Ink announced a second generation of E-ink displays, a higher contrast screen built with E Ink Pearl Imaging Film.[7] The updated Amazon Kindle DX was the first device announced to use the screen,[8] and the Kindle 3 also incorporates the Pearl display.[9] Sony has also included this technology into its latest release of the Sony Reader Touch edition.[10]

 E Ink Triton

On November 9, 2010, E Ink announced a third generation of E-ink displays, a color display that is easy to read in high light. The E Ink Triton will display 16 shades of gray, and 4096 colors.[11] E Ink Triton is being used in commercially available products such as the Hanvon color eReader.[12]
احمد مسلم 

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