An e-book (short for electronic book, also written eBook) is the digital media equivalent of a conventional printed book . Such documents are usually read on personal computers , or on dedicated hardware devices known as e-book readers or e-book devices . Many mobile phones can also be used to read eBooks.
Electronic paper, also called e-paper, is a display technology designed to mimic the appearance of ordinary ink on paper . Unlike a conventional flat panel display , which uses a backlight to illuminate its pixels , electronic paper reflects light like ordinary paper and is capable of holding text and images indefinitely without drawing electricity, while allowing the image to be changed later.
E Ink is a type of electronic paper manufactured by E Ink Corporation .
It is a proprietary material that is processed into a film for integration into electronic displays , particularly for E-book devices such as the Sony Reader , the iLiad , the Cybook Gen3 , the Amazon Kindle , the Readius device from Polymer Vision  and Plastic Logic 's Reader.