Japanese Toppan Printing Co, Ltd show 400ppi (pixels per inch) electronic paper.
Toppan is the maker of the screen for the Sony LIBRIe ebook.
The high resolution epaper prototype Toppan Printing demonstrated uses an electrophoresis microcapsule method that has been co-developed with the american E Ink corporation.
Read full story on NE Asia.
E Ink seems to be involved in all epaper developments, see our Philips ePaper story for instance.
Don't Miss: This is How to Find a Nintendo Switch in Stock