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Epson develops OLED print head
Mark Peters : March 17th 2006 - 07:50 CET
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EpsonEpson develops OLED print head : Seiko Epson Corporation ("Epson") has successfully developed the world's first print head using an OLED (organic light-emitting diode) light source. In addition to its development of OLED displays, Epson has researched the characteristics of OLED as an electronic device. Specifically, Epson has succeeded in creating a print head that uses OLED as a light source (OLED print head), opening the way for utilization of OLED as a new printing technology for printers. At present, electrophotographic printing technologies for copiers and printers use either laser or LED light sources. Epson merged the many years of expertise it had accumulated in printing and display technology.
Epson develops OLED print headEpson OLED print head
Epson partnered with Sumitomo Chemical Co., Ltd. to jointly develop a super bright OLED that can be used in printing. Printing tests using a prototype of an OLED-based print head have produced printouts quality comparable to or better than those produced by conventional laser printers. OLED is formed through a process in which OLED material is applied directly onto a glass substrate, making it possible for a single substrate to have a linear light source. This enables the exact amount of light to be used to irradiate a spot with extreme accuracy to form highly uniform images, and for print heads to be made very small and ultra thin.

OLED printing resolutions - Polysilicon TFT technology
Going forward, it will be possible to merge OLED technology with Epson's low-temperature polysilicon TFT technology to achieve both higher printing resolutions and cost reductions by incorporating an IC into the print head. This highly promising technology will play a vital role in fulfilling the need for color printers that are smaller, have higher resolution, and faster printing speeds. Epson plans to step up its efforts in research and development to realize the full potential of OLED.

About Epson
Epson is a global leader in imaging products including printers, projectors and LCDs. With an innovative and creative culture, Epson is dedicated to exceeding the vision and expectations of customers worldwide with products known for their superior quality, functionality, compactness and energy efficiency. Epson is a network of 98,480 employees in 107 companies around the world, and is proud of its ongoing contributions to the global environment and to the communities in which it is located. Led by the Japan-based Seiko Epson Corp., the Group had consolidated sales of 1479.7 billion yen in fiscal 2004.

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