THE IMAGING SOCIETY OF JAPAN
RECOGNIZES ITS HIGH-QUALITY AND HIGH-RESOLUTION IMAGES
TOKYO, June 11, 2009 – A high-resolution LED (light-emitting diode) print head
developed by Fuji Xerox Co., Ltd. won The Imaging Society of Japan’s Technology Award
yesterday. The LED print head with self-scanning light emitting device is incorporated
into Fuji Xerox’s color multifunction devices and color printers.
The development of a 1,200 dpi self-scanning LED together with a dedicated ASIC
(application-specific integrated circuit) has overcome the issues presented by
conventional LED print heads and also has realized high resolution. The Imaging Society of
Japan, in presenting the award, recognized the contribution of Fuji Xerox’s LED print
head to the advancement of electrophotographic technology.
About the Award-Winning LED Print Head
LED print heads require neither a polygon mirror nor the motor to rotate the mirror, which
enables a size reduction as well as noiseless operation. While they have such advantages,
conventional LED print heads had difficulty in realizing higher image quality due to
numerous light-emitting elements, which cause fluctuations in the amount of light
resulting in unevenness in color density.
Fuji Xerox has responded to these issues by developing a 1,200 dpi, high-resolution
self-scanning light-emitting device (SLED*1) along with a technology, DELCIS*2, which
enables precise integrated control of all light-emitting elements by a single
high-performance ASIC. Furthermore, Fuji Xerox adopted lenses with uniform optical
characteristics to create a simple-structure, high-resolution LED print head (1,200 x
2,400 dpi) (Figure 1), which has realized downsizing as well as high-quality images equal
or superior to those produced via laser raster output scanner (ROS) systems.
*1 Self-Scanning Light Emitting Device: A device that can emit light in
sequence from its elements.
*2 Digitally Enhanced Lighting Control Imaging System: An LED exposure
control technology that uses proprietary SLEDs. Highly precise correction of the amount of
light is achieved by ASIC’s integrated control of all SLEDs, resulting in a high
resolution of 1,200 x 2,400 dpi. DELCIS is a registered trademark in Japan.
Products incorporating the LED print head
Fuji Xerox first incorporated this LED print head in four models of its full-color digital
multifunction devices launched in November 2007 (ApeosPort-III C3300/C2200, DocuCentre-III C3300/C2200), and later in key products
such as the color printer DocuPrint C2250 as well as the full-color digital multifunction
devices ApeosPort-III C3305 and C2205 launched in November 2008.
Fuji Xerox’s LED print head has dramatically reduced its size and weight compared to
the conventional laser ROS system allowing more room for a device’s paper ejection
(equal to the space for one paper tray) where a finisher capable of stapling can be loaded
(Figure 2). |
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| Figure 2 |
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