High-speed chip-matrix 1200-dpi LED printhead

Masumi Koizumi; Masaharu Nobori; Hiroshi Tohyama; Mitsuhiko Ogihara; Yukio Nakamura

doi:10.1117/12.410797

21 December 2000 High-speed chip-matrix 1200-dpi LED printhead

Masumi Koizumi, Masaharu Nobori, Hiroshi Tohyama, Mitsuhiko Ogihara, Yukio Nakamura

Proceedings Volume 4300, Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts VI; (2000) https://doi.org/10.1117/12.410797
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States

Abstract

We have developed a novel 1200 dot per inch light emitting diode (LED) printhead for a high quality digital color printer in the next generation. Performance tests showed that the LED printhead was really suitable for a color printer printhead: an excellent light output uniformity within +/- 1 percent, a high contrast light spot of 80 percent, a high accuracy light spot position within +/- 20 micrometers , and a very high light output efficiency to realize a high-speed printing of 45 pages per minute. In order to achieve the high performance of the LED printhead, we have developed an original 1200 dpi LED array chip with 8 by 8 matrix-structured wiring. The chip-matrix LED array chip was fabricated on a double hetero structured Al_xGa_1-xAs epitaxial wafer using our original fabrication techniques and device designs. This is the key for fabricating a super-high resolution array chip with a super- high light output efficiency. Moreover, the CM LED array chip made it possible to reduce an overall super-high- density printhead cost: the number of bonding wires and driver integrated circuit chips on the LED printhead decreases to one-fourth, and one-half, respectively, compared to the conventional 1200 dpi printhead.

Citation Download Citation

Masumi Koizumi, Masaharu Nobori, Hiroshi Tohyama, Mitsuhiko Ogihara, and Yukio Nakamura "High-speed chip-matrix 1200-dpi LED printhead", Proc. SPIE 4300, Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts VI, (21 December 2000); https://doi.org/10.1117/12.410797

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available