All issues
Volume 44 (2005)
- Issue 6 Pages 408-
- Issue 5 Pages 326-
- Issue 4 Pages 192-
- Issue 3 Pages 138-
- Issue 2 Pages 82-
- Issue 1 Pages 3-
Volume 44, Issue 3
Displaying 1-7 of 7 articles from this issue
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Original Papers
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Yasuo IMURA, Yasunobu YAMASHITA, Takatoshi SENJU, Jin MIZUGUCHI2005 Volume 44 Issue 3 Pages 138-142
Published: 2005
Released on J-STAGE: July 01, 2006
JOURNAL FREE ACCESSThe title compound is a soluble precursor (“latent pigment”: t-BOC QA) of quinacridone pigment (QA) that can be used for electronic and imaging applications. Regeneration of t-BOC QA into QA have been studied in terms of thermogravimetric and X-ray diffraction analyses, as well as IR and diffuse reflectance spectra on powdered substances. Transformation from t-BOC QA to the parent QA begins around 160°C and is completed around 190°C. A variety of colors (yellow via yellowish red to red) appear during the regeneration process, accompanied by evolution of CO2. The crystalline phase of thermally regenerated QA is found to be the β-form used widely in paint industries.View full abstractDownload PDF (433K) -
Yasuo IMURA, Takatoshi SENJU, Jin MIZUGUCHI2005 Volume 44 Issue 3 Pages 143-147
Published: 2005
Released on J-STAGE: July 01, 2006
JOURNAL FREE ACCESSPyrrolopyrroles (DPP) are industrially important red pigments in paint and imaging areas. The title compound is a soluble precursor of DPP called mono t-BOC DPP (“latent pigment”), in which one of the NH groups in DPP is replaced by a t-butoxycarbonyl (t-BOC) group to make it soluble in organic solvents. The regeneration process of mono t-BOC DPP has been studied in terms of thermogravimetric and X-ray diffraction analyses, as well as IR and diffuse reflectance spectra on powdered substances. Transformation from mono t-BOC DPP to the parent DPP begins around 170°C and is completed around 220°C, accompanied by evolution of CO2. The crystal phase of thermally regenerated DPP is different from that of DPP, although the diffuse reflectance spectrum of regenerated DPP is quite similar to that of commercial one.View full abstractDownload PDF (683K)
Imaging Today
“Recent Trend of Exposure Device Technology”
“Recent Trend of Exposure Device Technology”
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—VCSEL array and its application to the copier—Nobuaki UEKI, Hiroaki TEZUKA, Akira OTA2005 Volume 44 Issue 3 Pages 149-155
Published: 2005
Released on J-STAGE: July 01, 2006
JOURNAL FREE ACCESSA progress about the VCSEL array developed by Fuji Xerox for copier and multi-functional printer products were described, referring to the manufacturing process, structural features, device characteristics, and introduction to several built-in products.
For the first time in the world, Fuji Xerox has adopted a VCSEL array as a main part of the product supporting high-speed and high-quality performance, and launched a model into the domestic market from August 2003, and the overseas market from September 2004, respectively. And now we have been proceeding to extend our VCSEL products from mid-to high-volume lineup.
It is worth doing that Fuji Xerox applied VCSEL, which was a Japan-originated semiconductor light emitting device and enabled to realize 2-D array, to the consumer product and commercialized. Consequently, introduction of VCSELs to a variety of applications should be accelerated in the future.View full abstractDownload PDF (2034K) -
Yukio NAKAMURA2005 Volume 44 Issue 3 Pages 156-161
Published: 2005
Released on J-STAGE: July 01, 2006
JOURNAL FREE ACCESSAn LED print head is the solid type light source by which the light scanning was electronized. Taking advantage of this feature, the LED print head has been used for high speed and a broad printer from the former. The high density, the high speed, small size, and low-cost technology in which an LED print head was needed as a write-in light source of a color printer were developed with colorization of a printer.
This paper describes the structure of an LED print head, and its characteristic focusing on the LED device technology which is the key technology of determining high density, high speed, small size, and low-cost.View full abstractDownload PDF (731K) -
—Organic electro-luminescent diodes—Takeo WAKIMOTO2005 Volume 44 Issue 3 Pages 162-169
Published: 2005
Released on J-STAGE: July 01, 2006
JOURNAL FREE ACCESSThe Organic Electroluminescent diodes (OLED) had developed by applying the organic materials, which are developed in the field of the electrophotography. In this paper, a history of the OLED development and cell structures, organic materials, EL panels, products of OLEDs are described.View full abstractDownload PDF (859K) -
Lujun PAN, Yoshikazu NAKAYAMA2005 Volume 44 Issue 3 Pages 170-176
Published: 2005
Released on J-STAGE: July 01, 2006
JOURNAL FREE ACCESSField-emission displays (FED) using carbon nanotubes (CNT) which is considered to be a kind of ideal electron emitter material, has the high light-emission efficiency, wide contract, high speed response, and excellent color quality, which is similar to the conventional cathode ray tubes (CRT), in addition to the characteristic of low power consumption, are expected to be the next-generation flat panel displays which have the higher performances than the popular plasma displays (PDP) and liquid crystalline displays (LCD). In this report, the properties of CNTs, their synthesis methods, the fabrication of CNT emitters and the developments in making CNT-FED are interpreted.View full abstractDownload PDF (1636K) -
Masaru KURAMOTO, Takashi MIZUNO, Toshihiro HASHIZU, Masao IKEDA2005 Volume 44 Issue 3 Pages 177-181
Published: 2005
Released on J-STAGE: July 01, 2006
JOURNAL FREE ACCESSGaN-based blue-violet laser diodes (BV-LDs) have rapidly progressed for use of the next-generation optical storage system. The main issue to practical use has been establishment of reliability for the device. In other words, the reduction of the dislocations in GaN-crystalline structure was the most important issue. The recent development of a low-dislocation-density GaN substrate allows us to fabricate high-quality BV-LDs. In this paper, we report on the structure and basic characteristics of BV-LDs grown on a low-dislocation-density GaN substrate. Also, a hybrid three-wavelength laser diode was demonstrated for system compatibility with the conventional digital versatile disc (DVD) system as well as the compact disc (CD) system.View full abstractDownload PDF (698K)
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