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1. 发明授权

US06215968B1 Image forming apparatus with half-tone density control 有权
标题翻译：具有半色调密度控制的图像形成装置
公开(公告)号：US06215968B1
公开(公告)日：2001-04-10
申请号：US09545721
申请日：2000-04-07
申请人： Makoto Uehara , Toshihiro Ohta , Yasutaka Maeda , Takashi Kitagawa , Katsuhiro Nagayama , Shouji Tomita , Kaori Dakeshita , Daisaku Imaizumi
发明人： Makoto Uehara , Toshihiro Ohta , Yasutaka Maeda , Takashi Kitagawa , Katsuhiro Nagayama , Shouji Tomita , Kaori Dakeshita , Daisaku Imaizumi
IPC分类号： G03G1500
CPC分类号： H04N1/4078
摘要： A high density detecting toner pattern is formed on a photosensitive body and a high density correction is effected by comparing a value detected by a reflection sensor with a high density reference value so as to maintain an image density at a specific level. An image density correcting section adopts a result of the preceding high density correction as the high density reference value, and compares the same with a result of a current high density correction. The image density correcting section effects the half-tone density correction only when a difference reaches or exceeds a preset difference reference value by forming a half-tone density detecting toner pattern on the photosensitive body and comparing a value detected by the reflection sensor with a half-tone reference value. Consequently, it has become possible to provide an image forming apparatus which can maintain a density output of an entire image at a specific level for any kind of images including solid, line, and half-tone, etc. while shortening a time required for the density correction and reducing a quantity of toner consumed for the density correction.
摘要翻译：在感光体上形成高密度检测调色剂图案，并且通过将由反射传感器检测的值与高密度参考值进行比较来实现高密度校正，以将图像浓度保持在特定水平。图像浓度校正部分采用先前的高浓度校正的结果作为高密度参考值，并将其与当前高密度校正的结果进行比较。图像浓度校正部仅通过在感光体上形成半色调浓度检测调色剂图案而将差分达到或超过预设差值基准值来实现半色调浓度校正，并将反射传感器检测到的值与半参考值。因此，可以提供一种图像形成装置，其可以将包括实线，线条和半色调等的任何种类的图像的整个图像的浓度输出保持在特定的水平，同时缩短所需的时间密度校正和减少密度校正所消耗的调色剂量。

2. 发明授权

US06847791B2 Image formation controlling method and image forming apparatus 有权
标题翻译：图像形成控制方法和图像形成装置
公开(公告)号：US06847791B2
公开(公告)日：2005-01-25
申请号：US10626059
申请日：2003-07-23
申请人： Takashi Kitagawa , Kaori Dakeshita , Toshiaki Ino , Takayuki Yamanaka , Eiichi Kido
发明人： Takashi Kitagawa , Kaori Dakeshita , Toshiaki Ino , Takayuki Yamanaka , Eiichi Kido
IPC分类号： G01N21/47 , G01N9/00 , G03G15/00 , G03G15/01 , G03G15/08 , G03G21/00 , H04N1/23 , H04N1/29 , H04N1/60
CPC分类号： H04N1/6033 , G03G15/0131 , G03G15/0194 , G03G15/5058 , G03G2215/00059 , G03G2215/0164 , G03G2221/1603
摘要： Before replacement of constituent parts of an image density sensor or of other image forming units, the image density of a formed test toner patch image is detected by the image density sensor and conditions for image formation are controlled. After replacement of the constituent parts, the image density sensor detects the image density of a test toner patch image which is formed based on the controlled conditions for image formation. The optical output and/or the optical sensitivity is adjusted so that a detected value becomes a predetermined reference value, to calibrate the image density sensor. With this image formation controlling method, the image density sensor can be calibrated easily and precisely, the image density of a toner pattern image can be held proper and a stable high-quality image can be obtained.
摘要翻译：在更换图像浓度传感器或其它图像形成单元的组成部分之前，通过图像浓度传感器检测所形成的测试调色剂色块图像的图像浓度，并且控制用于图像形成的条件。在更换构成部件之后，图像浓度传感器检测基于图像形成的受控条件形成的测试色粉贴片图像的图像浓度。调整光学输出和/或光学灵敏度，使得检测值成为预定的参考值，以校准图像浓度传感器。利用该图像形成控制方法，可以容易且精确地校准图像浓度传感器，可以使调色剂图案图像的图像浓度保持正确，并且可以获得稳定的高质量图像。

3. 发明授权

US5972551A Crystalline titanyl phthalocyanines and use thereof 失效
标题翻译：结晶氧钛酞菁及其用途
公开(公告)号：US5972551A
公开(公告)日：1999-10-26
申请号：US995397
申请日：1997-12-19
申请人： Masato Miyauchi , Kaori Dakeshita , Ichiro Fujii
发明人： Masato Miyauchi , Kaori Dakeshita , Ichiro Fujii
IPC分类号： C07D487/22 , C07F7/00 , C09B67/50 , G03G5/06
CPC分类号： C07F7/006 , G03G5/0696
摘要： A crystalline titanyl phthalocyanine having diffraction peaks at least at 7.4.degree., 9.4.degree., 9.7.degree. and 27.3.degree. of Bragg angle (20.+-.0.2.degree.) in X-ray diffraction pattern with a doublet peak at 9.4.degree. or 9.7.degree., one of the diffraction peaks at 9.4.degree. and 9.7.degree. being the maximum.
摘要翻译：具有衍射峰的晶体氧钛酞菁在X-射线衍射图中具有至少7.4°，9.4°，9.7°和27.3°布拉格角（20 +/- 0.2°），在9.4°或9.7°处具有双峰，一个在9.4°和9.7°处的衍射峰最大。

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