发明公开
EP1791342A3 An image forming apparatus having an optical unit and an image reading device capable of preventing deterioration of image reading accuracy
有权
基本信息:
- 专利标题： An image forming apparatus having an optical unit and an image reading device capable of preventing deterioration of image reading accuracy
- 专利标题（中）：为了避免图像形成装置，包括一个光学单元和图像读取装置与所述图像读取精度的恶化的能力
- 申请号：EP06256032.1 申请日：2006-11-24
- 公开(公告)号：EP1791342A3 公开(公告)日：2008-07-02
- 发明人： Yamazaki, Kohichi , Kimura, Tetsuya c/o Ricoh Company Ltd., , Kusumoto, Hiroshi c/o Ricoh Company Ltd., , Nagao, Yoshiaki c/o Ricoh Company Ltd., , Shimazu, Takehisa c/o Ricoh Company Ltd.,
- 申请人： Ricoh Company, Ltd.
- 申请人地址： 3-6, Nakamagome 1-chome, Ohta-ku Tokyo 143-8555 JP
- 专利权人： Ricoh Company, Ltd.
- 当前专利权人： Ricoh Company, Ltd.
- 当前专利权人地址： 3-6, Nakamagome 1-chome, Ohta-ku Tokyo 143-8555 JP
- 代理机构： Mounteney, Simon James
- 优先权： JP2005341992 20051128
- 主分类号： H04N1/03
- IPC分类号： H04N1/03
摘要：
An optical unit may include an image pick-up device, a lens unit and a holding member. The image pick-up device may convert a reflected light reflected from an original document to an electric signal, after the light is irradiated on the original document from a light source. The lens unit may image the reflected light on the image pick-up device. The holding member may hold the image pick-up device and lenses. The direction of a fluctuation of a focal length of the lens unit caused by heat and a direction of the fluctuation of a distance between the image pick-up device and the lens unit caused by heat may agree with each other.
公开/授权文献:
IPC结构图谱:
| H | 电学 |
| --H04 | 电通信技术 |
| ----H04N | 图像通信，例如电视 |
| ------H04N1/00 | 文件或类似物的扫描、传输或重现，例如传真传输；其零部件 |
| --------H04N1/024 | .扫描头的零部件 |
| ----------H04N1/028 | ..用于拾取图像信息 |
| ------------H04N1/03 | ...带有基本上为线性阵列排列的光检测器 |