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    • 1. 发明授权
    • Image forming apparatus with a toner density measuring function
    • 具有调色剂浓度测量功能的图像形成装置
    • US5953554A
    • 1999-09-14
    • US953395
    • 1997-10-17
    • Kazuyuki OhnishiKatsuhiro Nagayama
    • Kazuyuki OhnishiKatsuhiro Nagayama
    • G03G15/08G03G15/00
    • G03G15/5058G03G15/0131G03G2215/00059G03G2215/00063G03G2215/0174
    • The static latent image formed on the photoreceptor which has been charged, by exposing it to light, is developed through four colors of developing units, i.e., yellow, magenta, cyan and black, forming toner images on the photoreceptor. These toner images are transferred to the transfer drum. Before forming the toner images, a device is provided to correct the measurement value of toner density obtained using the light emitter and photosensor into an exact value. Based on the reflected light from a white-coated area formed on the transfer drum, two levels of the intensities of emitted light are determined. The intensity of received light is compared to the standard value so that the output value from the photosensor corresponding to the toner density is made to approximate the standard value.
    • 在感光体上形成的静电潜像被曝光,通过四色显影单元即黄色,品红色,青色和黑色显影,在感光体上形成调色剂图像。 这些调色剂图像被转印到转印鼓上。 在形成调色剂图像之前,提供了一种装置,用于将使用光发射器和光电传感器获得的调色剂密度的测量值校正为精确值。 基于形成在转印鼓上的白色涂覆区域的反射光,确定发射光强度的两个水平。 将接收光的强度与标准值进行比较,使得与调色剂浓度对应的光电传感器的输出值接近标准值。
    • 3. 发明申请
    • Image processing apparatus
    • 图像处理装置
    • US20080174833A1
    • 2008-07-24
    • US12009976
    • 2008-01-23
    • Kazuyuki Ohnishi
    • Kazuyuki Ohnishi
    • H04N1/04
    • H04N1/00846H04N1/00848H04N1/32122H04N2201/0082H04N2201/323H04N2201/3274H04N2201/328
    • The present invention allows a specific image to be easily changed when using a counter in the case of adding a specific image. A specific image adding section 12 for adding the specific image to inputted image data includes a first counter 15 for deciding positions of a main scanning direction and a vertical scanning direction and a second counter 16 for specifying a form of the specific image. The second counter 16 counts up addresses of pixels counterclockwise with a starting point at one corner on a matrix made up of the main scanning direction and vertical scanning direction. If the first counter 15 counts a predetermined count value, the second counter 16 starts. When a maximum value of the count value of the second counter 16 is equal to or less than a count set value, an image is formed on each of the pixels. The pixel on which the image is formed is changed and the form of the specific image is also changed by changing the count set value.
    • 本发明允许在添加特定图像的情况下使用计数器时容易地改变特定图像。 用于将特定图像添加到输入图像数据的特定图像添加部分12包括用于确定主扫描方向和垂直扫描方向的位置的第一计数器15和用于指定特定图像的形式的第二计数器16。 第二计数器16以由主扫描方向和垂直扫描方向构成的矩阵的一个拐角处的起点以逆时针方向计数像素的地址。 如果第一计数器15计数预定计数值,则第二计数器16开始。 当第二计数器16的计数值的最大值等于或小于计数设定值时,在每个像素上形成图像。 形成图像的像素被改变,特定图像的形式也通过改变计数设定值而改变。
    • 5. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US5845185A
    • 1998-12-01
    • US792759
    • 1997-02-04
    • Hidekazu SakagamiHideo MatsudaOsamu FujimotoAtsushi IdeKazuyuki Ohnishi
    • Hidekazu SakagamiHideo MatsudaOsamu FujimotoAtsushi IdeKazuyuki Ohnishi
    • G03G15/16G03G15/14
    • G03G15/162
    • An intermediate transfer drum has at least a drum main body having a volume resistivity of 10.sup.4 to 10.sup.8 .OMEGA.cm, and an insulating layer provided on an outer surface of the drum main body. A first transfer voltage applying roller is provided inside the intermediate transfer drum so as to be opposite to a photosensitive drum and so as to be in contact with an inner surface of the intermediate transfer drum. A transfer roller is provided inside the intermediate transfer drum so as to be opposite to a second transfer grounded roller and so as to be in contact with the inner surface of the intermediate transfer drum. By thus arranging an image forming apparatus wherein image formation is carried out with respect to recording paper through the intermediate transfer drum, an optimal first transfer voltage can be applied from the photosensitive drum to the intermediate transfer drum, while an optimal second transfer voltage can be applied from the intermediate transfer drum to the recording medium. As a result, the first transfer and the second transfer are individually and simultaneously carried out. Furthermore, since the intermediate transfer drum does not become large in size, it is avoidable that the image forming apparatus becomes bulkier, while the lowering of the copying speed can also be suppressed.
    • 中间转印鼓至少具有体积电阻率为104-108欧姆·厘米的鼓主体,以及设置在鼓主体的外表面上的绝缘层。 第一转印电压施加辊设置在中间转印鼓内部,以与感光鼓相对并且与中间转印鼓的内表面接触。 转印辊设置在中间转印鼓内部,以便与第二转印接地辊相对并且与中间转印鼓的内表面接触。 通过这样布置图像形成装置,其中通过中间转印鼓相对于记录纸进行图像形成,可以将最佳的第一转印电压从感光鼓施加到中间转印鼓,而最佳的第二转印电压可以 从中间转印鼓施加到记录介质。 结果,第一次转印和第二次转印单独并且同时进行。 此外,由于中间转印鼓的尺寸不会变大,所以可以避免图像形成装置变得更大,同时也可以抑制复印速度的降低。