Image forming apparatus having fixing unit for mounting/demounting
    1.
    发明授权
    Image forming apparatus having fixing unit for mounting/demounting 失效
    图像形成装置具有用于安装/拆卸的固定单元

    公开(公告)号:US06292638B1

    公开(公告)日:2001-09-18

    申请号:US09704789

    申请日:2000-11-03

    IPC分类号: G03G1516

    摘要: An image forming apparatus has a plurality of print assemblies for forming a color image, a fixing unit, and a paper conveyor belt for conveying a paper sheet through the print assemblies and the fixing unit. The fixing unit includes a pair of fixing rollers, a nip control mechanism for moving the pair of the fixing rollers between a nip position and a non-nip position, and a fixing unit securing member movable with the nip control mechanism. Thus, the fixing unit can be easily mounted and demounted.

    摘要翻译: 图像形成装置具有用于形成彩色图像的多个打印组件,定影单元和用于通过打印组件和定影单元输送纸张的纸张传送带。 定影单元包括一对定影辊,用于在夹持位置和非压合位置之间移动一对定影辊的辊隙控制机构和可与辊隙控制机构一起移动的固定单元固定构件。 因此,可以容易地安装和拆卸固定单元。

    Color shift correcting structure of image forming apparatus
    2.
    发明授权
    Color shift correcting structure of image forming apparatus 有权
    图像形成装置的色移校正结构

    公开(公告)号:US06393244B1

    公开(公告)日:2002-05-21

    申请号:US09617822

    申请日:2000-07-17

    IPC分类号: G03G1514

    摘要: An image-forming device such as a full color printer is provided which is designed to correct the speed of an image carrier such as a sheet conveyer belt for compensating for a shift between colors. The image-forming device forms electrostatic marks on the image carrier at regular intervals and detects the marks using a sensor(s) to determine a change in speed of the image carrier based on sensor signals.

    摘要翻译: 提供了诸如全色打印机的图像形成装置,其被设计为校正诸如片状输送带的图像载体的速度,以补偿颜色之间的偏移。 图像形成装置以规则的间隔在图像载体上形成静电标记,并使用传感器检测标记,以基于传感器信号确定图像载体的速度变化。

    Image forming apparatus, recording medium in which test-pattern image forming program is recorded, test-pattern image forming method, and skew angle calculation method
    3.
    发明授权
    Image forming apparatus, recording medium in which test-pattern image forming program is recorded, test-pattern image forming method, and skew angle calculation method 失效
    图像形成装置,其中记录测试图案图像形成程序的记录介质,测试图案图像形成方法和倾斜角度计算方法

    公开(公告)号:US06714748B1

    公开(公告)日:2004-03-30

    申请号:US09721663

    申请日:2000-11-27

    IPC分类号: G03G1500

    摘要: An image forming apparatus equipped with a first image forming unit, plural second image forming units, and a test-pattern image forming control unit for controlling the first and second image forming units which controls the first and second image forming units to form a test-pattern image, in such a manner that first and second marks of different densities are disposed adjacent to one another, based on test-pattern image data. This test-pattern image data includes first data serving to arrange a plurality of first color lines, which have each a predetermined line width, at a predetermined pitch by the first image forming unit, second data serving to form the first mark overlapping with the plural first color lines by the second image forming units, and third data serving to form the second mark displaced in a direction perpendicular to the plural first color lines. Before shipping the apparatus from a factory or when inspecting or repairing the apparatus at user's site, the customer engineer can easily grasps causes for possible positional errors using this simple test pattern and hence can cope with such trouble by exchanging or adjusting positions of parts comfortably and efficiently.

    摘要翻译: 一种具有第一图像形成单元,多个第二图像形成单元和测试图案图像形成控制单元的图像形成设备,用于控制第一和第二图像形成单元,其控制第一和第二图像形成单元以形成测试图形, 图案图像,使得不同密度的第一和第二标记基于测试图案图像数据彼此相邻设置。 该测试图案图像数据包括用于通过第一图像形成单元以预定间距排列具有每个预定线宽的多个第一颜色线的第一数据,用于形成与多个重叠的第一标记的第二数据 通过第二图像形成单元的第一颜色线,以及用于形成在垂直于多个第一颜色线的方向上移位的第二标记的第三数据。 在从工厂运送设备或在用户现场检查或修理设备时,客户工程师可以使用这种简单的测试图案轻松掌握可能的位置错误的原因,因此可以通过更换或调整零件的位置来舒适地 有效率的。

    Image forming apparatus
    4.
    发明授权
    Image forming apparatus 失效
    图像形成装置

    公开(公告)号:US06219496B1

    公开(公告)日:2001-04-17

    申请号:US09464450

    申请日:1999-12-16

    IPC分类号: G03G1501

    摘要: An image-forming device such as a full color printer is provided which is designed to correct the speed of a conveyer belt on which print sheets are transported or intervals between image-transferring units for compensating for a shift between colors. The image-forming device has a timer which measures an elapsed time from turning on of the device or release of a sleep mode, a print-off time and a print time and determines a correction value as a function of the times measured by the timer by look-up using a table.

    摘要翻译: 提供了诸如全彩色打印机的图像形成装置,其被设计为校正传送带上的传送带的速度或图像传送单元之间的间隔,以补偿颜色之间的偏移。 图像形成装置具有计时器,该计时器测量从打开设备或释放睡眠模式,打印时间和打印时间起的经过时间,并且确定作为由定时器测量的时间的函数的校正值 通过查找使用表。