公开(公告)号：US08774656B2

公开(公告)日：2014-07-08

申请号：US13474890

申请日：2012-05-18

Applicant: Masahiko Sato ,  Toshio Yanata ,  Masafumi Hashiguchi ,  Masataka Akaishi ,  Sohichiroh Naka ,  Norifumi Yamamoto

Inventor： Masahiko Sato ,  Toshio Yanata ,  Masafumi Hashiguchi ,  Masataka Akaishi ,  Sohichiroh Naka ,  Norifumi Yamamoto

IPC: G01J1/42

CPC classification number: H04N1/1135 ,  H04N1/047 ,  H04N1/506 ,  H04N2201/04713 ,  H04N2201/04722 ,  H04N2201/04758

Abstract: An image position detector includes a light emitting element to emit light to an image on an image carrier, a first light receiving element to receive a specular reflection of light from a surface of the image carrier and output a first light receiving signal, and a second light receiving element to receive a diffuse reflection of light from a surface of the image and output a second light receiving signal. The image position detector is configured to find the end position of the image according to a multiplied value obtained by multiplying values of the first and second light receiving signals by a constant coefficient.

Abstract translation: 图像位置检测器包括发光元件以对图像载体上的图像发光，第一光接收元件，用于接收来自图像载体的表面的光的镜面反射并输出第一光接收信号，第二光接收元件 光接收元件，用于接收来自图像表面的光的漫反射，并输出第二光接收信号。 图像位置检测器被配置为根据通过将第一和第二光接收信号的值乘以常数系数获得的相乘值来找到图像的结束位置。

公开(公告)号：US07658462B2

公开(公告)日：2010-02-09

申请号：US10232314

申请日：2002-09-03

Applicant: Yoon-seop Eom

Inventor： Yoon-seop Eom

IPC: B41J29/393

CPC classification number: H04N1/506 ,  G03G15/0189 ,  G03G15/0194 ,  G03G2215/0161 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04722 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04749 ,  H04N2201/04758

Abstract: An apparatus to control color registration and image density and a method of calculating a color registration error. The apparatus includes registration marks formed on a transfer belt such that each of the registration marks includes a scan direction component and a slanting direction component at an angle with respect to both the scan direction and the cross-scan direction. The apparatus further includes image density marks formed on the transfer belt, having predetermined image densities, and a registration and image density sensor provided above the registration marks and the image density marks to radiate beams onto the registration marks and the image density marks. The sensor receives beams reflected from the registration marks and the image density marks to produce detection signals, and obtains registration information and image density information from the detection signals. Accordingly, X-offset, Y-offset, printing width error, and skew can be simultaneously compensated for using a single apparatus.

公开(公告)号：US07354128B2

公开(公告)日：2008-04-08

申请号：US11088040

申请日：2005-03-23

Applicant: Yoshikazu Koike

Inventor： Yoshikazu Koike

IPC: B41J29/38

CPC classification number: H04N1/047 ,  B41J3/28 ,  B41J3/543 ,  B41J11/007 ,  B41J11/008 ,  B41J29/38 ,  H04N1/12 ,  H04N1/193 ,  H04N1/506 ,  H04N2201/02439 ,  H04N2201/0315 ,  H04N2201/0471 ,  H04N2201/0472 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04741 ,  H04N2201/04758 ,  H04N2201/04789 ,  H04N2201/04794

Abstract: To make it possible to improve a printing speed.When printing a plurality of printing sheets 14, it is possible to decrease the time for generating correction data by using a pair of correction data values to print the printing sheets 14. Therefore, it is possible to decrease the time for printing each printing sheet 14 even compared to the case of a method for generating correction data for each printing sheet 14. As a result, even when the number of sheets to be printed is large, it is possible to improve a printing speed. Moreover, when meandering states of the printing sheet 14 are changed, it is possible to prevent disorder of a printed image due to meandering of the printing sheet 14 for a long time by newly generating correction data. Furthermore, by generating (updating) only a part of correction data when newly generating the correction data, it is possible to decrease the time for generating the correction data and improve a printing speed.

Abstract translation: 以提高打印速度。 当打印多个打印纸张14时，可以通过使用一对校正数据值来减少用于产生校正数据的时间来打印打印纸张14。 因此，即使与用于生成每个打印纸张14的校正数据的方法的情况相比，也可以减少打印每个打印纸张14的时间。 结果，即使要打印的纸张数量大，也可以提高打印速度。 此外，当打印纸14的曲折状态改变时，可以通过新产生校正数据来防止长时间由于打印纸14的曲折而导致的打印图像的混乱。 此外，通过在新生成校正数据时仅产生（更新）一部分校正数据，可以减少生成校正数据的时间并提高打印速度。

公开(公告)号：US20070103728A1

公开(公告)日：2007-05-10

申请号：US11554655

申请日：2006-10-31

Applicant: ATSUSHI OTANI

Inventor： ATSUSHI OTANI

IPC: G06K15/00

CPC classification number: G03G15/04018 ,  G03G2215/0158 ,  G03G2215/0468 ,  H04N1/3878 ,  H04N1/506 ,  H04N2201/0082 ,  H04N2201/0315 ,  H04N2201/04713 ,  H04N2201/04722 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04758 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04793

Abstract: This invention provides an image forming apparatus capable of preventing image omission caused by registration error correction, a control method therefor, and a program. Error amount information is acquired which is stored in a storage medium and represents the error amount of the scanning line of exposure light in the exposure scanning direction on an image carrier. The image data is modified on the basis of the acquired error amount information. A masked area for restricting the output position of an image visualized on the printing medium is modified on the basis of the modification amount of the modified image data.

Abstract translation: 本发明提供了能够防止由注册纠错引起的图像遗漏，其控制方法和程序的图像形成装置。 获取存储在存储介质中并且表示在图像载体上的曝光扫描方向上的曝光光的扫描线的误差量的误差量信息。 基于获取的误差量信息来修改图像数据。 基于修改图像数据的修改量来修改用于限制在打印介质上可视化的图像的输出位置的掩蔽区域。

公开(公告)号：US20050207740A1

公开(公告)日：2005-09-22

申请号：US11085017

申请日：2005-03-21

Applicant: Kimitake Fukushima

Inventor： Kimitake Fukushima

IPC: G03B27/46 ,  B65H7/06 ,  H04N1/00 ,  H04N1/047 ,  H04N1/387 ,  H04N5/76

CPC classification number: H04N1/3878 ,  H04N1/00002 ,  H04N1/00015 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/0005 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00076 ,  H04N1/00087 ,  H04N1/0009 ,  H04N1/047 ,  H04N2201/04756 ,  H04N2201/04758 ,  H04N2201/04789 ,  H04N2201/04791

Abstract: A printer processor prints out two sheets of test prints by printing a test pattern on two recording sheets of different lengths. The test pattern consists of eight straight-linear lines that are parallel to a main scan direction or a sub scan direction of an exposure section. Dimensions of designated portions of the test pattern are measured on each of the test prints, to detect skew characteristics of the recording sheets, deviations of print starting positions in the main and sub scan directions and fluctuations in transport speed of the recording sheets. Based on the detected values, a skew correcting section, the exposure section and a conveyer device for the recording sheets are controlled to correct skew of the recording sheets, the print starting positions in the main and sub scan directions and the transport speed.

Abstract translation: 打印机处理器通过在两张不同长度的记录纸上打印测试图案来打印出两张测试图。 测试图案由平行于曝光部分的主扫描方向或副扫描方向的8条直线线构成。 在每个测试印刷品上测量测试图案的指定部分的尺寸，以检测记录纸张的偏斜特性，主扫描和副扫描方向上的打印开始位置的偏差以及记录纸张的传送速度的波动。 基于检测值，控制偏斜校正部分，曝光部分和用于记录片材的传送装置，以纠正记录片材的偏斜，主扫描和副扫描方向上的打印开始位置以及传送速度。

公开(公告)号：US06947515B2

公开(公告)日：2005-09-20

申请号：US10024416

申请日：2001-12-21

Applicant: Michael B. Neary

Inventor： Michael B. Neary

IPC: H03L7/189 ,  H03L7/199 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H03L7/06

CPC classification number: H03L7/189 ,  H03L7/199 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04758 ,  H04N2201/04772 ,  H04N2201/04794 ,  H04N2201/04798

Abstract: A method for calibrating a VCO within a phase locked loop circuit is disclosed. First, a DAC output voltage is set to its minimum, and a counter M is adjusted until a comparator is its threshold voltage. Next, the DAC is set to another voltage, and counter M is again adjusted to the comparator threshold. This process is repeated for as many steps as desired. When the phase locked loop circuit requests an instantaneous frequency, an interpolation of the requested frequency against the curve created by the above-described method gives the value required by the DAC.

Abstract translation: 公开了一种在锁相环电路内校准VCO的方法。 首先，DAC输出电压被设置为最小值，并且调整计数器M直到比较器为其阈值电压。 接下来，将DAC设置为另一电压，并且将计数器M再次调整为比较器阈值。 根据需要重复这个步骤。 当锁相环电路请求瞬时频率时，根据上述方法产生的曲线对所请求频率的插值给出DAC需要的值。

公开(公告)号：US20030161058A1

公开(公告)日：2003-08-28

申请号：US10369472

申请日：2003-02-20

Applicant: Konica Corporation

Inventor： Mitsuo Azumai

IPC: G02B001/00

CPC classification number: H04N1/047 ,  H04N2201/0082 ,  H04N2201/0091 ,  H04N2201/0093 ,  H04N2201/0471 ,  H04N2201/04717 ,  H04N2201/04751 ,  H04N2201/04758

Abstract: An image forming apparatus includes: a pattern generator for generating pattern data for recording a set of test patterns at respective specified positions thereof on the recording sheet; a positional deviation detector for detecting a positional deviation at each characteristic point included in the set of test patterns generated by the pattern generator, in the image data read from the recording sheet on which the image containing the set of test patterns has been formed, by comparing with a position of the proper output at each characteristic point; and a deviation correcting device for calculating operational values for a correction of each pixel with reference to the respective positional deviations of the characteristic points detected by the positional deviation detector and for carrying out a processing to eliminate the positional deviation of each pixel at the time of image formation by using the operational values.

Abstract translation: 一种图像形成装置包括：图案发生器，用于产生图案数据，用于在记录纸上的各个指定位置记录一组测试图案; 一个位置偏差检测器，用于检测由图案发生器产生的测试图形集合中包括的图像数据中包含的每个特征点处的位置偏差，该图像数据是从其上已经形成了包含该组测试图案的图像的记录片材读出的图像数据中的， 与每个特征点处的适当输出的位置进行比较; 以及偏差校正装置，用于参考由位置偏差检测器检测的特征点的各个位置偏差来计算每个像素的校正的操作值，并执行消除每个像素时的位置偏差的处理 通过使用操作值形成图像。

公开(公告)号：US20030112522A1

公开(公告)日：2003-06-19

申请号：US10356175

申请日：2003-01-30

Applicant: Rohm Co., Ltd.

Inventor： Hisayoshi Fujimoto

IPC: G02B027/10

CPC classification number: G02B3/0031 ,  G02B3/005 ,  G02B3/0056 ,  G02B3/0062 ,  G02B3/0068 ,  G02B3/0075 ,  H04N1/0314 ,  H04N1/0318 ,  H04N1/1215 ,  H04N2201/03112 ,  H04N2201/0312 ,  H04N2201/03133 ,  H04N2201/03141 ,  H04N2201/03145 ,  H04N2201/0315 ,  H04N2201/03154 ,  H04N2201/0317 ,  H04N2201/03187 ,  H04N2201/04758

Abstract: A lens unit (U15) includes a housing (45), an upper and a lower lens arrays (A1null, A2null), and a first and a second prisms (4A, 4B). Each of the lens arrays includes a plurality of lenses, a light-shielding member (4), and a plurality of positioning projections, all of which are integral with each other. Downwardly traveling light which enters the housing (45) through a first slit (45c) formed at an upper portion of the housing (45) is directed upward by the first prism (4A) to pass through the two lens arrays (A1null, A2null). The light is then directed downward by the second prism (4B) to exit the housing through a second slit (45d) formed at a lower portion of the housing (45).

Abstract translation: 透镜单元（U15）包括壳体（45），上部和下部透镜阵列（A1'，A2'）以及第一和第二棱镜（4A，4B）。 每个透镜阵列包括多个透镜，遮光构件（4）和多个定位突起，它们都彼此成一体。 通过形成在壳体（45）的上部的第一狭缝（45c）进入壳体（45）的向下行进的光由第一棱镜（4A）向上引导以穿过两个透镜阵列（A1'，A2 '）。 然后，光通过第二棱镜（4B）向下引导，通过形成在壳体（45）的下部的第二狭缝（45d）离开壳体。

公开(公告)号：US06335748B1

公开(公告)日：2002-01-01

申请号：US09306418

申请日：1999-05-06

Applicant: Michael Robert Furst

Inventor： Michael Robert Furst

IPC: B41J2385

CPC classification number: G03G15/0152 ,  G03G15/0168 ,  G03G2215/00164 ,  G03G2215/0158 ,  G03G2215/017 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/506 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04737 ,  H04N2201/04743 ,  H04N2201/04744 ,  H04N2201/04758 ,  H04N2201/04794

Abstract: Color imaging methods and systems allow each color image to be registered in a composite manner. An image-on-image registration controller of an image forming device adjusts the control signals which control the output of image data to reduce or eliminate image registration offsets. In particular, two separate feedback loops are combined to monitor and adjust image registration without going off-line for a set-up procedure. These two feedback loops include a dynamic skew control feedback loop, which monitors and adjusts the edge position of the photoreceptor belt to infer lateral registration, and a direct image registration feedback loop, which monitors and adjusts relative image registration directly. The control signals are adjusted based on a determined image registration offset. The image processing device outputs an image based on the control signals adjusted based on a determined image registration offset. As the image's registration changes, the image-on-image registration controller determines and applies the necessary adjustments to the controls signals to keep the differently-colored images registered throughout the print run. The systems and methods permit many off-line set-up procedures the eliminated and increase the image quality by constantly adjusting for registration offsets.

Abstract translation: 彩色成像方法和系统允许以复合方式登记每个彩色图像。 图像形成装置的图像对准控制器调节控制图像数据的输出以减少或消除图像配准偏移的控制信号。 特别地，组合两个单独的反馈回路以监视和调整图像配准，而不需要离线进行设置过程。 这两个反馈回路包括动态偏移控制反馈回路，其监视和调整感光带的边缘位置以推断横向对准，以及直接图像配准反馈回路，其直接监视和调整相对图像配准。 基于所确定的图像配准偏移来调整控制信号。 图像处理装置基于基于确定的图像配准偏移调整的控制信号来输出图像。 随着图像的注册变化，图像对准注册控制器确定并对控制信号进行必要的调整，以便在打印运行期间注册不同颜色的图像。 系统和方法允许许多离线设置程序被消除，并通过不断调整注册偏移来提高图像质量。

公开(公告)号：US5719404A

公开(公告)日：1998-02-17

申请号：US637048

申请日：1996-04-24

Applicant: Jenn-Tsair Tsai

Inventor： Jenn-Tsair Tsai

IPC: H04N1/053 ,  H04N1/10 ,  H04N1/193 ,  G01N21/86

CPC classification number: H04N1/053 ,  H04N1/1017 ,  H04N1/193 ,  H04N2201/04703 ,  H04N2201/04758

Abstract: A method and apparatus is used on a flatbed scanner for calibrating the horizontal starting point of a document which is to be scanned by the flatbed scanner. The flatbed scanner is of the type having a light-sensing device as a CCD or CIS device consisting of a linear array of light-sensing cells and a movable scan head. In the method and apparatus, two reflective marks are fixed at a predetermined calibrating position to the front edge of the document. During the calibration process, the movable scan head is moved to the calibrating position where it senses the two reflective marks to thereby determine the distance in pixels between the first light-sensing cell on the linear array and the first reflective mark, and also the distance in pixel between the two reflective marks. The distance in pixel between the first reflective mark and the horizontal starting point of the document can then be determined. After that, the distance in pixels between the first light-sensing cell on the linear array and the horizontal starting point of the document is determined to thereby determine which light-sensing cell on the linear array is to be used as the starting light-sensing cell corresponding to the horizontal starting point of the document. The movable scan head is then further moved to the front edge of the document where the scan process over the document is started.

Abstract translation: 在平板扫描器上使用方法和装置来校准要由平板扫描仪扫描的文件的水平起点。 平板扫描器是具有由感光单元的线阵列和可移动扫描头组成的CCD或CIS装置的感光装置的类型。 在该方法和装置中，两个反射标记固定在预定的校准位置到文件的前边缘。 在校准过程中，可移动扫描头移动到校准位置，在该位置检测两个反射标记，从而确定线阵列上的第一感光单元与第一反射标记之间的距离（以像素为单位），以及距离 在两个反射标记之间的像素中。 然后可以确定文档的第一反射标记和水平起始点之间的像素间距。 之后，确定线性阵列上的第一感光单元与原稿的水平起点之间的像素间距，从而确定将线阵列上的哪个感光单元用作起始感光 对应于文档的水平起点的单元。 然后可移动扫描头进一步移动到原稿的扫描处理开始的文档的前边缘。