公开(公告)号：US07969831B2

公开(公告)日：2011-06-28

申请号：US12205335

申请日：2008-09-05

Applicant: Soo-yong Kim

Inventor： Soo-yong Kim

IPC: G11B7/00

CPC classification number: G11B7/0037 ,  G11B7/0938

Abstract: A method of controlling a servo in an optical disc device and a servo control device using the method, in which the servo control device controls a servo for printing on a label surface of an optical disc and includes an optical pickup unit, an error signal generation unit, and a control unit. The optical pickup unit outputs a plurality of signals corresponding to a position of an object lens in response to light reflected from the label surface. The error signal generation unit outputs an error signal by selecting or combining one or more of the plurality of signals. The control unit adjusts the position of the object lens in response to the error signal. Therefore, because the position of the object lens can be adjusted with an increased range, the spot size of a beam condensed by the object lens can be adjusted within an increased range, and a data recording time can be reduced. Moreover, data retention characteristics and recording quality can be improved.

Abstract translation: 一种使用该方法控制光盘装置中的伺服控制方法和伺服控制装置，其中伺服控制装置控制伺服以在光盘的标签表面上进行打印，并且包括光学拾取单元，误差信号产生 单元和控制单元。 光学拾取单元响应于从标签表面反射的光输出对应于物镜的位置的多个信号。 误差信号生成单元通过选择或组合多个信号中的一个或多个来输出误差信号。 控制单元响应于误差信号来调节物镜的位置。 因此，由于能够以增加的范围调整物镜的位置，所以可以将由物镜聚光的光束的光斑尺寸调整到增大的范围内，并且可以降低数据记录时间。 此外，可以提高数据保持特性和记录质量。

公开(公告)号：US20090028589A1

公开(公告)日：2009-01-29

申请号：US12046625

申请日：2008-03-12

Applicant: Soo Yong KIM ,  Mun Bo Shim

Inventor： Soo Yong KIM ,  Mun Bo Shim

IPC: G03G15/01

CPC classification number: G03G15/757 ,  G03G21/186 ,  G03G2215/0145

Abstract: An image forming apparatus capable of minimizing color mis-registration due to runout of gears is disclosed. The image forming apparatus includes a plurality of photosensitive bodies having transfer points to transfer images onto a transfer object, a driving source to drive at least two photosensitive bodies of the plurality of photosensitive bodies, and a driving gear train to transmit driving power from the driving source to the at least two photosensitive bodies. The driving gear train includes photosensitive body shaft gears respectively connected to the photosensitive bodies driven by the driving source, and connecting gears to transmit the driving power to the photosensitive body shaft gears. When any one of the photosensitive body shaft gears is set to a reference photosensitive body shaft gear, the number of teeth of the connecting gear, which is disposed at a jth position from the reference photosensitive body shaft gear, is determined so that a value calculated from the following equation is substantially an integer. L π   D · 1 R j Here, D refers to a diameter of each of the photosensitive bodies, L refers to a distance between the transfer points of two adjacent photosensitive bodies, and Rj refers to a speed reduction ratio from the jth connecting gear to the reference photosensitive body shaft gear.

Abstract translation: 公开了一种能够最小化由于齿轮跳动引起的颜色失配的图像形成装置。 图像形成装置包括多个感光体，其具有将图像转印到转印体上的转印点，用于驱动多个感光体中的至少两个感光体的驱动源和驱动齿轮系，以从驱动 源至该至少两个感光体。 驱动齿轮系包括分别连接到由驱动源驱动的感光体的感光体轴齿轮和连接齿轮以将驱动力传递到感光体轴齿轮。 当感光体轴齿轮中的任何一个被设置为参考感光体轴齿轮时，确定设置在距基准感光体轴齿轮的第j个位置处的连接齿轮的齿数，使得计算出的值 从下面的等式基本上是一个整数。