公开(公告)号：US6072973A

公开(公告)日：2000-06-06

申请号：US307030

申请日：1999-05-07

Applicant: Woo-yong Park

Inventor： Woo-yong Park

IPC: B41J2/385 ,  G03G15/11 ,  G03G15/10 ,  G03G21/00

CPC classification number: G03G15/11

Abstract: A squeeze roller elevating apparatus for a liquid electrophotographic printer in which a squeeze roller selectively presses a photoreceptor belt, the photoreceptor belt being supported by a belt, the apparatus including a squeeze frame fixed to the belt frame to support the squeeze roller, the squeeze roller being capable of elevating, and an elevating mechanism for elevating the squeeze roller. The elevating mechanism includes a driving motor, a winch drum being rotated by the driving motor, a mobile pulley rotatably installed at one end portion of a rotation shaft of the squeeze roller, and a wire having one end thereof fixed to the squeeze frame and the other end thereof wound about the winch drum, to support the mobile pulley, wherein, when the winch drum is rotated by the driving motor, the wire is wound or released so that the mobile pulley and the squeeze roller ascend or descend, respectively.

Abstract translation: 一种用于液体电子照相打印机的挤压辊升降装置，其中挤压辊选择性地按压感光带，感光带由带支撑，该装置包括固定在带框架上的挤压框架以支撑挤压辊，挤压辊 能够升降的升降机构，以及用于升降挤压辊的升降机构。 升降机构包括：驱动电动机，由驱动电动机旋转的绞盘鼓;可旋转地安装在挤压辊的旋转轴的一端部的移动带轮和一端固定在挤压机架上的线， 其另一端围绕绞盘鼓缠绕，以支撑移动滑轮，其中当绞盘鼓被驱动电机旋转时，线被卷绕或释放，使得可动滑轮和挤压辊分别上升或下降。

公开(公告)号：US6058286A

公开(公告)日：2000-05-02

申请号：US362677

申请日：1999-07-29

Applicant: Woo-yong Park

Inventor： Woo-yong Park

IPC: B41J2/435 ,  G03G15/16

CPC classification number: G03G15/1605 ,  G03G2215/1695

Abstract: A transfer unit of an electrophotographic printer, includes a base frame; a first lever which is pivotally installed at the base frame, and by which a transfer roller is supported, the transfer roller rotating while closely contacting a photosensitive belt and to which an image on the photosensitive belt is transferred; and a second lever which is pivotally installed at the base frame, and by which a fixing roller is supported, the fixing roller pressing a paper passing through between the transfer roller and the fixing roller against the transfer roller while rotating in contact with the transfer roller, and fixing an image on the transfer roller onto the paper. A first elastic biasing mechanism is provided for elastically biasing the first lever and the second lever so that the transfer roller and the fixing roller can be separated from each other; a second elastic biasing mechanism is provided for elastically biasing the first lever so that the transfer roller can separate from the photosensitive belt; and a wire is provided one end of which is fixed to a winding gear rotatably installed at the base frame, and the other end of which is fixed to the first lever, and which is connected to the first lever and the second lever so that the transfer roller and the fixing roller, and the photosensitive belt approach each other while overcoming the elastic biasing forces of the first and second elastic biasing mechanisms.

Abstract translation: 电子照相打印机的传送单元，包括基架; 第一杠杆，其枢转地安装在基架上，通过该第一杠杆支撑转印辊，转印辊在感光带紧密接触并且感光带上的图像被转印到其上的同时旋转; 以及第二杠杆，其枢转地安装在基架上，并且定影辊被支撑，定影辊将通过转印辊和定影辊之间的纸张压靠在转印辊上，同时与转印辊接触转动 并且将转印辊上的图像固定到纸上。 提供第一弹性偏置机构用于弹性地偏置第一杆和第二杆，使得转印辊和定影辊可以彼此分离; 提供第二弹性偏置机构，用于弹性偏置第一杆，使得转印辊可以与感光带分离; 并且其一端设置在可旋转地安装在基架上的卷线齿轮上，并且其另一端固定在第一杆上，并连接到第一杆和第二杆上， 转印辊和定影辊，并且感光带在克服第一和第二弹性偏置机构的弹性偏压力的同时彼此接近。

公开(公告)号：US06650856B2

公开(公告)日：2003-11-18

申请号：US09953290

申请日：2001-09-17

Applicant: Hyeong-jin Ahn ,  Cheol-young Han ,  Woo-yong Park ,  Seung-young Byun ,  Myung-ho Kyung

Inventor： Hyeong-jin Ahn ,  Cheol-young Han ,  Woo-yong Park ,  Seung-young Byun ,  Myung-ho Kyung

IPC: G03G1510

CPC classification number: G03G15/11

Abstract: A liquid electrophotographic printer employs a continuously circulating photoreceptor web having a non-image region with a potential higher than an image region. A laser scanner forms a latent electrostatic image in the image region, and a development unit develops the latent image using an ink having toner particles dispersed in a liquid carrier. The development unit includes a developer roller with a surface potential in between that of the image and non-image region for forming the toner image by attaching the toner particles to the image region; a toner removal roller with a surface potential between that of the image and non-image regions after they pass through the developer roller, for removing toner particles remaining in a liquid carrier film in the non-image region; and a squeeze roller with a surface potential higher than any of the foregoing, for squeezing the liquid carrier out of the toner image by compression.

公开(公告)号：US06349186B1

公开(公告)日：2002-02-19

申请号：US09659458

申请日：2000-09-11

Applicant: Woo-yong Park ,  Kwang-ho No

Inventor： Woo-yong Park ,  Kwang-ho No

IPC: G03G1508

CPC classification number: G03G15/101

Abstract: There are provided a method for controlling the mode of a developing station of a liquid electrophotographic printer and a development roller driving apparatus therefor. In the controlling method, a printing mode, a drip line removal mode and a home mode are sequentially performed, and a development roller is subjected to racing in the home mode to be cleaned. Since the development roller is cleaned in the home mode in which the development roller is spaced apart from a photosensitive belt, the photosensitive belt is not contaminated by the development roller while cleaning the development roller. Also, the cleaning of the development roller is performed after completing a drip line removal mode, so sufficient cleaning time can be obtained. The development roller driving apparatus for implementing the controlling method includes a motor which is a driving power source, a reduction gear train for reducing and transmitting power of the motor, a power relay gear engaged with the reduction gear train, and a link/gear assembly for transmitting the power relayed by the power relay gear to the development roller gear. Accordingly, the development roller can be rotated in any position corresponding to the printing mode, the drip line removal mode or the home mode. Therefore, the cleaning of a development roller is allowed in the home mode.

Abstract translation: 提供了一种用于控制液体电子照相打印机的显影站的模式的方法及其显影辊驱动装置。 在控制方法中，依次执行打印模式，滴水线去除模式和家庭模式，并且显影辊在家用模式下进行赛车以进行清洁。 由于显影辊在显影辊与感光带间隔开的家用模式下被清洁，所以在清洁显影辊的同时，感光带不被显影辊污染。 此外，在完成滴水线去除模式之后执行显影辊的清洁，因此可以获得足够的清洁时间。 用于实现该控制方法的显影辊驱动装置包括作为驱动电源的电动机，用于减小和传递电动机的功率的减速齿轮系，与减速齿轮系啮合的动力传动齿轮，以及连杆/齿轮组件 用于将由动力继电器齿轮传递的动力传递到显影辊齿轮。 因此，显影辊可以在对应于打印模式，滴水线去除模式或家庭模式的任何位置旋转。 因此，在家庭模式中允许清洁显影辊。

公开(公告)号：US06305860B1

公开(公告)日：2001-10-23

申请号：US09656135

申请日：2000-09-06

Applicant: Woo-yong Park

Inventor： Woo-yong Park

IPC: B41J726

CPC classification number: G03G15/11

Abstract: A squeezing apparatus of a liquid electrophotographic printer includes a squeezing roller for squeezing out and removing the carrier from a developer which is applied on a photosensitive belt by its passive-rotational movement while being pressed into tight contact with the photosensitive belt at a certain pressure together with a squeezing backup roller, a squeezing brush selectively coming in contact with the outer circumference of the squeezing roller, for cleaning the squeezing roller by being rotated by a separate driving section, and a squeezing roller slip prevention mechanism disposed on both ends of a shaft of the squeezing roller to come in tight contact with the squeezing backup roller during the pressing of the squeezing roller, for preventing any occurrence of slip of the squeezing roller with respect to the photosensitive belt. The squeezing roller slip prevention mechanism includes a friction roll in friction contact with the squeezing backup roller, a bush bearing for supporting the friction roll with respect to the shaft of the squeezing roller, and an one-way bearing disposed between the bush bearing and the squeezing roller, for permitting free backward-rotation of the squeezing roller with respect to the friction roll in the drip line removing mode.

Abstract translation: 液体电子照相打印机的挤压装置包括挤压辊，用于挤压和移除载体，该显影剂通过其被动旋转运动施加在感光带上，同时以一定压力与感光带紧密接触 通过挤压支撑辊，挤压刷选择性地与挤压辊的外周接触，用于通过单独的驱动部分旋转来清洁挤压辊，以及设置在轴的两端的挤压辊防滑机构 的挤压辊在挤压辊的挤压期间与挤压支承辊紧密接触，以防止挤压辊相对于感光带发生滑动。 挤压辊防滑机构包括与挤压支承辊摩擦接触的摩擦辊，用于相对于挤压辊的轴支撑摩擦辊的衬套轴承，以及设置在衬套轴承和衬套轴承之间的单向轴承 挤压辊，用于允许挤压辊相对于摩擦辊在滴水线去除模式中自由反向旋转。

公开(公告)号：US06198894B1

公开(公告)日：2001-03-06

申请号：US09492283

申请日：2000-01-27

Applicant: Woo-yong Park

Inventor： Woo-yong Park

IPC: G03G1510

CPC classification number: G03G15/11

Abstract: An apparatus for driving a squeegee roller of a liquid electrophotographic printer including a squeegee gear coaxially installed at one shaft end of the squeegee roller, a driving gear installed such that in a state where the squeegee roller contacts the photoreceptor belt, the center of the rotation shaft thereof is positioned on a plane perpendicular to the elevating direction of the squeegee roller and passing through the center of the rotation shaft of the squeegee roller, to be engaged with the squeegee roller, and a driving source having an output shaft for rotating the driving gear to drive the squeegee roller to rotate in a reverse direction to the circulating direction of the photoreceptor belt. Therefore, even when a drip line removal mode of the printer is terminated to be switched to a stop mode, the squeegee roller does not stop but keeps rotating in reverse while it is in the course of being lowered from the photoreceptor belt, thereby removing a drip line on the photoreceptor belt as accurately as possible.

Abstract translation: 一种用于驱动液体电子照相打印机的刮板辊的装置，其包括同轴地安装在刮板辊的一个轴端的刮板齿轮，驱动齿轮安装成使得在刮板辊接触感光带的状态下，旋转中心 其轴位于与刮板辊的升降方向垂直的平面上并穿过刮板辊的旋转轴的中心以与刮板辊接合，以及驱动源，其具有用于旋转驱动的输出轴 驱动刮板辊沿与感光带的循环方向相反的方向旋转。 因此，即使当打印机的滴水线去除模式被终止以切换到停止模式时，刮板辊也不会停止，而是在从感光带降低的过程中继续旋转，从而去除 感光带上的滴线尽可能准确。