公开(公告)号：US10466455B2

公开(公告)日：2019-11-05

申请号：US16020250

申请日：2018-06-27

Applicant: Palo Alto Research Center Incorporated

Inventor： Patrick Y. Maeda ,  Timothy D. Stowe

IPC: G02B26/08 ,  G02B17/00 ,  G02B27/30 ,  G02B27/14 ,  G02B27/10 ,  F21V8/00 ,  G03G15/04

Abstract: High resolution printing systems that utilize high power laser diode bars and digital mirror devices (DMD) require side-by-side stacking of illumination modules to stitching of the image from each module to form a longer total image width. An inline illumination optical system having a refractive prism and Total Internal Reflection (TIR) prism pair with an air gap along with a light guide transporting light beams at a compound angle to the prism pair eliminates the need for any axial rotation of the laser and light guide, and enables side-by-side module stacking. The illumination optical system includes an illumination module having a light source, the light guide, a DMD array and a Refractive TIR (RTIR) prism. The system also includes a DMD housing containing the DMD array and having a width within which the illumination module is confined to allow side-by-side stacking.

公开(公告)号：US09643397B2

公开(公告)日：2017-05-09

申请号：US14580108

申请日：2014-12-22

Applicant: Palo Alto Research Center Incorporated

Inventor： Timothy D. Stowe ,  Eric Peeters

IPC: B41F7/24 ,  B41F7/02 ,  B41F7/00 ,  B41F7/26 ,  B41F31/30 ,  B41F35/02

CPC classification number: B41F7/24 ,  B41F7/00 ,  B41F7/025 ,  B41F7/26 ,  B41F31/302 ,  B41F35/02 ,  B41M1/06 ,  B41P2227/70

Abstract: A reimageable layer of an imaging member is provided with a dampening fluid layer. The reimageable layer has specific properties such as composition, surface profile, and so on so as to be well suited for receipt and carrying the dampening fluid layer. An optical patterning subsystem such as a scanned modulated laser patterns the dampening fluid layer. Ink having a first set of properties such as color, composition, etc., is applied at an inking subsystem such that it selectively resides in voids formed by the patterning subsystem in the dampening fluid layer to thereby form an inked latent image. The inked latent image is then transferred to a substrate, and the reimageable surface cleaned. The process is repeated for a second ink having properties different than the first. Each ink image may successively be applied to the substrate, or a composite image may be formed then applied to the substrate.

公开(公告)号：US20160176110A1

公开(公告)日：2016-06-23

申请号：US14576159

申请日：2014-12-18

Applicant: Palo Alto Research Center Incorporated

Inventor： David K. Biegelsen ,  Timothy D. Stowe ,  Mandana Veiseh

IPC: B29C67/00

CPC classification number: B33Y30/00 ,  B29C64/112

Abstract: An ejector device that includes one or more ejectors comprises an ejector layer that spans at least one hollow area. The ejector layer has a first surface and an opposing second surface arranged to receive a viscous material with viscosity between 20 and 50,000 centipoise. The ejector layer includes a radiation absorber material configured to thermally expand without phase transition in response to heating by activation radiation transmitted to the first surface. Thermal expansion of the ejector layer causes displacement of the ejector layer and ejection of the material from the second surface of the ejector layer.

Abstract translation: 包括一个或多个喷射器的喷射器装置包括跨越至少一个中空区域的喷射器层。 喷射器层具有第一表面和相对的第二表面，其布置成接收粘度在20和50,000厘泊之间的粘性材料。 喷射器层包括辐射吸收体材料，该辐射吸收体材料被配置为响应于透射到第一表面的激活辐射的加热而热相变而不发生相变。 喷射器层的热膨胀导致喷射器层的位移和材料从喷射器层的第二表面喷出。

公开(公告)号：US20210237423A1

公开(公告)日：2021-08-05

申请号：US17233908

申请日：2021-04-19

Applicant: Palo Alto Research Center Incorporated

Inventor： David K. Biegelsen ,  Timothy D. Stowe ,  Mandana Veiseh

IPC: B33Y30/00 ,  B29C64/112

Abstract: An ejector device that includes one or more ejectors comprises an ejector layer that spans at least one hollow area. The ejector layer has a first surface and an opposing second surface arranged to receive a viscous material with viscosity between 20 and 50,000 centipoise. The ejector layer includes a radiation absorber material configured to thermally expand without phase transition in response to heating by activation radiation transmitted to the first surface. Thermal expansion of the ejector layer causes displacement of the ejector layer and ejection of the material from the second surface of the ejector layer.

公开(公告)号：US10589515B2

公开(公告)日：2020-03-17

申请号：US15244841

申请日：2016-08-23

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： Timothy D. Stowe ,  Gregory B. Anderson ,  Martin J. Sheridan

IPC: B41F35/06 ,  B41F35/02 ,  B41F7/02 ,  B41M1/08

Abstract: A variable lithographic cleaning apparatus, system and method works on the principle that dust and ink residue may be transferred from a lower surface energy reimageable conformable blanket surface to a higher surface energy surface low durometer cleaning member, such as the tacky roller, and then to an even higher surface energy cleaning member, such as the hard roller, which is hard and robust to scratching. The hard roller can then been scrubbed clean by an ink flushing device having a third cleaning member, such as a melamine sponge, wetted with a cleaning solution with the hard roller dried upon each rotation.

公开(公告)号：US09477161B2

公开(公告)日：2016-10-25

申请号：US14186562

申请日：2014-02-21

Applicant: Palo Alto Research Center Incorporated

Inventor： Timothy D. Stowe ,  David K. Biegelsen ,  Sourobh Raychaudhuri

IPC: G03F7/20

CPC classification number: G03F7/70891 ,  G03F7/70291 ,  G03F7/70425 ,  G03F7/7055 ,  G03F7/70558 ,  G03F7/70858 ,  G03F7/70875

Abstract: A method and system is provided to extend operational life of a mirror array of an image generating system, wherein the image generating system further includes a high intensity power light source to cause light to impinge on the mirror array, sufficient to cause deleterious plastic deformation of associated hinges of the mirror array, and an image output generating section configured to receive light from the mirror array. Image date is received by the image generating system image data to control mirrors of the mirror array and to generate an output image. A required level of illumination is provided from the mirror array to the image output generating section over a predetermined time period, in accordance with the received image data. Then during at least a portion of the same predetermined time period of providing the required level of illumination from the mirror array to the image output generating section, de-stress switching operations are performed for selected ones of the mirrors of the mirror array to reduce the plastic deformation of the associated hinges. Next, an output image is generated based on the received image data, wherein the de-stress switching operations occurring during at least a portion of the providing of the desired level of illumination is undetected.

Abstract translation: 提供了一种方法和系统来延长图像产生系统的反射镜阵列的使用寿命，其中图像产生系统还包括高强度光源，以使光线撞击在镜阵列上，足以引起有害的塑性变形 反射镜阵列的相关联的铰链，以及被配置为从反射镜阵列接收光的图像输出生成部。 图像生成系统图像数据接收图像日期以控制反射镜阵列的反射镜并生成输出图像。 根据接收到的图像数据，在预定时间段内从镜阵列到图像输出生成部分提供所需的照明水平。 然后在从反射镜阵列向图像输出产生部分提供所需等级的照明的相同预定时间段的至少一部分中，对反射镜阵列的所选反射镜执行去应力切换操作，以减少 相关铰链的塑性变形。 接下来，基于接收到的图像数据生成输出图像，其中在提供期望的照明级别的至少一部分期间发生的去应力切换操作未被检测到。

公开(公告)号：US11465401B2

公开(公告)日：2022-10-11

申请号：US17233908

申请日：2021-04-19

Applicant: Palo Alto Research Center Incorporated

Inventor： David K. Biegelsen ,  Timothy D. Stowe ,  Mandana Veiseh

IPC: B33Y30/00 ,  B29C64/112

Abstract: An ejector device that includes one or more ejectors comprises an ejector layer that spans at least one hollow area. The ejector layer has a first surface and an opposing second surface arranged to receive a viscous material with viscosity between 20 and 50,000 centipoise. The ejector layer includes a radiation absorber material configured to thermally expand without phase transition in response to heating by activation radiation transmitted to the first surface. Thermal expansion of the ejector layer causes displacement of the ejector layer and ejection of the material from the second surface of the ejector layer.

公开(公告)号：US10471752B2

公开(公告)日：2019-11-12

申请号：US15230954

申请日：2016-08-08

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： Timothy D. Stowe ,  Gregory B. Anderson

IPC: B41F1/18 ,  B41M1/06 ,  B41F31/00 ,  B41F31/02 ,  B41F31/04

Abstract: A chamber blade system maximizes ink flow at an anilox doctor blade by including a heating element adjacent the doctor blade to heat ink adjacent the blade. The heating element may be a heat strip next to an anilox doctor blade that heats the ink adjacent the doctor blade and temporarily reduces the ink viscosity to improve the flow of ink in the vicinity of the blade. Doctoring blades with a ceramic tip coating may be configured to allow a small amount of controlled ink flow through that can wet the lands thereby reducing the hydrodynamic back pressures and friction when trying to force the ink into anilox cells.

公开(公告)号：US10328688B2

公开(公告)日：2019-06-25

申请号：US15496709

申请日：2017-04-25

Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

Inventor： Naveen Chopra ,  Peter Gordon Odell ,  Steven E. Ready ,  Eric Peeters ,  Timothy D. Stowe ,  Ashish Pattekar ,  David K. Biegelsen

IPC: B41F35/06 ,  B08B3/08 ,  B08B3/10 ,  B41F35/02 ,  B41F7/04 ,  B41F7/24 ,  B41F7/30 ,  B41N3/08

Abstract: A dampening fluid useful in offset ink printing applications contains water and a surfactant whose structure can be altered. The alteration in structure aids in reducing accumulation of the surfactant on the surface of an imaging member. The surfactant can be decomposed, switched between cis-trans states, or polymerizable with ink that is subsequently placed on the surface.

公开(公告)号：US10042145B2

公开(公告)日：2018-08-07

申请号：US15400848

申请日：2017-01-06

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： Patrick Y. Maeda ,  Timothy D. Stowe

IPC: G02B26/08 ,  G02B17/00 ,  G02B27/30 ,  G02B27/14 ,  G02B27/10 ,  F21V8/00 ,  G03G15/04

Abstract: High resolution printing systems that utilize high power laser diode bars and digital mirror devices (DMD) require side-by-side stacking of illumination modules to stitching of the image from each module to form a longer total image width. An inline illumination optical system having a refractive prism and Total Internal Reflection (TIR) prism pair with an air gap along with a light guide transporting light beams at a compound angle to the prism pair eliminates the need for any axial rotation of the laser and light guide, and enables side-by-side module stacking. The illumination optical system includes an illumination module having a light source, the light guide, a DMD array and a Refractive TIR (RTIR) prism. The system also includes a DMD housing containing the DMD array and having a width within which the illumination module is confined to allow side-by-side stacking.