公开(公告)号：US20220227122A1

公开(公告)日：2022-07-21

申请号：US17152597

申请日：2021-01-19

申请人： Xerox Corporation ,  Palo Alto Research Center Incorporated

发明人： Kathryn F. MURPHY ,  Thomas WUNDERER ,  Anne PLOCHOWIETZ ,  David K. BIEGELSEN ,  Joerg MARTINI ,  David Mathew JOHNSON ,  Palghat S. RAMESH

IPC分类号： B41F31/02 ,  B41M1/06 ,  B41F3/34 ,  B41F7/02 ,  B41F33/00

摘要： Ink-based digital printing systems useful for ink printing include a rotatable charge-retentive reimageable surface layer configured to receive a layer of fountain solution. The fountain solution is carried to the charge retentive surface by a fog or mist including fountain solution aerosol particles, dispersed gas particles, and charge directors that impart charge to the fountain solution aerosol particles. The charge-retentive reimageable surface may be charged to a uniform potential, and selectively discharged using an ROS according to image data to form an electrostatic latent image. The charged fountain solution adheres to portions of the charge-retentive reimageable surface according to the electrostatic latent image to form a fountain solution image thereon. The fountain solution image can be partially transferred to an imaging blanket, where the fountain solution image is inked. The resulting ink image may be transferred to a print substrate.

公开(公告)号：US20220227125A1

公开(公告)日：2022-07-21

申请号：US17579381

申请日：2022-01-19

申请人： Palo Alto Research Center Incorporated ,  Xerox Corporation

发明人： David K. BIEGELSEN ,  Joerg MARTINI ,  Gregory B. ANDERSON ,  Jengping LU ,  Palghat S. RAMESH ,  Anne PLOCHOWIETZ

IPC分类号： B41F31/13

摘要： Ink-based digital printing systems useful for ink printing include a secondary roller having a rotatable reimageable surface layer configured to receive fountain solution. The fountain solution layer is patterned on the secondary roller and then partially transferred to an imaging blanket, where the fountain solution image is inked. The resulting ink image may be transferred to a print substrate. To achieve a very high-resolution (e.g., 1200-dpi, over 900-dpi) print with these secondary roller configurations, an equivalent very high-resolution fountain solution image needs to be transferred from the secondary roller onto the imaging blanket. To increase the resolution of the image on the secondary roller, examples include a textured surface layer added to the secondary roller for contact angle pinning the fountain solution on the roll. Approaches to introduce a micro-structure onto the surface layer of the secondary roller, and also superoleophobic surface coatings are described.

公开(公告)号：US20230097591A1

公开(公告)日：2023-03-30

申请号：US17481806

申请日：2021-09-22

申请人： Palo Alto Research Center Incorporated

发明人： Sean DORIS ,  Anne PLOCHOWIETZ ,  Jerome UNIDAD

IPC分类号： G01N33/543

摘要： Affinity sensors may exhibit advantaged regeneration behavior when pH is changed in proximity to a sensing element. Such affinity sensors may comprise at least one sensing element comprising a recognition moiety that interacts with an analyte by reversibly forming an analyte complex, and a solid-state pH-modulating element in proximity to the at least one sensing element, wherein formation of the analyte complex is pH-dependent and the at least one sensing element provides a signal that changes when the analyte complex reversibly forms, and a change in magnitude of the signal is correlatable to an amount of analyte interacted with the at least one sensing element.

公开(公告)号：US20220227117A1

公开(公告)日：2022-07-21

申请号：US17579360

申请日：2022-01-19

申请人： Palo Alto Research Center Incorporated

发明人： Anne PLOCHOWIETZ ,  Robert A. STREET ,  David K. BIEGELSEN ,  Gregory B. ANDERSON ,  Joanne L. LEE ,  Joerg MARTINI ,  Kathryn F. MURPHY ,  Thomas WUNDERER

IPC分类号： B41F7/08 ,  B41F7/26 ,  B41C1/10 ,  B41M1/06

摘要： Ink-based digital printing systems useful for ink printing include a secondary roller having a rotatable reimageable surface layer configured to receive fountain solution. The fountain solution layer is patterned on the secondary roller and then partially transferred to an imaging blanket, where the fountain solution image is inked. The resulting ink image may be transferred to a print substrate. To achieve a very high-resolution (e.g., 1200-dpi, over 900-dpi) print with these secondary roller configurations, an equivalent very high-resolution fountain solution image needs to be transferred from the secondary roller onto the imaging blanket. To increase the resolution of the image on the secondary roller, examples include a textured surface layer added to the secondary roller for contact angle pinning the fountain solution on the roll. Approaches to introduce a micro-structure onto the surface layer of the secondary roller, and also superoleophobic surface coatings are described.