Having Overlayer Patents (Class 399/147)
  • Patent number: 11520248
    Abstract: Some examples relate to printing apparatuses and methods. In an example, a roller transfers printing fluid to a substrate. In some examples an electrically grounded roller is positioned proximate the electrically charged roller and guides the substrate. In some examples, the roller is an electrically charged roller. In some examples an electric field is applied and its strength is varied based on a dielectric coefficient of the substrate and/or a thickness of the substrate.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: December 6, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ehud Eyal, Eric Nelson, Nadav Shalem
  • Patent number: 9869942
    Abstract: An imaging apparatus including: an electrophotographic photoreceptor; a charging unit to charge the surface of the electrophotographic photoreceptor; an exposing unit to perform exposure of the electrophotographic photoreceptor charged by the charging unit; a developing unit to feed a toner to the electrophotographic photoreceptor exposed by the exposing unit to form a toner image; a transfer unit to transfer the toner image formed on the electrophotographic photoreceptor; a lubricant feeding unit to feed a lubricant onto the surface of the electrophotographic photoreceptor; and a cleaning unit to remove the residual toner on the surface of the electrophotographic photoreceptor, wherein the electrophotographic photoreceptor includes a conductive support, a photoreceptive layer, and a protective layer disposed in sequence, the protective layer includes a resin containing a particulate P-type semiconductor, and the protective layer has a surface roughness Rz of 0.030 ?m or more and 0.075 ?m or less.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: January 16, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Toshiyuki Fujita, Keiichi Inagaki, Kazuteru Ishizuka, Mari Ueda, Daisuke Kodama
  • Patent number: 9581934
    Abstract: The developing apparatus includes a toner, a developing container, a developing roller, and a toner layer thickness controlling member, wherein the toner contains toner particles containing a binder resin and a colorant, and silica fine particles; the covering rate X1 of the surface of each of the toner particles with the silica fine particles is 40.0 to 75.0 area %; and a diffusion index represented by X1/X2 satisfies a predetermined range where the theoretical covering rate with the silica fine particles is defined as X2, the developing roller includes a substrate, a base layer, and a coverage portion; and the volume resistivity of the coverage portion and the average thickness of the coverage portion are within predetermined ranges.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: February 28, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Minoru Ito, Masaki Yamada, Kazuhito Wakabayashi, Tomoya Uesugi, Michihisa Magome, Takashi Matsui
  • Patent number: 9487027
    Abstract: A method of single pass inkjet method of applying an adhesive to a substrate to bond a foil material to the substrate is disclosed. The inkjet printer includes a printer head to pattern an adhesive material directly onto a printable substrate and a foil material. An ultraviolet curing lamp is included to cure the adhesive material using a dry lamination process and/or a wet lamination process. A nip roller is included to affix the foil material with the adhesive material onto to the printable substrate. A rollback mechanism is assembled to lift away excess foil material from the printable substrate and the excess foil material is adjacent to fully cured areas of the adhesive material having the affixed thereupon the foil material.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: November 8, 2016
    Assignee: GRAPH-TECH-USA, LLC
    Inventors: William H. Strater, Jr., Markus Portmann
  • Patent number: 8179568
    Abstract: What is disclosed is a novel system and method for minimizing dot visibility in color marking devices capable of dot-on-dot printing. The present method achieves minimum dot visibility for a given dispersed-dot screen by performing a CMYK to CMYKRGB conversion which uses less visible dots as much as possible before more visible dots are introduced. The output color dot coverages are calculated sequentially to minimize the coverage of more visible dots in a decreasing order of brightness. Resulting images have noticeably reduced halftone graininess, particularly in the mid to darker tone areas. The present method is also computationally efficient.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: May 15, 2012
    Assignee: Xerox Corporation
    Inventor: Zhen He
  • Patent number: 6986977
    Abstract: An image forming apparatus of the present invention having a transferring particle layer forming equipment which forms a transferring particle layer prior to forming a toner layer on a surface of an image recording member, whose coagulation force among the transferring particles in the transferring particle layer is smaller than adhesive force of the transferring particle layer to the image recording member, a development equipment which forms a toner layer on a surface of the image recording member according to image information with a liquid developer in a manner that a part of the toner layer is superimposed on the transferring particle layer and a transfer equipment which transfer the toner layer to a transfer medium together with a part of the transferring particle layer. As a result, high transfer efficiency can be obtained, and an image forming apparatus which realizes high image quality is provided.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: January 17, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koichi Ishii, Yasushi Shinjo, Mitsunaga Saito, Haruhi Oooka
  • Patent number: 6957030
    Abstract: An apparatus for digitally generating an image comprises a photoconductor assembly, a corona assembly, and a light source assembly to generate a latent image on the photoconductor. The apparatus also includes a developer assembly that includes a developer, such as powder paint, to generate an image. The apparatus may include a fuser for generating a film image. The apparatus of the present invention may include a cartridge for storing and digitally applying adhesive to the image. Furthermore, the apparatus of the present invention includes a controller for selectively controlling voltages to control thickness of the image. Additionally, apparatus may include a consumable sheet to remove excess adhesive from the substrate.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: October 18, 2005
    Assignee: Gerber Scientific Products, Inc.
    Inventors: Peter R. Baker, Jr., Mark E. Guckin, David J. Logan, Russell F. Croft
  • Patent number: 6650853
    Abstract: An image recording apparatus includes an image carrying part, a developing part and an image transferring part. The image carrying part has a surface on which an electrostatic latent image is formed. The developing part develops the electrostatic image into a toner image by selectively applying toner to the surface of the image carrying part. The image transferring part transfers the toner image onto a recording sheet or an intermediate image transferring part. Fine particles are uniformly formed on the surface of the image carrying part, and a portion of the fine particles is transferred from the image carrying part with the toner image. The fine particles are smaller in diameter than the toner particles.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: November 18, 2003
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takeshi Sumikawa, Kazuo Maruyama, Hideaki Tanaka, Takeshi Nagao, Tomoo Kobayashi, Isao Ito, Michiaki Takahashi, Masashi Ogasawara, Shigeo Ohno
  • Patent number: 6555279
    Abstract: An electrophotographic photosensitive member exhibiting a good durability and stable electrophotographic performances regardless of environmental change is provided by coating the photosensitive layer with a specific protective layer. The protective layer comprises a cured phenolic resin and a charge-transporting compound having at least one group selected from the group consisting of hydroxyalkyl groups, hydroxyalkoxy groups and hydroxyphenyl groups capable of having a substituent.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: April 29, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kouichi Nakata, Yosuke Morikawa, Kimihiro Yoshimura, Hiroshi Saito
  • Patent number: 6492081
    Abstract: An electrophotographic photosensitive member exhibiting a good durability and stable electrophotographic performances regardless of environmental change is provided by coating the photosensitive layer with a specific protective layer. The protective layer has a thickness of 1-7 &mgr;m and comprises a cured phenolic resin and metal particles or metal oxide particles dispersed therein.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: December 10, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yosuke Morikawa, Kouichi Nakata, Hiroshi Saito
  • Patent number: 6282392
    Abstract: An image formation apparatus including an electrostatic latent image formation body, a latent image forming unit for forming an electrostatic latent image on the electrostatic latent image formation body, and a belt-shaped image carrier with an inner surface in contact with the electrostatic latent image formation body for transferring the electrostatic latent image to the belt-shaped image carrier. A developing unit supplies a liquid developer containing toner particles and carrier liquid to a surface of the belt-shaped image carrier which is not in contact with the electrostatic latent image formation body. A solvent removal unit removes the carrier liquid from the developed image so as to form a toner-developed image. A transfer-fixation block transfers and fixes the toner-developed image from the belt-shaped image carrier onto a recording medium.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: August 28, 2001
    Assignee: NEC Corporation
    Inventor: Chiseki Yamaguchi
  • Patent number: 6124065
    Abstract: The present invention provides a photosensitive body and an electrophotographic printer capable of notifying an operating whether a protection film 15 is correctly peeled off from a photosensitive surface 1a of the photosensitive body. The protection film 15 has marks 15a and 15b to be automatically detected. The electrophotographic printer 100 comprises a peel member 13, a guide route for guiding the peeled off protection film out of the printer, a magnetic sensor 14 for detecting the marks 15a and 15b, and a control circuit 17 for deciding according to an output of the magnetic sensor whether the protection film is correctly peeled off and outputting the decision result through a liquid crystal display panel 19. This enables an operator to know about the peeling state.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: September 26, 2000
    Assignee: NEC Corporation
    Inventor: Tomoya Saeki
  • Patent number: 5912098
    Abstract: An electrophotographic photosensitive member is constituted by at least a support, a photosensitive layer disposed on the support, and a protective layer disposed on the photosensitive layer. The protective layer comprises a cured product obtained from a condensation product between a silyl acrylate compound and colloidal silica. The protective layer is effective in providing the photosensitive member with improved potential stability against a change in environmental conditions and an excellent durability.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: June 15, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takakazu Tanaka, Hideki Anayama, Akira Yoshida, Hidetoshi Hirano, Wataru Kitamura
  • Patent number: 5751432
    Abstract: Apparatus and method for glossing certain areas of a substrate. In particular, highlight images are created by incorporating in some of the images on a substrate a clear polymer material thereby providing them with a larger mass thereby resulting in a higher gloss than those images on the same substrate which do not contain the additional clear polymer.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: May 12, 1998
    Assignee: Xerox Corporation
    Inventor: Mark A. Gwaltney
  • Patent number: 5733235
    Abstract: A rubber covered roll of a structure that a rubber layer is formed on the surface of a roll-like base is provided. The rubber layer is a layer formed of a vulcanizate of a rubber composition comprising 25-95 wt. % of copolymer rubber (A) obtained by copolymerizing 28-70 mol % of an alkylene oxide, 28-70 mol % of an epihalohydrin and 2-15 mol % of an ethylenically unsaturated epoxide, and 5-75 wt. % of unsaturated rubber (B). The rubber covered roll does not contaminate any photosensitive member, stably has a low electric resistance, and is low in dependence of electric resistance on environment and in hardness. An image-forming apparatus equipped with the rubber covered roll as a development roll or charging roll, and a rubber composition for the rubber covered roll are also provided.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: March 31, 1998
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Tetsuo Waku, Hiromitsu Kikuchi, Takeshi Ooishi, Michiharu Yogosawa