Patents by Inventor Lokendra Pal

Lokendra Pal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9707791
    Abstract: A printable recording media including a supporting base substrate having, on its image side, a pre-coating layer that contains inorganic pigments and polymeric binders, and a top ink-receiving layer that includes inorganic pigments, polymeric binders and non-film forming polymers; and, having a polymer barrier layer on its backside. Also described herein is a method for making the printable recording media, a method for forming printed articles, and the obtained printed articles.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: July 18, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Xulong Fu, Jr., Xiaoqi Zhou, Francois K. Pirayesh, Lokendra Pal
  • Patent number: 9630437
    Abstract: A printable recording media containing a base substrate and a coating layer having a total solid content ranging from about 3 to about 65 weight percent by total weight of the coating composition and that includes from about 10 to about 90 weight percent of starch nanoparticles having a particle size ranging from about 40 to about 500 nm and from about 10 to about 90 weight percent of a water soluble divalent or multi-valent metal salt. Also described herein are a method for making the printable recording media and a method for producing printed images using the recording media.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: April 25, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Lokendra Pal, Jr., Xulong Fu
  • Patent number: 9631318
    Abstract: A printable recording media having a weight that is below 75 gsm and that contains a blend of hardwood and softwood fibers, wherein the total fiber content is at least 80 wt % of the total weight of the recording media; and a polymeric-modified pigment carbon black in an amount representing from about 0.02 wt % to about 1 wt % of the total weight of the recording media. Also disclosed herein are methods for making the printable recording media and a printing method using the printable recording media.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: April 25, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Lokendra Pal, Jr., John L. Stoffel, Xulong Fu
  • Publication number: 20170073902
    Abstract: A packaging material and method for making the same are disclosed. The packaging material includes a strength layer and image layer. The strength layer has two opposed surfaces. The strength layer includes softwood fibers having an average length ranging from about 1.5 mm to about 3.0 mm. The softwood fibers present in an amount ranging from about 70 wt % to about 100 wt % of a total wt % of the strength layer. The image layer includes hardwood fibers having an average length ranging from about 0.5 mm to about 1.5 mm. The hardwood fibers present in an amount ranging from about 70 wt % to about 100 wt % of a total wt % of the image layer. The image layer includes a water soluble di-valent or multi-valent salt present in an amount ranging from about 5 lb per ton of total fibers in the image layer to about 50 lb per ton of the total fibers in the image layer.
    Type: Application
    Filed: April 23, 2014
    Publication date: March 16, 2017
    Inventors: Lokendra Pal, Xulong Fu, Xiaoqi Zhou
  • Publication number: 20170066270
    Abstract: A printable recording media containing a substrate; a pre-coat layer including more than about 60 wt % of one or more inorganic pigments by total dry weight of the pre-coat layer; a topcoating layer including more than about 60 wt % of one or more inorganic pigments; up to 25 wt % of binders and up to about 5 wt % of a combination of natural and synthetic rheology modifiers, by total weight of the top-coating layer, wherein the ratio of the amount of natural rheology modifiers to the amount of synthetic rheology modifiers is from about 90:10 to about 50:50. Also disclosed herein is a method for making such printable recording media.
    Type: Application
    Filed: March 31, 2014
    Publication date: March 9, 2017
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Lokendra Pal, Jason Swei, Rajasekar Vaidyanathan, Silke Courtenay
  • Patent number: 9505256
    Abstract: The present disclosure is drawn to coated media substrates, as well as related systems and methods. In one example, a coated media substrate for inkjet ink printing can comprise an ink-receiving layer coated on at least one side of a substrate, and can be formulated for accepting an inkjet ink composition. The ink-receiving layer can comprise an optical brightening agent, an organic acid salt, a binder, a pigment, and a low-molecular weight polymeric carrier having a weighted average molecular weight less than 50,000 Mw.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 29, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Lokendra Pal, Xulong Fu, Xiaoqi Zhou, Ronald J. Selensky
  • Publication number: 20160339729
    Abstract: A printable recording media containing a base substrate and a coating layer having a total solid content ranging from about 3 to about 65 weight percent by total weight of the coating composition and that includes from about 10 to about 90 weight percent of starch nanoparticles having a particle size ranging from about 40 to about 500 nm and from about 10 to about 90 weight percent of a water soluble divalent or multi-valent metal salt. Also described herein are a method for making the printable recording media and a method for producing printed images using the recording media.
    Type: Application
    Filed: January 21, 2014
    Publication date: November 24, 2016
    Applicant: Hewlett-Packard Development Company, LP
    Inventors: Lokendra Pal, Xulong Fu
  • Publication number: 20160243870
    Abstract: A printable recording media includes a supporting base substrate having, on its image side, a pre-coating layer and a top ink-receiving layer that include inorganic pigments and polymeric binders; and having, on its backside, a barrier layer and an antistatic layer. Also described herein is a method for making the printable recording media, a method for forming printed articles and the obtained printed articles.
    Type: Application
    Filed: November 7, 2013
    Publication date: August 25, 2016
    Inventors: Xulong Fu, Lokendra Pal, Xiaoqi Zhou, Francois K. Pirayesh
  • Publication number: 20160222591
    Abstract: A printable recording media having a weight that is below 75 gsm and that contains a blend of hardwood and softwood fibers, wherein the total fiber content is at least 80 wt % of the total weight of the recording media; and a polymeric-modified pigment carbon black in an amount representing from about 0.02 wt % to about 1 wt % of the total weight of the recording media. Also disclosed herein are methods for making the printable recording media and a printing method using the printable recording media.
    Type: Application
    Filed: August 28, 2013
    Publication date: August 4, 2016
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Lokendra Pal, JR., John L. Stoffel, Xulong Fu
  • Publication number: 20160159127
    Abstract: A recording medium and a method for making the recording medium are disclosed. The recording medium includes a core substrate. The core substrate includes a base having two opposed surfaces. The base includes from about 40% to about 70% organic material and from about 30% to about 60% inorganic material. The core substrate also includes dudes a mineral coating layer disposed on one or both of the two opposed surfaces of the base. The mineral coating layer has a water-soluble or water-dispersible binder and mineral materials. An adhesion layer is disposed on the mineral coating layer. A surface treatment layer is disposed on the adhesion layer, and the surface treatment layer includes organic fibrous material.
    Type: Application
    Filed: July 25, 2013
    Publication date: June 9, 2016
    Inventors: Lokendra Pal, Xulong Fu, Ronald Selensky, Joaquin Sanchez Caso
  • Publication number: 20160136985
    Abstract: A printable recording media including a supporting base substrate having, on its image side, a pre-coating layer that contains inorganic pigments and polymeric binders, and a top ink-receiving layer that includes inorganic pigments, polymeric binders and non-film forming polymers; and, having a polymer barrier layer on its backside. Also described herein is a method for making the printable recording media, a method for forming printed articles, and the obtained printed articles.
    Type: Application
    Filed: July 23, 2013
    Publication date: May 19, 2016
    Inventors: Xulong Fu, Xiaoqi Zhou, Francois K. Pirayesh, Lokendra Pal
  • Publication number: 20160121598
    Abstract: A multilayer roller includes a thermally insulating cylinder, a rigid outer cylinder and an annular elastomeric layer. The rigid outer cylinder is arranged coaxially with the thermally insulating cylinder and is an outermost layer of the multilayer roller. The rigid outer cylinder has a smooth surface. The annular elastomeric layer is disposed between the thermally insulating cylinder and the rigid outer cylinder.
    Type: Application
    Filed: May 29, 2013
    Publication date: May 5, 2016
    Inventors: Xiaoqi Zhou, Lokendra Pal, Xulong Fu
  • Patent number: 9328258
    Abstract: A post-treatment solution for digital inkjet printing includes polymer particulates having a minimum film-forming temperature that is at least 50° C., a film-forming agent, and a liquid carrier. The film-forming agent is selected from the group consisting of citrate compounds, sebacate compounds, ethoxy alcohols, glycol oligomers, glycol polymers, glycol ether, glycerol acetals, and cyclic amides. A print medium, printing method, and printing system are also disclosed herein.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: May 3, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Xiaoqi Zhou, Lokendra Pal, Xulong Fu
  • Publication number: 20160075159
    Abstract: A printable recording media containing a base substrate; a pre-coat layer including more than about 60 wt % of one or more particulate inorganic pigments by total dry weight of said pre-coat layer; an ink-receiving layer, disposed on said pre-coat layer, comprising a mixture of about 10 to about 90 wt % of a first pigment including precipitated calcium carbonate particles, about 5 to about 60 wt % of a second pigment having a larger size and a different shape than said first pigment particles, and about 1 to about 50 wt % of a third pigment having a surface area of at least 50 m2/gram, wherein said weight percentages are by combined weight of the first, second and third pigments by total dry weight of said ink-receiving layer. Also disclosed herein is a method for producing printed images using said recording media.
    Type: Application
    Filed: April 24, 2013
    Publication date: March 17, 2016
    Inventors: Xi Zeng, JR., Lokendra Pal, Rajasekar Vaidyanathan
  • Patent number: 9278569
    Abstract: An inkjet recording medium includes a substrate, an intermediate layer disposed on the substrate, and an ink receiving layer disposed on the intermediate layer. The intermediate layer includes a binder, an inorganic pigment, and a pigment ink fixing agent chosen from divalent salts, multivalent salts, and combinations thereof. The ink receiving layer includes a non-film forming polymer, a binder chosen from any of water dispersible binders or water soluble binders, and a pigment.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: March 8, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Lokendra Pal, Xulong Fu, Ronald J. Selensky
  • Publication number: 20150329732
    Abstract: Embodiments provide treated print media, treatment compositions, and methods for forming treated print media. In some embodiments, a treated print medium may include a substrate and a treatment layer on the substrate, the treatment layer including microfibrils and an ink-fixing agent. Other embodiments are described and claimed.
    Type: Application
    Filed: December 20, 2012
    Publication date: November 19, 2015
    Inventors: Lokendra PAL, Xulong FU, Ronald J. SELENSKY, Xiaoqi ZHOU
  • Publication number: 20150267073
    Abstract: A post-treatment solution for digital inkjet printing includes polymer particulates having a minimum film-forming temperature that is at least 50° C., a film-forming agent, and a liquid carrier. The film-forming agent is selected from the group consisting of citrate compounds, sebacate compounds, ethoxy alcohols, glycol oligomers, glycol polymers, glycol ether, glycerol acetals, and cyclic amides. A print medium, printing method, and printing system are also disclosed herein.
    Type: Application
    Filed: October 29, 2012
    Publication date: September 24, 2015
    Inventors: Xiaoqi Zhou, Lokendra Pal, Xulong Fu
  • Patent number: 9079446
    Abstract: A photo media may comprise a substrate, the substrate having an image receiving side and a non-image receiving side, an extruded barrier layer disposed on the non-image receiving side of the substrate, and a laminate layer disposed on the image receiving side of the substrate after an ink layer is printed. The photo media may further comprise an image receiving layer disposed on the image receiving side of the substrate between the substrate and the laminate layer.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: July 14, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Lokendra Pal, Xulong Fu, Christine E. Steichen
  • Patent number: 9068292
    Abstract: An uncoated recording medium includes a blend of hardwood and softwood chemical pulp fibers, and thermomechanical pulp (TMP) fibers, with total fiber content at least 80 wt % of the medium's total wt %. Hardwood fibers range from about 20 wt % to about 70 wt %, softwood fibers range from about 30 wt % to about 50 wt %, and TMP fibers range from about 10 wt % to about 30 wt %, all relative to the total fiber content. A TiO2 amount ranges from about 1.5 wt % to about 6 wt % of the total wt %, and a bivalent or multivalent salt amount ranges from about 6,000 to about 16,000 ?g/gram of the medium. The basis weight ranges from about 45 g/m2 to about 63 g/m2.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: June 30, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: John L. Stoffel, Thomas Roger Oswald, Xulong Fu, Lokendra Pal, Silke Courtenay
  • Publication number: 20150072120
    Abstract: The present disclosure provides recording media and related methods. A recording media for printing can comprise a base paper and a backside extruded polyethylene layer on a side of the base paper. The backside extruded polyethylene layer can include a filler and an organic reagent admixed in the extruded polyethylene layer, wherein the filler and organic reagent are present in the backside extruded polyethylene layer in an amount of 20% by weight to 50% by weight based on the total weight of the backside extruded polyethylene layer.
    Type: Application
    Filed: April 13, 2012
    Publication date: March 12, 2015
    Applicant: Hewlett-Packard Development Company,L.P.
    Inventors: Christine E. Steichen, Xulong Fu, Lokendra Pal, Julio Cesar Alonso