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).
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Patent number: 9707791Abstract: 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: GrantFiled: July 23, 2013Date of Patent: July 18, 2017Assignee: Hewlett-Packard Development Company, L.P.Inventors: Xulong Fu, Jr., Xiaoqi Zhou, Francois K. Pirayesh, Lokendra Pal
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Patent number: 9630437Abstract: 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: GrantFiled: January 21, 2014Date of Patent: April 25, 2017Assignee: Hewlett-Packard Development Company, L.P.Inventors: Lokendra Pal, Jr., Xulong Fu
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Patent number: 9631318Abstract: 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: GrantFiled: August 28, 2013Date of Patent: April 25, 2017Assignee: Hewlett-Packard Development Company, L.P.Inventors: Lokendra Pal, Jr., John L. Stoffel, Xulong Fu
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Publication number: 20170073902Abstract: 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: ApplicationFiled: April 23, 2014Publication date: March 16, 2017Inventors: Lokendra Pal, Xulong Fu, Xiaoqi Zhou
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Publication number: 20170066270Abstract: 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: ApplicationFiled: March 31, 2014Publication date: March 9, 2017Applicant: Hewlett-Packard Development Company, L.P.Inventors: Lokendra Pal, Jason Swei, Rajasekar Vaidyanathan, Silke Courtenay
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Patent number: 9505256Abstract: 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: GrantFiled: December 20, 2011Date of Patent: November 29, 2016Assignee: Hewlett-Packard Development Company, L.P.Inventors: Lokendra Pal, Xulong Fu, Xiaoqi Zhou, Ronald J. Selensky
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Publication number: 20160339729Abstract: 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: ApplicationFiled: January 21, 2014Publication date: November 24, 2016Applicant: Hewlett-Packard Development Company, LPInventors: Lokendra Pal, Xulong Fu
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Publication number: 20160243870Abstract: 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: ApplicationFiled: November 7, 2013Publication date: August 25, 2016Inventors: Xulong Fu, Lokendra Pal, Xiaoqi Zhou, Francois K. Pirayesh
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Publication number: 20160222591Abstract: 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: ApplicationFiled: August 28, 2013Publication date: August 4, 2016Applicant: Hewlett-Packard Development Company, L.P.Inventors: Lokendra Pal, JR., John L. Stoffel, Xulong Fu
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Publication number: 20160159127Abstract: 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: ApplicationFiled: July 25, 2013Publication date: June 9, 2016Inventors: Lokendra Pal, Xulong Fu, Ronald Selensky, Joaquin Sanchez Caso
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Publication number: 20160136985Abstract: 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: ApplicationFiled: July 23, 2013Publication date: May 19, 2016Inventors: Xulong Fu, Xiaoqi Zhou, Francois K. Pirayesh, Lokendra Pal
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Publication number: 20160121598Abstract: 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: ApplicationFiled: May 29, 2013Publication date: May 5, 2016Inventors: Xiaoqi Zhou, Lokendra Pal, Xulong Fu
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Patent number: 9328258Abstract: 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: GrantFiled: October 29, 2012Date of Patent: May 3, 2016Assignee: Hewlett-Packard Development Company, L.P.Inventors: Xiaoqi Zhou, Lokendra Pal, Xulong Fu
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Publication number: 20160075159Abstract: 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: ApplicationFiled: April 24, 2013Publication date: March 17, 2016Inventors: Xi Zeng, JR., Lokendra Pal, Rajasekar Vaidyanathan
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Patent number: 9278569Abstract: 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: GrantFiled: July 22, 2011Date of Patent: March 8, 2016Assignee: Hewlett-Packard Development Company, L.P.Inventors: Lokendra Pal, Xulong Fu, Ronald J. Selensky
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Publication number: 20150329732Abstract: 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: ApplicationFiled: December 20, 2012Publication date: November 19, 2015Inventors: Lokendra PAL, Xulong FU, Ronald J. SELENSKY, Xiaoqi ZHOU
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Publication number: 20150267073Abstract: 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: ApplicationFiled: October 29, 2012Publication date: September 24, 2015Inventors: Xiaoqi Zhou, Lokendra Pal, Xulong Fu
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Patent number: 9079446Abstract: 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: GrantFiled: October 29, 2010Date of Patent: July 14, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: Lokendra Pal, Xulong Fu, Christine E. Steichen
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Patent number: 9068292Abstract: 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: GrantFiled: October 29, 2013Date of Patent: June 30, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: John L. Stoffel, Thomas Roger Oswald, Xulong Fu, Lokendra Pal, Silke Courtenay
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Publication number: 20150072120Abstract: 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: ApplicationFiled: April 13, 2012Publication date: March 12, 2015Applicant: Hewlett-Packard Development Company,L.P.Inventors: Christine E. Steichen, Xulong Fu, Lokendra Pal, Julio Cesar Alonso