Spatial Relationship Specified Between Color-former And Developer Patents (Class 503/226)
  • Patent number: 7968494
    Abstract: A heat-sensitive recording material including: a substrate; a heat-sensitive color developing layer over the substrate, the heat-sensitive color developing layer composed mainly of a leuco dye and a color developer that develops color of the leuco dye upon heating; and a protective layer over the heat-sensitive color developing layer, the protective layer composed mainly of a water-soluble resin and a crosslinking agent, wherein the protective layer contains diacetone-modified polyvinyl alcohol as the water-soluble resin, and N-aminopolyacrylamide as the crosslinking agent.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: June 28, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinji Takano, Yoshiaki Matsunaga
  • Publication number: 20110146912
    Abstract: A multi-layer laminate media is provided on which information may be applied in machine or human readable form on a visible front surface by the output of one or more lasers, or other high intensity light source. In a preferred embodiment, the media has three layers including preferably transparent substrate, a thermochromic layer and a light absorbent layer located intermediate the media substrate and the thermochromic layer. The light absorbent layer is adapted to absorb light from the light source and convert the absorbed light into heat. The heat is immediately conducted into selected portions of the thermochromic layer which is in thermal contact with the light absorbent layer, causing portions of the thermochromic layer to change visual appearance such as color to create the desired mark. The media optimally includes obscuration materials to reduce the visibility of the light absorbent layer to the naked eye.
    Type: Application
    Filed: November 12, 2010
    Publication date: June 23, 2011
    Inventors: M. Scott Howarth, Colin P. Woodward, Neil Griffin, Sam Hyde, Roger Clarke, Richard Calusdian, Wilson B. Murray, Richard Hirst, Richard Evans, Enrique B. Schilling, Gareth Melton, Timothy Moore, David Southwood
  • Patent number: 7956007
    Abstract: A heat-sensitive recording material comprising a support and a heat-sensitive recording layer, the heat-sensitive recording layer comprising a colorless or pale-colored basic dye and a developer, the developer being 4-allyloxy-4?-hydroxydiphenylsulfone, and the heat-sensitive recording layer further comprising a compound represented by formula (I): wherein R1 is an unsubstituted aromatic group, or an aromatic group substituted with at least one member selected from the group consisting of a methyl group and a chlorine atom, and R2 is a divalent organic group.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: June 7, 2011
    Assignee: Oji Paper Co., Ltd.
    Inventors: Yoshimi Ishibashi, Yukie Mori
  • Publication number: 20110130280
    Abstract: The present invention provides a thermoreversible recording medium which includes a support, a thermoreversible recording layer which comprises a thermoreversible composition containing an electron-donating color-forming compound and an electron-accepting compound, a metal compound-containing layer which includes a resin, an organic metal compound, and an inorganic layer compound, in which the resin is at least one selected from the group consisting of polyvinyl alcohol polymers, and ethylene-vinyl alcohol copolymers, and the organic metal compound is at least one selected from the group consisting of an organic titanium compound and an organic zirconium compound, and a protective layer which protects the metal compound-containing layer, wherein the support, the thermoreversible recording layer, the metal compound-containing layer and the protective layer are laminated in this order.
    Type: Application
    Filed: November 30, 2010
    Publication date: June 2, 2011
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yu TSUCHIMURA, Satoshi ARAI, Jun MARUYAMA, Yutaka MATSUOKA
  • Publication number: 20110121557
    Abstract: Multi-layer articles capable of forming color images are provided. The articles include a multi-layer construction with at least two layers in which at least one of the layers includes a thermally activatable composition. The thermally activatable composition includes a non-linear light to heat converter composition and a color forming compound. Upon activation with a light source an image forms.
    Type: Application
    Filed: May 4, 2009
    Publication date: May 26, 2011
    Inventors: Pingfan Wu, Douglas A. Dunn, Dennis E. Vogel, Stanley C. Busman
  • Publication number: 20110105319
    Abstract: The present invention presents a thermosensitive recording medium having an excellent color developing property, water resistance and preservation properties (such as anti-self-color-development) and is harmless to the environment. The present invention is a thermosensitive recording medium having a thermosensitive recording layer comprising a colorless or pale colored basic leuco dye and an electron accepting developing agent on a substrate, wherein the thermosensitive recording layer further comprises a resin containing a carboxyl group, an epichlorohydrin resin and a modified polyamine/amide resin. This thermosensitive recording medium is suitable for recording with a low applied energy.
    Type: Application
    Filed: May 1, 2008
    Publication date: May 5, 2011
    Inventors: Kenji Hirai, Akihito Ogino
  • Publication number: 20110092365
    Abstract: A thermosensitive recording material including, on a support having a type D durometer hardness of 40 or more as defined in accordance with ISO 7619:2004, and sequentially from the support side, an undercoating layer having a dynamic microhardness at 25° C. of 5.0 mN or less; and a thermosensitive color-forming layer containing an electron-donating dye precursor and an electron-accepting compound for thermal color-formation of the electron-donating dye precursor.
    Type: Application
    Filed: October 15, 2010
    Publication date: April 21, 2011
    Applicant: FUJIFILM CORPORATION
    Inventor: Kunihiko OHGA
  • Publication number: 20110085435
    Abstract: Imaging layers, optical disks, and methods of preparation of each, are disclosed.
    Type: Application
    Filed: June 25, 2008
    Publication date: April 14, 2011
    Inventors: Paul Felice Reboa, Mehrgan Khavari, Susan E. Bailey
  • Patent number: 7923412
    Abstract: A dye ink or a pigmented ink application process using, for example, any one of flexographic printing, flood coating, tinting, or other suitable technique or process to add a colored area adjacent to a thermal ink layer of a thermal material is disclosed. The colored area provides a background color, such that upon application of the heat source, a thermal image appears as being imaged onto the colored area. The process can be used to make heat activated direct thermal labels or thermal paper rolls, including cash register-type rolls, poster printer format rolls, etc. The process permits a thermal material including a thermal ink layer to be produced in various colors in relatively small print runs using conventional equipment.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: April 12, 2011
    Inventor: Richard H. Kazdin
  • Patent number: 7906458
    Abstract: To provide a heat-sensitive recording material, including: a substrate; a heat-sensitive color developing layer on the substrate, the heat-sensitive color developing layer containing at least a leuco dye and a developer; and a protective layer on the heat-sensitive color developing layer, the protective layer containing at least a binder resin, wherein the binder resin in the protective layer contains diacetone-modified polyvinyl alcohol resin, the degree of polymerization of the binder resin in the protective layer is 1,000 to 1,800 and the degree of saponification of the binder resin is 90% or greater and less than 98%.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: March 15, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiaki Matsunaga, Shinji Takano, Kazuyuki Uetake
  • Publication number: 20110003687
    Abstract: A thermal paper is described for the formation of images in thermal printing equipment and their manufacturing process, using high smoothness paper as a base or substrate. The thermal paper object of this invention is more economical and has a fully-acceptable performance. The high smoothness non-coated base paper has a greater high smoothness superficial finish than uncoated paper, and this development had not previously been used industrially for this purpose, since on trying to use the state of art of the process coupled with uncoated paper characteristics, the result was a low quality product. Hence, until now base papers had to be used with a previous coating the preparation of which increased production costs due to finished product characteristics, such as heavier weight (weight by square meter) and also a higher caliber.
    Type: Application
    Filed: November 11, 2008
    Publication date: January 6, 2011
    Inventors: Ricardo Millares Neyra, Ricardo Millares Sotres, Dalila Rivera Carmona
  • Patent number: 7846871
    Abstract: A heat-sensitive recording medium is presented, comprising a substrate (2) with a first side and a second side remote therefrom a heat-sensitive recording layer (4) which is placed on the first side of the substrate (2) and comprises at least one colorant precursor and colour acceptor, the colorant precursor and colour acceptor reacting with one another under the influence of heat to form a colour, a printed protective layer (9) which covers the recording layer (4), is crosslinkable and crosslinked under the influence of energy-rich radiation and is based on (meth)acrylates, characterised in that the protective layer (9) contains from 65 to 95% by weight of one or more (meth)acrylates, selected from the group comprising polyether(meth)acrylate, epoxy(meth)acrylate and urethane(meth)acrylate from 0 to 20% by weight of photoinitiators and from 0.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: December 7, 2010
    Assignee: Mitsubishi Hitec Paper Flensburg GmbH
    Inventors: Wolfgang Wagner, Nebojsa Curcic
  • Patent number: 7846870
    Abstract: A heat-sensitive recording material comprising a substrate and a heat-sensitive recording layer, the heat-sensitive recording layer containing a leuco dye, a developer, and a copolymer resin emulsion, the copolymer resin emulsion comprising a copolymer resin, the copolymer resin (1) containing (i) (meth)acrylonitrile, and (ii) one or more vinyl monomers copolymerizable with (meth)acrylonitrile, and (2) having a solubility parameter of 12.0 or higher, above mentioned vinyl monomers (ii) include at least a carboxyl group-containing vinyl monomer, and said at least a carboxyl group-containing vinyl monomer is 1 to 10 mass % of the total mass of the copolymer resin.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: December 7, 2010
    Assignee: Oji Paper Co., Ltd.
    Inventors: Kazuo Watanabe, Keiichi Inubushi
  • Patent number: 7816302
    Abstract: An identification device in the form of a wristband, labels, tags or cards, including a clear thermal sensitive coating laminated between a clear plastic coating and a liner ply having colored regions or printed matter. The colored regions or printed matter is visible through the clear thermal sensitive coating and clear plastic coating until the thermal sensitive coating is activated and becomes selectively opaque. The clear plastic coating having a uniform thickness allows for reliable thermal printing on the thermal sensitive coating with the clear plastic coating in place.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: October 19, 2010
    Assignee: Precision Dynamics Corporation
    Inventor: Edward D. Hammerslag
  • Publication number: 20100248959
    Abstract: The present invention provides a thermosensitive recording medium, which has a satisfactory color developing sensitivity, an excellent general printability (surface strength) and an excellent anti-sticking property. The thermosensitive recording layer of the thermosensitive recording medium of the present invention contains an alkylketene dimer. Without forming a protecting layer, the thermosensitive recording medium of the present invention is superior in color developing sensitivity, general printability (surface strength) and anti-sticking property.
    Type: Application
    Filed: December 19, 2007
    Publication date: September 30, 2010
    Inventors: Aya Kato, Tatsuyuki Kurihara, Tatsuo Nagai, Yoshimi Midorikawa, Kenji Hirai, Akihito Ogino
  • Publication number: 20100197492
    Abstract: A thermosensitive recording medium including a support; a layer containing a photothermal conversion material, formed over a surface of the support; and an oxygen blocking layer formed over a surface of the layer opposite to a surface thereof over which the support is formed, wherein the layer further contains a resin, which is in a cross-linked state, and the photothermal conversion material absorbs a light having a specific wavelength and converts the light into heat, and wherein the oxygen blocking layer has an oxygen permeability of 0.5 mL/(m2·24 hr·atm) or less at 25° C. and 80% RH.
    Type: Application
    Filed: January 28, 2010
    Publication date: August 5, 2010
    Applicant: RICOH COMPANY, LTD.
    Inventors: Shinya KAWAHARA, Tomomi Ishimi, Toshiaki Asai, Yoshiko Hotta
  • Publication number: 20100197493
    Abstract: A thermosensitive recording material comprising a substrate, a thermosensitive recording layer applied to the front and a back coating which comprises a polyurethane-based-cross-linking component in addition to pigments and binders.
    Type: Application
    Filed: September 2, 2008
    Publication date: August 5, 2010
    Applicant: Mitsubishi HiTec Paper Flensburg GmbH
    Inventors: Gerhard Stork, Lerius Karsten
  • Patent number: 7732373
    Abstract: To provide a reversible thermosensitive recording medium comprising a support, a thermosensitive recording layer formed on the support, and a protective layer formed on the thermosensitive recording layer, wherein the thermosensitive recording layer contains an electron donative coloring compound and an electron acceptive compound, and the color tone reversibly changes depending on the temperature, and the protective layer contains a polymer of a composition containing two kinds of acrylate compounds selected from an acrylate compound having a pentaerythritol group and an acrylate compound having a dipentaerythritol group.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: June 8, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Tadafumi Tatewaki, Satoshi Arai, Nobuyoshi Sugiyama
  • Publication number: 20100120614
    Abstract: The present invention provides a thermochromic coloring color-memory composition which effectively produce a characteristic that colors can be reversibly memorized and maintained and has applicability to various fields and a thermochromic coloring color-memory microcapsule pigment containing the composition. A thermochromic coloring color-memory composition comprising a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) a compound represented by the following formula (1) as a reaction medium which controls color reactions of the components (A) and (B): wherein X represents any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a methoxy group, and a halogen atom, m represents an integer of from 1 to 3, and n represents an integer of from 1 to 20.
    Type: Application
    Filed: April 10, 2008
    Publication date: May 13, 2010
    Applicant: THE PILOT INK CO., LTD.
    Inventor: Yoshiaki Ono
  • Patent number: 7709416
    Abstract: The present invention provides a heat-sensitive recording material that comprises a support, a heat-sensitive recording layer comprising a leuco dye and a developer, and a protective layer principally comprising a pigment and a binder. The support, the heat-sensitive recording layer, and the protective layer are provided in this order. The protective layer comprises: (1) a pigment of secondary particles with an average particle diameter of 30 to 900 nm formed by aggregation of amorphous silica primary particles with a particle diameter of 3 to 70 nm; or (2) a pigment of secondary particles with an average particle diameter of 30 to 900 nm formed by aggregation of amorphous silica primary particles with a particle diameter of 3 to 70 nm, and a binder comprising acetoacetyl modified polyvinyl alcohol with a saponification degree of 90 to 100 mol % and a polymerization degree of 1900 to 5000.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: May 4, 2010
    Assignee: OJI Paper Co., Ltd.
    Inventors: Takeshi Iida, Takeshi Shikano
  • Patent number: 7700258
    Abstract: Compositions and methods for production of color images which are developable with improved marking sensitivity and image contrast are disclosed and described. Specifically, a color forming composition can comprise a polymeric activator phase including a polymer matrix and an activator dissolved therein, a color former phase including a color former, and a radiation absorber in thermal contact with the color former phase. Particularly, the color former phase can be finely dispersed within the polymeric activator phase at an average particle size of less than 2 ?m.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: April 20, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Vladek P. Kasperchik, Makarand P. Gore
  • Publication number: 20100087317
    Abstract: Disclosed is a heat-sensitive recording material comprising a support and a heat-sensitive recording layer formed on the support, the heat-sensitive recording layer containing dye precursor-containing composite particles and a developer, the dye precursor-containing composite particles being obtained by dissolving a solute containing a dye precursor in a solvent containing a polyvalent isocyanate compound-containing polymerization component, emulsifying and dispersing the obtained solution in an aqueous medium, and then performing a polymerization reaction of the polyvalent isocyanate compound-containing polymerization component in the presence of polyethyleneimine having a molecular weight of 200 to 1,500. Also disclosed is a method of producing such a heat-sensitive recording material.
    Type: Application
    Filed: March 28, 2008
    Publication date: April 8, 2010
    Applicant: OJI PAPER CO., LTD.
    Inventors: Masatoshi Fujino, Haruo Omura, Kenji Muto
  • Publication number: 20100062936
    Abstract: Provided is a thermosensitive recording material which can be produced through high-speed coating, which is excellent in head-matching property, and which can provide a printed image having good waterproofness, while maintaining high sensitivity and high storage stability, which material includes a support, an under layer laid over the support, the under layer containing a plastic hollow particle, a thermosensitive color-developing layer laid over the under layer, the thermosensitive color-developing layer containing a leuco dye and a developer, wherein two or more layers including the thermosensitive color-developing layer are formed through simultaneous coating by a curtain coating method.
    Type: Application
    Filed: September 9, 2009
    Publication date: March 11, 2010
    Applicant: RICOH COMPANY, LTD.
    Inventors: Motoi Orihara, Tomohisa Kakuda, Yoshiaki Matsunaga, Eiji Fukui
  • Publication number: 20100048395
    Abstract: The invention provides a thermosensitive recording material having, on a support, a thermosensitive recording layer incuding an electron-donating dye precursor and an electron-accepting compound that makes the electron-donating dye precursor thermally develop a color, wherein the thermosensitive recording layer includes the electron-accepting compound in a ratio of from 5/1 to 20/1 by mass ratio with respect to the electron-donating dye precursor.
    Type: Application
    Filed: August 14, 2009
    Publication date: February 25, 2010
    Applicant: FUJIFILM CORPORATION
    Inventor: Kunihiko OHGA
  • Publication number: 20100009847
    Abstract: A thermal color change wall having a thermal color change coating covered on the surface thereof that changes color due to a change in temperature.
    Type: Application
    Filed: July 11, 2008
    Publication date: January 14, 2010
    Inventor: Chen-Fu Chang
  • Patent number: 7645719
    Abstract: A thermal paper with a fluorescent security mark printed on the thermosensitive coating that is responsive to wavelengths in the range of 200 nanometers to 400 nanometers. The mark is either printed on the thermosensitive coating directly or on an optional protective top coat positioned over the thermosensitive coating. Methods of preparing the thermal paper comprise printing a solution, dispersion or emulsion of a fluorescent compound on the thermal paper by flexographic printing.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: January 12, 2010
    Assignee: NCR Corporation
    Inventors: Mary Ann Wehr, Zackary D. Baggett, Wendell B. Halbrook, Jr.
  • Patent number: 7635660
    Abstract: A multicolor imaging system is described wherein at least two, and preferably three, different image-forming layers of a thermal imaging member are addressed at least partially independently by a thermal printhead or printheads from the same surface of the imaging member by controlling the temperature of the thermal printhead(s) and the time thermal energy is applied to the image-forming layers. Each color of the thermal imaging member can be printed alone or in selectable proportion to the other color(s). Novel thermal imaging members are also described.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: December 22, 2009
    Assignee: Zink Imaging, Inc.
    Inventors: Jayprakash C. Bhatt, Daniel P. Bybell, F. Richard Courell, Anemarie DeYoung, Chien Liu, Stephen J. Telfer, Jay E. Thornton, William T. Vetterling
  • Patent number: 7635661
    Abstract: A heat-sensitive recording material has a support, and a heat-sensitive recording layer including at least a leuco dye, a developer and a binder. The heat-sensitive recording layer contains secondary particles with an average particle diameter of 30 to 900 nm formed by aggregation of primary particles of amorphous silica with a particle diameter of at least 3 nm and less than 30 nm, and optionally a basic pigment. A protective layer may be formed on the heat-sensitive recording layer.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: December 22, 2009
    Assignee: OJI Paper Co., Ltd.
    Inventors: Takeshi Iida, Takeshi Shikano
  • Patent number: 7618921
    Abstract: An object of the present invention is to provide an image formation material exhibiting exposure visualization with excellent color development, and further to provide a printing plate material exhibiting excellent on-press developability, accompanied with excellent exposure visualization and printing durability. Also disclosed is an image formation material possessing a support and provided thereon, a thermosensitive image formation layer, wherein the thermosensitive image formation layer comprises water-insoluble particle (A), electron providing dye precursor (B) and electron accepting dye color developing agent (C), and at least one of the precursor (B) and the color developing agent (C) is provided on a surface of the particle (A).
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: November 17, 2009
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventor: Takahiro Mori
  • Patent number: 7618922
    Abstract: A thermally-sensitive recording medium having a protecting layer formed on a thermally-sensitive recording layer containing a colorless or pale-colored electron-donating leuco dye and electron-accepting color-developing agent. The thermally-sensitive recording layer is formed on a substrate, and the protecting layer contains a resin that contains a carboxyl group, epichlorohydrin resin and modified polyamine/amide resin, and the thermally-sensitive recording medium exhibits sufficient resistant against water such as rain or humidity, and further is excellent in printing run-ability (head debris and sticking) and sensitivity.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: November 17, 2009
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Akihito Ogino, Seiki Yoneshige, Junpei Natsui, Jun Makihara, Naoki Negishi
  • Patent number: 7618920
    Abstract: A thermal recording sheet comprising, on one surface of square, transparent film, a thermal recording layer containing leuco dye and a coloration agent and a protection layer mainly containing water-based resin, wherein corner parts (1a, 1b, 1c, 1d) including at least one marked corner part (1a) are provided at its four corners. The corner parts (1a, 1b, 1c, 1d) respectively have end edges each with radius of curvature of at least 5 mm, and the end edge of the marked corner part (1a) is provided substantially with a maximum radius of curvature or a minimum radius of curvature.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: November 17, 2009
    Assignee: OJI Paper Co., Ltd.
    Inventors: Yumi Hada, Hiroyuki Kido, Masaharu Nojima
  • Patent number: 7585813
    Abstract: The reversible thermosensitive recording medium according to the present invention comprises a support, a thermosensitive layer and a protective layer in order, the thermosensitive layer comprises an electron-donating coloring compound and an electron-accepting compound and reversibly changes the color depending on temperatures, and the protective layer comprises a reactive heterocyclic compound, and inorganic fine particles of which surface is at least partially treated into hydrophobic, alternatively the protective layer comprises inorganic fine particles of which number-average particle size is 100 nm or less and of which surface is at least partially coated with organic silane compounds.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: September 8, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Hitoshi Shimbo, Tadafumi Tatewaki, Shin Yamamoto, Kunio Hayakawa, Shinya Kawahara
  • Patent number: 7576036
    Abstract: A heat-sensitive recording material including at least one heat-sensitive recording layer and a protective layer provided in this order on a support, wherein the protective layer contains a compound represented by the following Formula (1) and/or a compound represented by the following Formula (2), a method for manufacturing the heat-sensitive recording material, and a heat-sensitive recording method using the heat-sensitive recording material provided.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: August 18, 2009
    Assignee: FUJIFILM Corporation
    Inventors: Hideo Nagasaki, Hisato Nagase, Toshihide Aoshima, Shiki Ueki
  • Patent number: 7553796
    Abstract: The present invention provides a reversible thermosensitive recording medium including a support and a thermosensitive recording layer thereon, in which the thermosensitive recording layer contains an electron-donating coloring compound and an electron-accepting compound, and the thermosensitive recording layer is capable of forming a relatively developed condition and a relatively erased condition depending on at least one of the difference of heating temperatures and the difference of cooling rates following to heating, and in which the electron-accepting compound contains a phenol compound expressed by General Formula (1): where, in the General Formula (1), “l” represents an integer of 1 to 3 and “m” represents an integer of 23 or more.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: June 30, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoshi Yamamoto, Kyoji Tsutsui, Hiromi Furuya, Kyohji Okada
  • Patent number: 7504360
    Abstract: There are disclosed imaging members wherein a chemical compound in a crystalline form is converted, at least partially, and preferably substantially completely or completely, to a liquid in the amorphous form, the liquid having intrinsically a different color from the crystalline form. Also described are imaging methods utilizing the imaging members. The conversion of the compound from the crystalline form to the liquid form can be effected by the application of thermal energy or by other imaging techniques.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: March 17, 2009
    Assignee: Zink Imaging, Inc.
    Inventors: Peter K. Chu, Chien Liu, Stephen J. Telfer
  • Patent number: 7501381
    Abstract: To improve defective coloring at the time of forming an image as well as defective color erasing at the time of erasing an image, reducing damages of an information processing unit, the present invention provides a reversible thermosensitive recording medium which includes a support having flexibility, a reversible thermosensitive recording layer, an information processing unit having an information recording element, and a buffer layer, in which the information processing unit and the buffer layer are disposed on the opposite surface of the support on which the reversible thermosensitive recording layer is disposed.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: March 10, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Kutami, Shin Yamamoto
  • Patent number: 7494954
    Abstract: The present invention relates to a heat-sensitive recording material having a high recording sensitivity, which is capable of providing excellent image quality even when recording is carried out at low energy, and causes reduced coating defects. The invention provides a heat-sensitive recording material obtained by forming, on a paper support, an undercoat layer and then a heat-sensitive recording layer, characterized in that: 1) the undercoat layer has at least two undercoat layers including a first undercoat layer and a second undercoat layer; and 2) the heat-sensitive recording layer has a thickness standard deviation of 0.30 or less, and also provides a method for producing the heat-sensitive recording material.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: February 24, 2009
    Assignee: Oji Paper Co., Ltd.
    Inventors: Hisayoshi Mito, Takeshi Shikano, Keiichi Inubushi
  • Patent number: 7476642
    Abstract: Provision of a thermally sensitive recording medium made up of an undercoating layer containing a pigment and a binder as main components and a thermally sensitive color-developing layer containing a colorless or pale-colored basic leuco dye and a color-developing agent which develops a color by reacting with said basic leuco dye as main components on a substrate, wherein the undercoating layer contains a water-retention agent and a pigment whose oil-absorbing capacity prescribed by JIS K 5105 is from 80 cc/100 g to 120 cc/100 g as a pigment. Further, the solids concentration of a coating for the undercoating layer is from 25% to 45% and the dynamic water-retention capacity, which is Water retention measured with AA-GWR, is 350 g/m2 or less.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: January 13, 2009
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Mizuho Shimoyama, Kaoru Hamada, Seiki Yoneshige, Kenji Hirai
  • Patent number: 7476643
    Abstract: A thermal recording material is provided including a substrate, a thermal coloring layer located overlying the substrate, and a protective layer located overlying the thermal coloring layer. The protective layer includes a binder resin, a crosslinker, a filler; and a release agent. The release agent is a spherical and particulate silicone compound having the following formula: (CH3SiO3/2)n, wherein n represents an integer greater than 15.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: January 13, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiaki Ikeda, Takeshi Kajikawa
  • Publication number: 20090004410
    Abstract: A spatial graphical user interface for interfacing with a plurality of data sources to create a layered image includes a content acquisition module configured to acquire a first primary image from any one of the data sources where the primary image has at least an image of one object thereon. A transparent layer generating module generates a transparent layer to be overlaid over the primary image which spatially corresponds to the primary image. A link generating module generates an icon on the transparent layer over the at least one object such that the icon represents a link to data contained in the data sources related to the object on the primary image. The layered image is the combined view of the primary image, the transparent layer and icons on the transparent layer.
    Type: Application
    Filed: May 12, 2006
    Publication date: January 1, 2009
    Inventors: Stephen C. Thomson, Peter E. Albu
  • Patent number: 7465694
    Abstract: A thermally sensitive recording medium has at least one layer on a substrate which is a thermally sensitive recording layer that contains a colorless or pale colored electron-donating leuco dye and an electron-accepting color-developing agent. At least one layer on the substrate contains a hydrated silicic acid compound which is treated by wet grinding treatment in a deposition process of the hydrated silicic acid compound. A thermally sensitive recording medium of high brightness, which is superior in color-developing sensitivity and coating layer strength and, further, has excellent head abrasion resistance, less debris adhering and sticking resistance is obtained.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: December 16, 2008
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Takashi Date, Mizuho Shimoyama, Koichi Yanai, Kenji Hirai
  • Patent number: 7452847
    Abstract: A reversible thermosensitive recording medium including a substrate, and a thermosensitive layer including an electron donating coloring compound, an electron accepting compound, and a phenol anti-oxidation agent containing one or more sulfur atoms having an alkyl group on one side. In addition, the thermosensitive layer reversibly changes its color tone depending on temperature to reversibly record and erase an image thereon.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: November 18, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroki Kuboyama, Satoshi Arai, Tadafumi Tatewaki, Satoru Sampei
  • Publication number: 20080280757
    Abstract: Provided is a thermosensitive recording material that comprises a support, a thermosensitive coloring layer on the support, and a protective layer on the thermosensitive coloring layer, wherein the thermosensitive coloring layer comprises a leuco dye and a color developer, and the protective layer comprises a diacetone-modified polyvinyl alcohol resin and a (meth)acrylic resin.
    Type: Application
    Filed: September 12, 2007
    Publication date: November 13, 2008
    Inventors: Yoshiaki Matsunaga, Shinji Takano, Takeshi Kajikawa, Toshiaki Ikeda, Masafumi Kumoda
  • Publication number: 20080269050
    Abstract: By printing a bar code (comprising dark and light regions) or parts of such a bar code with an ink containing a dye, which changes colour in the presence of an acid or a base to remove the contrast between the regions of the bar code, and a neutral compound which releases an acid or a base on exposure to energising radiation, a bar code can be produced that becomes unreadable after a pre-determined interval. This can be used as a time/temperature indicator to ensure that products, which might be perishable, associated with such a bar code are not used by the public.
    Type: Application
    Filed: September 14, 2006
    Publication date: October 30, 2008
    Applicant: SUN CHEMICAL CORPORATION
    Inventors: Farid Azizian, Michael William Leonard
  • Patent number: 7432223
    Abstract: A reversible thermosensitive recording medium including a substrate, a reversible thermosensitive recording layer and an intermediate layer. The reversible thermosensitive recording layer is configured to reversibly record and erase an image therein and disposed overlying the substrate and includes a binder resin and a reversible thermosensitive coloring composition. The reversible thermosensitive coloring composition includes an electron donating coloring compound and an electron accepting compound. The intermediate layer includes another binder resin and a content of hollow particles having a hollow ratio not less than 70% and a ratio of a maximum particle diameter thereof to a 50% cumulative particle diameter of from 2.0 to 3.0. The reversible thermosensitive recording layer achieves a colored state when heated to a temperature not lower than a melting point thereof, and achieves a discolorization state when heated to a temperature lower than the melting point.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: October 7, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Kunio Hayakawa, Shinya Kawahara, Hitoshi Shimbo
  • Patent number: 7425522
    Abstract: The present invention aims to provide thermosensitive recording materials that allow excellent stampability, prevent sticking, represent less image-density decrease due to image-shielding by protective layers, and generate less printing residual matters on heads. Specifically, the present invention provided thermosensitive recording materials that comprises a protective layer, a thermosensitive recording layer and a support in this order, wherein the thermosensitive recording layer develops a color by heating, the protective layer comprises a binder resin and an inorganic filler, the volume average particle diameter of the inorganic filler is 0.6 to 5.0 ?m, the content of the inorganic filler is 150 to 400% by mass based on the binder resin, and the protective layer comprises crosslinked polymethylmethacrylate particles.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: September 16, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuhiro Kadota, Toshiaki Ikeda
  • Patent number: 7422996
    Abstract: There is provided a reversible thermosensitive recording medium including a support, an intermediate layer, and a thermosensitive recording layer which reversibly changes a color thereof depending on a temperature, wherein the thermosensitive recording layer contains an electron-donating coloring compound, and an electron-accepting compound represented by the following general formula 1: where, n is an integer of 23 or more, and wherein the intermediate layer is disposed between the support and the thermosensitive recording layer, and contains hollow particles having a void ratio of 70% or more, a maximum diameter D100 of 5.0 ?m to 10.0 ?m, and a ratio D100/D50 of 2.0 to 3.0 where the ratio D100/D50 is a ratio of the maximum diameter D100 to a 50% cumulative particle diameter D50 of the hollow particles.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: September 9, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Hitoshi Shimbo, Kunio Hayakawa, Shinya Kawahara
  • Patent number: 7419935
    Abstract: A heat-sensitive recording material comprising on one surface of a substrate a heat-sensitive coloring layer comprising a leuco dye and a color developer, wherein the heat-sensitive recording material comprises a layer which comprises a copolymer of a (meth)acryloyloxyalkylammonium salt and styrene; and the layer which comprises the copolymer of the (meth)acryloyloxyalkylammonium salt and styrene is at least any one of a back layer, an under layer and a protective layer.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: September 2, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuhiro Kadota, Takeshi Kajikawa, Kunihiko Hada
  • Patent number: 7405179
    Abstract: A multicolor thermosensitive recording medium having thermosensitive coloring layers which are formed by printing water-dispersion thermosensitive inks or water-dispersion inks on an ink receptive layer using a printing plate. The recording medium comprises an ink receptive layer formed on a surface of a substrate, thermosensitive coloring layers developing different colors, which are integrated with the ink receptive layer by impregnating the ink receptive layer with a water-dispersion thermosensitive ink that is prepared by dispersing in water a pigment component including at least an electron-accepting compound and electron-donating compound. The color density and coloring sensitivity of the thermosensitive coloring layers have been improved by providing over the thermosensitive coloring layers an auxiliary coloring layer containing at least one of an electron-accepting compound and a sensitizer.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: July 29, 2008
    Assignee: Toshiba TEC Kabushiki Kaisha
    Inventors: Takayuki Hiyoshi, Toshiyuki Tamura
  • Publication number: 20080153699
    Abstract: The present invention generally provides a copying system, preferably for a personal calendar system, whereby notes can be transferred from a notepad to a single sheet of the calendar by writing the information while the note sheet is positioned on the calendar sheet. A separator or other backing board is not needed to ensure that the information is not transferred to additional calendar pages in the stack of calendar pages. In one embodiment the calendar sheets have a first surface and a second surface, the first surface having carbonless developer material thereon. Conversely, the notepad sheets have a first surface and a second surface, the second surface having a carbonless color-former material thereon. Additionally, the notepad sheets have a removable and repositionable pressure sensitive adhesive on at least a portion of the second surface thereof.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 26, 2008
    Inventors: Craighton Berman, Rick Ellison, Iulius Lucaci, Kurt Sward, Evan Ward