Having A Color Desensitizer Patents (Class 503/205)
  • Patent number: 9790383
    Abstract: A marking system comprises a substrate having a surface coated with a color-triggering developer and a deactivating ink composition; and a marking composition comprising at least one color precursor. At least one “non-color developing portion” of the surface is coated with both the color-triggering developer and the deactivating ink composition, and at least one “color-developing portion” of the surface is coated with the color-triggering developer and is not coated with the deactivating ink composition. Color development occurs at the color-developing portion(s) and does not occur at the non-color developing portion(s) upon application of the marking composition to the surface of the substrate.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: October 17, 2017
    Assignee: CRAYOLA LLC
    Inventors: Luis Rodrigo Pineiro, Robert Nicholas Amabile
  • Patent number: 9105883
    Abstract: The flow field plates in a bipolar plate assembly for a fuel cell can be both bonded and sealed appropriately using microencapsulated adhesives. This offers several advantages over using other adhesives which may have limited pot life and/or require lengthy curing periods at elevated temperature during which time the plates must be stably positioned and under compression.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: August 11, 2015
    Assignees: Daimler AG, Ford Motor Company
    Inventor: Simon Farrington
  • Publication number: 20150148227
    Abstract: A marking system comprises a substrate having a surface coated with a color-triggering developer and a deactivating ink composition; and a marking composition comprising at least one color precursor. At least one “non-color developing portion” of the surface is coated with both the color-triggering developer and the deactivating ink composition, and at least one “color-developing portion” of the surface is coated with the color-triggering developer and is not coated with the deactivating ink composition. Color development occurs at the color-developing portion(s) and does not occur at the non-color developing portion(s) upon application of the marking composition to the surface of the substrate.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 28, 2015
    Applicant: Crayola LLC
    Inventors: Luis Rodrigo Pineiro, Robert Nicholas Amabile
  • Patent number: 8889590
    Abstract: An irreversible thermochromic ink composition can include thermochromic pigment capsules dispersed in a carrier. The irreversible thermochromic pigment capsules can include an inner core having a color changing dye, a color activator for activating the color changing dye, and a wax, an outer core surrounding the inner core and comprising a color destroying agent, and a shell surrounding the outer core. Alternatively, the irreversible thermochromic pigment capsules can include an inner core having a color destroying agent and a wax, an outer core surrounding the inner core and comprising a color changing dye and a color activator for activating the color changing dye, and a shell surrounding the outer core. Written marks made with the irreversible thermochromic inks can be rendered a different color or substantially colorless by application of a sufficient amount of heat to melt or substantially liquefy the wax in the irreversible thermochromic pigment capsules.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: November 18, 2014
    Assignee: Sanford, L.P.
    Inventor: Wing Sum Vincent Kwan
  • Patent number: 8865621
    Abstract: The disclosure is generally related to an irreversible thermochromic ink composition and, more particularly, to an irreversible thermochromic ink composition comprising a carrier and thermochromic capsules, the thermochromic capsules comprising a shell and a core, the core comprising an eradicable dye capable of becoming substantially colorless and/or of changing color from a first colored state to a second colored state when exposed to an eradicator.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: October 21, 2014
    Assignee: Sanford, L.P.
    Inventor: Wing Sum Vincent Kwan
  • Patent number: 8791045
    Abstract: The invention describes a color-developing composition that contains at least three major components: (1) a leuco dye or a combination of leuco dyes, (2) an color-developer or a combination of color-developers that can form colored complexes with the leuco dyes, and (3) a desensitizer to temporarily remove the effect of the developer so the leuco dye appears in its colorless form. An optional binder may be included so that the composition may be applied to a substrate as an ink. The ink composition may be applied to synthetic polymeric substrates and other substrates that are incorporated into absorbent articles or personal care products.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: July 29, 2014
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Ning Wei, Xuedong Song, JinHo Ryu, JunMo Gil
  • Patent number: 8754005
    Abstract: The present disclosure relates to a color-changing composition and to a substrate having the color-changing compositions disposed thereon. The color-changing composition includes a leuco dye, a color-developer and a desensitizer. The color-changing composition changes from a colorless or largely colorless composition to color upon being wetted with an aqueous liquid. The color-changing composition remains colorless or largely colorless prior to exposure to high relative humidity conditions.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: June 17, 2014
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: JunMo Gil, Ning Wei, JinHo Ryu, Xuedong Song
  • Patent number: 8703647
    Abstract: The present disclosure relates to a color-changing composition and to a substrate having the color-changing compositions disposed thereon. The color-changing composition includes a leuco dye, a color-developer and a desensitizer. The color-changing composition changes from a colorless or largely colorless composition to color upon being wetted with an aqueous liquid. The color-changing composition remains colorless or largely colorless prior to exposure to high relative humidity conditions.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: April 22, 2014
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: JunMo Gil, Ning Wei, JinHo Ryu, Xuedong Song
  • Patent number: 8664156
    Abstract: An irreversible thermochromic ink composition can include thermochromic pigment capsules dispersed in a carrier. The irreversible thermochromic pigment capsules can include an inner core having a color changing dye, a color activator for activating the color changing dye, and a wax, an outer core surrounding the inner core and comprising a color destroying agent, and a shell surrounding the outer core. Alternatively, the irreversible thermochromic pigment capsules can include an inner core having a color destroying agent and a wax, an outer core surrounding the inner core and comprising a color changing dye and a color activator for activating the color changing dye, and a shell surrounding the outer core. Written marks made with the irreversible thermochromic inks can be rendered a different color or substantially colorless by application of a sufficient amount of heat to melt or substantially liquefy the wax in the irreversible thermochromic pigment capsules.
    Type: Grant
    Filed: December 31, 2011
    Date of Patent: March 4, 2014
    Assignee: Sanford, L.P.
    Inventor: Wing Sum V. Kwan
  • Patent number: 8163670
    Abstract: To provide a thermal recording medium, which can realize easy maintenance, does not produce wastes such as cartridges, and can realize easy control of recording sheets, and an apparatus and method for image formation. [MEANS FOR SOLVING PROBLEMS]A high-temperature color development capsule (23), a low-temperature color development capsule (27), and a low-temperature color development suppression capsule (28) are incorporated in a recording sheet (10). In a printer, the low-temperature color development capsule (27) is subjected to low-temperature color development and is then pressed to break the low-temperature color development suppression capsule (28), whereby low-temperature color development is fixed. Thereafter, the high-temperature color development capsule (23) is subjected to high-temperature color development.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: April 24, 2012
    Assignee: Alps Electric Co., Ltd
    Inventor: Hiroyasu Miyata
  • Patent number: 7858555
    Abstract: A latent image developing system, methods for imaging and developing images, and systems and methods for blocking or erasing latent images. The latent image developing system includes a substrate containing a colorless image deposited thereon. A developer instrument is used to provide a visible image. The developer instrument includes a developer composition reactive with the colorless image. An image blocking instrument is provided for concealing at least a portion of the visible image. The image blocking instrument is provided by a blocking composition applicator and an aqueous mixture of blocking composition and water.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: December 28, 2010
    Inventor: Bryan A. Netsch
  • Patent number: 7851409
    Abstract: A method of printing a time limited document is disclosed. The method includes the steps of selecting an ink having a fading time, and printing the time limited document using the selected ink. A printer and associated cartridge are also disclosed.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: December 14, 2010
    Inventor: Yongyong Xu
  • Publication number: 20090170698
    Abstract: To provide a thermal recording medium, which can realize easy maintenance, does not produce wastes such as cartridges, and can realize easy control of recording sheets, and an apparatus and method for image formation. [MEANS FOR SOLVING PROBLEMS]A high-temperature color development capsule (23), a low-temperature color development capsule (27), and a low-temperature color development suppression capsule (28) are incorporated in a recording sheet (10). In a printer, the low-temperature color development capsule (27) is subjected to low-temperature color development and is then pressed to break the low-temperature color development suppression capsule (28), whereby low-temperature color development is fixed. Thereafter, the high-temperature color development capsule (23) is subjected to high-temperature color development.
    Type: Application
    Filed: April 16, 2007
    Publication date: July 2, 2009
    Inventor: Hiroyasu Miyata
  • Patent number: 7300699
    Abstract: An adhesive and a pressure-sensitive transfer adhesive tape formed by coating the adhesive on a base material are provided. The adhesive has a color when applied to a substrate and, after application can be decolored. The adhesive comprises a colored material colored by reacting a leuco dye with a developer, a material (decoloring material) having a decoloring effect by acting on the colored material, and microcapsules including a material allowing both of the colored and decoloring materials to react by acting on at least one of them.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: November 27, 2007
    Assignee: Tombow Pencil Co., Ltd.
    Inventor: Naohito Sakai
  • Patent number: 7265077
    Abstract: A latent image developing system, a novelty kit, and an ink composition for printing latent images on a substrate. The latent image developing system includes a first substrate containing a colorless image deposited on a first surface thereof. A developer component is provided that is reactive with the colorless image to provide a visible image. The developer component is selected from a developer instrument, a developer finger paint, a developer coating on a first surface of a substantially transparent substrate for adhesive attachment to the first substrate, and a combination of one or more of the developer instrument, the developer finger paint, and the developer coating. The latent image developing system optionally includes, an image blocking instrument for concealing at least a portion of the visible image. The image blocking instrument includes a blocking composition applicator and an aqueous mixture of blocking composition and water.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: September 4, 2007
    Inventor: Bryan A. Netsch
  • Patent number: 6894001
    Abstract: A functional material is proposed in which by developing colors, the degree of volatilization of a volatile agent can be visually checked, and the color is stabilized. A volatile agent having desensitizing property, a coloring agent, a developer and an embedding material are mixed while heating and melting, and retained on a carrier.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: May 17, 2005
    Assignee: Rengo Co., Ltd.
    Inventors: Hidenao Saito, Koichi Taniguchi, Dazhong Wang
  • Patent number: 6410478
    Abstract: A reversible thermosensitive recording medium has a support, and a reversible thermosensitive recording layer formed thereon containing a reversible thermosensitive coloring composition of an electron-donating coloring compound and an electron-accepting compound, capable of reversibly assuming a color-developed state or a decolorized state, and a decolorization accelerating agent of formula (I): wherein p is an integer of 0 to 3; q and r are each independently an integer of 1 to 3; X1, X2, and X3 are each a bivalent hetero-atom-containing group; R1, R2, and R3 are each a hydrocarbon group with 1 to 22 carbon atoms, provided that at least one of R1, R2 or R3 is an aliphatic hydrocarbon group having 8 or more carbon atoms; and R4 is a hydrogen atom, hydroxyl group or an aliphatic hydrocarbon group having 1 to 8 carbon atoms. The above recording medium is used as an image display medium in an image display apparatus, and as a rewritable paper.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: June 25, 2002
    Assignee: Ricoh Company, Ltd.
    Inventors: Masafumi Torii, Hiroaki Matsui, Masaru Shimada
  • Patent number: 6329317
    Abstract: A method of decoloring an image formed on a paper sheet by using an image forming material containing a color former, a developer and a decolorizer, comprising the steps of bringing a solvent into contact with the image forming material for decoloring the image, and removing the residual solvent from the paper sheet.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: December 11, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Satoshi Takayama, Shigeru Machida, Kenji Sano
  • Patent number: 6326332
    Abstract: A decolorable material contains a color former, a developer, a matrix material, and a decolorant capable of physically or chemically adsorbing the developer, the developer having a molecular weight of 120 to 210. The material is capable of forming a clear image, and the image formed from the material can be decolored well, even when the amount of the decolorant used is small.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: December 4, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Satoshi Takayama
  • Patent number: 6265344
    Abstract: A transparent thermosensitive recording material has a transparent support and a thermosensitive recording layer formed thereon, with a non-image area of the transparent thermosensitive recording material exhibiting an absorbance in a range from 0.5 to 1.2 when irradiated with light with a wavelength of 380 nm, and an absorbance of 0.7 or less when irradiated with light with a wavelength of 420 nm.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: July 24, 2001
    Assignee: Ricoh Company, Ltd.
    Inventors: Hitoshi Shimbo, Hideo Suzaki
  • Patent number: 6258746
    Abstract: A thermally imagable business record, such as a form, label, tag, or the like is provided which may be activated to form human and/or machine readable images as well as different colored images. The record comprises a substrate having a thermally imagable coating on substantially its entire surface which forms a first color when activated, and having a desensitized area on at least one area of its surface which may be overcoated with a thermally imagable coating capable of forming a different color upon activation than the first thermally imagable coating. The first thermally imagable coating provides images which are of machine readable quality, while the additional thermally imagable coatings provide images of a different color to designate selected areas on the form or label to a user.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: July 10, 2001
    Assignee: The Standard Register Company
    Inventors: Rajendra Mehta, Gary Doll, Mark Dotson, A. Dale Lakes, Rick L. Shields
  • Patent number: 6248692
    Abstract: An erasable image forming material includes a color former, a developer, and a decolorizer and is erasable by contact with an erase solvent. Free energy &agr; required for the decolorizer and the developer to form a complex and free energy &bgr; required for the color former and the developer to form a complex have a relationship represented by &agr;≦&bgr;≦10 Kcal/mol.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: June 19, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenji Sano, Satoshi Takayama, Shigeru Machida
  • Patent number: 6207613
    Abstract: A reversible thermosensitive coloring composition including an electron donating coloring agent and an electron accepting color developer, wherein the composition achieves a colored state when heated at a temperature not lower than a coloring temperature and then cooled at a cooling speed (a), and the composition in the colored state achieves a non-colored state when heated at a temperature lower than the coloring temperature and not lower than an erasing temperature, or when heated at a temperature not lower than the coloring temperature and then cooled relatively slowly compared to the cooling speed (a), and wherein the electron accepting color developer includes a phenolic compound having the following formula (1): wherein n is an integer of from 1 to 3; m is an integer of from 1 to 20; r is 0 or an integer of from 1 to 3; X and Y independently represent a divalent group including a hetero atom; R1 represents a hydrocarbon group having from 1 to 20 carbon atoms; and R2 represents a hydroc
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: March 27, 2001
    Assignee: Ricoh Company, Ltd.
    Inventors: Masafumi Torii, Hiroaki Matsui, Masaru Shimada
  • Patent number: 6184180
    Abstract: Disclosed is a reversible heat-sensitive recording material comprising a support and a reversible heat-sensitive recording layer containing a dye precursor which is usually colorless or a pale color and a reversible color developing agent capable of causing a reversible change in color density of the dye precursor due to the difference in cooling rate after heating, and the reversible color developing agent is a compound represented by the following formula (I): wherein R1 and R2 may be the same or different from each other and each represent a C1-18 divalent hydrocarbon group; R3 represents a C1-24 hydrocarbon group; X1 represents a divalent connecting group having at least one —CONH— bonding; X2 represents an oxygen atom or a sulfur atom; n is an integer of 1 to 3; and m is 0 or 1.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: February 6, 2001
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Jun Maruyama, Hidekazu Sano
  • Patent number: 6015589
    Abstract: A thermally imagable business record, such as a form, label, tag, or the like is provided which may be activated to form human and/or machine readable images as well as different colored images. The record comprises a substrate having a thermally imagable coating on substantially its entire surface which forms a first color when activated, and having a desensitized area on at least one area of its surface which may be overcoated with a thermally imagable coating capable of forming a different color upon activation than the first thermally imagable coating. The first thermally imagable coating provides images which are of machine readable quality, while the additional thermally imagable coatings provide images of a different color to designate selected areas on the form or label to a user.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: January 18, 2000
    Assignee: The Standard Register Company
    Inventors: Rajendra Mehta, Gary Doll, Mark Dotson, A. Dale Lakes, Rick L. Shields
  • Patent number: 5994021
    Abstract: A thermographic material is disclosed which comprises a support and provided thereon, a recording layer containing a photolytic free radical generating agent capable of providing a free radical on absorption of light, a dye decolored by the free radical, and an anti-decolorizing agent, the photolytic free radical generating agent and dye being contained in a microcapsule in the recording layer, and the anti-decolorizing agent being present outside the microcapsule in the recording layer, wherein an image is formed by imagewise heating the thermographic material to mix the anti-decolorizing agent with the photolytic free radical generating agent and the dye to form a latent image, and then exposing the heated material to light which the photolytic free radical generating agent absorbs, so that the dye at the latent image portions is not decolored and the dye at portions other than the latent image portions is decolored.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: November 30, 1999
    Assignee: Konica Corporation
    Inventors: Eisaku Katoh, Shuji Kida, Osamu Hatano, Kenzo Nakazawa
  • Patent number: 5994262
    Abstract: A sheet set for temperature control comprises: a recording sheet that is provided on one surface of a substrate and has a recording layer incorporating a zinc salt of a salicylic acid derivative as a color acceptor, or a leuco dye; and an adhesive sheet that is provided on one surface of another substrate and has a first adhesive layer incorporating an adhesive, an ester derivative of the formula (1) or (2), and a leuco dye, or a zinc salt of a salicylic acid derivative as a color acceptor.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: November 30, 1999
    Assignee: OJI Paper Co., Ltd.
    Inventors: Takeshi Iida, Tetsuo Tsuchida
  • Patent number: 5888929
    Abstract: The present invention provides sheet sets for temperature control comprising a heat sensitive recording sheet having a heat sensitive recording layer incorporating a colorless or light-colored basic dye and a color acceptor, provided on a surface of a substrate, and an adhesive sheet having a first adhesive layer incorporating a decolorizing agent, provided on a surface of another substrate, and wherein, when using the sheet sets, the first adhesive layer of the adhesive sheet is laminated on the heat sensitive recording layer of the heat sensitive recording sheet.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: March 30, 1999
    Assignee: Oji Paper Co., Ltd.
    Inventors: Takeshi Iida, Tetsuo Tsuchida
  • Patent number: 5885926
    Abstract: The present invention provides a heat sensitive multiple color recording material which produces different color tone by changing applied thermal energy and which has stable developed color image and little color mixture. The heat sensitive color recording material comprises: (a) a substrate, (b) a sublimable dye coloring layer, formed on the substrate (a), and (c) at least one leuco dye color-developing layer, formed on the sublimable dye coloring layer (b), wherein the sublimable dye coloring layer (b) is composed of a sublimable dye layer and a thermoplastic resin layer for fixing the sublimable dye. The leuco dye color-developing layer (c) contains a leuco dye and a developing agent for the leuco dye, and also contains, either within the leuco dye color-developing layer (c) or as an adjacent layer, microcapsules containing a color eraser for erasing the developed color.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: March 23, 1999
    Assignee: Naigai Carbon Ink Co., Ltd.
    Inventor: Shinichi Matsumoto
  • Patent number: 5880062
    Abstract: Disclosed is a printing process which comprises (a) incorporating into a printing apparatus capable of generating ink jet images a carbonless paper set comprising a first sheet, a second sheet, and optional intermediate sheets situated between the first sheet and second sheet, wherein the first sheet comprises paper coated on one surface with a color former and the second sheet comprises paper coated on one surface with a color developer, and wherein, when the carbonless paper set is assembled, the surface of the first sheet coated with the color former is in contact with the surface of a sheet coated with the color developer and the surface of the second sheet coated with the color developer is in contact with the surface of a sheet coated with the color former; (b) incorporating into the printing apparatus an ink jet ink comprising water, an organic component, and a desensitizing agent capable of interacting either (i) with the color former so that the color former's subsequent ability to interact with the
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: March 9, 1999
    Assignee: Xerox Corporation
    Inventors: David J. Sanders, Francoise M. Winnik, Marcel P. Breton
  • Patent number: 5876898
    Abstract: A heat sensitive recording material is provided which can be simply prevented from falsification and is excellent in contrast between fixed portion and image portion, and a recording method using it is further provided. Moreover, there is provided a heat sensitive recording material capable of carrying out multicolor recording which is excellent in contrast of the image portions, density of the image portions, and image storage stability.
    Type: Grant
    Filed: July 16, 1996
    Date of Patent: March 2, 1999
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Haruhiko Ikeda, Shigetoshi Hiraishi, Koji Suematsu
  • Patent number: 5639708
    Abstract: Business forms, particularly financial instruments such as checks, money orders, bank drafts, etc., are constructed with CF and CB, or self-imaging, sheets. MICR characters may be printed on the sheets without subsequent smearing by applying a UV curable ink to a CF or self-imaging sheet so as to block the CF or self-imaging material at the selected portion to which the ink is applied, thereby rendering it incapable of functioning as a CF or self-imaging element. The ink is applied to a moving web in a continuous manner prior to printing to form a continuous strip of ink, which moves past a UV radiation source so that it is quickly cured and does not adversely affect high speed production. The ink may also be applied to a CB, CF, or self-imaging sheet as a security feature, selectively blocking the transmission of confidential indicia at the selected portion of the sheet with which it is associated.
    Type: Grant
    Filed: December 5, 1991
    Date of Patent: June 17, 1997
    Assignee: Moore Business Forms, Inc.
    Inventors: John C. Golemo, Kenneth Riggs
  • Patent number: 5583088
    Abstract: A reversible thermosensitive recording medium includes a substrate and a recording layer formed thereon, the recording layer including an electron donor coloring compound, an electron accepter compound capable of inducing color formation in the electron donor coloring compound, a decolorization promoting agent containing at least one long chain aliphatic compound including three hydroxyl groups at a terminal portion of the molecule thereof, and a binder resin.
    Type: Grant
    Filed: June 29, 1995
    Date of Patent: December 10, 1996
    Assignee: Ricoh Company, Ltd.
    Inventor: Fumio Kawamura
  • Patent number: 5550097
    Abstract: A color recording method and device which is capable of color recording images on large-sized paper in which a first color is developed in direct heat sensitive paper by directly supplying heat energy of thermal heads to the direct heat sensitive paper. Furthermore, in order to transfer a color ink to the direct heat sensitive paper to thereby obtain a second color, the heat energy of the thermal heads is supplied to a plurality of ink ribbons which are coated with both a desensitizing material for controlling the coloring reaction of the direct heat sensitive paper and the desired colored inks.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: August 27, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Souhei Shibasaki, Yukio Sawano, Hiroto Nagashima
  • Patent number: 5491121
    Abstract: An array of color-coded papers that can be collected and recycled with white paper without separation. The sheets are individually color-coded with a printing ink including an oil-based vehicle component and a dye-free pigment component that is dispersible in a surfactant-water mix used to recycle the paper. Preferably, the color code is on a marginal area, with the image area comprising the remainder of the sheets. The invention also relates to multi-part business form sets using an array of such sheets, arranged so that each sheet is distinguishable from another sheet in the form set by the color code.
    Type: Grant
    Filed: November 17, 1993
    Date of Patent: February 13, 1996
    Inventor: Ron Kuchta
  • Patent number: 5350634
    Abstract: A thermochromic composition which comprises (1) an electron-donating chromogenic organic compound, (2) an electron-accepting compound, and (3) at least one desensitizer selected from among diphenylamine derivatives of-the following formulas: ##STR1## wherein R.sup.1 and R.sup.2 each independently is H, an alkyl group containing 1 to 22 carbon atoms, ##STR2## (in which R.sup.3 and R.sup.4 each independently is H, an alkyl group containing 1 to 4 carbon atoms). A thermochromic composition which comprises (1) an electron-donating chromogenic organic compound, (2) an electron-accepting compound, (3) at least one desensitizer selected from among diphenylamine derivatives mentioned above, and (4) a thermochromic transition temperature modifier. A thermochromic composition which comprises one of the thermochromic compositions mentioned above as enclosed in microcapsule.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: September 27, 1994
    Assignee: Sakura Color Products Corporation
    Inventors: Masaaki Sumii, Fumiko Sakai, Yasuyuki Yoshimura
  • Patent number: 5350633
    Abstract: A thermochromic composition which comprises (1) an electron-donating chromogenic organic compound, (2) an electron-accepting compound, and (3) at least one desensitizer selected from among carbazole derivatives of the following formulas: ##STR1## wherein R is an alkyl group containing 1 to 22 carbon atoms, a phenyl group or a benzyl group and X is a hydrogen atom, a halogen atom, --NH.sub.2, --NO.sub.2 or --CHO; ##STR2## wherein R is an alkyl group containing 1 to 22 carbon atoms and X is a hydrogen atom, a halogen atom, --NH.sub.2, --NO.sub.2 or --CHO. A thermochromic composition which comprises (1) an electron-donating chromogenic organic compound, (2) an electron-accepting compound, (3) at least one desensitizer selected from among carbazole derivatives mentioned above, and (4) a thermochromic transition temperature modifier. A thermochromic composition which comprises one of the thermochromic compositions mentioned above as enclosed in microcapsule.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: September 27, 1994
    Assignee: Sakura Color Products Corporation
    Inventors: Masaaki Sumii, Fumiko Sakai, Yasuyuki Yoshimura
  • Patent number: 5306686
    Abstract: A negative-acting, photothermographic material having a first layer comprising an amine compound and a second layer comprising an amine-reactive dye which undergoes a visible change when in reactive association with the amine compound. The amine compound and the amine-sensitive dye are in non-reactive association at ambient and moderate temperatures, but at elevated temperatures the two components are able to interact to produce a visible change in the heated areas of the material. The materials are particularly suitable for the preparation of overhead projector transparencies.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ranjan C. Patel, John H. A. Stibbard, Darren Cooper, Terence W. Baldock, Donald J. Newman, John J. Stofko
  • Patent number: 5281569
    Abstract: A desensitizing ink for printing by wet or dry offset, flexographic or typographic printing is disclosed and claimed. This ink contains at least one desensitizing agent, at least one ink binder which is polymerizable or crosslinkable by UV light or electron beam radiations and, if necessary, an initiator system. Thus, the drying time of the printings is greatly reduced. The ink is free from vaporizable ink solvents.
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: January 25, 1994
    Assignee: SICPA International S.A.
    Inventors: Albert Amon, Laszlo K. Boksanyi
  • Patent number: 5236885
    Abstract: Disclosed are a sheet for taking a print of an object, the sheet comprising (a) a substrate, and (b) a coating layer formed over the whole surface or part of the surface of the substrate and comprising a colorless or pale-colored basic dye, a color developing material which develops a color on contact with the dye and an adhesive, the whole of the coating layer being colored by the color-forming reaction of the basic dye and the color developing material; a method of taking a print of an object with use of the sheet comprising applying a desensitizer to the object and contacting the desensitizer with the sheet; and a kit for this purpose comprising the sheet and a desensitizer.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: August 17, 1993
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventor: Tadashi Tanimoto
  • Patent number: 5154668
    Abstract: A single sheet of paper is divided into at least original and copy panels by fold line(s). Information entered on the two, front and back surfaces of the original panel are reproduced on the two surfaces of the copy panel by carbonless copy treatments. In one embodiment, the original panel is fully coated or partially coated with carbonless CB treatment, on both surfaces, and the copy panel is fully coated or partially coated with carbonless CF treatment. In a variation of this embodiment, the original panel is not coated, and the copy panel is coated in selected areas with carbonless SC treatment. In a second embodiment, the original panel is not coated, an image-transferring panel is fully coated on both surfaces with carbonless CB treatment, and the copy panel is fully coated with carbonless CF treatment. In a variation of this embodiment, the image-transferring panel is formed of a separate sheet of paper.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: October 13, 1992
    Inventor: Keith E. Schubert
  • Patent number: 5137494
    Abstract: Various configurations of "clear" areas for entering information on the front and back sides of an "original" page of a two-sided form are disclosed. The page may be the original page of a self-replicating form which includes a copy page and appropriate carbonless coatings. The clear area on the front side of the original page is offset from the clear area on the back side of the original page. A method for laying out the original page of the form, such as with a computer system, to ensure offset of the front and back clear areas, is also disclosed. A method of filling out "variable" information in the offset clear areas, such as with a computer system, is also disclosed.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: August 11, 1992
    Inventors: Keith E. Schubert, Gerald E. Linden
  • Patent number: 5130290
    Abstract: Disclosed are a water-sensitive coloring sheet comprising:(a) a substrate and(b) a water-sensitive coloring layer containing a colorless or pale-colored basic dye, a color developing material capable of forming a color on contact with the dye, a densensitizer and a binder, and a method for forming colored image on such water-sensitive coloring sheet by application of water.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: July 14, 1992
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventor: Tadashi Tanimoto
  • Patent number: 5035743
    Abstract: New nucleophilic urethanes are described and claimed, which are the reaction product of a monoisocyanate, a diisocyanate or a polyisocyanate with a basic alkoxylated amine whose hydroxyl functionality has been adjusted to a value of 0.5 to 2 by etherification, esterification and/or reaction with a monoisocyanate. These compounds are particularly used, individually or as a mixture, as neutralizing nucleophilic compositions in desensitizing inks for the printing by dry or humid offset, typographic, or flexographic methods, destined to locally neutralize the electrophilic layer of a chemical pressure sensitive copying set. The disclosed compounds have a better neutralizing power which allows to reduce the weight per surface unit of the desensitizing printing by at least a third.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: July 30, 1991
    Assignee: SICPA Holding SA
    Inventors: Albert Amon, Laszlo K. Boksanyi, Pierre Degott
  • Patent number: 4962009
    Abstract: An image-forming material comprising: (a) microcapsules, in which at least one leuco dye capable of developing a color by oxidation and at least one photooxidizing agent (preferably a combination of a lophine dimer and an organic halogeno-compound) are enclosed together, and (b) at least one reducing agent not enclosed in the microcapsules (preferably present in the form of an emulsified dispersion), thereby achieving image formation in a completely dried condition, and ensuring excellent freshness keeping property, image reproducibility and fixability.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: October 9, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shintaro Washizu, Jun Yamaguchi, Fumiaki Shinozaki, Akihiro Shimomura, Toshimasa Usami, Toshiaki Endo, Keiso Saeki
  • Patent number: 4931420
    Abstract: A temperature history indicator and its manufacturing method wherein the indicators are formed as chips, labels, tags or the like and accompanied with those goods or their packings which must be stored at a certain temperature or lower and when their storage temperature rises higher than the certain temperature over a not-permissible time period, this fact can be visibly shown by development or change of color caused by chemical matters in the indicator, characterized in that when temperature rises higher than a certain value, a hydrophobic organic compound enclosed in microcapsules melts and diffuses causing a dye-precursor and a color developer, which are prepared independently of the compound, to be contacted with each other to irreversibly achieve color development or change, that this color development or change system is rendered operative when the temperature rise continues to exceed a permissible time period, and that when the tops of the color development or change systems are coated with a transpare
    Type: Grant
    Filed: April 29, 1987
    Date of Patent: June 5, 1990
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Makoto Asano, Haruki Tsutsumi, Eishi Tanaka, Yoshiro Fuseya, Kiyoharu Hasegawa, Hiroyuki Akahori
  • Patent number: 4906604
    Abstract: In a multi-color heat sensitive recording material comprising a substrate and two or more heat sensitive color-forming layers thereon capable of forming different colors from each other, at least one of the heat sensitive color-forming layers containing a leuco dye and an acidic substance, the recording material characterized in that at least one piperidine derivative represented by the formula [I] ##STR1## wherein R.sub.1 is C.sub.1.about.30 aliphatic group residue which may have C.sub.2.about.20 alkoxycarbonyl group, or C.sub.1.about.30 aliphatic group residue which has ether linkage and oxycarbonyl group; R.sub.2, R.sub.3, R.sub.4, R.sub.5 and X are each methyl group or hydrogen atom; and l is an integer of 1 to 6, is incorporated at the position where a decolorizing function can be effected against the color-forming system comprising a leuco dye and an acidic substance.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: March 6, 1990
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Tosaku Okamoto, Tomoyuki Okimoto, Katsuhiko Ishida
  • Patent number: 4879267
    Abstract: A more efficient and versatile method for color and halftone reproduction of artwork utilizing a colorless formulation that can be incorporated into art materials. When a mildly acidic spray is applied to the artwork which contains the formulation, the formulation turns blue. The blue color allows reproduction of red and yellow in certain photographic systems and can also be used in halftone reproduction to preserve light colors during the exposure step to eliminate dots from the background areas.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: November 7, 1989
    Assignee: Fluorographic Services, Inc.
    Inventor: Charles P. Collier
  • Patent number: 4845071
    Abstract: A negative type heatsensitive recording material which can realize high contrast image suitable to overhead projector, comprising on a support a heatsensitive layer prepared by coating a composition containing an emulsified dispersion, which is obtained by dissolving a colorless or light colored electron donating dye precursor and a color developer in an organic solvent slightly soluble or insoluble in water then subjecting the resulting solution to an emulsifying dispersion treatment, and decolorizercontaining microcapsules.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: July 4, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akihiro Shimomura, Toshimasa Usami, Seiji Hatakeyama
  • Patent number: 4840927
    Abstract: A desensitizer composition consisting essentially of a 2,2,6,6-tetramethylpyperidine compound as a desensitizer and additives comprising a natural or synthetic high-molecular weight compound and a pigment, a color developer sheet containing the desensitizer composition and a process for forming an image using the color developer sheet. The composition exhibits superior desensitizing effects, especially when used with fluoran color formers.
    Type: Grant
    Filed: September 9, 1986
    Date of Patent: June 20, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shojiro Sano, Keiso Saeki