Source: https://patents.google.com/patent/US8058209
Timestamp: 2018-03-24 20:49:12
Document Index: 415259126

Matched Legal Cases: ['arts\n10', 'arts\n4', 'arts\n10', 'arts\n10', 'arts\n10', 'arts\n10', 'arts\n10', 'arts\n10', 'arts\n10', 'application No. 08']

US8058209B2 - Heat-sensitive recording material - Google Patents
US8058209B2
US8058209B2 US12050535 US5053508A US8058209B2 US 8058209 B2 US8058209 B2 US 8058209B2 US 12050535 US12050535 US 12050535 US 5053508 A US5053508 A US 5053508A US 8058209 B2 US8058209 B2 US 8058209B2
US12050535
US20080234128A1 (en )
In regard to attempts to achieve increased sensitivity, method have been proposed (see Japanese Patent Application Laid-Open (JP-A) Nos. 59-5093 and 59-225987) in which the thermal conductivity of the substrate is 0.04 kcal/m-hr-° C. and various types of hollow microparticles (resin, glass, aluminosilicates or the like) are used as the intermediate layer as disclosed in JP-A No. 55-164192. However, in these cases, it is difficult to form a uniform intermediate layer and the surface readily becomes uneven, leading to poor resolution (dot reproducibility) in the formed image. Furthermore, a method has been proposed (see JP-A No. 63-281886) in which styrene acrylic resin and polystyrene resin are used as the partition materials of the above-described hollow microparticles, and an intermediate layer is formed, the main components of which are non-foamed hollow microparticles with a hollow ratio of 30% or more (JP-A No. 02-214688). However, even in this case, adequate insulating effects cannot be obtained because the hollow ratio is low, so that the highly sensitive heat-sensitive recording material current being sought cannot be obtained.
The viscosity of the coating solutions used in curtain coating (as measured with type-B viscosity gauge at 25° C.) is preferably 100 mPa·s to 500 mPa·s, and more preferably 150 mPa·s to 400 mPa·s. When the viscosity of the coating solutions is less than 100 mPa·s, the coating solutions are mixed together, causing a drop in sensitivity. In addition, when the viscosity is higher than 500 mPa·s, differences occur in flow rate of the coating solutions between the central portion and portions near the edge guides over the length of the curtain nozzle, whereby the amount of deposits increases at the edges of the coating, creating raised portions on the coating.
Specific examples of monomers that can introduce cationic groups include trimethyl ammonium chloride, trimethyl-p-vinyl benzyl ammonium chloride, trimethyl-m-vinyl benzyl ammonium chloride, triethyl-p-vinyl benzyl ammonium chloride, triethyl-m-vinyl benzyl ammonium chloride, N,N-dimethyl-N-ethyl-N-p-vinyl benzyl ammonium chloride, N,N-diethyl-N-methyl-N—P-vinyl benzyl ammonium chloride, N,N-dimethyl-N-n-propyl-N-p-vinyl benzyl ammonium chloride, N,N-dimethyl-N-n-octyl-N-p-vinyl benzyl ammonium chloride, N,N-dimethyl-N-benzyl-N-p-vinyl benzyl ammonium chloride, N,N-diethyl-N-benzyl-N-p-vinyl benzyl ammonium chloride, N,N-dimethyl-N-(4-methyl) benzyl-N-p-vinyl benzyl ammonium chloride, N,N-dimethyl-N-phenyl-N-p-vinyl benzyl ammonium chloride, N,N-dimethyl aminoethyl(meth)acrylate, N,N-diethyl aminoethyl(meth)acrylate, N,N-dimethyl aminopropyl(meth)acrylate, N,N-diethyl aminopropyl(meth)acrylate, N,N-dimethyl aminoethyl(meth)acrylamide, N,N-diethyl aminoethyl(meth)acrylamide, N,N-dimethyl amino propyl(meth)acrylamide, methyl chloride of N,N-diethyl amino propyl(meth)acrylamide, ethyl chloride, methyl bromide, ethyl bromide, quaternized body due to methyl iodide or ethyl iodide, or a sulfonate, an alkyl sulfonate, an acetate or an alkyl carboxylate or the like which substitute the anions of these; diaryl amine, diaryl methylamine, diaryl ethylamine or salts thereof (for example, hydrochloride, acetate, sulfite and the like), diaryl dimethyl ammonium chlorides (chloride, acetic acid ions, sulfuric acid ions and the like as counter anions to that salt), and vinyl pyrindine and N-vinyl imidazole and salts thereof.
The present invention will be described in more detail below with reference to Examples and Comparative Examples, but the present invention is in no way limited by these Examples. In addition, hereinafter “parts” and “%” shall in each case mean “parts by weight” and “% by weight,” unless otherwise indicated.
Plastic spherical hollow microparticles (copolymer 36 parts
resin whose main component is styrene-acrylic
acid; product name: Ropaque HP-91
produced by Rohm and Haas Company;
solid content = 27.5%; average particle
diameter = 1 μm, hollow ratio = 50%):
Styrene-butadiene copolymer latex (product name: 10 parts
SMARTEX PA-9159 produced by NIPPON A &
L Inc.; solid content = 47.5%):
2-anilino-3-methyl-6-(di-n-butyral amino) fluoran: 20 parts
10% aqueous solution of itaconic acid-modified polyvinyl 20 parts
4-hydroxy-4′-isopropoxy phenyl sulfone: 20 parts
10% aqueous solution of itaconic acid-modified 20 parts
Silica: 10 parts
10% aqueous solution of itaconic acid-modified 100 parts
Polyamide epichlorhydrine resin (product name: 30 parts
Aluminum hydroxide (average particle diameter: 20 parts
Liquid F: 75 parts
10% aqueous solution of diacetone-modified 100 parts
10% aqueous solution of adipic acid dihydrazide: 10 parts
Acrylic resin (Joncryl-74J, made by Johnson 20 parts
10% aqueous solution of diacetone-modified polyvinyl alcohol 100 parts
Acrylic resin (Joncryl-74J, made by Johnson Polymer): 10 parts
Ammonium salt of diisobutylene-maleic 20 parts
Ammonium salt of diisobutylene-maleic 10 parts
Acrylic cationic resin (Chemistat 7005, 5 parts
Above-described Liquid E: 75 parts
Ammonium salt of diisobutylene-maleic acid 10 parts
room-temperature-curable silicone resin 0.5 part
[Liquid L]: 50 parts
10% aqueous solution of polyvinyl alcohol: 100 parts
10% aqueous solution of polyamide 30 parts
The various heat-sensitive recording materials were printed each 1 msec with a pulse width of 0.2 msec to 1.2 msec under a head power of 0.45 W/dot, a recording time per line of 20 msec/L and a scanning density of 8×385 dots/mm, the printing density was measured using a Macbeth RD-914 densitometer, and the pulse width that produced a density of 1.0 was calculated.
Aqueous flexographic ink (MTQ 30302-404, made by AKZO Nobel) diluted to 25% was coated onto the various heat-sensitive recording materials using a wire bar that has a wire diameter of φ0.10, and was then dried for one hour in an atmosphere of 23° C. and 50% relative humidity. Following this, one drop of water was dropped onto the printed image and five minutes later was strongly rubbed one time using a finger, and the waterproofing property was evaluated based on how the printed image peeled off.
A: Absolutely no peeling in the printed part
B: Less than 25% peeling occurred in the printed part
C: 25% or more but less than 50% peeling occurred in the printed part
D: 50% or more peeling occurred in the printed part.
Color was developed by bringing a 150° C. hot stamp into contact with each of the heat-sensitive recording materials for one second, and then three vinyl chloride wraps were layered on the heat-sensitive color-developing layer surface side, a load of 5 kg/100 cm2 was applied under a dry atmosphere at 40° C. and after 15 hours storage, and the post-storage image density was measured using a Macbeth densitometer (model RD-914, made by Macbeth Corp.).
Color was developed by bringing a 150° C. hot stamp into contact with each of the heat-sensitive recording materials for one second, and then three vinyl chloride wraps were layered on the back surface side, a load of 5 kg/100 cm2 was applied under a dry atmosphere at 50° C. and after 15 hours storage, and the post-storage image density was measured using a Macbeth densitometer (model RD-914, made by Macbeth Corp.).
After the various heat-sensitive recording materials and a printer (SM-90, made by Teraoka Seiko Co.) were allowed to stand for one hour in a high-temperature, high-humidity environment at 40° C. and 90% relative humidity, printing was conducted and evaluation was made based on printing length. The printing length is the length from the printing start area to the printing last area when a specific printing pattern is printed using the printer. When the transferability is excellent, the printing patter is correctly printed and the printing length of the printing pattern and the printing length of the sample actually printed match, whereas when the transferability is poor, transferability problems arise due to the heat-sensitive recording material and thermal head sticking to each other, so the printing area is shortened when printed, and moreover meandering occurs when the heat-sensitive recording material is transferred, so that the printing length of the sample actually printed is shorter than the printing length of the printing pattern. In the present test, a printing pattern with a printing length of 100 mm was used.
flexographic Resistance plasticizer
Sensitivity ink water to of back Dot
ratio separation plasticizer surface Transferability reproducibility
Ex. 1 1.00 C 1.23 1.20 90 mm B
Ex. 2 1.00 B 1.23 1.21 90 mm B
Ex. 3 1.01 B 1.23 1.20 98 mm B
Ex. 4 1.01 A 1.22 1.20 95 mm B
Ex. 5 1.00 A 1.24 1.21 95 mm B
Ex. 6 0.99 A 1.23 1.20 100 mm  B
Ex. 7 1.00 B 1.23 1.20 98 mm B
Ex. 8 1.12 A 1.26 1.20 90 mm A
Ex. 9 1.00 A 1.22 1.25 90 mm B
Comp. Ex. 1 1.00 D 1.23 1.20 98 mm B
Comp. Ex. 2 1.00 C 1.21 1.21 50 mm B
Comp. Ex. 3 1.00 C 1.10 1.20 95 mm B
12. The heat-sensitive recording material according to claim 1, wherein the first protective layer contains a water-soluble salt of an ethylene/acrylic acid copolymer.
US12050535 2007-03-19 2008-03-18 Heat-sensitive recording material Active 2030-04-18 US8058209B2 (en)
JP2007-071256 2007-03-19
JP2007071256 2007-03-19
US13248519 US8193116B2 (en) 2007-03-19 2011-09-29 Heat-sensitive recording material
US13248519 Continuation US8193116B2 (en) 2007-03-19 2011-09-29 Heat-sensitive recording material
US20080234128A1 true US20080234128A1 (en) 2008-09-25
US8058209B2 true US8058209B2 (en) 2011-11-15
ID=39432592
US12050535 Active 2030-04-18 US8058209B2 (en) 2007-03-19 2008-03-18 Heat-sensitive recording material
US13248519 Active US8193116B2 (en) 2007-03-19 2011-09-29 Heat-sensitive recording material
US (2) US8058209B2 (en)
EP (1) EP1972459B1 (en)
JP (1) JP5186962B2 (en)
CN (1) CN101269593B (en)
DE (1) DE602008000249D1 (en)
US8629082B2 (en) 2009-10-14 2014-01-14 Oji Holdings Corporation Heat-sensitive recording material
JP5471208B2 (en) * 2008-09-10 2014-04-16 株式会社リコー Heat-sensitive recording material
JP5600969B2 (en) * 2009-03-18 2014-10-08 株式会社リコー Manufacturing apparatus manufacturing method and heat-sensitive recording material of the heat-sensitive recording material
JP4979149B2 (en) * 2009-03-24 2012-07-18 日本製紙株式会社 The heat-sensitive recording material
JP2010228364A (en) * 2009-03-27 2010-10-14 Mitsubishi Paper Mills Ltd Thermal recording material
JP5333109B2 (en) * 2009-09-16 2013-11-06 王子ホールディングス株式会社 Heat-sensitive recording material
JP2012236317A (en) * 2011-05-11 2012-12-06 Osaka Sealing Printing Co Ltd Heat-sensitive recording medium and method for manufacturing heat-sensitive recording medium
JP2012236313A (en) * 2011-05-11 2012-12-06 Osaka Sealing Printing Co Ltd Heat-sensitive recording medium
JP5975455B2 (en) * 2011-05-11 2016-08-23 大阪シーリング印刷株式会社 Method for producing a thermosensitive recording material
JP2012236319A (en) * 2011-05-11 2012-12-06 Osaka Sealing Printing Co Ltd Method for manufacturing heat-sensitive recording medium
JP5665190B2 (en) * 2011-05-11 2015-02-04 大阪シーリング印刷株式会社 Method for producing a heat-sensitive recording material and heat sensitive recording material
JP5911086B2 (en) * 2011-05-11 2016-04-27 大阪シーリング印刷株式会社 Method for producing a thermosensitive recording material
JP5975456B2 (en) * 2011-05-11 2016-08-23 大阪シーリング印刷株式会社 Method for producing a thermosensitive recording material
JP2014195995A (en) * 2013-03-07 2014-10-16 株式会社リコー Thermosensitive recording material
CN104788900A (en) * 2015-03-31 2015-07-22 苏州市鼎立包装有限公司 Electrical insulating packaging material and preparation method thereof
CN104985943B (en) * 2015-08-13 2017-02-08 新乡市瑞丰新材料股份有限公司 An internal film transfer coater specific color-developing agent and preparation method
JPS55164192A (en) 1979-06-11 1980-12-20 Ricoh Co Ltd Heat sensitive recording material
JPS595093A (en) 1982-07-01 1984-01-11 Ricoh Co Ltd Heat-sensitive recording material
US4467339A (en) 1981-06-11 1984-08-21 Ricoh Company, Ltd. Thermosensitive recording material
JPS59225987A (en) 1983-06-06 1984-12-19 Ricoh Co Ltd Thermal recording material
JPS6015190A (en) 1983-07-07 1985-01-25 Ricoh Co Ltd Thermographic material
US4506278A (en) 1983-03-10 1985-03-19 Ricoh Company, Ltd. Thermosensitive recording material
US4616240A (en) 1982-05-28 1986-10-07 Ricoh Company, Ltd. Thermosensitive recording sheet
JPS63281886A (en) 1987-05-15 1988-11-18 Fuji Photo Film Co Ltd Thermal recording paper
JPH02214688A (en) 1989-02-14 1990-08-27 Ricoh Co Ltd Heat sensitive recording material
US5200385A (en) 1988-12-20 1993-04-06 Ricoh Company, Ltd. Thermosensitive recording material
JPH08151412A (en) 1994-11-28 1996-06-11 Unitika Chem Kk Method for water-proofing polyvinyl alcohol resin
JP2678358B2 (en) 1987-10-02 1997-11-17 株式会社リコー Heat-sensitive recording material
JPH1087936A (en) 1996-09-18 1998-04-07 Unitika Chem Kk Polyvinyl alcohol-based resin composition, and paper coating agent consisting essentially of the same
JP2002211131A (en) 2001-01-17 2002-07-31 Fuji Photo Film Co Ltd Thermal recording medium
EP1243439A1 (en) * 2001-03-23 2002-09-25 Ricoh Company, Ltd. Thermosensitive recording material and method of production thereof
JP2003182229A (en) 2001-12-20 2003-07-03 Fuji Photo Film Co Ltd Thermal recording material
US6784136B2 (en) * 2000-11-24 2004-08-31 Oji Paper Co., Ltd. Heat-sensitive recording material
JP2005313597A (en) 2004-03-30 2005-11-10 Nippon Paper Industries Co Ltd Method for manufacturing thermal recording medium
EP1637339A1 (en) * 2004-09-21 2006-03-22 Ricoh Company Ltd. Thermal recording material
JPH05162445A (en) * 1991-12-12 1993-06-29 Ricoh Co Ltd Thermal recording material
JPH07205547A (en) * 1994-01-10 1995-08-08 Mitsubishi Paper Mills Ltd Reversible thermal display material
JP4300665B2 (en) * 2000-01-14 2009-07-22 王子製紙株式会社 The heat-sensitive recording material
JP4719036B2 (en) * 2005-03-14 2011-07-06 株式会社リコー Heat-sensitive recording material
US20020155950A1 (en) 2000-12-04 2002-10-24 Fuji Photo Film Co., Ltd. Thermal recording material
JP2002283717A (en) 2001-03-23 2002-10-03 Ricoh Co Ltd Thermal recording material and manufacturing method therefor
Jun. 12, 2008 European search report in connection with corresponding European patent application No. 08 102 726.
DE602008000249D1 (en) 2009-12-17 grant
EP1972459B1 (en) 2009-11-04 grant
CN101269593B (en) 2011-10-26 grant
JP5186962B2 (en) 2013-04-24 grant
US20120021900A1 (en) 2012-01-26 application
CN101269593A (en) 2008-09-24 application
US20080234128A1 (en) 2008-09-25 application
EP1972459A1 (en) 2008-09-24 application
US8193116B2 (en) 2012-06-05 grant
JP2008260275A (en) 2008-10-30 application
EP0992363A1 (en) 2000-04-12 Heat-sensitive recording material
US8530379B2 (en) 2013-09-10 Thermosensitive recording material and production method thereof
US20120038737A1 (en) 2012-02-16 Thermosensitive recording medium
US20100062935A1 (en) 2010-03-11 Thermosensitive recording medium
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ORIHARA, MOTOI;INABA, NORIHIKO;REEL/FRAME:020673/0683;SIGNING DATES FROM 20080310 TO 20080312
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ORIHARA, MOTOI;INABA, NORIHIKO;SIGNING DATES FROM 20080310 TO 20080312;REEL/FRAME:020673/0683