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91. 发明专利

JP2003260872A REVERSIBLE HEAT-SENSITIVE RECORDING MEDIUM AND ERASING DEVICE 审中-公开
公开(公告)号：JP2003260872A
公开(公告)日：2003-09-16
申请号：JP2002062462
申请日：2002-03-07
申请人： RICOH KK
发明人： SHIBUYA TAKESHI , TORII MASASHI , FURUYA HIROMI , TSUTSUI KYOJI
IPC分类号： B41J2/32 , B41M5/26 , B41M5/337 , G06K19/07
摘要： PROBLEM TO BE SOLVED: To provide a reversible heat-sensitive recording medium which shows outstanding rapid erasability and heat-resistant keeping quality, and an erasing method therefor. SOLUTION: The reversible heat-sensitive recording medium has a reversible heat-sensitive recording layer containing an electron-donative coloring compound and an electron-reception compound formed on a support and a reversible heat- sensitive composition which can form a state where a color is relatively developed due to at least a difference in a heating temperature or a cooling rate after heating. In this medium, the reversible heat-sensitive recording layer uses a chemical compound represented by formula (1) (R is a hydrocarbon group with eight or more carbon atoms which can have a substituent group and n is an integer of 1 to 12) as a color developing/discharging control agent. COPYRIGHT: (C)2003,JPO

92. 发明专利

JP2003231355A REVERSIBLE THERMAL RECORDING MEDIUM 审中-公开
公开(公告)号：JP2003231355A
公开(公告)日：2003-08-19
申请号：JP2002031237
申请日：2002-02-07
申请人： RICOH KK
发明人： FURUYA HIROMI , SHIBUYA TAKESHI , TSUTSUI KYOJI
IPC分类号： B41M5/28 , B41M5/26 , B41M5/30 , B41M5/333 , B41M5/337 , B41M5/42
摘要： PROBLEM TO BE SOLVED: To provide a reversible thermal recording medium which uses paper as a support, has at least a recording layer using the coloring reaction between an electron donating coloring compound and an electron accepting compound and a substrate, and is free from color nonuniformity on the back and residual elimination during printing/elimination. SOLUTION: The reversible thermal recording medium comprises at least the recording layer using the coloring reaction between the electron donating coloring compound and the electron accepting compound and the support. The paper support provided with coated paper 45 g/m 2 or below in water absorbency by a water absorbency testing method (cup method) for paper of JIS P 8140 and cardboard or an under layer is used as the support. COPYRIGHT: (C)2003,JPO

93. 发明专利

JP2003094838A METHOD FOR FORMING TWO-COLOR IMAGE, REVERSIBLE TWO-COLOR HEAT-SENSITIVE RECORDING MEDIUM, AND DELETING METHOD FOR TWO-COLOR IMAGE 审中-公开
公开(公告)号：JP2003094838A
公开(公告)日：2003-04-03
申请号：JP2002263294
申请日：2002-09-09
申请人： RICOH KK
发明人： TSUTSUI KYOJI , YAMAGUCHI TAKEHITO
IPC分类号： B41M5/34 , B41M5/26 , B41M5/30 , B41M5/323 , B41M5/337
摘要： PROBLEM TO BE SOLVED: To provide a simple type reversible two-color heat-sensitive recording medium for which the reaction between a coloring agent and a color developer is utilized, which can easily perform a colored recording and a record deletion by heating only, and in addition, can stably keep the colored recording state and the record deleted state even at a normal temperature, and can easily form a two-color image by one application of heat; and to provide a heat-sensitive recording method using the recording medium. SOLUTION: For this reversible two-color heat-sensitive recording medium, two kinds of reversible thermal coloring compositions are separately and independently made to exist on a supporting body. In this case, for the two kinds of reversible thermal coloring compositions, coloring tones are different, and also, coloring state maintaining minimum cooling speeds required to obtain colored bodies are different. All the reversible thermal coloring compositions existing on the recording medium are heated and placed under a molten state, and then, rapidly cooled. Thus, a mixed color image wherein all the reversible thermally coloring compositions have been colored is formed for a first recording condition. In the meantime, the reversible thermally coloring compositions are cooled by a cooling speed by which only one of the reversible thermal coloring compositions can be colored, and thus, a single color image is formed for a second recording condition. For this forming method of a two-color image, both recording conditions are selectively used.

94. 发明专利

JP2003094822A REVERSIBLE HEAT-SENSITIVE RECORDING MEDIUM 审中-公开
公开(公告)号：JP2003094822A
公开(公告)日：2003-04-03
申请号：JP2001290347
申请日：2001-09-25
申请人： RICOH KK
发明人： SHIBUYA TAKESHI , TORII MASASHI , FURUYA HIROMI , TSUTSUI KYOJI
IPC分类号： B42D15/10 , B41M5/26 , B41M5/28 , B41M5/30 , B41M5/337 , G06K19/06 , G06K19/07 , G06K19/077
摘要： PROBLEM TO BE SOLVED: To provide a reversible heat-sensitive recording medium which is excellent in deleting property at a high speed. SOLUTION: This reversible heat sensitive recording medium has a reversible heat-sensitive recording layer containing a reversible heat-sensitive composition, which can form a relatively colored state due to a difference in the heating temperature and/or the cooling speed after heating by using an electron donative color-developing compound and an electron acceptive compound on a supporting body. In such a reversible heat-sensitive recording medium, a compound represented by a formula (1) is used as a decoloring controlling agent in the reversible heat-sensitive recording layer. (In the formula (1), R1 represents a 1-22C bivalent hydrocarbon radical which may have a substituent group. R2 to R5 each represent 8-22C hydrocarbon radicals which may have a substituent group. X and Y each represent a trivalent bonding group containing a hetero atom).

95. 发明专利

JP2003094821A REVERSIBLE HEAT-SENSITIVE COLORING COMPOSITION, AND REVERSIBLE RECORDING MEDIUM USING THE SAME 审中-公开
公开(公告)号：JP2003094821A
公开(公告)日：2003-04-03
申请号：JP2001290337
申请日：2001-09-25
申请人： RICOH KK
发明人： TORII MASASHI , SHIBUYA TAKESHI , FURUYA HIROMI , TSUTSUI KYOJI
IPC分类号： B42D15/10 , B41M5/26 , B41M5/28 , B41M5/30 , B41M5/337 , B41M5/42 , G06K19/06 , G06K19/07
摘要： PROBLEM TO BE SOLVED: To provide a reversible heat-sensitive coloring composition which keeps stable coloring property and decoloring property, is excellent in thermal response, and can cope with a high speed deletion; and to provide a reversible heat-sensitive recording medium. SOLUTION: This reversible heat-sensitive coloring composition can form a relatively colored state and a decolored state due to a difference in the heating temperature and/or the cooling speed after heating by using an electron donative color-developing compound, and an electron acceptive compound. In such a reversible heat-sensitive coloring composition, a compound which is represented by a general formula (1) is contained as a decoloring accelerator.

96. 发明专利

JP2001341429A INITIALIZING METHOD OF REVERSIBLE HEAT SENSITIVE RECORDING MEDIUM, REWRITING METHOD AND REWRITING AND INITIALIZING DEVICE. 失效
公开(公告)号：JP2001341429A
公开(公告)日：2001-12-11
申请号：JP2000311368
申请日：2000-10-12
申请人： RICOH KK
发明人： FURUYA HIROMI , TATEWAKI TADAFUMI , TSUTSUI KYOJI
IPC分类号： B41J2/32 , B41M5/26 , B41M5/28 , B41M5/30 , B41M5/337
摘要： PROBLEM TO BE SOLVED: To provide an initializing method and a rewriting method, by which a favorable recorded image having no afterimage (which emerges as ununiform coloring) is obtained at the rewriting of the image of a reversible heat sensitive recording medium and its device. SOLUTION: This initializing method is that of the reversible heat sensitive recording medium, which develops color or decolorizes due to the change of a heating temperature or of a cooling speed after heating. In this method, an operation for uniformalizing a recording layer by heating the whole surface or the recording region of the reversible heat sensitive recording medium with a thermal head up to its coloring temperature for developing color in the medium is executed.

97. 发明专利

JP2001277728A REWRITABLE RECORDING MEDIUM 失效
公开(公告)号：JP2001277728A
公开(公告)日：2001-10-10
申请号：JP2000099944
申请日：2000-03-31
申请人： RICOH KK
发明人： FURUYA HIROMI , TSUTSUI KYOJI , TATEWAKI TADAFUMI
IPC分类号： B42D11/00 , B41J2/32 , B41J3/407 , B41M5/00 , B41M5/26 , B41M5/28 , B41M5/30 , B41M5/337 , B41M5/36
摘要： PROBLEM TO BE SOLVED: To provide a treatable rewritable recording medium for document and a sure and easy recording method, wherein in order to develop sufficiently a function as a rewritable recording medium of information at a commodity level by securing safety at a high level with little damage of the medium in repetitive use when a reversible recording medium is used as a general document use, a difficulty becoming a trouble for setting a printing direction in the case of printing, by using both faces, the document ranging over a plurality of pages requested in using the rewritable recording medium using both faces as a general document use, is solved. SOLUTION: In the rewritable recording medium, document information wherein bending moment at 15 deg. by a tapered stiffness tester is >=4, and all angles of externals are >=120 deg. can be repetitively recorded by rewriting.

98. 发明专利

JP2001277727A REWRITABLE RECORDING MEDIUM FOR DOCUMENT 失效
公开(公告)号：JP2001277727A
公开(公告)日：2001-10-10
申请号：JP2000099885
申请日：2000-03-31
申请人： RICOH KK
发明人： FURUYA HIROMI , TSUTSUI KYOJI , SHIBUYA TAKESHI
IPC分类号： B42D11/00 , B41J2/32 , B41J3/407 , B41M5/00 , B41M5/26 , B41M5/28 , B41M5/30 , B41M5/337 , B41M5/36
摘要： PROBLEM TO BE SOLVED: To provide a treatable rewritable recording medium for document while a sure and easy recording method is provided by a method wherein treatableness requested in using a reversible recording medium as a general document use is added; the rewritable recording medium for document capable of sufficiently developing repetitive indication function of digital information is provided; and when the rewritable recording medium using both faces is used for a general document use, difficulty for setting a printing direction in the case of printing by using both faces of the document ranging over a plurality of pages becoming a trouble is solved. SOLUTION: In the reversible recording medium having a reversible recording layer for rewriting and indicating document information on a base material, the rewritable recording medium for document, wherein a treatable structure is provided for the reversible recording medium, is provided.

99. 发明专利

JP2001180115A DOCUMENT REWRITING TYPE RECORDING MEDIUM AND RECORDING METHOD THEREOF 失效
公开(公告)号：JP2001180115A
公开(公告)日：2001-07-03
申请号：JP36805099
申请日：1999-12-24
申请人： RICOH KK
发明人： FURUYA HIROMI , TSUTSUI KYOJI , TORII MASASHI
IPC分类号： B41M5/337 , B41M5/26 , B41M5/28 , B41M5/30
摘要： PROBLEM TO BE SOLVED: To provide a recording medium, readily visible even when images are recorded on both of front and rear surfaces and convenient for rewriting. SOLUTION: A total light beam transmission factor in a hazemeter on the recording part of the document rewriting type recording medium having reversible recording layers on both of the front and rear surfaces of the same is specified so as to be 2-8%.

100. 发明专利

JP2000347225A DISPLAY MEDIUM 失效
公开(公告)号：JP2000347225A
公开(公告)日：2000-12-15
申请号：JP15850899
申请日：1999-06-04
申请人： RICOH KK
发明人： KATO IKUO , KONDO HITOSHI , MORITA MITSUNOBU , TSUTSUI KYOJI , HAYAKAWA KUNIO
IPC分类号： G09F9/30 , G02F1/1343 , G02F1/155 , G02F1/167
摘要： PROBLEM TO BE SOLVED: To realize high-speed writing, to allow handy portability for a display medium, and to provide inexpensively a substitute for paper in which plural pictures can be seen side by side, by installing one side of electrical wiring for applying voltage or current to display places in a multi-layer wiring structure on a substrate. SOLUTION: A connector terminal 1 is one for a scanning electrode 2 making display places oppositely face each other. Connection wiring 10 is installed under an insulation film 4, connecting the connector terminal 1 to the scanning electrode 2 to form a multi-layer structure with the scanning electrode 2. A switching part 5 for the scanning electrode is connected to the connector terminal 1 of the scanning electrode 2. A signal electrode 9 is one part of the signal electrodes facing oppositely with the display places in-between, and is also the connector terminal of a signal conductor. A switching part 6 for the signal electrode is connected to the connector terminal of the signal electrode 9. With this structure, the connector terminal 1 is disposed only in a vertical direction, which can reduce the planar size of a display medium.

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