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61. 发明专利

JPH0225388A SUBLIMATION-TYPE THERMAL TRANSFER RECORDING METHOD 失效
公开(公告)号：JPH0225388A
公开(公告)日：1990-01-26
申请号：JP17514788
申请日：1988-07-15
申请人： RICOH KK
发明人： SUZUKI AKIRA , MOCHIZUKI HIDEHIRO , SHIMADA MASARU , KAMIMURA HIROYUKI
IPC分类号： B41M5/382 , B41M5/26 , B41M5/40 , B41M5/50 , B41M5/52
摘要： PURPOSE:To reduce a lowering in the density of transferred images and enable multi-time printing by providing a dye-supplying layer and a layer contributive to transfer, on a base in that order from the base side, superposing an image- receiving sheet on the contributive layer, and transferring a dye from the contributive layer onto the image receiving sheet through sublimation under specified conditions. CONSTITUTION:A sublimation-type thermal transfer recording medium comprises a dye-supplying layer 4 comprising a sublimable dye dispersed in a resin binder and a layer 5 contributive to transfer, which layers are provided on a base 1 in that order from the base side. An image-receiving sheet 3 is superposed on the contributive layer 5, and thermal printing is conducted from the recording medium side by a thermal head 6 while the medium and the sheet 3 are fed under the condition of [velocity of sheet]/[velocity of medium]>1, whereby the dye contained in the layer 5 in the printed area is transferred onto the sheet 3 through sublimation. By this method, the sublimable dye is transferred by sublimation from the transfer-contributive layer 5 onto the image-receiving sheet 3 through a free surface, and simultaneously, the layer 5 is supplied with the dye from the dye-supplying layer being a lower layer by diffusion.

62. 发明专利

JPH01190770A WATER-BASE INK COMPOSITION 失效
公开(公告)号：JPH01190770A
公开(公告)日：1989-07-31
申请号：JP1531888
申请日：1988-01-26
申请人： RICOH KK
发明人： SHIMADA MASARU
IPC分类号： C09D11/00
摘要： PURPOSE:To obtain the title ink composition excellent in ejectability, free of a problem of plugging and giving an image improved in sharpness, water resistance, light resistance, life, etc., by using a specified water-soluble dye. CONSTITUTION:0.5-20wt.% at least one water-soluble dye of the formula (wherein M is H, Li, K, Na, quat. ammonium or an organic amine, l is 1-3, m is 3 when l=1, 2 when l=2, and 1 when l=3, and n is 0-6) is dissolved in a mixed solvent comprising 5-80wt.% water-soluble organic solvent (e.g., ethylene glycol) and water; an antiseptic/antifungal (e.g., sodium dehydroacetate), a chelating agent (e.g., sodium ethylenediaminetetraacetate), a rust preventive (e.g., ammonium thioglycolate), pH controller, etc., are optionally added to the obtained solution; and the pH is adjusted to 9.0-11.0.

63. 发明专利

JPH01123879A WATER-BASED INK COMPOSITION 失效
公开(公告)号：JPH01123879A
公开(公告)日：1989-05-16
申请号：JP28385387
申请日：1987-11-09
申请人： RICOH KK
发明人： SHIMADA MASARU , MURAKAMI KAKUJI , KAMIMURA HIROYUKI , NAGAI KIYOFUMI
IPC分类号： C09D11/02 , C09D11/03 , C09D11/328
摘要： PURPOSE:To provide a black water-based ink compsn. suitable especially for ink jet recording and excellent in ejection characteristics without causing clogging, image sharpness, water resistance, light resistance, etc., by using a water- soluble dye having a specific structure. CONSTITUTION:This water ink compsn. contains at least one water-soluble dye of formula I, wherein R1 is hydrogen, alkyl, alkoxy, hydroxyalkyl, halogen, carboxyl or its salt, sulfonic or its salt, carbamoyl, sulfamoyl, or a group of formula II or III, wherein R2 is hydroxyl, amino, methyl, or hydrogen; R3 is hydroxyl, amino, or substd. amino; R4 is hydrogen, methyl, methoxy, chlorine, or sulfonic or its salt; R5 is hydroxyl or amino; n is 0, 1, or 2; and M is hydrogen, lithium, potassium, sodium, quaternary ammonium, or org. amine.

64. 发明专利

JPH01118582A WATER-BASED INK COMPOSITION 失效
公开(公告)号：JPH01118582A
公开(公告)日：1989-05-11
申请号：JP27759487
申请日：1987-11-02
申请人： RICOH KK
发明人： SHIMADA MASARU , MURAKAMI KAKUJI , KAMIMURA HIROYUKI , NAGAI KIYOFUMI
IPC分类号： C09D11/00 , C09D11/328
摘要： PURPOSE:To provide the above compsn. free of clogging and excellent in ejectability, image sharpness, water resistance, light resistance and shelf stability, by using a specific water-soluble dye having a high molecular extinction coefficient and an excellent solubility in a wetting agent. CONSTITUTION:0.5-20wt.% water-soluble dye of the formula (wherein R1-2 is H, acyl, sulfonyl, or a substd. 1,3,5-triazine; and M is H, Li, K, Na, quaternary ammonium, or an org. amine) having a high molecular extinction coefficient and an excellent solubility in a wetting agent is blended with 5-80wt.% water- soluble org. solvent as a wetting agent such as diethylene glycol or polyethylene glycol, a preservative mildew-proofing agent (e.g., sodium dehydroacetate), a pH modifier (e.g., diethanolamine), a chelating reagent (e.g., sodium ethylenediaminetetraacetate), a rust-proofing agent (e.g., sodium thiosulfate), etc. according to need.

65. 发明专利

JPS63291967A INK COMPOSITION 失效
公开(公告)号：JPS63291967A
公开(公告)日：1988-11-29
申请号：JP12595387
申请日：1987-05-25
申请人： RICOH KK
发明人： ARIGA TAMOTSU , SHIMADA MASARU , MURAKAMI KAKUJI , NAGAI KIYOFUMI , KAMIMURA HIROYUKI
IPC分类号： C09D11/00 , C09D11/328
摘要： PURPOSE:To provide an ink composition outstanding in delivery characteristics, free from cloggings, capable of giving printed images which are excellent in clearness and water and light resistances, suitable for ink jet recording use, containing specific water-soluble dye(s). CONSTITUTION:The objective composition containing at least one kind of water- soluble dye of formula I [X is of formula II, III, IV (M' is carboxyl or its salt; A is halogen), etc.; Y is H, of formula V, VI, VII (R is H or alkyl; Z is halogen or H), or -COCH3]. To prepare the dye of the formula I, one of available processes is as follows: (1) a coupler of formula VIII prepared by reaction between H-acid and p-toluenesulfonyl chloride and (2) sodium carbonate are dissolved in water to form a solution; 4,4'-bis-(2-chloranilino) methane and hydrochloric acid are dissolved in water followed by addition of an aqueous solution of sodium nitrite to the resulting solution to form a second solution. Thence, the latter solution is added to the above-mentioned coupler solution.

66. 发明专利

JPS63117078A WATER-BASED INK 失效
公开(公告)号：JPS63117078A
公开(公告)日：1988-05-21
申请号：JP26200286
申请日：1986-11-05
申请人： RICOH KK
发明人： NAGAI KIYOFUMI , MURAKAMI KAKUJI , SHIMADA MASARU , ARIGA TAMOTSU , KAMIMURA HIROYUKI
IPC分类号： C09D11/00 , C09D11/02
摘要： PURPOSE:To form a water-based ink which gives a recorded image with excellent water resistance and light resistance and also has a good black color tone, by mixing two kinds of specified dyes. CONSTITUTION:This water-based ink contains at least two kinds of dyes, i.e., a dye (A) of formula I and a dye (B) of formula II. In formula I, R1 and R2 are each H, alkyl, alkoxy, hydroxyalkyl, halogen, carboxyl, nitrile, sulfo, carbamoyl, sulfamoyl, acetyl or acetylamino; R3 is H, alkyl or halogen; R4 is H, alkyl, alkoxy, halogen or sulfo; R5 is amino or hydroxyl; X is H, an alkali metal, quaternary ammonium, quaternary phosphonium or a cation of an organic amine; l and m are each 1 or 2. In formula III, R6 and R7 are each H, carboxyl, sulfo, alkyl or alkoxy, X is the same as in formula I. The ratio of A to B is preferably 20/1-2/1.

67. 发明专利

JPS6356575A WATER-BASED INK COMPOSITION 失效
公开(公告)号：JPS6356575A
公开(公告)日：1988-03-11
申请号：JP19905486
申请日：1986-08-27
申请人： RICOH KK
发明人： SHIMADA MASARU , TSUTSUI KYOJI
IPC分类号： C09B35/378 , C09D11/00 , C09D11/02 , C09D11/03 , C09D11/328
摘要： PURPOSE:To obtain a water-based ink, containing a specific water-soluble dye, capable of giving clear images having excellent light and water resistance without precipitating during preservation and clogging nozzles and useful for ink jet recording, printing, writing utensils, recorders, etc. CONSTITUTION:A composition containing at least one water-soluble dye expressed by formula I [R1 is OH or (substituted) amino; R2 is H, OH or (substituted) amino; M is H, alkali metal, quaternary ammonium or basic amine; Ar is (substituted) aryl; m is 0 or 1; n is 1 or 2]. The content of the dye is preferably 1.5-6.0pts.wt. based on 100pts.wt. ink.

68. 发明专利

JPS6356574A WATER-BASED INK COMPOSITION 失效
公开(公告)号：JPS6356574A
公开(公告)日：1988-03-11
申请号：JP19905386
申请日：1986-08-27
申请人： RICOH KK
发明人： SHIMADA MASARU , HASHIMOTO MITSURU
IPC分类号： C09B35/039 , C09D11/00 , C09D11/02 , C09D11/03 , C09D11/328
摘要： PURPOSE:To obtain a water-based ink, containing a specific water-soluble dye, capable of giving clear images having excellent light and water resistance without precipitating during preservation and clogging nozzles and useful for ink jet recording, printing, writing utensils, recorders, etc. CONSTITUTION:A composition containing at least one water-soluble dye expressed by formula I [R1 is OH or (substituted) amino; R2 is H, OH or (substituted) amino; M is H, alkali metal, quaternary ammonium or basic amine; Ar is (substituted) aryl; m is 0 or 1; n is 1 or 2]. The content of the dye is preferably 1.5-6.0pts.wt. based on 100pts.wt. ink.

69. 发明专利

JPS6337176A INK COMPOSITION 失效
公开(公告)号：JPS6337176A
公开(公告)日：1988-02-17
申请号：JP18000686
申请日：1986-08-01
申请人： RICOH KK
发明人： ARIGA TAMOTSU , SHIMADA MASARU , MURAKAMI KAKUJI , KAMIMURA HIROYUKI , NAGAI KIYOFUMI
IPC分类号： C09B67/42 , C09D11/00 , C09D11/02 , C09D11/16
摘要： PURPOSE:To obtain an ink composition for ink jetting, writing tools, recorders, etc., having improved jetting stability of ink, rapid drying of ink in simultaneous printing, having no ooze of dots and improved water resistance of picture images, containing specific dye. CONSTITUTION:The aimed ink composition containing dye shown by the formula (CuPc is copper phthalocyanine; R1 and R2 are H, lower alkyl or hydroxyalkyl; M is H , alkali metal cation, ammonium ion or organic ammonium ion; m and n are 0-4; m+n=4). The amount of the dye added is 2-3wt%.

70. 发明专利

JPS6337174A AQUEOUS INK COMPOSITION 失效
公开(公告)号：JPS6337174A
公开(公告)日：1988-02-17
申请号：JP18000486
申请日：1986-08-01
申请人： RICOH KK
发明人： KAMIMURA HIROYUKI , SASAKI MASAOMI , SHIMADA MASARU
IPC分类号： C09B35/039 , C09D11/00 , C09D11/02 , C09D11/03 , C09D11/328
摘要： PURPOSE:To obtain the titled composition suitable for printing, writing tools, recorders, stamps, etc., causing neither precipitation in preservation nor nozzle clogging, providing picture images with improved light resistance and water resistance, containing specific water-soluble dye. CONSTITUTION:The aimed ink composition containing at least one water-soluble dye shown by the formula [R1 is OH or (substituted)amino; R2 is H, OH or (substituted)amino; M is N, alkali metal, quaternary ammonium or basic amine; Ar is (substituted)aryl; m is 0 or 1; n is 1 or 2]. The amount of the dye added is preferably 1.5-6.0pts.wt. based on 100pts.wt. ink.

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