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31. 发明专利

GB2108120A CARBAZOLE COMPOUNDS AND THE PREPARATION THEREOF 未知
公开(公告)号：GB2108120A
公开(公告)日：1983-05-11
申请号：GB8228283
申请日：1982-10-04
申请人： RICOH KK , HODOGAYA CHEMICAL CO LTD
发明人： OKAZAKI HIDEO , IMAGOME HIROSHI , SUZUKA SUSUMU , SAKAI KIYOSHI
IPC分类号： C07D209/88 , C07D209/86 , C09B23/00

32. 发明专利

DE3236476A1 未知
公开(公告)号：DE3236476A1
公开(公告)日：1983-04-21
申请号：DE3236476
申请日：1982-10-01
申请人： HODOGAYA CHEMICAL CO LTD , RICOH KK
发明人： OKAZAKI HIDEO , IMAGOME HIROSHI , SUZUKA SUSUMU , SAKAI KIYOSHI
IPC分类号： C07D209/88 , C07D209/86 , C09B23/00 , D06L3/12 , G03G5/06

33. 发明专利

DE3220010A1 未知
公开(公告)号：DE3220010A1
公开(公告)日：1983-01-05
申请号：DE3220010
申请日：1982-05-27
申请人： RICOH KK
发明人： OHTA MASAFUMI , SAKAI KIYOSHI
IPC分类号： C09B26/02 , C09B35/378 , G03G5/06 , C09B33/24
摘要： An electrophotographic element comprising an electrically conductive substrate, a charge carrier generating layer and a charge transfer layer superimposed on said substrate, wherein said charge carrier generating layer contains a trisazo compound having the general formula (I): (I) (wherein, Ar1 represents a substituted or unsubstituted phenyl radical and said charge transfer layer contains a hydrazone compound having the general formula (II), (III), (IV), or (V): (II) (wherein, R1 represents a methyl group, an ethyl group, a 2-hydroxyethyl group or a 2-chloroethyl group, R2 represents a methyl group, an ethyl group, a benzyl group or a phenyl group, and R3 represents hydrogen, chlorine, an alkyl group having 1 to 4 carbon atoms, an alkoxyl group having 1 to 4 carbon atoms, a dialkylamino group or a nitro group.), (III) (wherein, Ar2 represents a naphthalene ring, an anthracene ring, a styryl group and their substituents, or a pyridine ring, a furan ring or a thiophene ring, and R4 represents an alkyl group or a benzyl group.), (IV) (wherein, R5, R6, R7 and R8 each represents hydrogen, an alkyl group having 1 to 3 carbon atoms, an alkoxyl group having 1 to 3 carbon atoms, a dialkyl group or a dibenzylamino group, and R9 represents an alkyl group or a benzyl group.), (V) (wherein, R10, R11, R12 and R13 each represents hydrogen, an alkyl group having 1 to 3 carbon atoms, an alkoxyl group having 1 to 3 carbon atoms, a substituted or non-substituted dialkylamino group, a dibenzylamino group or a halogen atom.), and a binder.

34. 发明专利

DE3107565A1 未知
公开(公告)号：DE3107565A1
公开(公告)日：1982-01-07
申请号：DE3107565
申请日：1981-02-27
申请人： RICOH KK
发明人： SAKAI KIYOSHI
IPC分类号： C07C251/86 , C07D209/86 , C07D213/53 , C07D307/52 , C07D333/22 , G03G5/06 , G06K15/14 , G11C11/42 , C07C109/16 , G11C13/08
摘要： The present invention provides a novel hydrazone compound expressed by the general formula I (wherein Ar represents substituted or non-substituted naphthyl group, anthryl group, styryl group, pyridyl group, thienyl group, furyl group or carbazolyl group.); the process for manufacturing thereof; and a multilayer type electrophotographic element comprising an electrically conductive substrate and a charge carrier generating layer and a charge transfer layer as successively superposed on said substrate, said charge transfer layer containing a hydrazone compound, as effective ingredient, expressed by the general formula II (wherien Ar' represents condensed polycyclic rings such as substituted or non-substituted naphthalene ring, anthracene ring and the like; heterocyclic rings such as substituted or non-substituted furan ring, thiophene ring, pyridine ring, carbazole ring and the like; or substituted or non-substituted styryl group.

35. 发明专利

DE3019395A1 未知
公开(公告)号：DE3019395A1
公开(公告)日：1980-11-27
申请号：DE3019395
申请日：1980-05-21
申请人： RICOH KK
发明人： SAKAI KIYOSHI , TSUTSUI KYOJI , NUMAZU SHIZUOKA , SASAKI MASAOMI
IPC分类号： C07D209/86 , G03G5/06

36. 发明专利

DE1796054B1 未知
公开(公告)号：DE1796054B1
公开(公告)日：1971-08-12
申请号：DE1796054
申请日：1968-08-23
申请人： RICOH KK
发明人： KUBO KAISHI , SAKAI KIYOSHI
IPC分类号： B05C17/06 , B41N1/24
摘要： 1,244,218. Heat sensitive stencil. RICOH K.K. 19 Aug., 1968 [25 Aug., 1967], No. 39498/68. Heading B5N. [Also in Division G2] A heat-sensitive stencil sheet comprising an ink-permeable base sheet laminated to a layer of post-chlorinated polyvinyl chloride. The sheet on image-wise exposure to heat meltperforates the chlorinated polyvinyl chloride layer to produce the stencil. The heat-sensitive layer may contain a stabilizer (e.g. plumbous phthalate), a plasticizer (e.g. 2,2 1 -diethylhexylphthalate), a filler (e.g. silica) and a dye (e.g. Lake Red C) and may be laminated to a paper made of fibres or a synthetic fibre support.

37. 发明专利

CA877873A HEAT-SENSITIVE STENCIL MASTER 未知
公开(公告)号：CA877873A
公开(公告)日：1971-08-10
申请号：CA877873D
申请人： RICOH KK
发明人： KUBO KEISHI , SAKAI KIYOSHI , ITOH KENZI

38. 发明专利

DE2021432A1 未知
公开(公告)号：DE2021432A1
公开(公告)日：1971-07-15
申请号：DE2021432
申请日：1970-04-30
申请人： RICOH KK
发明人： KUBO KEISHI , HAKAMADA KUNIAKI , SAKAI KIYOSHI , SATO TAKASHI
IPC分类号： B41M5/323 , B41M5/32 , B41N1/24 , B41M
摘要： 1319073 Semicarbazides; hydrazine dicarbanilide RICOH KK 27 May 1970 [9 Jan 1970] 25505/70 Heading C2C [Also in Division G2] 1 - Formyl - 4 - methylsemicarbazide is prepared by reacting methyl isocyanate and hydrazine hydrate to form 4-methyl semicarbazide which is then reacted with HCO 2 H in n-C 3 H 7 OH. The corresponding 4-phenyl compounds are prepared similarly using phenyl isocyanate. Hydrazine dicarbanilide is also prepared by reacting hydrazine hydrate and phenyl isocyanate.

39. 发明专利

DE1919384A1 未知
公开(公告)号：DE1919384A1
公开(公告)日：1969-10-23
申请号：DE1919384
申请日：1969-04-16
申请人： RICOH KK
发明人： SAITO TADASHI , SHIMADA MASARU , SAKAI KIYOSHI
IPC分类号： C07D295/096 , G03C1/58

40. 发明专利

DE1801286A1 未知
公开(公告)号：DE1801286A1
公开(公告)日：1969-10-16
申请号：DE1801286
申请日：1968-10-04
申请人： RICOH KK
发明人： KUBO KAISHI , SAKAI KIYOSHI
IPC分类号： B41M5/36 , B41M5/26

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