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11. 发明专利

JPH05119513A DRY TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE 失效
公开(公告)号：JPH05119513A
公开(公告)日：1993-05-18
申请号：JP30552591
申请日：1991-10-25
申请人： FUJI XEROX CO LTD
发明人： EGUCHI ATSUHIKO , SUZUKI CHIAKI , AKIYAMA REIKO , AOKI TAKAYOSHI
IPC分类号： G03G9/097 , G03G9/08
摘要： PURPOSE:To ensure narrow distribution of an electrostatically charged state, high electrostatic chargeability, satisfactory electrostatic charge retentivity and satisfactory electric charge exchangeability by fixing an electrostatic charge controlling agent on the surface of a toner contg. a uniformly dispersed electrostatic charge controlling resin. CONSTITUTION:An electrostatic charge controlling resin is incorporated into a dry toner for developing an electrostatic charge image contg. at least a binding resin and a colorant as essential components and an electrostatic charge controlling agent is added to the toner. Since the electrostatic charge controlling resin is incorporated into the toner, the dispersibility of the resin in the toner particles is improved and uneven existence of the inner electrostatic charge controlling component among the toner particles and the concentration of the component in the surface layers of the toner particles can be prevented. Since the electrostatic charge controlling agent is added to the toner, uneven existence of the electrostatic charge controlling component in the surface layers of the toner particles can be suppressed. Since the added controlling agent is not electrostatically stuck but is fixed on the surfaces of the toner particles by mechanical force with a Henschel mixer, etc., the impaction of the controlling agent on a carrier and a photosensitive body is eliminated.

12. 发明专利

JPH03296066A ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER 失效
公开(公告)号：JPH03296066A
公开(公告)日：1991-12-26
申请号：JP9768390
申请日：1990-04-16
申请人： FUJI XEROX CO LTD
发明人： AKIYAMA REIKO , ISHIDA HARUHIDE , ICHIMURA MASANORI , TAKE MICHIO , IIDA YOSHIHIKO
IPC分类号： G03G9/087
摘要： PURPOSE:To improve vinyl resin offset resistance by using a vinyl resin contg. a hydroxyl group-contg. vinyl monomer modified by epsilon'-caprolactone as a monomer component as a binder resin. CONSTITUTION:The vinyl resin contg. the hydroxyl group-contg. vinyl monomer modified by the epsilon'-caprolactone as the monomer component is used as the binder resin. The vinyl monomer having the hydroxyl group is exemplified by acrylates or methacrylates, such as 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate and 2-hydroxypropyl methacrylate, and styrene monomers, such as 4-(1- hydroxy-1-methyl butyl)styrene, 4-(1-hydroxy-1-methyl hexyl)styrene. The vinyl resin offset resistance is improved in this way.

13. 发明专利

JPH10114437A PAPER FEEDER 失效
公开(公告)号：JPH10114437A
公开(公告)日：1998-05-06
申请号：JP27032296
申请日：1996-10-11
申请人： FUJI XEROX CO LTD
发明人： MITAMURA YOSHIHIKO , SHINOZAKI KENGO , AKIYAMA REIKO
IPC分类号： G03G15/00 , B65H3/44 , B65H3/46 , B65H3/68
摘要： PROBLEM TO BE SOLVED: To remove a jammed paper sheet easily without pulling out a paper feed tray by releasing connection between a rotational wall and a rotational wall supporting member based on a connecting member when a rotating handle arranged on the outside face of the rotational wall is pulled outward and rotating the rotational wall toward the opening position. SOLUTION: In the case of jam of a paper sheet over a paper upper conveying path in paper feed trays T1-T4 on plural levels, a rotational wall 66 is turned to the opening position on the outside when a rotating handle 74 is pulled outward. In this process, a rotational wall 66 side paper upper guide 67 arranged on the inside wall face of the rotational wall 66 is released from a case side paper upper guide 48a, so that a paper upper conveying path is opened. A conveying driven roll 78 held on the rotational wall 66 inside face is released from a conveying driving roll 30, so that the clasped jammed paper is released freely. Therefore, the jammed paper can be removed without pulling out the paper feed trays T1-T4, if all the rotational walls 66 holding the conveying driven roll 78 are opened.

14. 发明专利

JPH05119512A DRY TONER AND PRODUCTION THEREOF 失效
公开(公告)号：JPH05119512A
公开(公告)日：1993-05-18
申请号：JP30552691
申请日：1991-10-25
申请人： FUJI XEROX CO LTD
发明人： SUZUKI CHIAKI , AKIYAMA REIKO , EGUCHI ATSUHIKO , AOKI TAKAYOSHI
IPC分类号： G03G9/08
摘要： PURPOSE:To obtain a dry toner excellent in releasability from a heating roll, flowability as powder and uniformity of electrostatic charge. CONSTITUTION:Low mol. wt. polypropylene is dispersed or dissolved in a solvent, an inorg. compd. is treated with the resulting dispersion or soln. and the treated inorg. compd. is added to a toner contg. at least a binding resin and a colorant as essential components to obtain a dry toner.

15. 发明专利

JPH0534973A POSITIVELY CHARGEABLE TONER FOR DEVELOPING ELECTROSTATIC CHARGE IMAGE 失效
公开(公告)号：JPH0534973A
公开(公告)日：1993-02-12
申请号：JP21318491
申请日：1991-07-31
申请人： FUJI XEROX CO LTD
发明人： EGUCHI ATSUHIKO , SUZUKI CHIAKI , AKIYAMA REIKO , NAGATSUKA IKUTARO , AOKI TAKAYOSHI , TORIGOE MASAYUKI
IPC分类号： G03G9/087 , G03G9/097
摘要： PURPOSE:To provide a positively chargeable dry toner having satisfactory fixability at low temp., satisfactory anti-offsetting property, narrow distribution of the amt. of electric charges, excellent secular stability of a charged state and high environmental stability. CONSTITUTION:This positively chargeable dry toner contains a binding resin having two mol.wt. peaks and a colorant as essential components and further contains a charge controlling resin with a grafted quat. ammonium salt. The stock component of the charge controlling resin is the same component as the principal chain component of the binding resin and relation represented by an inequality Mp (low)

16. 发明专利

JPH03296070A DEVELOPER FOR ELECTROSTATIC CHARGE IMAGE 失效
公开(公告)号：JPH03296070A
公开(公告)日：1991-12-26
申请号：JP9768490
申请日：1990-04-16
申请人： FUJI XEROX CO LTD
发明人： AKIYAMA REIKO , ICHIMURA MASANORI , IIDA YOSHIHIKO
IPC分类号： G03G9/087 , G03G9/08 , G03G9/113
摘要： PURPOSE:To improve cleaning performance, the life of the developer and the flowability of a toner by forming the toner, carrier and fine powder so as to satisfy respective prescribed conditions. CONSTITUTION:The carrier is formed by coating the surface of the core with an acrylic resin and the toner is formed by incorporating a coloring agent into a polyester resin having

17. 发明专利

JPH023078A ONE-COMPONENT DEVELOPING METHOD 失效
公开(公告)号：JPH023078A
公开(公告)日：1990-01-08
申请号：JP14994988
申请日：1988-06-20
申请人： FUJI XEROX CO LTD
发明人： YOSHIKAWA HIROAKI , ISHIDA HARUHIDE , INOUE TOYOFUMI , SHITAKA YASUTO , FUJII TETSUYA , TAKE MICHIO , AKIYAMA REIKO , TSUDA JUN
IPC分类号： G03G9/083 , G03G13/09 , G03G15/09
摘要： PURPOSE:To uniformly electrify toner even if contact-pressure of the toner with a toner carrier is uneven and to obtain an image without density irregularity by employing magnetic, whose surface is treated with titanite coupling agent, as magnetic powder added to the toner. CONSTITUTION:An electrostatic latent image holding body 1 is confronted with a toner carrier 5 carrying a toner layer pressed and formed by a layer regulating member 3 made of a soft elastic body 71 in a developing area so that they come into contact with each other or are away from each other at a fixed interval. In this condition, the electrostatic latent image is developed. A magnetic toner 4 formed by dispersion magnetic powder treated with the titanite coupling agent into binder resin is employed as the toner used here. Even if the toner is brought into uneven press-contact with the toner carrier, it can be uniformly electrified to obtain an excellent quality image free of density irregularity.

18. 发明专利

JP2000131875A IMAGE FORMING TONER, ITS PRODUCTION, METHOD AND DEVICE FOR FORMING RAISED IMAGE USING IT 失效
公开(公告)号：JP2000131875A
公开(公告)日：2000-05-12
申请号：JP30445898
申请日：1998-10-26
申请人： FUJI XEROX CO LTD
发明人： TAKAGI SEIICHI , AKIYAMA REIKO , SUZUKI ISAMU , NAITO NOBUYUKI , MURAYAMA YUICHI
IPC分类号： G03G9/08 , G03G9/087 , G03G9/097 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To provide a new image forming toner which can easily form a raised image when the toner is used for a general copying machine or printer, which can form an image having sufficiently raised image height for finger reading, and which can form an image having practically sufficient fixing property and imaging property. SOLUTION: In the image forming toner containing at least a binder resin and foaming agent, the foaming agent is substantially unexposed on the toner surface. Preferably, the foaming agent consists of microcapsule particles containing a low boiling point material. More preferably, the low boiling point material is isobutane, and the wall material of microcapsule particles is a copolymer of vinylidene chloride and acrylonitrile.

19. 发明专利

JPH05224451A COATING PARTICLE FOR SURFACE OF PHOTOSENSITIVE BODY AND PICTURE IMAGE FORMING METHOD 失效
公开(公告)号：JPH05224451A
公开(公告)日：1993-09-03
申请号：JP5920492
申请日：1992-02-14
申请人： FUJI XEROX CO LTD
发明人： EGUCHI ATSUHIKO , SUZUKI CHIAKI , AKIYAMA REIKO , AOKI TAKAYOSHI
IPC分类号： G03G5/147 , G03G21/00 , G03G21/10
摘要： PURPOSE:To provide coating particles for the surface of a photosensitive body or a cleaning member with which the toner remaining on the photosensitive body can be removed without damaging the surface of the photosensitive body and without causing filming of surfaces of the photosensitive body or an electrifying member in the cleaning process of electrophotographic system or the like. CONSTITUTION:The coating particles are almost spherical silica fine particles, and especially, spherical silica fine particles produced by deflagration method are preferable. These silica fine particles are used for the formation of picture images by electrophotographic method or the like. A powder containing the silica fine particles is supplied to the surface of a photosensitive body in the area not to be developed in such processes to develop electrostatic latent images on a carrier body for latent images, to transfer the formed toner images to a transferring member, and to remove the developmer component remaining on the electrostatic latent image carrier body. In the process to remove the developer component, the powder containing the silica fine particles is preferably deposited on at least one member of brush or blade.

20. 发明专利

JPH04282643A ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER 失效
公开(公告)号：JPH04282643A
公开(公告)日：1992-10-07
申请号：JP4673691
申请日：1991-03-12
申请人： FUJI XEROX CO LTD
发明人： TORIGOE SATORU , SUZUKI CHIAKI , AKIYAMA REIKO , NAGATSUKA IKUTARO , KIMURA RYUICHI
IPC分类号： G03G9/09
摘要： PURPOSE:To obtain the toner superior in electric chargeability and environmental stability and long in life and capable of ensuring a good image free from background stains by using a combination of a 2 different kinds of specified carbon blacks as a colorant. CONSTITUTION:This toner is the electrostatic charge image developing toner comprising at least a binder resin, such as polystyrene, styrene-acrylic acid alkylate copolymer, or polypropylene, and the colorant, such as 2 kinds of carbon blacks different in pH, carbon black A of pH >=8 and carbon black B of pH

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