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21. 发明专利

JPH10268581A ELECTROPHOTOGRAPHIC LIQUID DEVELOPER 失效
公开(公告)号：JPH10268581A
公开(公告)日：1998-10-09
申请号：JP7200197
申请日：1997-03-25
申请人： MINOLTA CO LTD
发明人： MIYAMOTO HIDETOSHI , KOJIMA SEIJI , FUJIWARA TOSHIMITSU
IPC分类号： G03G9/12 , G03G9/13
摘要： PROBLEM TO BE SOLVED: To obtain an electrophotographic liquid developer excellent in stability with time with which a high system rate is obtd., by incorporating an oil-soluble ionic surfactant as a charge controlling agent and incorporating a specified polyester resin as a binder resin into color fine particles. SOLUTION: This electrophotographic liquid developer is produced by dispersing color fine particles in an electrically insulating liquid medium, into which an oil-soluble ionic surfactant is incorporated as a charge controlling agent. The color fine particles contain a polyester resin having the acid value between >=40 mgKOH/g and =40 mgKOH/g and

22. 发明专利

JPH10268580A ELECTROPHOTOGRAPHIC LIQUID DEVELOPER 失效
公开(公告)号：JPH10268580A
公开(公告)日：1998-10-09
申请号：JP7185197
申请日：1997-03-25
申请人： MINOLTA CO LTD
发明人： KOJIMA SEIJI , MIYAMOTO HIDETOSHI , FUJIWARA TOSHIMITSU
IPC分类号： G03G9/12 , G03G9/13
摘要： PROBLEM TO BE SOLVED: To obtain an electrophotographic liquid developer excellent in stability with time with which a high system rate is obtd., by incorporating an oil-soluble ionic surfactant as a charge controlling agent and incorporating a specified polyester resin as a binder resin into color fine particles. SOLUTION: This electrophotographic liquid developer is produced by dispersing color fine particles in an electrically insulating liquid medium, into which an oil-soluble ionic surfactant is incorporated as a charge controlling agent. The color fine particles contain a polyester resin as a binder resin having the glass transition temp. (Tg) between >=35 deg.C and =35 deg.C and

23. 发明专利

JPH08220813A ELECTROPHOTOGRAPHIC LIQUID DEVELOPER 失效
公开(公告)号：JPH08220813A
公开(公告)日：1996-08-30
申请号：JP2818895
申请日：1995-02-16
申请人： MINOLTA CO LTD
发明人： MIYAMOTO HIDETOSHI , FUJIWARA TOSHIMITSU , IINO SHUJI
IPC分类号： G03G9/12 , G03G9/13
摘要： PURPOSE: To provide an electrophotographic liquid developer which exhibits stable electrostatic chargeability and with which an always high image density is obtainable without being affected by an ambient environmental change and change with lapse of time by containing a specific amt. of moisture and a basic dispersion resin soluble in a carrier liquid and having an acidic group on toner particle surfaces. CONSTITUTION: The toner particles consisting of at least a binder resin and discoloring agent are dispersed into a high-resistance carrier. The moisture content in the liquid developer is 500 to 20000ppm and the developer contains the basic dispersion resin soluble in the carrier liquid and has the acidic group on the toner particle surfaces. The moisture of the content higher than the content at which the electrostatic charge of the toner particles in the liquid developer attains a satd. state in the presence of the basic dispersion resin is positively added into the liquid developer, by which the control of the toner electrostatic charge quantity by control of the acidity of the toner particle surfaces is made possible. The liquid developer which exhibit the electrostatic chargeability stable to a slight change in the moisture content in the liquid developer by a change in the ambient temp. and humidity environment and has the excellent stability with lapse of time at the time of long-term used is obtd.

24. 发明专利

JP2004226768A Rewritable image display medium 有权
公开(公告)号：JP2004226768A
公开(公告)日：2004-08-12
申请号：JP2003015479
申请日：2003-01-24
申请人： Minolta Co Ltd , ミノルタ株式会社
发明人： MIYAMOTO HIDETOSHI , AMARIGOME KISHO
IPC分类号： G02F1/17
摘要： PROBLEM TO BE SOLVED: To provide a particle moving type rewritable image display medium capable of displaying an image of high quality by suppressing adhesion of development particles to a substrate and the like to suppress generation of an afterimage at the time when an image is rewritten and reduction of the amount of movable development particles.
SOLUTION: In the particle moving type rewritable image display medium 11 provided with a pair of substrates 111 and 112, partition walls 113 between the substrates, developer holding cells 114 between the adjacent partition walls and a dry process developer DL held in the cells, developing particles WP and BP which are constituents of the developer DL are made to move to display the image by applying an electric field corresponding to the image to be formed to the developing particles. Fine particles mp for suppressing adhesion of the developing particles having particle sizes smaller than those of the developing particles are made to adhere to the inner surface of the substrate 111 and the side surfaces of the partition walls 113 which are facing the developing particles.
COPYRIGHT: (C)2004,JPO&NCIPI

25. 发明专利

JP2002169373A DEVELOPING DEVICE 失效
公开(公告)号：JP2002169373A
公开(公告)日：2002-06-14
申请号：JP2000369551
申请日：2000-12-05
申请人： MINOLTA CO LTD
发明人： MIYAMOTO HIDETOSHI , MACHIDA JUNJI
IPC分类号： G03G15/08 , F16C13/00
摘要： PROBLEM TO BE SOLVED: To suppress a variation of electric resistance in the surface layer of a toner carrier due to a change of environmental conditions and to achieve stable development even if environmental conditions change as well as to suppress the cracking of a toner when a regulating member is brought into press contact with the surface of the toner carrier with the surface layer comprising emulsion resin particles to regulate the amount of the toner carried to a developing region. SOLUTION: In a developing device in which a regulating member 13 is brought into press contact with the surface of a toner carrier 11 to regulate the amount of a toner carried to a developing region and the toner is fed from the toner carrier to the latent image part of an image carrier in the developing region to carry out development, a surface layer 11b comprising emulsion resin particles obtained by a soap-free polymerization method not using a dispersant is disposed on the surface of the toner carrier.

26. 发明专利

JP2001353938A CONTROL METHOD FOR IMAGING APPARATUS AND RECORDING MEDIUM 失效
公开(公告)号：JP2001353938A
公开(公告)日：2001-12-25
申请号：JP2000215197
申请日：2000-06-12
申请人： MINOLTA CO LTD
发明人： AMARIGOME KISHO , MIZUNO HIROSHI , MIYAMOTO HIDETOSHI , MATSUURA MASAHIKO , KURITA TAKAHARU
IPC分类号： B41J29/38 , B41J2/475 , B41J29/26 , G03G21/00 , G06F3/12 , G06F15/00 , G06K15/00 , G09G3/36 , H04N1/12 , H04N1/193
摘要： PROBLEM TO BE SOLVED: To provide a control method for an imaging apparatus for imaging operation easy to understand and facilitating the operation for the image-forming apparatus, and a recording medium in which a program for executing the control method for the image-forming apparatus is recorded. SOLUTION: According to this control method for the imaging apparatus PRT are provided a first imaging part for imaging to a normal image display medium PP and a second imaging part for imaging to a reversible image display medium TP, so that both imaging to the medium PP and imaging to the medium TP can be carried out. The method includes one, or two or more of transmitting state information of the imaging apparatus, setting state information of the imaging apparatus, user input state information, etc., to an image information input device PC which sends image data and selecting a process method for image data to be transmitted to the imaging apparatus PRT at the image information input device PC on the basis of the information, the user input state, the image data, types of used applications and the image input device, etc., and changing a state and(or) a setting state in the apparatus PRT by the device PC or the apparatus PRT. The recording medium DSK stores the program for executing the control method.

27. 发明专利

JP2001347727A IMAGING APPARATUS 失效
公开(公告)号：JP2001347727A
公开(公告)日：2001-12-18
申请号：JP2000174338
申请日：2000-06-09
申请人： MINOLTA CO LTD
发明人： MATSUURA MASAHIKO , AMARIGOME KISHO , MIYAMOTO HIDETOSHI , MIZUNO HIROSHI , KURITA TAKAHARU
IPC分类号： B41J29/26 , G03G15/22 , G03G21/00 , H04N1/00
摘要： PROBLEM TO BE SOLVED: To provide an imaging apparatus which can image on both plain and reversible imaging media while satisfying today's demand of reducing environmental load and in which a useless or erroneous try to image on an imaging medium of different type from that selected by an operator can be suppressed, and useless or erroneous try to image on a reversible imaging medium set differently from a specified direction, (i.e., upside down) can be suppressed. SOLUTION: The imaging apparatus comprises a first imaging section for imaging on a medium PP, a second imaging section for imaging on a medium TP, a detector for detecting the type of an imaging medium, and means for prohibiting the imaging, or imaging on other type of medium or discharging the medium, as it is, when the type of a detected medium is different from that selected by an operator.

28. 发明专利

JP2001109183A METHOD FOR NON-FIXING TYPE IMAGE FORMING, METHOD FOR REUSING IMAGE FORMING MATERIAL, IMAGE FORMING DEVICE AND IMAGE RECEIVING SHEET 失效
公开(公告)号：JP2001109183A
公开(公告)日：2001-04-20
申请号：JP28181299
申请日：1999-10-01
申请人： MINOLTA CO LTD
发明人： KURITA TAKAHARU , MIZUNO HIROSHI , MATSUURA MASAHIKO , MIYAMOTO HIDETOSHI , AMARIGOME KISHO
IPC分类号： G03G21/00 , G03G7/00 , G03G13/26 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To provide a non-fixing type image forming method in which an image is formed by holding a toner image so as to be separated and removed from the image receiving sheet and toner or/and the image receiving sheet are reused from the image receiving sheet on which the toner image is formed to provide, an image forming material reusing method, an image forming method, an image forming device and an image receiving sheet. SOLUTION: The image is formed on the image receiving sheet S. The image receiving sheet having an uneven surface s2' on which successive groove-like recesses R to receive the toner are regularly formed is adopted as the image receiving sheet, and the toner image is formed by removably sticking the toner T to the recess R of the uneven surface of the image receiving sheet, and the toner stuck to the recess is protected by a projected line part P along the successive groove-like recess, so that a stuck toner image is obtained as a formed image. The formation surface of the toner image may be covered with a protective sheet so as to be peeled. The toner is separated and removed from the image receiving sheet, and the image receiving sheet after removing the toner or/and the toner removed are reused.

29. 发明专利

JP2000066457A LIQUID DEVELOPING METHOD, CONCENTRATED LIQUID DEVELOPER, DILUENT LIQUID AND ITS PREPARATION 失效
公开(公告)号：JP2000066457A
公开(公告)日：2000-03-03
申请号：JP23460698
申请日：1998-08-20
申请人： MINOLTA CO LTD
发明人： FUJIWARA TOSHIMITSU , MIYAMOTO HIDETOSHI , AMARIGOME KISHO
IPC分类号： G03G9/12 , G03G9/135 , G03G13/10 , G03G15/10
摘要： PROBLEM TO BE SOLVED: To maintain the density of a last image to a specified value even when the image forming process is repeated, by controlling with the liquid component excluding a toner of a liquid developer to be used for development, the liquid component excluding a toner of a concentrated liquid, and a diluent liquid into same concn. of a charge controlling agent and same conductivity. SOLUTION: As for the replenisher liquid of a liquid developer, a concentrated liquid developer prepared by adding a charge controlling agent and a toner of higher density than the liquid developer to an electrically insulating carrier liquid, and a diluent liquid prepared by adding a charge controlling agent to an electric insulating carrier liquid are used. When the concentrated liquid developer and/or diluting liquid are to be supplied according to the state of the liquid developer, the liquid component of the concentrated liquid developer from which the solid component including the toner is excluded has substantially same charge controlling agent concn. and same conductivity as those of the liquid component of the liquid developer which is to be used for development and from which the solid content including the toner is removed.

30. 发明专利

JPH10282732A ELECTROPHOTOGRAPHIC LIQUID DEVELOPER 失效
公开(公告)号：JPH10282732A
公开(公告)日：1998-10-23
申请号：JP8543197
申请日：1997-04-04
申请人： MINOLTA CO LTD
发明人： MIYAMOTO HIDETOSHI , FUJIWARA TOSHIMITSU , IINO SHUJI , KANAZAWA MASAHARU , KOJIMA SEIJI
IPC分类号： G03G9/12 , G03G9/125 , G03G9/13
摘要： PROBLEM TO BE SOLVED: To obtain an electrophotographic liq. developer attaining a developing speed required in practical use, less liable to cause the settling of the toner and facilitating redispersion even when the toner settles by using an electric insulating carrier soln. in which a toner having internal voids and a specified vol. average particle diameter has been dispersed. SOLUTION: In this electrophotographic liq. developer contg. a toner dispersed in an electric insulating carrier soln., the toner has one or more internal voids and 0.5-5 μm vol. average particle diameter (d50 ). By this vol. average particle diameter (d50 ), developing speed required in practical use and high resolution are attained. Since the toner has internal voids, the specific gravity of the toner is low and the difference in specific gravity between the toner and the carrier soln. is reduced to reduce the rate of settling of toner particles. Even when the toner settles, the redispersion is facilitated. A toner sediment is not made dense and the blocking of a settled toner is hardly caused.

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