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公开(公告)号：EP1120692A4
公开(公告)日：2002-08-21
申请号：EP00944302
申请日：2000-07-06
申请人： PFU LTD
发明人： NAKASHIMA YUTAKA , INAMOTO AKIHIKO , UESUGI SHIGEKI , MOTO SATORU , TAKABATAKE MASANARI , ICHIDA MOTOHARU , OKANO SHIGEHARU , TAKEDA SEIICHI , HONGAWA HIRONAGA , TERASHIMA HITOSHI , SAKAI SATOSHI , MIYAMOTO SATOSHI
CPC分类号： G03G15/161 , G03G2215/1695
摘要： A toner image is transferred onto an intermediate transfer belt (24) from a photosensitive body (10), and toner particles transferred onto the belt (24) are heated to be melt-transferred onto a printing medium. A carrier removing roller (29) is provided in a position, from which a toner layer has been heat-melted, on the belt (24), and a carrier medium is efficiently removed by using a phenomenon in which toner particles (resin component) are integrated together when the toner particles are heated and melted and a phenomenon in which a carrier medium (liquid component) is separated. In addition, a carrier removing roller (28) is provided for removing the carrier medium on the belt (24) in a heat-melting position where the toner layer on the belt (24) is being heat-melted.
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公开(公告)号：EP1619561A4
公开(公告)日：2009-12-16
申请号：EP04729252
申请日：2004-04-23
申请人： PFU LTD
发明人： HONGAWA HIRONAGA , YAMANADA KAZUTO
CPC分类号： G03G15/104
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3.发明公开
公开(公告)号：EP1293844A4
公开(公告)日：2008-04-09
申请号：EP01934493
申请日：2001-06-01
申请人： PFU LTD
发明人： NAKASHIMA YUTAKA , INAMOTO AKIHIKO , UESUGI SHIGEKI , MOTO SATORU , ICHIDA MOTOHARU , TAKABATAKE MASANARI , OKANO SHIGEHARU , TAKEDA SEIICHI , NISHIKAWA TADASHI , MIYAMOTO SATOSHI , TERASHIMA HITOSHI , SAKAI SATOSHI , HONGAWA HIRONAGA , HONGO MASANOBU , DU JIYUN
CPC分类号： G03G15/161 , G03G15/0194 , G03G15/1605 , G03G2215/0658 , G03G2215/1695
摘要： A developing unit uses liquid toner as a liquid developing solution to form toner images according to electric fields generated between it and photosensitive drums. An intermediate roller (15) receives transferred toner images according to electric fields between it and photosensitive drums. A transfer-fixing unit further transfers a toner image on the intermediate roller onto an intermediate transfer belt (16) and fusion-transfers it onto a printing medium. Photosensitive drums (11-14), provided for each of a plurality of color-toners, transfer toner images formed thereon onto the intermediate transfer roller one by one for subsequent overlapping. With the intermediate transfer roller kept at a ground level, voltages controlled according to electric characteristics specific to respective color toners on the plurality of photosensitive drums are applied to the drums to thereby produce electric fields required for transfers onto the intermediate transfer roller. In addition, a toner coagulation increasing device is provided that increases the toner coagulation of a toner image on the intermediate transfer roller so as to prevent the reverse-transfer of toner images, transferred previously on the intermediate transfer roller, onto the photosensitive drums.
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公开(公告)号：EP1471395A4
公开(公告)日：2010-02-17
申请号：EP03701896
申请日：2003-01-28
申请人： PFU LTD
发明人： ICHIDA MOTOHARU , MORIGUCHI SATOSHI , KISHIMOTO YASUHIKO , HONGO MASANOBU , UESUGI SHIGEKI , KAWAMOTO YOSHIRO , TAKEDA SEIICHI , YOSHIDA TADASUKE , FUJIMOTO YOSHIAKI , DU JIYUN , HONGAWA HIRONAGA , YAMANISHI ERI , NOZAKI TATSUO , OKANO SHIGEHARU , NAGATA ISAO
CPC分类号： G03G15/161 , G03G2215/0103 , G03G2215/0658 , G03G2215/1671
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5.发明公开METHOD AND DEVICE FOR CLEANING LIQUID DEVELOPMENT ELECTROPHOTOGRAPHIC DEVICE 审中-公开方法和装置清洁液体显影电气设备摄影
公开(公告)号：EP1473602A4
公开(公告)日：2010-01-13
申请号：EP03701895
申请日：2003-01-28
申请人： PFU LTD
发明人： NAGATA ISAO , SAKAI SATOSHI , HONGAWA HIRONAGA , OKANO SHIGEHARU , YAMANISHI ERI , YAMASAKU NORIHIRO
CPC分类号： G03G15/161 , G03G21/0088 , G03G2215/0103 , G03G2215/1661
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公开(公告)号：EP1286230A4
公开(公告)日：2008-04-09
申请号：EP01921952
申请日：2001-04-20
申请人： PFU LTD
发明人： NAKASHIMA YUTAKA , INAMOTO AKIHIKO , UESUGI SHIGEKI , MOTO SATORU , TAKABATAKE MASANARI , ICHIDA MOTOHARU , OKANO SHIGEHARU , TAKEDA SEIICHI , NISHIKAWA TADASHI , MIYAMOTO SATOSHI , TERASHIMA HITOSHI , SAKAI SATOSHI , HONGAWA HIRONAGA , HONGO MASANOBU , DU JIYUN
CPC分类号： G03G15/161 , G03G15/101 , G03G15/162 , G03G2215/0119 , G03G2215/1695
摘要： A liquid development electrophotographic apparatus using a liquid toner exhibiting nonvolatility and having a high viscosity and a high concentration as a liquid developer, in which the liquid developer is supplied in contact with a photosensitive drums (11-14) on which electrostatic latent images are formed, and toner particles of the liquid developer are adhered to the photosensitive drums (11-14) according to the electric fields produced between an intermediate transfer roller and the respective photosensitive drums (11-14) so as to form toner images, an intermediate transfer part is composed of the intermediate transfer roller (15) and an intermediate transfer belt (16) and used for transfer the toner images on the photosensitive drums onto the intermediate transfer belt, a transfer fixing part has a heater for heating and fusing the toner images transferred onto the intermediate transfer belt (16) at a contact portion in contact with a printing medium and fuse-transferring them onto the printing medium, and a developing part is disposed at the lower part of the apparatus. Therefore even if the liquid developer leaks, the printing medium and the intermediate transfer part do not stain.
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公开(公告)号：EP1420306A4
公开(公告)日：2009-11-25
申请号：EP02755810
申请日：2002-08-05
申请人： PFU LTD
发明人： SAKAI SATOSHI , NAGATA ISAO , HONGAWA HIRONAGA , OKANO SHIGEHARU , YAMANISHI ERI , NAKASHIMA YUTAKA , INAMOTO AKIHIKO , NISHIKAWA TADASHI , YAMASAKU NORIHIRO
CPC分类号： G03G15/11 , G03G2215/0106 , G03G2215/0119 , G03G2215/0187
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8.发明公开TRANSFERRING/FIXING SYSTEM OF LIQUID DEVELOPING ELECTROPHOTOGRAPHIC SYSTEM 审中-公开TRANSFER /固定ELECTRIC PHOTOGRAPHIC流体系统开发
公开(公告)号：EP1378801A4
公开(公告)日：2009-07-15
申请号：EP02707242
申请日：2002-03-29
申请人： PFU LTD
发明人： HONGAWA HIRONAGA , SAKAI SATOSHI , YAMANISHI ERI , NAGATA ISAO , OKANO SHIGEHARU , NAKASHIMA YUTAKA , NISHIKAWA TADASHI , INAMOTO AKIHIKO , MIYAMOTO SATOSHI
CPC分类号： G03G15/1625 , G03G15/161 , G03G15/1695 , G03G2215/1619 , G03G2215/1671 , G03G2215/1695
摘要： Liquid toner is supplied onto an image support on which an electrostatic latent image is formed and a developed toner image is transferred to an intermediate transfer body before being transferred and fixed onto a print medium at a transferring/fixing section using a backup roller. The print medium is preheated up to a temperature required for transferring/fixing the toner image before being carried to the transferring/fixing section. The transferring/fixing section is not provided with a heating means and a high pressure in the range of 10-60 kg/cm is set between the intermediate transfer body and the backup roller. Alternatively, the intermediate transfer body is provided with a heating means and the softening temperature of resin for use in the liquid toner is set not higher than the heat resisting temperature of other members, e.g. a photosensitive drum, and the temperature of the intermediate transfer body is set to not lower than the softening temperature of resin but not higher than the heat resisting temperature of other members.
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公开(公告)号：EP1286231A4
公开(公告)日：2003-07-16
申请号：EP01930133
申请日：2001-05-15
申请人： PFU LTD
发明人： NAKASHIMA YUTAKA , INAMOTO AKIHIKO , UESUGI SHIGEKI , MOTO SATORU , TAKABATAKE MASANARI , ICHIDA MOTOHARU , OKANO SHIGEHARU , TAKEDA SEIICHI , NISHIKAWA TADASHI , MIYAMOTO SATOSHI , TERASHIMA HITOSHI , SAKAI SATOSHI , HONGAWA HIRONAGA , HONGO MASANOBU , SHIBATA HIDEAKI , KISHIMOTO YASUHIKO , NOZAKI TATSUO
CPC分类号： G03G15/101
摘要： A liquid developing electrophotographic device comprising an applicator roller for carrying a liquid toner in uniform thin layer form onto a developing roller to apply it to the latter, and a conductive blade for contact with a liquid toner layer on the developing roller. A predetermined amount of liquid toner is passed between the conductive blade and the developing roller, and a voltage is applied to the conductive blade so that a state in which the toner particles contained in the liquid toner become sparse is established on the uniform thin layer-like toner layer surface on the developing roller. Thereafter, the liquid toner, on whose surface is established the state in which the toner particles are made sparse, comes in contact with an image substrate to effect development.
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