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1. 发明授权

US09989877B2 Transfer belt and image formation apparatus 有权
公开(公告)号：US09989877B2
公开(公告)日：2018-06-05
申请号：US15712433
申请日：2017-09-22
申请人： Konica Minolta, Inc.
发明人： Eiji Tabata , Makiko Watanabe , Nofumi Mizumoto , Keiko Momotani , Shigeo Uetake , Toshiya Natsuhara
IPC分类号： G03G15/00 , G03G15/01 , G03G15/16
CPC分类号： G03G15/0163 , G03G15/162 , G03G15/1675 , G03G15/1685 , G03G15/5012 , G03G2215/2009
摘要： A transfer belt transfers a toner image carried on a first main surface to a recording medium. When the transfer belt is pressed by using a lower block provided with a hole and an upper block with pressurization force increased at a prescribed rate and thereafter kept constant, E [-] and t0 are curve-fitted to a function E=α×exp(−t0/τ) defined by a time constant τ [s] with respect to an amount of displacement of the transfer belt and a constant α [-], where E [-] is calculated as (a−b)/b, a [μm] represents a maximum value of an amount of displacement of a measurement region, b [μm] represents an amount of displacement of the measurement region after converged, and t0 [s] represents a time period from start of pressurization until the maximum pressurization force, and time constant τ satisfies a condition of 0.015≤τ≤0.1.

2. 发明授权

US09316953B2 Wet-type image formation apparatus and a charging device for charging a recording medium, and method 有权
标题翻译：湿式图像形成装置和记录介质的充电装置及方法
公开(公告)号：US09316953B2
公开(公告)日：2016-04-19
申请号：US14253000
申请日：2014-04-15
申请人： KONICA MINOLTA, INC.
发明人： Junya Hirayama , Shigeo Uetake , Yuji Kamoda , Hirofumi Nakagawa , Toshiya Natsuhara
IPC分类号： G03G15/00 , G03G15/20 , G03G15/11
CPC分类号： G03G15/11 , G03G15/2021 , G03G15/657
摘要： A wet-type image formation apparatus includes: an intermediate transfer body that carries a toner image including toner particles, which are charged to have a first polarity, and a carrier liquid; a transferring roller that transfers a toner image onto a transfer surface of a recording medium; a charging device that charges the transfer surface to have a second polarity opposite to the first polarity; and a fixing mechanism that fixes the toner image. The fixing mechanism includes a noncontact heating device. The noncontact heating device forms the toner particles into a film such that the toner particles and the carrier liquid are separated from each other by heating the toner image when the toner particles charged to the first polarity is electrostatically adsorbed onto the transfer surface charged to have the second polarity. The film of the toner particles is fixed onto the transfer surface.
摘要翻译：湿式图像形成装置包括：中间转印体，其承载包含调色剂颗粒的调色剂图像，所述调色剂图像被带电为具有第一极性;和载体液体; 转印辊，其将调色剂图像转印到记录介质的转印表面上; 充电装置，其将所述转印表面充电以具有与所述第一极性相反的第二极性; 以及固定调色剂图像的固定机构。固定机构包括非接触加热装置。非接触式加热装置将调色剂颗粒形成为薄膜，使得调色剂颗粒和载体液体通过加热调色剂图像而彼此分离，当将调色剂颗粒充电至第一极性被静电吸附到转印表面上时，第二极性。调色剂颗粒的膜固定在转印表面上。

3. 发明授权

US09195181B2 Image forming apparatus and image forming method for forming an image on recording media with different gloss levels 有权
标题翻译：用于在具有不同光泽度的记录介质上形成图像的图像形成装置和图像形成方法
公开(公告)号：US09195181B2
公开(公告)日：2015-11-24
申请号：US14156942
申请日：2014-01-16
申请人： Konica Minolta, Inc.
发明人： Yuji Kamoda , Junya Hirayama , Shigeo Uetake , Toshiya Natsuhara
IPC分类号： G03G15/20
CPC分类号： G03G15/2021 , G03G15/205 , G03G2215/00805
摘要： An image forming apparatus includes a noncontact heating device, a pressurizing and heating mechanism, and a control unit. The control unit switches an operation of the pressurizing and heating mechanism based on gloss level information of a recording medium. According to the image forming apparatus, assuming that a temperature of the recording medium after noncontact heating is T1, a temperature of the recording medium after pressurizing and heating is T2 and a toner concentration after noncontact heating is Tc1 when the gloss level information shows high gloss, and assuming that a temperature of the recording medium after noncontact heating is T3 and a toner concentration after noncontact heating is Tc2 when the gloss level information shows low gloss, the conditions of T1
摘要翻译：图像形成装置包括非接触加热装置，加压加热机构和控制单元。控制单元基于记录介质的光泽度信息来切换加压和加热机构的操作。根据图像形成装置，假设非接触加热后的记录介质的温度为T1，加压加热后的记录介质的温度为T2，当光泽度信息显示高光泽时，非接触加热后的调色剂浓度为Tc1 ，并且假设非接触加热后的记录介质的温度为T3，当光泽度信息显示低光泽时，非接触加热后的调色剂浓度为Tc2，则满足T1

4. 发明授权

US10656569B2 Control electrode for image formation apparatus 有权
公开(公告)号：US10656569B2
公开(公告)日：2020-05-19
申请号：US16391166
申请日：2019-04-22
申请人： Konica Minolta, Inc.
发明人： Makiko Watanabe , Eiji Tabata , Nofumi Mizumoto , Toshiya Natsuhara
IPC分类号： G03G15/16
摘要： Prevention of an image defect due to discharging in a transfer portion and ensured transfer efficiency are both achieved. A control electrode is in contact with an outer circumferential surface of a secondary transfer roller on an upstream side of a position of contact between the secondary transfer roller and a recording medium in a direction of rotation of the secondary transfer roller. The control electrode has a potential set to a repel a toner image with respect to the secondary transfer roller. The control electrode is in contact with the outer circumferential surface of the secondary transfer roller under such a condition that discharging occurs in a gap between the secondary transfer roller and the intermediate transfer belt and a discharging current flows through the recording medium.

5. 发明授权

US10025231B2 Transfer belt and image forming device 有权
公开(公告)号：US10025231B2
公开(公告)日：2018-07-17
申请号：US15637482
申请日：2017-06-29
申请人： Konica Minolta, Inc.
发明人： Nofumi Mizumoto , Shigeo Uetake , Keiko Momotani , Eiji Tabata , Makiko Watanabe , Toshiya Natsuhara
IPC分类号： G03G15/16 , G03G15/01 , G03G15/00
摘要： A transfer belt includes: an elastic layer, wherein the transfer belt is used to transfer a toner image onto a recording medium, the toner image being carried on a first main surface which is one of a pair of main exposed surfaces including the first main surface and a second main surface, when, using a lower block and an upper block, the transfer belt is placed on an upper surface of the lower block, a part of the transfer belt is interposed between a curved convex surface and a curved concave surface, and a pressed region reaches a pressing force of 200 [kPa] and is constantly pressed by the pressing force, if “a” represents a maximum value of displacement of a measurement region, and “b” represents displacement of the measurement region after convergence, E [−] calculated by (a−b)/b satisfies a condition of 0.2≤E≤3.

6. 发明申请

US20140205308A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 有权
标题翻译：图像形成装置和图像形成方法
公开(公告)号：US20140205308A1
公开(公告)日：2014-07-24
申请号：US14156942
申请日：2014-01-16
申请人： Konica Minolta, Inc.
发明人： Yuji KAMODA , Junya Hirayama , Shigeo Uetake , Toshiya Natsuhara
IPC分类号： G03G15/20
CPC分类号： G03G15/2021 , G03G15/205 , G03G2215/00805
摘要： An image forming apparatus includes a noncontact heating device, a pressurizing and heating mechanism, and a control unit. The control unit switches an operation of the pressurizing and heating mechanism based on gloss level information of a recording medium. According to the image forming apparatus, assuming that a temperature of the recording medium after noncontact heating is T1, a temperature of the recording medium after pressurizing and heating is T2 and a toner concentration after noncontact heating is Tc1 when the gloss level information shows high gloss, and assuming that a temperature of the recording medium after noncontact heating is T3 and a toner concentration after noncontact heating is Tc2 when the gloss level information shows low gloss, the conditions of T1
摘要翻译：图像形成装置包括非接触加热装置，加压加热机构和控制单元。控制单元基于记录介质的光泽度信息来切换加压和加热机构的操作。根据图像形成装置，假设非接触加热后的记录介质的温度为T1，加压加热后的记录介质的温度为T2，当光泽度信息显示高光泽时，非接触加热后的调色剂浓度为Tc1 ，并且假设非接触加热后的记录介质的温度为T3，当光泽度信息显示低光泽时，非接触加热后的调色剂浓度为Tc2，则满足T1

7. 发明授权

US10678175B2 Image forming device 有权
公开(公告)号：US10678175B2
公开(公告)日：2020-06-09
申请号：US16118158
申请日：2018-08-30
申请人： Konica Minolta, Inc.
发明人： Eiji Tabata , Nofumi Mizumoto , Makiko Watanabe , Shigeo Uetake , Toshiya Natsuhara
IPC分类号： G03G15/16 , G03G15/00
摘要： An image forming device includes: an endless intermediate transfer belt; and a secondary transferrer, wherein the secondary transferrer includes a secondary transfer roller and a counter roller, a value calculated from w/Vsys is defined as a nip time N [sec], when the secondary transferrer is deemed as an equivalent circuit including a resistance R1 [Ω·m2] of the secondary transfer roller, a resistance R2 [Ω·m2] of the intermediate transfer belt, a resistance R3 [Ω·m2] of the counter roller, and capacitance Cmed [F/m2] of a recording medium, in a case where a combined resistance in the equivalent circuit is defined as Rtotal [Ω·m2], and combined capacitance in the equivalent circuit is defined as Ctotal [F/m2], a value calculated from Rtotal×Ctotal is defined as a time constant τ [sec], and the image forming device further includes: a sheet detector; and a hardware processor.

8. 发明授权

US09983520B2 Transfer belt and image forming apparatus 有权
公开(公告)号：US09983520B2
公开(公告)日：2018-05-29
申请号：US15634712
申请日：2017-06-27
申请人： KONICA MINOLTA, INC.
发明人： Eiji Tabata , Nofumi Mizumoto , Toshiya Natsuhara , Shigeo Uetake , Keiko Momotani , Makiko Watanabe
IPC分类号： G03G15/16
CPC分类号： G03G15/169 , G03G15/162 , G03G15/1685
摘要： A transfer belt is configured to transfer a toner image carried on a first main surface of the transfer belt to a recording medium. When the transfer belt is pressed with pressure application three increased at a predetermined pressure application rate and is then pressed with certain pressure application force by using a lower block provided with a hole and an upper block, k2 [μm/s] satisfies 6≤k2≤30, k2 [μm/s] being determined by (a−b)/{2×(t2−t1)}, where a [μm/s] represents a maximum value of a displacement amount of a measurement region that is a portion of the first main surface corresponding to the hole, b [μm] represents a convergence value thereof, t1 [s] represents a time when the maximum value is observed, and t2 [s] represents a time when the displacement amount reaches (a+b)/2 again after the maximum value is observed.

9. 发明申请

US20140321892A1 WET-TYPE IMAGE FORMATION APPARATUS 有权
标题翻译：湿式图像形成装置
公开(公告)号：US20140321892A1
公开(公告)日：2014-10-30
申请号：US14253000
申请日：2014-04-15
申请人： KONICA MINOLTA, INC.
发明人： Junya HIRAYAMA , Shigeo Uetake , Yuji Kamoda , Hirofumi Nakagawa , Toshiya Natsuhara
IPC分类号： G03G15/00 , G03G15/20
CPC分类号： G03G15/11 , G03G15/2021 , G03G15/657
摘要： A wet-type image formation apparatus includes: an intermediate transfer body that carries a toner image including toner particles, which are charged to have a first polarity, and a carrier liquid; a transferring roller that transfers a toner image onto a transfer surface of a recording medium; a charging device that charges the transfer surface to have a second polarity opposite to the first polarity; and a fixing mechanism that fixes the toner image. The fixing mechanism includes a noncontact heating device. The noncontact heating device forms the toner particles into a film such that the toner particles and the carrier liquid are separated from each other by heating the toner image when the toner particles charged to the first polarity is electrostatically adsorbed onto the transfer surface charged to have the second polarity. The film of the toner particles is fixed onto the transfer surface.
摘要翻译：湿式图像形成装置包括：中间转印体，其承载包含调色剂颗粒的调色剂图像，所述调色剂图像被带电为具有第一极性;和载体液体; 转印辊，其将调色剂图像转印到记录介质的转印表面上; 充电装置，其将所述转印表面充电以具有与所述第一极性相反的第二极性; 以及固定调色剂图像的固定机构。固定机构包括非接触加热装置。非接触式加热装置将调色剂颗粒形成为薄膜，使得调色剂颗粒和载体液体通过加热调色剂图像而彼此分离，当将调色剂颗粒充电至第一极性被静电吸附到转印表面上时，第二极性。调色剂颗粒的膜固定在转印表面上。

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