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1. 发明申请

US20150071664A1 WET-TYPE IMAGE FORMATION APPARATUS 有权
标题翻译：湿式图像形成装置
公开(公告)号：US20150071664A1
公开(公告)日：2015-03-12
申请号：US14483729
申请日：2014-09-11
申请人： Konica Minolta, Inc.
发明人： Atsuto Hirai , Takeshi Maeyama , Yuuya Sato , Makiko Watanabe
IPC分类号： G03G15/10
CPC分类号： G03G15/5058 , G03G15/10
摘要： In the present wet-type image formation apparatus, when setting a standard image formation condition, a control unit adjusts both a conveyance amount of toner and a charge amount of the toner in order to obtain a predetermined developing characteristic. During normal image formation, the control unit obtains the image density of a patch image formed at a high contrast potential and the image density of a patch image formed at a low contrast potential, adjusts the conveyance amount of the toner when the image density of the patch image formed at the high contrast potential is varied from the developing characteristic for the standard image formation condition, and adjusts the charge amount of the toner when the image density of the patch image formed at the low contrast potential is varied from the developing characteristic for the standard image formation condition.
摘要翻译：在本湿式图像形成装置中，当设定标准图像形成条件时，为了获得预定的显影特性，控制单元调节调色剂的输送量和调色剂的带电量。在正常图像形成期间，控制单元获得以高对比度电位形成的贴片图像和以低对比度电位形成的贴片图像的图像浓度的图像浓度，当调色剂的图像浓度在高对比度电位下形成的贴片图像与用于标准图像形成条件的显影特性不同，并且当以低对比度电位形成的贴片图像的图像浓度从显影特性变化时调节调色剂的电荷量，标准图像形成条件。

2. 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.

3. 发明授权

US09291938B2 Wet-type image formation apparatus 有权
标题翻译：湿式图像形成装置
公开(公告)号：US09291938B2
公开(公告)日：2016-03-22
申请号：US14483817
申请日：2014-09-11
申请人： Konica Minolta, Inc.
发明人： Takeshi Maeyama , Atsuto Hirai , Yuuya Sato , Makiko Watanabe
IPC分类号： G03G15/06 , G03G15/10 , G03G15/00
CPC分类号： G03G15/065 , G03G15/10 , G03G15/5041
摘要： When a toner charging amount for toner in a liquid developer conveyed to a development portion is set, a wet-type image formation apparatus performs a sensing operation in which a sensing unit senses image densities of a plurality of patch images formed at different development biases with the toner charging amount being set to a constant value, and a setting operation in which, in a case where a control unit calculates current development characteristics based on the image densities of the plurality of patch images sensed by the sensing unit, and determines that the current development characteristics are not included within a set target range, the control unit controls a charging unit to set the toner charging amount such that the development characteristics are included within the set target range.
摘要翻译：当设置传送到显影部分的液体显影剂中调色剂的调色剂充量量时，湿式图像形成装置执行感测操作，其中感测单元以不同显影偏差形成的多个贴片图像的图像密度感测，调色剂充电量被设定为一定值，以及设定操作，其中，在控制单元基于由感测单元感测到的多个贴片图像的图像浓度来计算当前显影特性的情况下，并且确定当前的显影特性不包括在设定的目标范围内时，控制单元控制充电单元以将显影特性包括在设定的目标范围内来设定调色剂带电量。

4. 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.

5. 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.

6. 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.

7. 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.

8. 发明授权

US09383705B2 Wet-type image formation apparatus adjusting toner conveyance amount and toner charge amount 有权
标题翻译：湿式图像形成装置调节调色剂输送量和调色剂带电量
公开(公告)号：US09383705B2
公开(公告)日：2016-07-05
申请号：US14483729
申请日：2014-09-11
申请人： Konica Minolta, Inc.
发明人： Atsuto Hirai , Takeshi Maeyama , Yuuya Sato , Makiko Watanabe
IPC分类号： G03G15/08 , G03G15/00 , G03G15/10
CPC分类号： G03G15/5058 , G03G15/10
摘要： In the present wet-type image formation apparatus, when setting a standard image formation condition, a control unit adjusts both a conveyance amount of toner and a charge amount of the toner in order to obtain a predetermined developing characteristic. During normal image formation, the control unit obtains the image density of a patch image formed at a high contrast potential and the image density of a patch image formed at a low contrast potential, adjusts the conveyance amount of the toner when the image density of the patch image formed at the high contrast potential is varied from the developing characteristic for the standard image formation condition, and adjusts the charge amount of the toner when the image density of the patch image formed at the low contrast potential is varied from the developing characteristic for the standard image formation condition.
摘要翻译：在本湿式图像形成装置中，当设定标准图像形成条件时，为了获得预定的显影特性，控制单元调节调色剂的输送量和调色剂的带电量。在正常图像形成期间，控制单元获得以高对比度电位形成的贴片图像和以低对比度电位形成的贴片图像的图像浓度的图像浓度，当调色剂的图像浓度在高对比度电位下形成的贴片图像与用于标准图像形成条件的显影特性不同，并且当以低对比度电位形成的贴片图像的图像浓度从显影特性变化时调节调色剂的电荷量，标准图像形成条件。

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