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1.发明授权Image forming apparatus generating electrostatic forces in first and second directions with a predetermined duty ratio 有权图像形成装置以预定的占空比在第一和第二方向上产生静电力公开(公告)号：US08204412B2
公开(公告)日：2012-06-19
申请号：US12771539
申请日：2010-04-30
申请人： Kenta Kubo , Takeshi Yamamoto , Manami Haraguchi , Tomoaki Miyazawa , Juun Horie
发明人： Kenta Kubo , Takeshi Yamamoto , Manami Haraguchi , Tomoaki Miyazawa , Juun Horie
CPC分类号： G03G15/0907 , G03G9/10 , G03G9/107 , G03G2215/0602
摘要： A duty ratio Du (%), denoted by (T2/(T1+T2))×100, is in the range of 60≦Du≦80; a magnetic carrier has a resistivity ρ which decreases in accordance with an increasing electric field strength, and a relative dielectric constant ∈ which increases in accordance with an increasing electric field strength; a product of a time constant ∈0∈ρ(s) of electric charge decay in an electric field strength E2D decided by a second peak voltage V2 and a dark potential VD, and an electric field strength E2D satisfies a relation of 20≦∈0∈ρ E2D (s·V/cm); and a time constant ∈0∈ρ(s) and a relative dielectric constant ∈ in an electric field strength E1L, which is decided by a first peak voltage V1 and a bright potential VL, satisfy the following relations: ∈0∈ρ(s)≦6.0×10−4, and 30≦∈.
摘要翻译： 由（T2 /（T1 + T2））×100表示的占空比Du（％）在60＆amp; nlE的范围内; Du＆nlE; 80; 磁性载体具有电阻率＆rgr; 其随着电场强度的增加而减小，相对介电常数ε随电场强度的增加而增加; 由第二峰值电压V2和暗电位VD决定的电场强度E2D中电荷衰减的时间常数∈0∈＆rgr（s）的乘积，电场强度E2D满足关系20＆nlE;∈ 0∈＆rgr; E2D（s·V / cm）; 并且由第一峰值电压V1和亮电位VL确定的电场强度E1L中的时间常数∈0∈＆rgr（s）和相对介电常数∈满足以下关系：∈0∈＆rgr; （s）＆nlE; 6.0×10-4和30＆nlE;∈。
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2.发明申请公开(公告)号：US20120094225A1
公开(公告)日：2012-04-19
申请号：US13275250
申请日：2011-10-17
申请人： Koh Ishigami , Kazuo Terauchi , Noriyoshi Umeda , Tetsuya Ida , Naoki Okamoto , Yojiro Hotta , Yoshinobu Baba , Takayuki Itakura , Takeshi Yamamoto , Manami Haraguchi , Kenta Kubo
发明人： Koh Ishigami , Kazuo Terauchi , Noriyoshi Umeda , Tetsuya Ida , Naoki Okamoto , Yojiro Hotta , Yoshinobu Baba , Takayuki Itakura , Takeshi Yamamoto , Manami Haraguchi , Kenta Kubo
CPC分类号： G03G15/01 , G03G9/0821 , G03G9/0823 , G03G9/083 , G03G9/09 , G03G9/10
摘要： A two-component developer containing a cyan toner and a magnetic carrier, the cyan toner having the following characteristics: (i) when the concentration of the cyan toner in a solution of the cyan toner in chloroform is represented by Cc (mg/ml) and the absorbance of the solution at a wavelength of 712 nm is represented by A712, a relationship between Cc and A712 satisfies the relationship of 2.00
摘要翻译： 含有青色调色剂和磁性载体的双组分显影剂，青色调色剂具有以下特征：（i）当青色调色剂在氯仿中的溶液中的青色调色剂的浓度由Cc（mg / ml）表示时， 而波长为712nm处的溶液的吸光度由A712表示，Cc和A712之间的关系满足2.00
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3.发明授权公开(公告)号：US08059995B2
公开(公告)日：2011-11-15
申请号：US12817523
申请日：2010-06-17
申请人： Takeshi Yamamoto , Yoshinobu Baba , Manami Haraguchi , Kenta Kubo
发明人： Takeshi Yamamoto , Yoshinobu Baba , Manami Haraguchi , Kenta Kubo
IPC分类号： G03G15/09
CPC分类号： G03G15/065 , G03G2215/0602 , G03G2215/0607 , G03G2215/0634
摘要： An image forming apparatus including: an image bearing member; and a developer bearing member bearing a developer including a toner and a carrier, the developer bearing member developing an electrostatic image formed on the image bearing member with the developer, and the developer bearing member being applied with an alternate voltage in order to form an alternate electric field between the developer bearing member and the image bearing member, wherein assuming that electric field intensities Eb and Ed be Eb=|(Vp1−VL)/D| and Ed=|(Vp2−VL)/D|, a relationship, 0≧K1>K2, is satisfied, where K1: a gradient at Ed, and K2: a gradient at Eb, and wherein a resistivity ρb of the carrier at the electric field intensity Eb satisfies 1.1×106×en
摘要翻译： 一种图像形成装置，包括：图像承载部件; 以及承载含有调色剂和载体的显影剂的显影剂承载部件，所述显影剂承载部件用形成有显影剂的图像承载部件上形成的静电图像显影，并且所述显影剂承载部件被施加交替电压以形成交替的 显影剂承载部件和图像承载部件之间的电场，其中假设电场强度Eb和Ed为Eb = |（Vp1-VL）/ D | 和Ed = |（Vp2-VL）/ D |，满足关系式0≥K1> K2，其中K1：Ed处的梯度，K2：Eb处的梯度，其中电阻率＆rgr; b 载流子电场强度Eb满足1.1×106×en
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4.发明申请公开(公告)号：US20100248126A1
公开(公告)日：2010-09-30
申请号：US12797124
申请日：2010-06-09
申请人： Koh Ishigami , Kazuo Terauchi , Noriyoshi Umeda , Tetsuya Ida , Naoki Okamoto , Yojiro Hotta , Yoshinobu Baba , Takayuki Itakura , Takeshi Yamamoto , Manami Haraguchi , Kenta Kubo
发明人： Koh Ishigami , Kazuo Terauchi , Noriyoshi Umeda , Tetsuya Ida , Naoki Okamoto , Yojiro Hotta , Yoshinobu Baba , Takayuki Itakura , Takeshi Yamamoto , Manami Haraguchi , Kenta Kubo
CPC分类号： G03G15/01 , G03G9/0821 , G03G9/0823 , G03G9/083 , G03G9/09 , G03G9/10
摘要： A two-component developer containing a magenta toner and a magnetic carrier, wherein the magenta toner has the characteristics: (i) when the concentration of the magenta toner in a solution of the magenta toner in chloroform is represented by Cm (mg/ml) and the absorbance of the solution at a wavelength of 538 nm is represented by A538, a relationship between Cm and A538 satisfies the relationship of 2.00
摘要翻译： 含有品红色调色剂和磁性载体的双组分显影剂，其中品红色调色剂具有以下特征：（i）当品红色调色剂在氯仿中的溶液中品红色调色剂的浓度以Cm（mg / ml）表示时， 波长538nm处的溶液的吸光度由A538表示，Cm和A538之间的关系满足2.00
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公开(公告)号：US20100183971A1
公开(公告)日：2010-07-22
申请号：US12691063
申请日：2010-01-21
申请人： Hiroyuki Fujikawa , Koh Ishigami , Kunihiko Nakamura , Nozomu Komatsu , Yoshinobu Baba , Takeshi Yamamoto , Manami Haraguchi , Kenta Kubo
发明人： Hiroyuki Fujikawa , Koh Ishigami , Kunihiko Nakamura , Nozomu Komatsu , Yoshinobu Baba , Takeshi Yamamoto , Manami Haraguchi , Kenta Kubo
CPC分类号： G03G9/107 , G03G9/0819 , G03G9/0827 , G03G9/1131 , G03G9/1136
摘要： A magnetic carrier having magnetic carrier particles each containing at least a magnetic core particle and a resin; the magnetic carrier having a resistivity of from 1.0×106 Ω·cm or more to 1.0×1010 Ω·cm or less at an electric-field intensity of 1.0×103 V/cm as found by measuring dynamic impedance; electric-field intensity E(109) at which the resistivity of the magnetic carrier comes to 1.0×109 Ω·cm being 2.0×104 V/cm or less, and electric-field intensity E(108) at which the resistivity of the magnetic carrier comes to 1.0×108 Ω·cm being from 5.0×103 V/cm or more to 2.8×104 V/cm or less; and the electric-field intensity E(108) and the electric-field intensity E(109) being in a ratio, E(108)/E(109), of from 1.0 or more to 5.0 or less.
摘要翻译： 具有磁性载体颗粒的磁性载体，每个磁性载体颗粒至少含有磁芯颗粒和树脂; 磁性载体的电场强度为1.0×10 3 V / cm，电阻率为1.0×10 6Ω·cm·cm〜1.0×10 10Ω·cm·cm以下，通过测定动态阻抗; 磁性载体的电阻率为1.0×109Ω·cm·cm的电场强度E（109）为2.0×10 4 V / cm以下，电场强度E（108）为 磁载体为5.0×10 3 V / cm以上至2.8×10 4 V / cm以下的1.0×10 8Ω·cm·cm。 电场强度E（108）和电场强度E（109）的比例为E（108）/ E（109），为1.0以上且5.0以下。
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6.发明授权Image forming apparatus using peak AC potentials to move toner toward an image bearing member and a developer carrying member, respectively 有权使用峰值AC电位的图像形成装置分别将调色剂朝向图像承载部件和显影剂承载部件移动公开(公告)号：US07715744B2
公开(公告)日：2010-05-11
申请号：US12104032
申请日：2008-04-16
申请人： Tomoaki Miyazawa , Takeshi Yamamoto , Manami Haraguchi , Kenta Kubo , Juun Horie
发明人： Tomoaki Miyazawa , Takeshi Yamamoto , Manami Haraguchi , Kenta Kubo , Juun Horie
CPC分类号： G03G15/0907 , G03G2215/0607
摘要： An image forming apparatus includes a photosensitive drum to which an electrostatic image is formed and a developing sleeve carrying a developer including toner carrier. An alternating voltage is applied to the sleeve to form an alternating electric field between the sleeve and the drum to develop the electrostatic image with the developer. A relation |K1|
摘要翻译： 图像形成装置包括形成有静电图像的感光鼓和承载包含调色剂载体的显影剂的显影套筒。 交替电压施加到套筒上以在套筒和鼓之间形成交变电场，以与显影剂一起显影静电图像。 关系| K1 | <| K2 | 满足，其中K1：电场强度Ed = |（Vp2-VL）/ D |，K2：电场强度Eb = |（Vp1-VL）/ D |的斜率/ D |，VL：电位 Vp1：提供向硒鼓移动调色剂的电位差的峰值电位[V]，Vp2：提供电位差的峰值电位[V] 将墨粉朝袖子移动，D：鼓和袖子之间的最近距离[m]。
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公开(公告)号：US20080187338A1
公开(公告)日：2008-08-07
申请号：US12022575
申请日：2008-01-30
申请人： Takeshi Yamamoto , Manami Haraguchi , Kenta Kubo , Yoshinobu Baba , Koh Ishigami
发明人： Takeshi Yamamoto , Manami Haraguchi , Kenta Kubo , Yoshinobu Baba , Koh Ishigami
IPC分类号： G03G15/06
CPC分类号： G03G15/065 , G03G5/04 , G03G15/0806 , G03G15/5037 , G03G15/5062 , G03G2215/00037 , G03G2215/0607
摘要： An image forming apparatus, wherein the following formulae are satisfied: 0.22 ≤ ( M / S ) L ≤ 0.4 , ( Q M ) L = Vc ( Lt 2 ɛ 0 ɛ t + Ld ɛ 0 ɛ d ) × ( M S ) L ( Dt max - Dt 0.1 ) { λ × ( M S ) L - 0.1 } ( Lt 2 ɛ 0 ɛ t + Ld ɛ 0 ɛ d ) × ( M S ) L 500 ≤ αβ ≤ ( Dt max - Dt 0.1 ) { λ × ( M S ) L - 0.1 } ( Lt 2 ɛ 0 ɛ t + Ld ɛ 0 ɛ d ) × ( M S ) L 150 αβ ≥ ( Dt max - Dt 0.1 ) { λ × ( M S ) L - 0.1 } 150 where (M/S)L: a toner bearing amount in a maximum density image portion of a photosensitive drum, (Q/M)L: an average charge amount of the toner in the maximum density portion, Vc: an absolute value of a potential difference between a DC-component of a developing bias and the maximum density portion, Lt: a toner layer thickness of the maximum density portion, Ld: a drum thickness, εt: a relative permittivity of the toner layer, εd: a relative permittivity of the drum, ε0: a vacuum permittivity, Dtmax: a transmission density in a maximum density image portion on the paper after fixation, Dt0.1: a transmission density in an image on the paper when the toner bearing amount on the paper after fixation is 0.1 mg/cm2, and λ: a transfer efficiency of the toner, α = ( Dt max - Dt 0.1 ) { λ × ( M S ) L - 0.1 } , and β = 1 / ( Q / M ) L .
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公开(公告)号：US07072607B2
公开(公告)日：2006-07-04
申请号：US10733358
申请日：2003-12-12
IPC分类号： G03G15/08
CPC分类号： G03G15/0815
摘要： A developing apparatus includes a developer carrying member for carrying a developer to develop an electrostatic latent image formed on and image bearing member, the developer carrying member having an elastic property; scraping/supplying member, contacted into the developer carrying member, for supplying the developer to the developer carrying member and for scraping the developer off the developer carrying member, the scraping/supplying member having an elastic property, wherein the developer carrying member has a hardness which is higher than that of the scraping/supplying member, and wherein the developer carrying member and the scraping/supplying member satisfy that in a state in which the scraping/supplying member is out of contact with the developer carrying member, a radius of curvature of the scraping/supplying member is larger than a radius of curvature of the developer carrying member at a position of contact between the scraping/supplying member and the developer carrying member.
摘要翻译： 显影装置包括用于承载显影剂以显影形成在其上的静电潜像和图像承载部件的显影剂承载部件，显影剂承载部件具有弹性; 刮擦/供给构件，接触到显影剂承载构件中，用于将显影剂供应到显影剂承载构件并将显影剂从显影剂承载构件刮下，刮擦/供给构件具有弹性，其中显影剂承载构件具有硬度 其高于刮削/供给部件，并且其中显影剂承载部件和刮擦/供给部件满足在刮擦/供给部件与显影剂承载部件不接触的状态下，曲率半径 刮削/供给构件的大小大于在刮除/供给构件和显影剂承载构件之间的接触位置处的显影剂承载构件的曲率半径。
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公开(公告)号：US06829464B2
公开(公告)日：2004-12-07
申请号：US10434057
申请日：2003-05-09
IPC分类号： G03G1508
CPC分类号： G03G15/0844
摘要： The developing apparatus includes a developer bearing member, a developer removing-feeding member and a circulating member, wherein the developer circulating member has a push-in amount to the removing-feeding member equal to or larger than a push-in amount of the developer circulating member to the developer removing-feeding member, thereby preventing toner fusion or generation of uncharged developer by a deterioration of the developer, and realizing stable development over a prolonged period.
摘要翻译： 显影装置包括显影剂承载构件，显影剂移除供给构件和循环构件，其中显影剂循环构件具有与去除送料构件相同的推入量等于或大于显影剂的推入量 循环构件到显影剂去除进给构件，从而防止由于显影剂的劣化而导致调色剂熔融或产生不带电显影剂，并且在长时间内实现稳定的显影。
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公开(公告)号：US06564027B2
公开(公告)日：2003-05-13
申请号：US09897928
申请日：2001-07-05
IPC分类号： G03G1502
CPC分类号： G03G15/0233 , G03G15/0818 , G03G2221/0005
摘要： An image forming apparatus includes an image bearing member and an electrostatic image forming device, which is adapted to form an electrostatic image on the image bearing member, and which includes an electrifying member contacted with the image bearing member to electrify the image bearing member. The electrifying member includes a first conductive member to which voltage is applied, and a developer carrying member cooperating with the image bearing member to form a nip therebetween and is adapted to carry developer to the nip and to develop the electrostatic image with the developer. The electrifying member also includes a second conductive member to which a voltage is applied. A resistance value between the second conductive member and a developer layer of the developer carried on the developer carrying member is greater than a resistance value between the first conductive member and a surface of the image bearing member.
摘要翻译： 图像形成装置包括图像承载部件和静电图像形成装置，其适于在图像承载部件上形成静电图像，并且包括与图像承载部件接触以使图像承载部件带电的带电部件。 充电构件包括施加电压的第一导电构件和与图像承载构件协作以在其间形成辊隙的显影剂承载构件，并且适于将显影剂携带到辊隙并且与显影剂显影静电图像。 充电构件还包括施加电压的第二导电构件。 承载在显影剂承载构件上的第二导电构件和显影剂层之间的电阻值大于第一导电构件和图像承载构件的表面之间的电阻值。
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