利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

34 条记录 (耗时 0.03 秒)

    Image forming apparatus
    1.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号：US07912389B2

    公开(公告)日：2011-03-22

    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： G03G15/08

    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 .

    摘要翻译： 图像形成装置，其中满足以下公式：0.22≤（M / S）L≤0.4，（QM）L = Vc（Lt2ε0εt + Ldεεεε）×（MS ）L（Dt·最大 - Dt 0.1）{λ×（MS）L-0.1}（Lt2ε0εt + Ldε0εd）×（MS）L 500≤α＆bgr; ≤（Dt·最大 - Dt 0.1）{λ×（M S）L -0.1}（Lt2ε0εt + Ld∈0εd）×（M S）L 150α＆bgr; ≥（Dt·最大 - Dt 0.1）{λ×（MS）L-0.1} 150其中（M / S）L：感光鼓的最大浓度图像部分中的调色剂承载量（Q / M）L ：最大密度部分中的调色剂的平均电荷量，Vc：显影偏压的DC分量与最大浓度部分之间的电位差的绝对值，Lt：最大密度部分的调色剂层厚度， Ld：鼓厚度，t：调色剂层的相对介电常数，e：鼓的相对介电常数; e：真空介电常数Dtmax：最大密度图像部分的透射密度 固定后的纸张，Dt0.1：固定后纸张上的调色剂承载量为0.1mg / cm 2时在纸张上的图像中的透射密度，λ：调色剂的转印效率，α=（Dt + max - Dt 0.1）{λ×（MS）L-0.1}，和ü＆bgr; = 1 /（Q / M）L。

    IMAGE FORMING APPARATUS
    2.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号：US20100209147A1

    公开(公告)日：2010-08-19

    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

    IPC分类号： G03G15/09

    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;∈。

    Image forming apparatus
    4.
    发明授权
    Image forming apparatus 有权

    公开(公告)号：US07471909B2

    公开(公告)日：2008-12-30

    申请号：US11532670

    申请日：2006-09-18

    申请人： Manami Haraguchi ,  Kenta Kubo ,  Takeshi Yamamoto

    发明人： Manami Haraguchi ,  Kenta Kubo ,  Takeshi Yamamoto

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0813 ,  G03G5/047 ,  G03G5/08214 ,  G03G15/5037 ,  G03G15/5041 ,  G03G15/751 ,  G03G2215/0634

    摘要： An image forming apparatus including: an image bearing member having a photoconductive layer of a capacitance per unit area of 1.7×10−6 (F/m2) or more; and a developing device having a developer carrying member to which development voltage is applied for developing a latent image to form a toner image on the image bearing member, wherein the following expression is satisfied:  Q M  ≥ 0.95 × Vcont ( M S ) × ( L t 2 ⁢ ɛ 0 ⁢ ɛ t + Ld ɛ 0 ⁢ ɛ d ) where Q/M (C/g): an electric charge quantity per unit weight of the toner image, Vcont: a potential difference between a surface potential of the image bearing member and a direct current component of the development voltage, M/S (g/m2): a toner weight per unit area of the maximum density portion, Lt (m): a toner layer thickness in the maximum density portion, Ld (m): a photoconductive layer thickness, εt: a relative permittivity of the toner layer, εd: a relative permittivity of the photoconductive layer, and ε0 (F/m): a vacuum permittivity.

    Image forming apparatus generating electrostatic forces in first and second directions with a predetermined duty ratio
    6.
    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

    IPC分类号： G03G15/09 ,  G03G15/08 ,  G03G15/06

    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;∈。

    Image forming apparatus including a developer bearing member with an alternate electric field being applied thereto
    8.
    发明授权
    Image forming apparatus including a developer bearing member with an alternate electric field being applied thereto 有权
    图像形成装置包括施加有交替电场的显影剂承载部件

    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