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41. 发明专利

JP2005316371A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2005316371A
公开(公告)日：2005-11-10
申请号：JP2004355933
申请日：2004-12-08
申请人： Brother Ind Ltd , ブラザー工業株式会社
发明人： FURUKAWA TOSHIRO
IPC分类号： G03G15/08 , G03G15/01 , G03G15/30 , G03G21/00 , G03G21/10
CPC分类号： G03G21/0064 , G03G2215/0106 , G03G2215/0119
摘要： PROBLEM TO BE SOLVED: To provide a means of solving the problem with a color laser printer that the developing agent used on an upstream side is reversely transferred from a medium to be transferred to a photoreceptor drum at the time of image formation and the reversely transferred developing agent gives rise to color mixing at the time of later image formation. SOLUTION: The amount of reversely transferred developing agent on the surface of a developing roller is estimated based on the operating time of the image forming apparatus, the surface area of an image, and the charging amount of developing agent. When the estimated amount of the reversely transferred developing agent reaches a predetermined value, a solid image is formed on the photoreceptor drum. By transferring the solid image onto recording paper, a conveyer belt, or an intermediate transfer belt, the reversely transferred developing agent is removed. Alternatively, by rotating the developing roller in a state in which the developing roller is separated from the photoreceptor drum, the reversely transferred developing agent on the surface of the developing roller is collected into a developing agent hopper. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决问题的方法：提供一种解决彩色激光打印机的问题的方法，在图像形成时，上游侧使用的显影剂从要传送到感光鼓的介质反向转印，反向转移的显影剂在稍后的图像形成时引起混色。解决方案：根据图像形成装置的操作时间，图像的表面积和显影剂的充电量，估计显影辊表面上的反转印显影剂的量。当反向转印的显影剂的估计量达到预定值时，在感光鼓上形成实心图像。通过将固体图像转印到记录纸，输送带或中间转印带上，去除反向转印的显影剂。或者，通过在显影辊与感光鼓分离的状态下旋转显影辊，将显影辊表面上的反转印显影剂收集到显影剂料斗中。版权所有（C）2006，JPO＆NCIPI

42. 发明专利

JP2015045801A 画像形成装置有权
标题翻译：图像形成装置
公开(公告)号：JP2015045801A
公开(公告)日：2015-03-12
申请号：JP2013177812
申请日：2013-08-29
申请人：ブラザー工業株式会社 , Brother Ind Ltd
发明人： MATSUSHITA YUICHI , FURUKAWA TOSHIRO , NAKAJIMA KEIGO
IPC分类号： G03G15/00 , G03G15/02 , G03G15/06 , G03G15/08 , G03G15/16 , G03G21/00 , G03G21/08 , G03G21/14
摘要：【課題】電位低下手段の作動状態に関わらず、濃度ムラを抑えることを目的とする。【解決手段】画像形成装置は、感光体の表面に所定の作用を与える作用手段と、感光体の表面電位を低下させるための電位低下手段と、感光体の表面における画像形成領域に対応した第1部分に第1の作用(第1グリッドバイアスVg1に対応する作用)を与え、感光体の表面におけるシートの先端部分に対応した第2部分に第1の作用とは異なる大きさの第2の作用(第2グリッドバイアスVg2)を与えるように、作用手段を制御する制御手段を備える。制御手段は、電位低下手段による表面電位の低下量が所定量よりも大きい場合には(図3(c)の破線)、第2の作用に代えて、当該第2の作用と第1の作用の間の大きさの第1中間作用(中間グリッドバイアスVg3に対応する作用)を第2部分に与えるように、作用手段を制御する。【選択図】図3
摘要翻译：要解决的问题：与电位降低装置的操作状态无关地抑制浓度不均匀。图像形成装置包括：对感光体的表面施加规定动作的动作单元; 降低感光体的表面电位的电位降低装置; 以及控制装置，其控制动作装置，以对应于感光体表面上的图像形成区域的第一部分施加第一动作（对应于第一栅极偏置Vg1的动作），并施加第二动作（第二动作栅极偏压Vg2）与第一动作强度不同，对应于感光体表面上的片材的尖端部分的第二部分。当电位降低装置的表面电位降低量大于规定量（图3的（c）中的虚线）时，控制装置控制动作装置，以施加第一中间动作对应于中间网格偏置Vg3的动作），其中第二动作与第一动作之间的强度相对于第二部分，作为第二动作的替代。

43. 发明专利

JP2014145964A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2014145964A
公开(公告)日：2014-08-14
申请号：JP2013015318
申请日：2013-01-30
申请人： Brother Ind Ltd , ブラザー工業株式会社
发明人： KATO TOKUJI , FURUKAWA TOSHIRO
IPC分类号： G03G21/16
CPC分类号： G03G21/1666 , G03G21/1623 , G03G21/1832 , G03G2221/1636
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus which properly protects an exposure member, and ensures reliability for a long time.SOLUTION: In a printer 1, a developing drawer frame 57 configured so as to move between an inside position arranged in a body casing 2 and an outside position arranged outside the body casing 2 includes: an LED unit 35 configured so as to expose a photoreceptor drum 26; and a protection member 69 adapted to the LED unit 35 and fixed to the developing drawer frame 57. The LED unit 35 is configured so as to move between an exposure position for exposing the photoreceptor drum 26 and a protection position where the unit is protected by the protection member 69.
摘要翻译：要解决的问题：提供一种适当地保护曝光构件的图像形成装置，并且长时间保证可靠性。解决方案：在打印机1中，显影抽屉框架57构造成在布置在主体外壳2和设置在主体外壳2外部的外部位置包括：LED单元35，被配置为暴露感光鼓26; 以及适合于LED单元35并固定到显影抽屉框架57的保护构件69.LED单元35构造成在曝光感光鼓26的曝光位置和单元被保护的保护位置之间移动保护构件69。

44. 发明专利

JP2012226193A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2012226193A
公开(公告)日：2012-11-15
申请号：JP2011094736
申请日：2011-04-21
申请人： Brother Ind Ltd , ブラザー工業株式会社
发明人： HAYAKAWA MASAHIKO , FURUKAWA TOSHIRO , MATSUSHITA YUICHI
IPC分类号： G03G21/14 , G03G15/00 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus that forms images without the occurrence of failure on paper such as density unevenness with a simple configuration not using a transfer bias.SOLUTION: A printer 1 includes: a photosensitive drum 14 on which an electrostatic latent image is formed; A CPU 24 that determines whether or not the photosensitive drum 14 has reached the end of life; and sheet supply means 25, if the CPU 24 has determined that the photoreceptor drum 14 has reached the end of life, supplies sheets at timing when an interval between a rear end of a sheet P1 and a front end of a following sheet P2 is longer than a circumferential length of the photosensitive drum 14.
摘要翻译：要解决的问题：提供一种图像形成装置，其以不使用转印偏压的简单配置形成图像而不发生诸如浓度不均匀的纸上的故障。打印机1包括：形成有静电潜像的感光鼓14; 确定感光鼓14是否已经达到寿命的CPU 24; 和片材供给装置25，如果CPU 24已经确定感光鼓14已经到达寿命结束，则在片材P1的后端和后片材P2的前端之间的间隔更长的时刻提供片材感光鼓14的圆周长度。（C）2013，JPO＆INPIT

45. 发明专利

JP2012008302A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2012008302A
公开(公告)日：2012-01-12
申请号：JP2010143466
申请日：2010-06-24
申请人： Brother Ind Ltd , ブラザー工業株式会社
发明人： MIYAHARA KENSUKE , YASUDA TAKASHI , FURUKAWA TOSHIRO , NISHIMURA YOHEI
IPC分类号： G03G15/01 , G03G13/02 , G03G15/02 , G03G21/00
CPC分类号： G03G15/0178 , G03G15/0189 , G03G15/0194 , G03G15/0266 , G03G15/1675 , G03G15/5004
摘要： PROBLEM TO BE SOLVED: To suppress wasteful power consumption while suppressing reverse transcription in a monochrome printing.SOLUTION: In the monochrome printing, control means performs an energy saving control to make an absolute value of a charging bias, which is applied to charging means (charged wires 52WM and 52WC) corresponding to downstream-side second photosensitive drums 51M and 51C excluding an uppermost-stream-side second photosensitive drum 51Y out of the plurality of second photosensitive drums 51Y, 51M, and 51C, smaller than that in the color printing, and smaller than the absolute value of the charging bias to be applied to charging means (a charged wire 52WY) corresponding to the uppermost-stream-side second photosensitive drum 51Y.
摘要翻译：要解决的问题：在单色打印中抑制逆转录的同时抑制浪费的功耗。解决方案：在单色打印中，控制装置执行节能控制，以使得对应于下游侧第二感光鼓51M的充电装置（充电线52WM和52WC）施加充电偏压的绝对值， 51C，51C，51C以外的最上游侧第二感光鼓51Y，比彩色打印中的最上游侧第二感光鼓51Y小，并且小于充电偏压的绝对值对应于最上游侧第二感光鼓51Y的装置（充电线52WY）。版权所有（C）2012，JPO＆INPIT

46. 发明专利

JP2011232372A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2011232372A
公开(公告)日：2011-11-17
申请号：JP2010099743
申请日：2010-04-23
申请人： Brother Ind Ltd , ブラザー工業株式会社
发明人： FURUKAWA TOSHIRO
IPC分类号： G03G21/14 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To restrain degradation in image quality which can be generated due to potential irregularity occurring on a surface of a photoreceptor.SOLUTION: An image forming apparatus is composed so that images can be formed on both sides of a sheet S and includes: a rotating photoreceptor (photoreceptor drum 51) on which a developer image is formed; a transfer roller 53 to which transfer bias is applied in between the photoreceptor and transferring the developer image formed on the photoreceptor to the sheet S; and a charger 52 for charging the photoreceptor. In addition, the image forming apparatus is provided with: an image forming section for forming the image on the sheet S; a feeding mechanism 33 for feeding the sheet S to the image forming section; a reconveyance mechanism for conveying the sheet S carried out from the image forming section to the image forming section again; and a controller for controlling the timing for feeding out the sheet S by controlling an action of the feeding mechanism 33 and the reconveyance mechanism. The controller feeds out a next sheet S2 at such timing that an interval D between a rear end SB of the prior sheet S1 conveyed to the image forming section again and front end SA of the next sheet S2 is at the interval which is one rotation of the photoreceptor (circumference C) or more.
摘要翻译：要解决的问题：抑制由于感光体表面上发生的潜在不规则性而可能产生的图像质量的劣化。解决方案：图像形成装置被构成为可以在片材S的两侧形成图像，并且包括：形成有显影剂图像的旋转感光体（感光鼓51）转印辊53，转印偏压施加在感光体之间并将形成在感光体上的显影剂图像转印到纸张S上; 以及用于对感光体充电的充电器52。此外，图像形成装置设置有：用于在片材S上形成图像的图像形成部; 用于将纸张S供给到图像形成部的进给机构33; 用于将从图像形成部分执行的纸张S再次传送到图像形成部分的再传送机构; 以及控制器，用于通过控制进给机构33和再传送机构的动作来控制送出纸张S的定时。控制器输出下一个纸张S2，使得再次传送到图像形成部分的现有纸张S1的后端SB与下一张纸张S2的前端SA之间的间隔D处于感光体（圆周C）以上。版权所有（C）2012，JPO＆INPIT

47. 发明专利

JP2010128055A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2010128055A
公开(公告)日：2010-06-10
申请号：JP2008300615
申请日：2008-11-26
申请人： Brother Ind Ltd , ブラザー工業株式会社
发明人： DEGUCHI HIDEAKI , FURUKAWA TOSHIRO
IPC分类号： G03G15/16 , G03G15/00 , G03G15/01
摘要： PROBLEM TO BE SOLVED: To carry out a good image formation by suitably selecting the best condition for transfer bias according to temperature and humidity of a surrounding environment.
SOLUTION: The image forming apparatus is provided with: an image carrier (photoreceptor drum 53); a transfer member (transfer roller 74) that is provided facing the image carrier and to which transfer bias is applied; first sensors (ammeter 12, voltmeter 13) for measuring the resistance values in a prescribed section between the image carrier and the transfer member; and a transfer bias control means for applying the transfer bias to the transfer member based on the measured values of the first sensors. The transfer bias control means selects a control function which is provided beforehand based on a first resistance value that is measured by the first sensors before a recording sheet goes in between the image carrier and the transfer member and a second resistance value that is measured by the first sensors when the recording sheet goes in between the image carrier and the transfer member and determines a transfer bias target value by using the selected control function and the resistance values that are measured by the first sensors.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过根据周围环境的温度和湿度适当地选择转印偏压的最佳条件来进行良好的图像形成。图像形成装置设置有：图像载体（感光鼓53）; 传送构件（转印辊74），其设置成面向图像载体并施加转印偏压; 用于测量图像载体和转印构件之间的规定部分中的电阻值的第一传感器（电流表12，电压表13）以及转印偏压控制装置，用于基于第一传感器的测量值将转印偏压施加到转印部件。转印偏压控制装置基于在记录纸张进入图像载体和转印部件之前由第一传感器测量的第一电阻值预先提供的控制功能和由图像载体和转印部件测量的第二电阻值当记录片材进入图像载体和转印构件之间时，首先传感器，并且通过使用所选择的控制功能和由第一传感器测量的电阻值来确定转印偏压目标值。版权所有（C）2010，JPO＆INPIT

48. 发明专利

JP2010128054A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2010128054A
公开(公告)日：2010-06-10
申请号：JP2008300614
申请日：2008-11-26
申请人： Brother Ind Ltd , ブラザー工業株式会社
发明人： FURUKAWA TOSHIRO , DEGUCHI HIDEAKI
IPC分类号： G03G15/16 , G03G15/00 , G03G15/01
CPC分类号： G03G15/1675
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of quickly forming an image without providing a separate sensor used only for measuring the resistance of a recording sheet.
SOLUTION: The image forming apparatus includes an image carrier (a photoconductor drum 53); a transfer member (a transfer roller 74) provided facing the image carrier and to which a transfer bias is applied; a first sensor (an ammeter 12 and a voltmeter 13) for measuring a resistance value of a section between the image carrier and the transfer member; and a transfer bias control means. The transfer bias control means controls the transfer bias applied to the transfer member based on a first resistance value measured by the first sensor before the entry of a recording sheet between the image carrier and the transfer member and on a second resistance value measured by the first sensor during the entry of the recording sheet between the image carrier and the transfer member.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够快速形成图像而不提供仅用于测量记录片材的电阻的单独的传感器的图像形成装置。解决方案：图像形成装置包括图像载体（感光鼓53）; 设置为面向图像载体并且施加转印偏压的转印构件（转印辊74）用于测量图像载体和转印部件之间的部分的电阻值的第一传感器（电流表12和电压表13）和转印偏压控制装置。转印偏压控制装置根据由第一传感器在记录纸进入图像载体和转印元件之前测量的第一电阻值以及由第一传感器测量的第二电阻值来控制施加到转印元件的转印偏压在记录纸进入图像载体和转印部件之间的传感器。版权所有（C）2010，JPO＆INPIT

49. 发明专利

JP2010122309A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2010122309A
公开(公告)日：2010-06-03
申请号：JP2008293592
申请日：2008-11-17
申请人： Brother Ind Ltd , ブラザー工業株式会社
发明人： FURUKAWA TOSHIRO
IPC分类号： G03G15/16
CPC分类号： G03G15/166 , G03G15/0121 , G03G15/0189 , G03G15/0194 , G03G2215/0141
摘要： PROBLEM TO BE SOLVED: To improve the cleaning performance of a belt by accurately reflecting the state of the belt based on the bias of the cleaning member. SOLUTION: An image forming apparatus has a controller 100 for controlling a second bias, which is applied to the cleaning member such as a cleaning roller 12, based on a value of electric current measured by a current sensor (ammeter 18). The controller 100 controls the second bias based on the value of the current measured when a predetermined measurement range M1 of a transport belt 73 comes into contact with the cleaning member. The measurement range M1 is a range in which conditions, under which the first bias and the second bias are applied, are identical. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过基于清洁部件的偏压精确地反映皮带的状态来提高皮带的清洁性能。解决方案：图像形成装置具有控制器100，用于基于由电流传感器（电流表18）测量的电流值来控制施加到诸如清洁辊12的清洁部件的第二偏压。控制器100基于当传送带73的预定测量范围M1与清洁构件接触时所测量的电流的值来控制第二偏压。测量范围M1是施加第一偏压和第二偏压的条件相同的范围。版权所有（C）2010，JPO＆INPIT

50. 发明专利

JP2010048961A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2010048961A
公开(公告)日：2010-03-04
申请号：JP2008211976
申请日：2008-08-20
申请人： Brother Ind Ltd , ブラザー工業株式会社
发明人： FURUKAWA TOSHIRO
IPC分类号： G03G15/20 , B65H5/06 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To make the dry state of a recording medium after fixing uniform without enlarging diameters of shafts for rollers in an image forming apparatus for thermally fixing an image formed on the recording medium and then conveying the recording medium after fixing by the rollers. SOLUTION: Five sets of first paper ejecting rollers 44 and pinch rollers 45 are arranged with intervals in the direction of shafts 84, 85 and four sets of second paper ejecting rollers 46 and pinch rollers 47 are arranged with intervals in the direction of the shafts 86, 87. Furthermore, respective nip sections of the second paper ejecting rollers 46 and pinch rollers 47 are arranged in positions not overlapping any nip section of the first paper ejecting rollers 44 and pinch rollers 45 in the conveyance direction of paper 4. Although, in the paper 4 on which the toner is thermally fixed, heat is taken away by the rollers, the paper is cooled, and evaporation of water vapor is suppressed, the dry state of the paper 4 can be made uniform over the entire sheet by the arrangement of the rollers. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了使图像形成装置中用于热定影形成在记录介质上的图像然后在固定之后传送记录介质的图像形成装置中用于辊的轴的直径扩大，使得固定均匀后的记录介质的干燥状态由滚筒。解决方案：五组第一出纸辊44和夹送辊45沿轴84,85的方向间隔布置，四组第二纸排出辊46和夹送辊47沿着轴86,87。此外，第二排纸辊46和夹送辊47的各个夹持部布置在纸张4的传送方向上不与第一排纸辊44和夹送辊45的任何夹持部分重叠的位置。虽然在其中调色剂被热固定的纸4中，由辊取走热量，但是纸被冷却，并且水蒸气的蒸发被抑制，纸4的干燥状态可以在整个纸张上均匀通过辊的布置。版权所有（C）2010，JPO＆INPIT

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