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公开(公告)号：US6009299A
公开(公告)日：1999-12-28
申请号：US224298
申请日：1998-12-31
CPC分类号： G03G9/093 , G03G13/20 , G03G9/09307 , G03G9/0935
摘要： A developing roller rotates in contact with a photoreceptor drum. The developing roller controls a development thorough the formation of a toner layer 50 .mu.m or less in thickness on an outer surface. The photoreceptor drum transfers a toner image formed on the outer surface by the controlled-development onto a medium. A fixation device heat-treats and fixes the toner image transferred onto the medium. A toner for the developing treatment comprises a resin having a Tg of 75.degree. C. or more as at least part of it.
摘要翻译： 显影辊与感光鼓接触旋转。 显影辊控制在外表面上形成厚度为50μm或更小的调色剂层的显影。 感光鼓通过受控显影将形成在外表面上的调色剂图像转印到介质上。 固定装置热处理并固定转印到介质上的调色剂图像。 用于显影处理的调色剂包括Tg至少为其一部分的Tg为75℃或更高的树脂。
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2.发明授权Developing unit for an electrophotographic printer employing a supply roller for transferring toner to a developing roller 失效用于使用供给辊将电影转印到显影辊上的电子照相打印机的显影单元
公开(公告)号：US5839021A
公开(公告)日：1998-11-17
申请号：US897273
申请日：1997-07-21
CPC分类号： G03G15/0808 , G03G2215/0617
摘要： The developing unit of an electrostatic printer is designed to avoid under-development of the bottom part of a dark latent image due to a reduction in recycled toner. This can be accomplished by providing the developing unit with one developing roller and at least two supply rollers. Alternatively, the developing unit has just one supply roller, but the rate at which toner is transferred from the supply roller to the developing roller can be switched. As another alternative, the supply roller and developing roller are designed to turn slowly enough that development of an entire page is completely developed before reaching the point where under-development would begin.
摘要翻译： 静电打印机的显影单元被设计成避免由于再循环调色剂的减少导致的暗色潜像的底部的欠展开。 这可以通过为显影单元提供一个显影辊和至少两个供给辊来实现。 或者，显影单元仅具有一个供应辊，但是可以切换调色剂从供给辊传递到显影辊的速率。 作为另一个替代方案，供应辊和显影辊被设计成缓慢地转动，使得整个页面的开发在到达开发不足的点之前被完全开发。
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公开(公告)号：US06397021B2
公开(公告)日：2002-05-28
申请号：US09797030
申请日：2001-02-28
IPC分类号： G03B1520
CPC分类号： G03G15/205
摘要： An image forming apparatus has a fixing unit. A heat roller heats a toner image on a print medium to fuse the toner image. A first temperature detector is in contact with a longitudinal end portion of the heat roller, and generates a first temperature data. A second temperature detector opposes the heat roller and is in proximity to a substantially middle portion of the heat roller. The second temperature detector generates a second temperature data. Depending on the first temperature data and the second temperature data, a controller performs temperature control either in a first mode where the heater is energized such that the first temperature data is equal to a first target value, or in a second mode where the heater is energized such that second temperature data is equal to a second target value.
摘要翻译： 图像形成装置具有定影单元。 加热辊加热打印介质上的调色剂图像以使调色剂图像熔合。 第一温度检测器与加热辊的纵向端部接触，并产生第一温度数据。 第二温度检测器与加热辊相对并且靠近加热辊的大致中间部分。 第二温度检测器产生第二温度数据。 根据第一温度数据和第二温度数据，控制器在加热器通电的第一模式中执行温度控制，使得第一温度数据等于第一目标值，或者在加热器为 使得第二温度数据等于第二目标值。
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4.发明授权Method for correcting bidirectional printing alignment of a serial dot printer 失效串行点式打印机的双向打印对准校正方法
公开(公告)号：US4818129A
公开(公告)日：1989-04-04
申请号：US103824
申请日：1987-10-02
CPC分类号： B41J2/5056 , B41J19/145 , G05B19/40 , G05B19/408 , G05B2219/36088 , G05B2219/45187
摘要： In a method for operating a serial dot matrix printer having a print head that is reciprocated along a first direction and stopped for performing bi-directional printing on a medium that is moved in a second direction orthogonal to the first direction, correction amounts for correcting the bi-directional printing alignment are stored in a memory device. The desire correction amount is then selected and stored in a battery-backed-up memory. The bi-directional printing then is performed using the desired correction amount stored in the battery-backed-up memory.
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公开(公告)号：US4738552A
公开(公告)日：1988-04-19
申请号：US837282
申请日：1986-03-06
申请人： Hiroshi Kikuchi , Yukio Ota , Toshihiro Nakano , Takashi Itaya , Shyoichi Watanabe , Kuniharu Hayashi
发明人： Hiroshi Kikuchi , Yukio Ota , Toshihiro Nakano , Takashi Itaya , Shyoichi Watanabe , Kuniharu Hayashi
IPC分类号： B41J25/308 , B41J11/20
CPC分类号： B41J25/3082
摘要： A printer includes a platen having a longitudinal axis and a printing head mounted in opposition to the platen. The guide shaft is mounted to extend parallel to the axis of the platen. A carriage supports the printing head and includes a carriage frame mounted on the guide shaft for movement axially therealong and for movement rotatably thereabout and a base plate having a first end integral with the carriage frame and a second end directed away therefrom. A guide plate is fixed at a position below the second end of the base plate and extends parallel to the guide shaft. A parallel link mechanism includes a fixing member attached to a lower surface of the second end of the base plate and a slider memebr connected to the fixing member. The slider member has a slot within which fits the guide plate, such that movement of the carriage axially of the guide shaft causes the parallel link mechanism and the second end of the base plate to be guided by the guide plate. An adjusting screw is threaded through a hole in the second end of the base plate and has a tip end in engagement with the slider member. Thus, upon rotation of the adjusting screw the slider member and the second end of the base plate are moved relatively toward or away from each other, thereby moving the carriage and the printing head rotatably about the guide shaft to increase or decrease the platen gap. A flexible member connects the slider member to the fixing member to prevent the slider member from becoming inclined relative to the guide plate.
摘要翻译： 打印机包括具有纵向轴的压板和与压板相对安装的打印头。 引导轴安装成平行于压板的轴线延伸。 托架支撑打印头，并且包括安装在引导轴上以便沿其轴向运动并可在其周围可旋转运动的托架框架，以及具有与托架框架一体的第一端和从其移开的第二端的底板。 引导板固定在基板的第二端下方的位置，并平行于引导轴延伸。 平行连杆机构包括附接到基板的第二端的下表面的固定构件和连接到固定构件的滑块构件。 滑动构件具有狭槽，该狭槽内配合引导板，使得滑架的轴向运动引导平行连杆机构，并且基板的第二端由引导板引导。 调节螺钉穿过基板的第二端的孔，并且具有与滑块构件接合的尖端。 因此，当调节螺钉旋转时，滑动构件和基板的第二端相对移动或相互移动，从而使托架和打印头围绕导向轴可旋转地移动以增加或减小压板间隙。 柔性构件将滑动构件连接到固定构件，以防止滑动构件相对于导向板倾斜。
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6.发明授权Method and apparatus for forming an electrostatic latent image with toner recovery 失效用调色剂回收形成静电潜像的方法和装置
公开(公告)号：US5943533A
公开(公告)日：1999-08-24
申请号：US24602
申请日：1998-02-17
申请人： Syuichiro Ogata , Yoshitatsu Okiyama , Kazuyoshi Yoshida , Toru Ishihara , Kuniharu Hayashi , Hiroyuki Yajima , Mikio Yamamoto , Takashi Itaya , Masanori Maekawa , Kazuhiko Nagaoka
发明人： Syuichiro Ogata , Yoshitatsu Okiyama , Kazuyoshi Yoshida , Toru Ishihara , Kuniharu Hayashi , Hiroyuki Yajima , Mikio Yamamoto , Takashi Itaya , Masanori Maekawa , Kazuhiko Nagaoka
IPC分类号： G03G15/02
CPC分类号： G03G15/0225
摘要： A method of forming an electrostatic latent image includes printing operation and toner recovering operation. The printing operation includes charging, forming an electrostatic latent image, developing, and transferring operations. The toner recovering operation includes the step of charging the photosensitive drum in timed relation to the rotation of the photosensitive drum after printing operation so that reversely charged toner deposited on the charging roller migrates from the charging roller to the photosensitive drum. The toner migrated from the charging roller to the photosensitive drum is recovered into a developer. An apparatus for forming an image includes a charging roller, photosensitive drum, developing roller, and transfer roller. The apparatus further includes a reversely-charged-toner recovering device which causes the photosensitive drum to be charged in timed relation to the rotation of the photosensitive drum after printing operation so that the reversely charged toner deposited on the charging roller migrates to the photosensitive drum. The developer recovers the toner which has migrated to the photosensitive drum from the charging roller.
摘要翻译： 形成静电潜像的方法包括打印操作和调色剂回收操作。 打印操作包括充电，形成静电潜像，显影和转印操作。 调色剂回收操作包括以下步骤：在打印操作之后以与感光鼓的旋转定时关系的方式充电感光鼓，使得沉积在充电辊上的反向充电的调色剂从充电辊移动到感光鼓。 从充电辊迁移到感光鼓的调色剂被回收到显影剂中。 用于形成图像的装置包括充电辊，感光鼓，显影辊和转印辊。 该装置还包括一个反向充电的调色剂回收装置，其使打印操作之后使感光鼓以与感光鼓的转动成正比的方式进行充电，使得沉积在充电辊上的反向充电的调色剂迁移到感光鼓上。 显影剂从充电辊回收已经迁移到感光鼓的调色剂。
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公开(公告)号：US5702189A
公开(公告)日：1997-12-30
申请号：US356818
申请日：1994-12-15
申请人： Minoru Mizutani , Kuniharu Hayashi , Koji Aida
发明人： Minoru Mizutani , Kuniharu Hayashi , Koji Aida
CPC分类号： B41J29/12 , Y10T74/1967
摘要： In a serial printer a pinion and a rack for lateral movement of a carriage, a dislodging member with edges proximate to the rack is provided to remove any chads or other foreign matters that may be attached to the rack, as they approach the pinion with the lateral movement of the carriage. The chads or other foreign matters are prevented from being caught between the pinion and the rack, and noises and increase in the torque due to the rolling in is prevented.
摘要翻译： 在串行打印机中，小齿轮和滑架用于滑架的横向移动，提供具有靠近齿条的边缘的移动构件，以便随着它们接近小齿轮而移除可能附着到齿条上的任何小块或其它异物 滑架的横向运动。 可以防止小齿轮和齿条之间的卡子等异物被卡住，防止由于滚动引起的噪声和扭矩增加。
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公开(公告)号：US5260616A
公开(公告)日：1993-11-09
申请号：US731262
申请日：1991-07-17
CPC分类号： H02K37/14
摘要： A permanent magnet type stepping motor comprising first and second stator assemblies arranged coaxially about a longitudinal axis. Each assembly includes first and second ring-shaped stators made of magnetic material. The first ring-shaped stator has a central portion with an opening therein, an annular yoke surrounding the periphery of the central portion and a plurality of pole pieces distributed about the circumference of the opening and extending toward a plane transverse to the axis. The second ring-shaped stator has a central portion with an opening therein, an annular substantially planar yoke surrounding the periphery of the central portion and a plurality of pole pieces distributed about the circumference of the opening and extending away from the transverse plane so as to interleave with the pole pieces of the first stator. The central portion of the second stator protrudes from the plane of the yoke in a direction away from the transverse plane. A coil is interposed between the first and second ring-shaped stators and surrounds the pole pieces. The first and second stator assemblies are arranged with respect to the transverse plane so that the second ring-shaped stator of the first stator assembly is adjacent the second ring-shaped stator of the second stator assembly at the transverse plane thereby forming a gap between the protruding central portions of the second stators of the first and second stator assemblies. A permanent magnet having N and S poles distributed alternately about the outer circumference thereof is rotatably supported within the openings in the central portions of the first and second stators of the first and second stator assemblies.
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公开(公告)号：US5974277A
公开(公告)日：1999-10-26
申请号：US150880
申请日：1998-09-10
申请人： Tsutomu Yamane , Kuniharu Hayashi
发明人： Tsutomu Yamane , Kuniharu Hayashi
CPC分类号： G03G15/0225
摘要： An electrophotographic printing apparatus has two charging bodies that are held at different potentials. The first charging body makes contact with the surface of a photosensitive drum; the second charging body makes contact with the first charging body. Toner particles that have acquired an electrostatic charge opposite to their normal charge are attracted from the drum surface to the first charging body. These toner particles are then attracted from the first charging body to the second charging body, whereby the first charging body is kept clean and able to charge the surface of the photosensitive drum to a uniform potential.
摘要翻译： 电子照相打印设备具有保持在不同电位的两个充电体。 第一充电体与感光鼓的表面接触; 第二充电体与第一充电体接触。 获得与其正常电荷相反的静电电荷的调色剂颗粒从鼓表面吸引到第一充电体。 然后，这些调色剂颗粒从第一充电体吸引到第二充电体，由此第一充电体保持清洁并且能够将感光鼓的表面充电至均匀的电位。
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公开(公告)号：US4823038A
公开(公告)日：1989-04-18
申请号：US141162
申请日：1988-01-06
CPC分类号： H02K37/14
摘要： A stepping motor comprises a rotor assembly including a rotor shaft, a collar coaxially fixed to the rotor shaft, and a cylindrical permanent magnet block fixedly fitted on the collar, a yoke assembly including an inner yoke having a plurality of upper pole pieces arranged at regular angular intervals corresponding to an electrical angle of 2.pi. and a plurality of lower pole pieces arranged at regular angular intervals corresponding to an electrical angle of 2.pi., an upper outer yoke having pole pieces formed so as to extend between the upper pole pieces of the inner yoke, and a lower outer yoke having a plurality of pole pieces formed so as to extend between the lower pole pieces of the inner yoke, first and second driving coils received in a space defined by the inner yoke and the upper outer yoke and in a space defined by the inner yoke and the lower outer yoke, respectively, a base plate fixed to the upper end surface of the upper outer yoke, a flange fixed to the lower end surface of the lower outer yoke, and bearing bushes respectively provided in the central portions of the base plate and the flange to support the rotor shaft therein for rotation. The inner yoke is formed by bending the inner periphery of a single annular plate alternately in opposite directions to form the upper pole pieces and the lower pole pieces.
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