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1. 发明授权

US4977437A Method and apparatus for performing pressure developement with a pair of pressurizing rollers 失效
标题翻译：用一对加压辊进行压力显影的方法和装置
公开(公告)号：US4977437A
公开(公告)日：1990-12-11
申请号：US472180
申请日：1990-01-30
申请人： Shin Asai , Michitoshi Akao , Tokunori Katoh , Kenji Sakakibara , Takesi Izaki , Hiroshi Morisaki
发明人： Shin Asai , Michitoshi Akao , Tokunori Katoh , Kenji Sakakibara , Takesi Izaki , Hiroshi Morisaki
IPC分类号： G03F7/00
CPC分类号： G03F7/0022 , G03B2227/325
摘要： An image recording apparatus for recording an image of an original on a developer sheet with the use of a microcapsule, in which the developer sheet and the microcapsule sheet having a surface coated with immense number of photosensitive and pressure-rupturable microcapsules are subjected to pressure development by a pair of pressurizing rollers. To ensure that the pressure development is performed under the condition where the developer sheet and the microcapsule sheet are superposed one on the other, the nip and retract timings of the pressurizing rollers are determined properly according to the present invention. For example, the developer sheet is conveyed at a speed asynchronous with the microcapsule conveying speed and the conveyance of the developer sheet is stopped after its leading edge is introduced between the rollers held in spaced apart condition. The rollers are brought to the nip position to thereby start the pressure development when the exposure start line on the microcapsule sheet is in alignment with the leading end of the developer sheet. The retract timing is determined, for example, depending upon the size of the developer sheet.

2. 发明授权

US5045763A Motor-control device for image forming apparatus 失效
标题翻译：图像形成装置的电动机控制装置
公开(公告)号：US5045763A
公开(公告)日：1991-09-03
申请号：US470311
申请日：1990-01-25
申请人： Masanari Kobayashi , Michitoshi Akao , Kenji Sakakibara , Takesi Izaki , Tokunori Katoh , Hiroshi Morisaki
发明人： Masanari Kobayashi , Michitoshi Akao , Kenji Sakakibara , Takesi Izaki , Tokunori Katoh , Hiroshi Morisaki
IPC分类号： G03B27/32 , G03F7/00
CPC分类号： G03B27/32 , G03F7/0022 , G03B2227/325
摘要： Motor-control device for an image forming apparatus includes a motor, an encoder, a microcomputer, and a driving circuit. The encoder generates a pulse signal in response to rotation of the motor. The microcomputer includes a CPU, a RAM and a ROM. The CPU detects actual rotational speed of the motor based upon the pulse signal generated by the encoder. The CPU cyclically provides a driving signal by comparing the actual rotational speed with a predetermined target rotational speed of the motor. An operating cycle is proportional to a cycle of the pulse signal generated by the encoder. The driving circuit drives the motor based upon the driving signal provided by the CPU. The CPU determines the operating cycle based upon the predetermined target rotational speed. The CPU also determines whether the motor condition is normal or abnormal by comparing the driving signal with a predetermined reference driving signal.
摘要翻译：用于图像形成装置的电动机控制装置包括电动机，编码器，微型计算机和驱动电路。编码器响应于电机的旋转而产生脉冲信号。微型计算机包括CPU，RAM和ROM。 CPU根据编码器产生的脉冲信号检测电机的实际转速。 CPU通过将实际转速与电动机的预定目标转速进行比较来循环地提供驱动信号。操作周期与由编码器产生的脉冲信号的周期成比例。驱动电路基于CPU提供的驱动信号来驱动电动机。 CPU基于预定的目标转速来确定操作周期。 CPU还通过将驱动信号与预定的参考驱动信号进行比较来确定电动机状况是正常还是异常。

3. 发明授权

US5121156A Apparatus for detecting the proper functioning of a thermal fixing unit in an image forming apparatus 失效
标题翻译：用于检测图像形成装置中的热定影单元的正常功能的装置
公开(公告)号：US5121156A
公开(公告)日：1992-06-09
申请号：US750741
申请日：1991-08-21
申请人： Kenji Sakakibara , Michitoshi Akao , Tokunori Katoh , Hiroshi Morisaki , Takesi Izaki
发明人： Kenji Sakakibara , Michitoshi Akao , Tokunori Katoh , Hiroshi Morisaki , Takesi Izaki
IPC分类号： G03D13/00 , G03B27/32 , G03F7/00 , G03G15/20
CPC分类号： G03B27/32 , G03F7/0022 , G03G15/2003 , G03B2227/325
摘要： An image forming apparatus has a thermal fixing unit which includes a heater to thermally fix an image on a recording medium. The temperature in the apparatus goes down when a replaceable unit is exchanged. A temperature sensor detects the reduction in temperature. A status sensor detects an exchanging state in which the replaceable unit is exchanged and outputs a detection signal indicating the exchanging state. A CPU judges that the heater is properly operating even if the temperature signal indicates the reduction in temperature when the detection signal is outputted.
摘要翻译：图像形成装置具有热定影单元，该热定影单元包括用于将图像热定影在记录介质上的加热器。当更换单元更换时，设备中的温度下降。温度传感器检测温度的降低。状态传感器检测交换状态，在该交换状态下可替换单元被交换，并输出指示交换状态的检测信号。即使温度信号表示输出检测信号时的温度降低，CPU判断加热器正常工作。

4. 发明授权

US4872032A Image fixing device 失效
标题翻译：图像定影装置
公开(公告)号：US4872032A
公开(公告)日：1989-10-03
申请号：US157478
申请日：1988-02-17
申请人： Satoshi Watanabe , Hiroto Sugahara , Takesi Izaki
发明人： Satoshi Watanabe , Hiroto Sugahara , Takesi Izaki
IPC分类号： G03F7/00 , G03G15/20
CPC分类号： G03G15/2092 , G03F7/0032 , G03B2227/325
摘要： An image fixing device comprises a supporting platform for supporting thereon a recording sheet on which a provisional image is formed, one or more of rollers adapted to roll over the surface of the recording sheet in a direction substantially transversely of a paper feeding direction, and a resilient member for applying a downward force to the rollers to thereby apply pressure to the surface of said recording medium for fixing the provisional image under pressure. The rollers are connected to an arm rotating or swinging about a shaft extending vertically with respect to the platform. The swinging amplitude may be adjusted to become applicable to recording sheets of different width. The resilient member may be a coil spring coiled around the shaft in such manner as to apply a downward directing force to the rollers. Alternatively, the resilient member may be a shaft spring which comprises the rotating or swinging arm.
摘要翻译：图像定影装置包括：支撑平台，用于在其上支撑形成有临时图像的记录纸，一个或多个辊适于在基本横向于送纸方向的方向上滚动记录纸的表面;以及用于向辊施加向下的力，从而向所述记录介质的表面施加压力，以在压力下固定临时图像。辊子连接到围绕相对于平台垂直延伸的轴线旋转或摆动的臂。可以调节摆动幅度以适用于记录不同宽度的纸张。弹性构件可以是以这样的方式围绕轴卷绕的螺旋弹簧，以向辊施加向下的引导力。或者，弹性构件可以是包括旋转臂或摆臂的轴弹簧。

5. 发明授权

US4789877A Pressing device 失效
标题翻译：按压装置
公开(公告)号：US4789877A
公开(公告)日：1988-12-06
申请号：US107296
申请日：1987-10-09
申请人： Takesi Izaki
发明人： Takesi Izaki
IPC分类号： G03D13/00 , G03F7/00 , G03G15/08 , G03G15/10 , G03G15/20
CPC分类号： G03F7/0027 , G03G15/10 , G03G15/2092
摘要： A pressing device for pressing a sheet-shaped subject such as a recording sheet on which an image is formed by toners or an optical latent image is formed to be fixed or developed is disclosed.The disclosed pressing device comprises a pair of pressing rollers, between which the sheet-shaped subject is passed, one of the pressing rollers being arranged such that a rotary axis thereof crosses a feeding direction of the sheet-shaped subject at right angles while the other one of the pressing rollers being arranged such that a rotary axis thereof crosses the rotary axis of the one of the rollers at a certain angle; and means for supporting the other one of the rollers to be moved in the axial direction thereof when it is driven to rotate in contact with the one of the rollers being rotating.
摘要翻译：公开了一种按压装置，用于按压其上形成有图像的记录片材的片状物体，通过调色剂或光学潜像形成固定或显影。所公开的按压装置包括一对加压辊，片状物体通过该压辊之间，其中一个按压辊被布置为使得其旋转轴线以直角与片状物体的进给方向交叉，而另一个其中一个压辊布置成使得其旋转轴线以一定角度与一个辊子的旋转轴线交叉; 以及用于支撑另一个辊子在被驱动旋转以与所转动的一个辊旋转时沿轴向移动的装置。

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