公开(公告)号：US4144835A

公开(公告)日：1979-03-20

申请号：US844849

申请日：1977-10-25

申请人： Yasuji Fukase ,  Hiroo Nishide

发明人： Yasuji Fukase ,  Hiroo Nishide

IPC分类号： G03G15/20 ,  H05B1/02

CPC分类号： G03G15/205

摘要： A contact heat fixing apparatus comprising heat roll 1 having metal core 3 coated with heat resistant toner releasing material 4 on the surface thereof and provided with a heating element to the inside thereof. Temperature control circuit A comprising detection circuit 15 for the detection of the surface temperature of heat roll 1, comparison circuit 16 for comparing the level of a signal issued from said detection circuit 15 with that of a reference signal, pulse generation circuit 17 for converting the signal produced from said comparison circuit 16 into a pulse and an alternating current power source 12 whose electric power to be supplied to said heating element 11 is controlled by the signal from said pulse generation circuit, and switching circuit B for applying, to said temperature control circuit A, control signals which control the surface temperature of said heat roll 1 to set temperature T.sub.1 during a copy stand-by period, to set temperature T.sub.2 lower than said set temperature T.sub.1 during copy operation after a certain period from the start of copy, and again to set temperature T.sub.1 after another certain period from the completion of copy operation.

摘要翻译： 一种接触式热定影装置，其包括在其表面上涂覆有耐热调色剂释放材料4的金属芯3的热辊1并且在其内部设置有加热元件。 温度控制电路A，包括用于检测热辊1的表面温度的检测电路15，用于比较从所述检测电路15发出的信号的电平与参考信号的电平的比较电路16;脉冲发生电路17， 从所述比较电路16产生的脉冲信号和交流电源12，其供给所述加热元件11的电力由来自所述脉冲发生电路的信号控制;以及切换电路B，用于将所述信号施加到所述温度控制 回路A，在复制待机期间控制所述热辊1的表面温度以设定温度T1的控制信号，在从复印开始一段时间后的复印操作期间将温度T2设定为低于设定温度T1， 再次从复印操作完成一段时间后设定温度T1。

公开(公告)号：US4114021A

公开(公告)日：1978-09-12

申请号：US801678

申请日：1977-05-31

申请人： Hiroo Nishide ,  Yasuhiro Uehara

发明人： Hiroo Nishide ,  Yasuhiro Uehara

IPC分类号： G03G15/20 ,  H05B3/00 ,  H05B1/00

CPC分类号： G03G15/2064 ,  H05B3/0095

摘要： A heated roll fixing device for electrophotographic copying machines, wherein said device is provided with a first roll 4 which is coated on the surface with a heat-resistant releasing agent 2 , said first roll being adapted to contact toner images 6 on a supporting body 7 . A second roll 5 cooperating with said first roll 4 for pressure-heat-fixing the toner images to said supporting body 7 . The fixing device is characterized in that either said first roll 4 or second roll 5 but at least said first roll 4 is provided with an inner heating means 3, and an outer heating means 13 with small heat capacity is provided in a manner to surround said first roll 4 as illustrated in FIG. 4 of the drawings.

公开(公告)号：US4927725A

公开(公告)日：1990-05-22

申请号：US281375

申请日：1988-12-08

申请人： Hiroo Nishide ,  Shintaro Kaneko

发明人： Hiroo Nishide ,  Shintaro Kaneko

IPC分类号： G03G15/22 ,  G03G13/01 ,  G03G13/22

CPC分类号： G03G13/01 ,  G03G13/22

摘要： A method of making a reproduction copy of an image or a document by electrophotography wherein high print density portions of an original image are developed and transferred onto a recording medium before low print density portions of the original image are developed and transferred onto the recording medium. The original image is multiply scanned under successive, controlled conditions to produce a series of latent images, each of which represents a print density component of the original image. Each latent image is developed and transferred onto the recording medium to produce a composite print density and gradation which closely approaches the print density and gradation of the original document or a predetermined density and gradation.

摘要翻译： 通过电子照相制作图像或文档的再现副本的方法，其中原始图像的高打印浓度部分被显影并转印到原始图像的低打印浓度部分之前被转印到记录介质上并被转印到记录介质上。 原始图像在连续的受控条件下被乘法扫描，以产生一系列潜像，每个潜像表示原始图像的印刷密度分量。 将每个潜像显影并转印到记录介质上，以产生紧密接近原始文档的打印浓度和灰度或预定浓度和灰度的复合打印浓度和灰度。

公开(公告)号：US4320714A

公开(公告)日：1982-03-23

申请号：US157733

申请日：1980-06-09

申请人： Shigeru Shimazaki ,  Yasuhiro Uehara ,  Hiroo Nishide

发明人： Shigeru Shimazaki ,  Yasuhiro Uehara ,  Hiroo Nishide

IPC分类号： G03G15/20 ,  F27B9/28 ,  B05C21/00

CPC分类号： G03G15/2057 ,  Y10S101/37

摘要： A heat fixing device for use in an electrophotographic copying machine in which an electroconductive layer is provided in the surface of one of the fixing and pressure rolls for preventing charge built up upon the surface of the roll. The layer is preferably provided as an aluminum plated layer covered by a non-adhesive releasing layer made of a material such as tetrafluoroethylene or HTV or RTV silicone rubber. Provision of the electroconductive layer prevents an electric field from forming extending through a sheet carrying an image to be fixed thereby substantially entirely, eliminating any offset produced on the roll.

摘要翻译： 一种用于电子照相复印机的热定影装置，其中在一个定影辊和压辊上设置导电层，用于防止在辊表面积聚的电荷。 该层优选设置为由诸如四氟乙烯或HTV或RTV硅橡胶的材料制成的非粘合剂释放层覆盖的铝镀层。 提供导电层防止形成的电场延伸穿过载有图像的片材，从而基本上完全固定，消除了在卷上产生的任何偏移。