公开(公告)号：US5220357A

公开(公告)日：1993-06-15

申请号：US933495

申请日：1992-08-21

申请人： Masahiko Kubo ,  Toshiaki Sagara ,  Kazuhiko Arai

发明人： Masahiko Kubo ,  Toshiaki Sagara ,  Kazuhiko Arai

IPC分类号： G03G15/01 ,  H04N1/29 ,  H04N1/405

CPC分类号： G03G15/01 ,  H04N1/29 ,  H04N1/4056

摘要： Disclosed is an image forming apparatus and method for forming a color toner image on a transparent overhead projector film, characterized in that the product of the height of the color toner image construction h and the spatial frequency 1/.lambda. is 0.036 or less. The height of the image construction h can be determined by varying the toner weight per unit area on the transparent film and the spatial frequency 1/.lambda. can be determined by varying the resolution so that h/.lambda. the is 0.036 or less. An image forming apparatus comprises an electrostatic latent image receiving member, an electrostatic latent image forming means for forming an electrostatic latent image corresponding to an image signal having a predetermined number of screen lines on the electrostatic latent image receiving member, a transfer medium detecting means for detecting the transfer medium, and a pulse width modulation means for modulating the pulse width of the image signal based on the detection result from the transfer medium detecting means.

摘要翻译： 公开了一种用于在透明高架投影仪膜上形成彩色调色剂图像的图像形成装置和方法，其特征在于，彩色调色剂图像构造h的高度和空间频率1 /λ的乘积为0.036或更小。 图像构造h的高度可以通过改变透明膜上的每单位面积的调色剂重量来确定，并且空间频率可以通过改变分辨率来确定1 /λ，使得h /λa为0.036或更小。 图像形成装置包括静电潜像接收部件，静电潜像形成装置，用于形成与静电潜像接收部件上具有预定数量的屏幕线的图像信号对应的静电潜像;转印介质检测装置， 检测转印介质，以及脉冲宽度调制装置，用于根据来自转印介质检测装置的检测结果调制图像信号的脉冲宽度。

公开(公告)号：US5215850A

公开(公告)日：1993-06-01

申请号：US801503

申请日：1991-11-27

申请人： Noriaki Tsubota ,  Masahiko Kubo ,  Kazuo Fuji ,  Akihiro Watanabe ,  Yoshihisa Kuramae

发明人： Noriaki Tsubota ,  Masahiko Kubo ,  Kazuo Fuji ,  Akihiro Watanabe ,  Yoshihisa Kuramae

IPC分类号： G03G9/087 ,  G03G9/09 ,  G03G9/097

CPC分类号： G03G9/097 ,  G03G9/08755 ,  G03G9/091 ,  G03G9/09741

摘要： The electrophotographic toner for negative charging according to the present invention is characterized in that a polyester resin is used as a fixing resin and a quaternary ammonium salt having an oxyacid anion is used as a charge-controlling assistant in combination with a charge-controlling agent for negative charging. This quaternary ammonium salt used as the assistant is incompatible with a fixing resin but dispersible therein. Therefore, the toner of the present invention provides a sharp distribution of the charge quantity, and formation of a highly charged toner having no contribution to development or a lowly charged toner causing scattering of the toner can be effectively prevented.

摘要翻译： 根据本发明的负电荷用电子照相调色剂的特征在于，使用聚酯树脂作为固定树脂，并且使用具有含氧酸阴离子的季铵盐作为电荷控制助剂与电荷控制剂 负电荷。 用作助剂的季铵盐与固定树脂不相容，但可分散在其中。 因此，本发明的调色剂提供了电荷量的急剧分布，并且可以有效地防止形成对显影无贡献的高度充电的调色剂或导致调色剂飞散的低电荷调色剂。

公开(公告)号：US5078085A

公开(公告)日：1992-01-07

申请号：US619452

申请日：1990-11-29

申请人： Kazuo Fuji ,  Kazuhisa Edahiro ,  Masahiko Kubo

发明人： Kazuo Fuji ,  Kazuhisa Edahiro ,  Masahiko Kubo

IPC分类号： G03G13/09

CPC分类号： G03G13/09

摘要： Disclosed is a developing process using a two-component type developer comprising a magnetic carrier and a toner, in which the developing conditions of the two-component type developer, that is, the composition and density of the developer in a distance between a photosensitive material drum and a developing sleeve (or a distance of a developing zone), are specified based on relations of these conditions to this distance. According to this developing process, the flowability of the developer in the developing zone is improved, and furthermore, the transferability of the toner to the photosensitive material drum is improved.