公开(公告)号：US3921571A

公开(公告)日：1975-11-25

申请号：US48204074

申请日：1974-06-24

Applicant: ITEK CORP

Inventor： MOORE ROBERT A ,  SULLIVAN DANIEL J

IPC: G03G15/08 ,  G03G15/16

CPC classification number: G03G15/0801

Abstract: Electrophotographic copying apparatus having a multiple development capability for more completely developing and, hence, improving the quality of images which contain extended solid areas. This multiple development capability is attained by designing the development station in such a manner that the latent electrostatic image to be developed and the developer mixture will move through the development station at a substantially identical velocity as distinguished from conventional systems in which the developer passes through the development station much faster than the image. By matching the velocities of the image and the developer, degradation of the developed, or partially developed, image by the rubbing or sweeping of the carrier beads across the image will be substantially eliminated, and, accordingly, multiple development becomes possible. The substantial matching of velocities is preferably accomplished by significantly reducing the width of the gap between the latent image bearing medium and the development plate through which the developer falls. This increases the density of developer in the gap and the degree of developer agitation and, hence, causes it to fall much slower while still ensuring an adequate supply for effective development of all areas of the image. With a system designed in this way, copies having a quality equal or superior to those obtainable with conventional systems can be achieved with a single development step and at speeds comparable to those available in todays high speed machines. When, however, the image to be developed contains large extended solid areas, any needed number of additional development cycles can be selectively carried out to better develop such images and, hence, provide superior quality copies.

Abstract translation: 具有多重显影能力的电子照相复印装置，用于更完全地显影，并因此提高含有扩展固体区域的图像的质量。 这种多重显影能力是通过以这样的方式设计开发站来实现的，即，待显影的静电潜像和显影剂混合物将以与传统的显影剂通过 开发站比图像快得多。 通过匹配图像和显影剂的速度，将基本上消除通过载体珠子穿过图像的摩擦或扫掠而显影或部分显影的图像的劣化，并且相应地，可以进行多次显影。 速度的实质匹配优选通过显着减小潜像承载介质和显影剂下降的显影板之间的间隙的宽度来实现。 这增加了间隙中的显影剂的密度和显影剂搅拌的程度，因此导致其下降得更慢，同时仍然确保足够的供应以有效地显现图像的所有区域。 通过以这种方式设计的系统，可以通过单个开发步骤并且以与当今高速机器中可用的速度相当的速度来实现具有与常规系统可获得的质量相等或优于其质量的复印件。 然而，当要开发的图像包含大的扩展固体区域时，可以选择性地执行任何所需数量的附加开发周期以更好地开发这样的图像，并且因此提供优质的拷贝。

公开(公告)号：US3923392A

公开(公告)日：1975-12-02

申请号：US42961774

申请日：1974-01-02

Applicant: ITEK CORP

Inventor： BUCHAN WILLIAM R ,  GENTHE JAMES E ,  MAYER EDWARD F ,  MOORE ROBERT A

IPC: G03G15/08 ,  G03G15/16 ,  G03G15/20 ,  G03G15/22 ,  G03G15/00

CPC classification number: G03G15/161 ,  G03G15/0801 ,  G03G15/1605

Abstract: An electrophotographic copier is disclosed having a rotatable photoconductive drum, means to apply a uniform electrostatic charge pattern thereto, means to expose the uniform charge pattern to a light image of an original, and unique development, transfer and fusing systems. The development system is a high efficiency development system which increases the radial velocity components of developer over that normally associated with cascade development. The transfer and fusing system includes an elastomeric transfer belt, preferably having a low heat capacity and being formed from a silicone elastomer, operating in combination with a radiant fuser and a paper transport system which provides increased thermal efficiency. These systems interrelate to provide a copier which is compact, high speed, produces excellent quality copies and consumes lower amounts of power than are normally associated with high speed copiers.

Abstract translation: 公开了一种电子照相复印机，其具有可旋转的感光鼓，用于向其施加均匀静电荷图案的装置，用于将均匀电荷图案暴露于原始图像的光图像，以及独特的显影，转印和融合系统。 开发系统是一种高效率开发系统，它可以增加显影剂的径向速度分量，而这通常与级联开发相关。 转移和定影系统包括优选具有低热容量的弹性体转移带，并且由与提供增加的热效率的辐射定影器和纸张输送系统结合操作的硅氧烷弹性体形成。 这些系统相互关联以提供紧凑，高速度的复印机，产生优质的副本并且消耗比通常与高速复印机相关的更低的功率。

公开(公告)号：US3922520A

公开(公告)日：1975-11-25

申请号：US44328674

申请日：1974-02-19

Applicant: ITEK CORP

Inventor： MOORE ROBERT A

IPC: G03G15/20 ,  H05B1/00

CPC classification number: G03G15/2007

Abstract: Radiant energy heater for fusing a toner powder image onto the surface of an image bearing support member in electrophotographic copiers. The heater comprises a housing which supports both a conventional active radiant energy heating element and a passive radiant energy heating element such as a high heat capacity insulator material. When the copier is in a stand-by mode, the housing is closed and the active heating element is energized to maintain it and the insulator material in a fusing condition. To fuse an image, the housing is opened to direct heat to an image bearing medium transported thereacross from both the active heating element and the insulator. In this way, the insulator provides a passive source of radiant energy to initially supplement the active heating element until it is able to supply a sufficient amount of uniform heat energy to effectively fuse the image alone. The system thus allows the first developed electrophotographic powder image of a copying operation to be transported beneath the heater immediately while, at the same time, avoiding the need for excessive amounts of power that would otherwise be required to bring the active heating elements to a stable heating condition rapidly.

Abstract translation: 辐射能量加热器，用于将调色剂粉末图像定影在电子照相复印机中的图像承载支撑构件的表面上。 加热器包括一个支承传统的有源辐射能量加热元件和诸如高热容绝缘材料的被动辐射能量加热元件的壳体。 当复印机处于待机模式时，壳体被关闭，并且有源加热元件被通电以保持其并且绝缘体材料处于熔化状态。 为了熔化图像，打开壳体以将热量引导到从主动加热元件和绝缘体两者传送的图像承载介质。 以这种方式，绝缘体提供辐射能量的无源源来初始补充主动加热元件，直到其能够提供足够量的均匀热能以有效地熔化图像为止。 因此，该系统允许第一显影的复印操作的电子照相粉末图像在加热器的正下方传送，同时避免需要过多的功率，否则将使活动加热元件达到稳定 加热条件迅速。

公开(公告)号：US3893761A

公开(公告)日：1975-07-08

申请号：US40369673

申请日：1973-10-04

Applicant: ITEK CORP

Inventor： BUCHAN WILLIAM R ,  MOORE ROBERT A

IPC: G03G15/16 ,  G03G15/20 ,  G03G15/22

CPC classification number: G03G15/2003 ,  G03G15/1605

Abstract: Apparatus is disclosed for transferring non-fused xerographic toner images from a first support material, such as a photoconductive insulating surface, to a second support material, such as paper, and fusing the toner images to the second support material. Such apparatus includes an intermediate transfer member having a smooth surface of low surface free energy and a hardness of from 3 to 70 durometers. The intermediate transfer member can be, for example, a 0.1-10 mil layer of silicone rubber coated onto a polyimide support. The member can be formed into belt or drum configuration. Toner images are transferred from the first support material to the intermediate transfer member; this can be by any conventional transfer method, but pressure transfer is preferred. Next, the toner image is heated on the intermediate transfer member to at least its melting point temperature. Preferably the heating is selective, and one means of selectively heating toner is to provide radiant heating means and a belt formed from a transparent silicone rubber on a reflecting intermediate member support. After the toner is heated, second support material is brought into pressure contact with hot toner whereby toner is transferred and fused to the second support material. In preferred embodiments, a pressure applying element is used to provide a pressure pulse which has a steep rise time at the point where the intermediate transfer member and second support material come into contact. A method of transferring and fusing toner images is also disclosed.

Abstract translation: 公开了用于将非熔融静电印刷调色剂图像从第一支撑材料（例如光电导绝缘表面）转移到第二支撑材料（例如纸）并将调色剂图像定影到第二支撑材料的装置。 这种设备包括具有低表面自由能的光滑表面和3至70硬度的硬度的中间转印部件。 中间转印部件可以是例如涂覆在聚酰亚胺支撑体上的0.1-10密耳的硅橡胶层。 该构件可以形成皮带或鼓形结构。 调色剂图像从第一支撑材料转移到中间转印部件; 这可以通过任何常规的转移方法，但压力转移是优选的。 接下来，将调色剂图像在中间转印部件上加热到至少其熔点温度。 优选地，加热是选择性的，并且选择性地加热调色剂的一种手段是提供辐射加热装置和由反射中间构件支撑件上的透明硅橡胶形成的带。 调色剂被加热后，第二支撑材料与热调色剂压力接触，由此调色剂被转移并熔合到第二支撑材料上。 在优选实施例中，使用压力施加元件来提供在中间转印部件和第二支撑材料接触的点处具有陡峭的上升时间的压力脉冲。