Abstract:
A process for manufacturing a coated wire composite including a core wire (12) having a coating layer (14) of dielectric material thereon. The process comprises the steps of:
providing a preform of dielectric coating material in a cylindrically tubular shape defining an inside diameter and an outside diameter and having a predetermined length; aligning a continuous length of said core wire (12) with the inside diameter of said preform for transporting the wire therethrough in a coaxial arrangement such that said wire enters said preform at an entrance orifice and exits said preform at an exit orifice; applying heat to said preform for melting a portion thereof in proximity to the exit interface orifice for providing molten dielectric material thereat, whereby a portion of said molten dielectric material is caused to collapse onto said core wire and bond thereto; and cooling said molten dielectric material on said core wire (12) to resolidify said dielectric material to form the coated wire composite including a core wire having a coating layer of dielectric material thereon.
Abstract:
Electroconductive fibers with electrically conductive filler suffused through or coated upon the surface of the filamentary polymer substrate and being present inside the filamentary polymer substrate as a uniformly dispersed phase adhered to the polymer substrate in an annular region located at the periphery of the filament and extending inwardly along the diameter thereof, wherein the electroconductive fibers are suitable for miniature cleaning brushes for an image forming apparatus are disclosed.
Abstract:
An electroconductive contact is formed of a pultruded member (18) that has a hollow construction. The pultruded member (18) includes a plurality of continuous electroconductive strands (10) embedded in a resin material (12). At least one end of the pultruded member (18) has laser fibrillated strands that are intended to contact a photoreceptive belt (42;Fig. 4). An alignment structure (32;Fig. 3) can be integrally formed during the pultrusion process on a surface of the pultruded member (18). The alignment structure aligns the pultruded member (18) relative to a contact. The electroconductive contact (20; Fig. 4) may also provide electrical connection between a photoreceptive belt (42) and a ground terminal (44).
Abstract:
An interlevel connector, a multilayer wiring board assembly, and method for making the same are presented. The interlevel connector includes a dielectric substrate having a plurality of through holes and a corresponding plurality of pultrusions. Each pultrusion includes a plurality of electrically conductive fibers and an electrically conductive or insulating host material carrying the plurality of fibers, each of the plurality of pultrusions being located in a respective through hole and having fibrillated portions extending from surfaces of the dielectric substrate. The interlevel connector is used in the construction of a multilayer wiring assembly in which first and second wiring boards having respective conductive portions are interconnected. The interlevel connector is located adjacent and between the first and second wiring boards, whereby the fibrillated portions of the pultrusion extending from the surfaces of the dielectric substrate contact the conductive portions of the first and second wiring boards. The wiring boards can be permanently or removably locatable adjacent the dielectric substrate.
Abstract:
An electrical brush-type surface contact (10) for use in contacting a moving electrically charged surface (16), is formed from a structure (preferably a pultrusion) including a plurality of continuous strand fibers (11) of high electrical resistance, and a thermally stable insulating component (13) between the resistive fibers. The resistive fibers are configured to form a brush extending from the insulating component for contact with the photoreceptor surface. The resistance of the fibers is sufficiently high to reduce leakage of surface charges away from the photoreceptor and to provide a high resistance between adjacent fibers. The insulating component (13), which serves to interface the carbon filaments (11) from each other and from a host polymer (12) may comprise an organic compound, such as a polyimide composition, or may comprise an inorganic compound such as Al₂O₃ or water glass, and is thermally stable below about 1000°C. The host polymer, on the other hand volatilizes rapidly and cleanly upon direct exposure to laser energy.
Abstract translation:用于接触移动的带电表面(16)的电刷式表面接触(10)由包括多个高电阻的连续绞合纤维(11)的结构(优选是拉挤成型)形成,并且 电阻纤维之间的热稳定绝缘部件(13)。 电阻纤维被构造成形成从绝缘部件延伸以与感光体表面接触的刷子。 纤维的电阻足够高以减少表面电荷远离感光体的泄漏并且在相邻纤维之间提供高电阻。 用于将碳丝(11)彼此和主体聚合物(12)相互接触的绝缘组分(13)可以包括有机化合物,例如聚酰亚胺组合物,或可以包含无机化合物如Al 2 O 3或 水玻璃,并且在约1000℃以下是热稳定的。另一方面,主体聚合物在直接暴露于激光能量时迅速且干净地挥发。
Abstract:
An electrical component is made from an electrically insulating polymer matrix (27) filled with electrically insulating fibrous filler (34) which is capable of heat conversion to electrically conducting fibrous filler (32) and has at least one continuous electrically-conductive path formed in the matrix by the in situ heat conversion of the electrically insulating fibrous filler. In a preferred embodiment, the fibrous filler is thermally stabilized polyacrylonitrile fibers, and the conductive path is formed by in situ heat-converted thermally-stabilized polyacrylonitrile fibers which have been converted by directing a laser beam through a mask having a predetermined pattern to melt the polymer and to convert the thermally-stabilized polyacrylonitrile fibers into their conductive form.
Abstract:
In accordance with the invention, there are temperature sensing and temperature control devices and methods of making them. The temperature sensing and control devices can include a composite member, the composite member including a non-metallic binder material, and one or more non-metallic, electrically conductive fibers disposed in the non-metallic binder material. The temperature sensing and control devices can also include a plurality of contacts disposed on the one or more non-metallic, electrically conductive fibers, wherein the composite member has a substantially continuous decrease in electrical resistance with an increase in temperature.
Abstract:
A light-transmissive transfer belt used in the system for determining toner mass amount and methods for making the belt. A system and method, using the transparent transfer belt, is capable of determining an amount of toner mass present on a toner application surface, and the real-time adjustment of parameters controlling xerographic transfer performance in the system. The system comprises transmission-based sensors alone and in combination with reflective-based sensors.