摘要:
A printing device includes: multiple marking engines that during operation place marks on output media; and, a power supply that selectively supplies selected levels of power to the marking engines for selected times so as to ready the marking engines for operation from a dormant state. Power from the power supply is selectively distributed to the multiple marking engines so that at least one of the marking engines is readied for operation prior to at least one of the other marking engines.
摘要:
An offset printing apparatus for transferring a phase change ink onto a print medium having a phase change ink component for applying a phase change ink in a phase change ink image; an imaging member for accepting the phase change ink image from the phase change ink component, and transferring the phase change ink image from the imaging member to the print medium, and a transfix pressure member positioned in association with the imaging member, wherein the print medium passes through a nip formed between the imaging member and the transfix pressure member, and wherein the imaging member exerts pressure on the transfix pressure member so as to transfer and fuse the phase change ink image from the imaging member to the print medium, and further wherein the transfix pressure member includes a substrate; an intermediate layer positioned on the substrate; and an outer layer on the intermediate layer and the outer layer has a modulus of from about 1 to about 50 MPa, a thickness of from about 0.1 to about 2 mm, and wherein the pressure exerted at the nip is from about 750 to about 4,000 psi.
摘要:
Fuser assemblies, xerographic apparatuses, and methods of fusing toner on media in xerographic apparatuses are disclosed. An embodiment of the fuser assemblies includes a fuser belt having an inner surface and an outer surface opposite the inner surface, at least a first roll and a second roll supporting the fuser belt, and a radiant heater facing the inner surface of the fuser belt. The radiant heater is adapted to emit radiant heat onto the inner surface of the fuser belt to increase the temperature of the outer surface of the fuser belt opposite the inner surface heated by the radiant heater.
摘要:
An air diffusing vacuum transport belt including a first perforated layer and a second non-perforated layer is provided for transporting image carrying substrates without vacuum belt induced image defects. The first perforated layer includes a top surface and a bottom surface, solid areas, and perforated hole areas interspersing the solid areas for directing pressurized airflow from the top surface through to the bottom surface. The air diffusing vacuum transport belt also includes a second non-perforated layer formed over the top surface of the first perforated layer and covering the solid areas and the perforated hole areas. The second non-perforated layer has an inner surface positioned over the top surface of the first perforated layer, and an outer surface for uniformly supporting substrates. The second non-perforated layer as such is porous to air for diffusing pressurized airflow from the outer surface thereof into the perforated hole areas of the first perforated layer, thereby enabling transporting of image carrying substrates without vacuum belt induced image defects.
摘要:
Fuser assemblies, xerographic apparatuses, and methods of fusing toner on media in xerographic apparatuses are disclosed. An embodiment of the fuser assemblies includes a fuser belt having an inner surface and an outer surface opposite the inner surface, at least a first roll and a second roll supporting the fuser belt, and a radiant heater facing the inner surface of the fuser belt. The radiant heater is adapted to emit radiant heat onto the inner surface of the fuser belt to increase the temperature of the outer surface of the fuser belt opposite the inner surface heated by the radiant heater.
摘要:
An energy transfer device and system includes a heat pipe and an interior coating to at least a portion of an interior surface of the heat pipe, the interior coating comprises at least one of the properties selected from chemically inert, liquid phobic, stable at high temperature, of low porosity and of low surface energy. Moreover, a manufacturing method of an energy transfer device that includes providing a heat pipe and providing an interior coating to an interior surface of at least a portion of the heat pipe, the interior coating comprising at least one of the properties selected from chemically inert, liquid phobic, stable at high temperature, of low porosity and of low surface energy.
摘要:
Methods and apparatus for performing addressable fusing and/or heating of a substrate undergoing xerographic processing are disclosed. The apparatus includes a fuser having an array of addressable heating elements in radiative communication with a substrate through a fuser roll or fuser belt. The array of addressable heating elements is operated to selectively heat portions of the substrate to achieve a desired effect on the substrate, such as changing its surface finish, or fusing unfused toner to the substrate. In the case of toner fusing, the array is operated such that substantially only an area covered by the unfused toner is heated. This eliminates the need for blanket fusing, and generally provides for greater flexibility in xerographically processing substrates. Apparatus and methods for performing two-sided selective fusing and/or heating are also disclosed.
摘要:
Disclosed herein are several embodiments to facilitate the characterization of fuser stripping performance. Recognizing that the characteristics of a substrate exiting a fusing nip are indicative of the operation of the nip and the stripping operation itself, several contact and non-contact sensing methods are described to detect or predict degraded stripping performance, thereby permitting one or more compensation techniques to be employed, or to identify the need for fuser subsystem replacement.
摘要:
A fusing system for use in a printing system is provided. In practice, a print media sheet having a size parameter value is transmitted to the fusing system along a first direction. Additionally, the print media sheet is provided with developer material prior to being delivered to the fusing system. The fusing system includes a fusing member positioned along a second direction for receiving the developed print media sheet. The second direction is substantially perpendicular to the first direction, and the fusing member is operated in accordance with a thermal profile that relates fusing temperature to the fusing member. The fusing system further includes a print media shifting control system for changing the position of the print media sheet relative to the fusing member in the second direction by a selected increment. The position changing of the print media sheet varies as a function of the size parameter value, and promotes uniformity in the thermal profile.
摘要:
In a tonerless imaging process, an inked image layer jetted on an image receptor is simultaneously transferred and fused to a recording medium. A radiation-curable material is incorporated in the image layer such that irradiation of the image layer cures the radiation-curable material therein. An ink jet printing apparatus for performing the above process is also disclosed.