摘要:
An improved fuser includes a fuser member, a pressure member that forms a nip with the fuser member through which copy sheets pass to have images fused thereon and an air knife to assist in peeling copy sheets from the fuser member. The air knife has a device connected to it that blocks entrained airflow between the fuser and air knife to reduce fuser cooling and power loss.
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:
A fast acting fusing method and apparatus are provided for (a.) first moving a certain quantity of working liquid within a fusing heat pipe device from a heat transferring region of the fusing heat pipe device to an induction heating region of the fusing heat pipe device for maximizing liquid-to-device wall contact area within the induction heating region; (b.) using inductor heating coils to apply heat to the induction heating region of the fusing heat pipe device for heating the working liquid within the induction heating region; (c.) allowing heated vapors from the working liquid being heated within the induction heating region to move into the heat transferring region of the fusing heat pipe device for heating the heat transferring region; (d.) using a controller to compare heating of the heat transferring region of the fusing heat pipe device to a given heating value; and (e.) next moving the certain quantity of working liquid back from the induction heating region to the heat transferring region when heating of the heat transferring region of the fusing heat pipe device reaches the given heating value.
摘要:
A method for reducing gloss variation in prints, in an electrostatic printing system having a fuser for fusing sheets having marking particles thereon, the method including transporting a first sheet to the fuser; transporting a second sheet to the fuser; and abutting a trailing edge of the first sheet to a leading edge of the second sheet prior to the trailing edge of the first sheet entering the fuser.
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:
An improved fuser system especially effective for a large document type of copier is provided. The fusing system is of the heat and pressure type wherein a fuser roll is internally heated by a lamp so that the fuser surface is at a required fusing temperature. When the full width of the roll is used in a particular fusing operation, e.g. 36" wide documents are being copied, the lamp is heated to a maximum temperature. When the document copy is less than 36" and for a center registered system, the ends of the fuser roll would tend to overheat, since the copy media is absorbing heat only in the center portion. According to one aspect of the invention, a control circuit is provided to recognize that the shorter widths of the copy media are being used and to lower the lamp temperature in response thereto to prevent the fuser roll ends from overheating. A further concept is to recognize the type of media being used and to lower the lamp temperature in response to selection of copy media of different fusing characteristics.
摘要:
In a sheet transport system for a reproduction machine, the transport system defining a transport channel through which the sheet travels in a transport direction, an improvement comprises one or more plenums associated with the transport channel, each plenum connectable to an air flow supply, and one or more openings between each plenum and the transport channel. At least one of the one or more openings is arranged to direct air flowing through the plenum into the transport channel in the transport direction.
摘要:
An improved fuser includes a fuser member, a pressure member that forms a nip with the fuser member through which copy sheets pass to have images fused thereon and an air knife to assist in peeling copy sheets from the fuser member. The air knife has a device connected to it that blocks entrained airflow between the fuser and air knife to reduce fuser cooling and power loss.
摘要:
Embodiments use an apparatus comprising a media path that is adapted to transport media sheets within the printing apparatus. Fuser rolls are positioned along the media path, and the fuser rolls are adapted to fuse marking material on the media sheets as the media sheets pass the fuser rolls. A heating belt is positioned to pass a first location between the fuser rolls and to pass a second location separate from the fuser rolls. A heater is positioned in the second location, and the heater is adapted to heat the heating belt. In addition, an iso-thermalizing roller is in contact with the heating belt. In some embodiments, the elements can be positioned in any order. In other embodiments, the elements are positioned such that the heating belt passes the elements in the following order: the heater, the fuser rolls, and then the iso-thermalizing roller.
摘要:
A fusing member is formed from an evacuable inner tube with a cylindrical wall. The evacuable inner tube is inserted into an outer tube and the inner tube is pressurized to expand the inner tube such that the wall is in contact with the outer tube. An amount of a working fluid is then sealed within the inner tube at a below atmospheric pressure.