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:
An apparatus is used with an ink jet print head in an ink jet printer. The apparatus includes a print head protector that surrounds a print head. A substantially continuous slot is provided along a perimeter of the bracket and a filter is located in the substantially continuous slot. An inlet in fluid communication with the substantially continuous slot enables a positive pressure air supply to be coupled to the inlet. The air entering the inlet flows through the filter in the slot and the filtered air flows outwardly away from the print head.
摘要:
An apparatus for maintaining a uniform temperature along its axis by increasing the heat transfer efficiency. The apparatus uses a sealed chamber containing a substantially pure working fluid in a two phase (liquid and vapor) condition. The vaporization and condensation of the fluid increases the heat transfer efficiency and tends to equalize temperature gradients in a body in contact with the apparatus. The apparatus is utilized in various locations in an electrophotographic printing machine and can be used as a pressure roll for a heat and pressure fuser, a support or drive roll for a photoreceptive member, a support member for a photoreceptor and a heat sink for a developer housing.
摘要:
A pre-heater system and adapted to be used on an electrostatic marking apparatus for improving gloss on media having marking thereon at a location in the apparatus prior to a conventional fuser roll assembly or station, the system including a primary heater adapted to blow pressurized hot air into a surface of an image receiving media in order to substantially dispense hot air throughout an entire paper or media surface; and a preheat media transport for transporting media from the location in the apparatus prior to the conventional fuser roll assembly or station through the primary heater, the preheat media transport includes means for maintaining the preheat media transport at a substantially uniform predefined temperature.
摘要:
According to aspects of the embodiments, there is provided a method of optimizing an electro-photographic reproduction machine having a fusing subsystem and an air knife. The methods acquire at least one electro-photographic reproduction machine objective and media characteristic; and the acquired objective and characteristic are used to determine values for the pressurized air emitted from the air knife, the position of the air knife, and the rotation of the air knife relative to a fuse roll in the fusing subsystem. The methods further disclose acquiring the leading edge of the media being stripped and then using the beam strength of the media to assist in stripping the body of the sheet. The air knife can be controlled by a controller or a processor based on determined optimization parameter values that relate to objectives and media characteristics.
摘要:
A pre-heater system and adapted to be used on an electrostatic marking apparatus for improving gloss on media having marking thereon at a location in the apparatus prior to a conventional fuser roll assembly or station, the system including a primary heater adapted to blow pressurized hot air into a surface of an image receiving media in order to substantially dispense hot air throughout an entire paper or media surface; and a preheat media transport for transporting media from the location in the apparatus prior to the conventional fuser roll assembly or station through the primary heater, the preheat media transport includes means for maintaining the preheat media transport at a substantially uniform predefined temperature.
摘要:
An apparatus in an ink jet printer reduces the risk of clogged nozzles in ink jet printing machines by providing a negative pressure area in the vicinity of a localized high shear stress region that is located about a print head perimeter. The apparatus includes a print head protector substantially surrounds a print head, the protector having a first substantially continuous slot along a portion of a length of the protector that is upstream of the print head and a second substantially continuous slot along a portion of a length of the protector that is upstream of the first substantially continuous slot, an inlet in fluid communication with the first substantially continuous slot, the inlet enables a positive pressure air supply to be coupled to the first substantially continuous slot so air entering the inlet flows through the first slot to displace debris from media approaching the print head, and an outlet in fluid communication with the second substantially continuous slot, the outlet enables a negative pressure source to be coupled to the second substantially continuous slot so displaced debris flows into the second substantially continuous slot and out through the outlet for removal from the ink printing machine in which the print head is located.
摘要:
Provided are vacuum transport systems, methods of making them and methods of transporting one or more objects. In accordance with various embodiments, there is a vacuum transport system including a vacuum plenum and one or more transport members configured to rotate around the vacuum plenum and wherein at least one of the one or more transport members can include a substrate, the substrate including a plurality of holes extending from a first side proximate to the vacuum plenum to a second side proximate to an object, wherein a surface of the second side comprises a textured surface having an average roughness Ra of about 2 μm to about 100 μm.
摘要:
Provided are vacuum transport systems, methods of making them and methods of transporting one or more objects. In accordance with various embodiments, there is a vacuum transport system including a vacuum plenum and one or more transport members configured to rotate around the vacuum plenum and wherein at least one of the one or more transport members can include a substrate, the substrate including a plurality of holes extending from a first side proximate to the vacuum plenum to a second side proximate to an object, wherein a surface of the second side comprises a textured surface having an average roughness Ra of about 2 μm to about 100 μm.