摘要:
Provided are a fluororesin tube that has substantially no scratches formed during manufacturing, and a rotary member for a fixing device, the rotary member obtained by using the fluororesin tube. The fluororesin tube is a heat-shrinkable fluororesin tube that covers a rotary member for a fixing device, such as a fixing roller or a pressure roller, to form an outermost layer of the rotary member, wherein a maximum depth of a linear scratch on a surface of the fluororesin tube is 0.8 μm or less. In one embodiment, the length of the linear scratch is 1 mm or less, and the thickness of the fluororesin tube is 100 μm or less.
摘要:
Provided are a fluororesin tube that has substantially no scratches formed during manufacturing, and a rotary member for a fixing device, the rotary member obtained by using the fluororesin tube. The fluororesin tube is a heat-shrinkable fluororesin tube that covers a rotary member for a fixing device, such as a fixing roller or a pressure roller, to form an outermost layer of the rotary member, wherein a maximum depth of a linear scratch on a surface of the fluororesin tube is 0.8 μm or less. In one embodiment, the length of the linear scratch is 1 mm or less, and the thickness of the fluororesin tube is 100 μm or less.
摘要:
Provided is a heat-shrinkable resin tube for forming a resin layer on a rotary member for an image forming part, such as a charging roller, a developing roller, or a transfer roller, a rotary member for support, or a rotary member for paper discharge in an image forming apparatus, in which a maximum depth of at least one linear scratch on a surface of the heat-shrinkable resin tube is 0.8 μm or less. A maximum length of the at least one linear scratch may be 1 mm or less, the resin tube may have a thickness of 100 μm or less, and the at least one linear scratch may extend in a direction parallel to an axial direction of the resin tube or in a direction tilted by 20° or less with respect to the axial direction.
摘要:
Provided are a method and an apparatus for producing a heat-shrinkable tube. An apparatus 100 includes a pair of pinch rollers 105 that can be moved along a feeding path of a tube 101 and that can be opened and closed with the feeding path therebetween, an air vent 104 that supplies air from an end of the tube 101 to the inside of the tube, a pair of pinch rollers 106 that is arranged closer to the air vent 104 than the pinch rollers 105 and that can be opened and closed with the feeding path therebetween, and a control unit 114 that adjusts inflation of the tube by supplying air in the tube while the pinch rollers 105 are closed and the pinch rollers 106 are opened, then closing the pinch rollers 106, and changing a distance between the pinch rollers 105 and the pinch rollers 106.
摘要:
A heat treatment apparatus includes a support sheet placed on an upper surface of a heat-treating plate. The support sheet has, formed on an upper surface thereof, projections for contacting and supporting a substrate, and a lip for contacting edge regions of the substrate. The support sheet is formed by an etching process, and therefore areas of the sheet around the projections are recessed, rather than being perforated as in the case of laser processing. These heat-treating plate and support sheet constitute a substrate support structure capable of supporting the substrate properly.
摘要:
In a process of pouring molten metal under pressure into a die cavity C through a pouring gate G, a molten metal pressure in a part of the die cavity to be filled with the molten metal later than the rest thereof, or in the vicinity of the part, is detected by a first pressure sensor S5, and a cavity backpressure in the part of the die cavity to be filled with the molten metal later than the rest thereof, or in the vicinity of the part is detected by a backpressure sensor 12. Then, a pouring rate of the molten metal is controlled in accordance with changes in the respective detected pressures.
摘要:
A trouser-fly piece serging apparatus includes a guide unit disposed upstream of a serging station and composed of a first elongate guide member extending at an angle relative to the path of movement of a trouser-fly piece being advanced by a serging unit, and a second elongate guide member extending parallel to the path of movement of the trouser-fly piece. The trouser-fly piece is guided by the first guide member into the serging station so that a trimming cutter disposed immediately upstream of the serging unit assumes a position to conform to a curvature of the leading end of a substantially arcuate trimming line passing across a corner of the leading end of the trouser-fly piece. Synchronous operation of the serging unit and the trimming cutter causes the trouser-fly piece to turn in one direction during which an arcuate corner which is trimmed by the trimming cutter and subsequently serged by the serging unit is automatically produced on the leading end of the trouser-fly piece. Then, the trouser-fly piece is guided by the second guide member, and as the trouser-fly piece is further advanced, a curved longitudinal edge of the trouser-fly piece including the trimmed arcuate corner is completely serged with an overedge or serge stitching.
摘要:
A fluororesin coating layer fusion-bonded directly to a base member or to a rubber layer on a base member can be formed by conducting heating for a significantly short time. A fluororesin-coated roller or belt that has a fluororesin coating layer with few defects and a rubber layer underneath whose thermal deterioration is suppressed is provided. The production method therefor include a step of inserting a base member or a rubber-coated base member including a base member and at least a rubber layer on the outer peripheral surface of the base member into an empty space of a thermally shrinkable fluororesin tube; a preliminary shrinking step conducted according to need; a pressure fusion-bonding step of bringing the base member or rubber-coated base member into contact with a hot plate surface heated to a temperature in a range of 250° C. to 400° C. under pressure while rotating the base member or rubber-coated base member so as to fusion-bond the thermally shrinkable fluororesin tube onto the outer peripheral surface of the base member or the rubber-coated base member; and a reheating step and a rapid cooling step that are conducted according to need.
摘要:
In a thermal processing unit, a substrate is held by a local transport hand to be transported between a transfer section and a heating unit, and subjected to a heat processing by the heating unit. Also, the local transport hand is cooled by a cooling plate in the transfer section.
摘要:
A toner sealing material for use in a toner cartridge of an electrophotographic image formation apparatus is disclosed. The toner sealing material comprises an elastic layer which is in contact with the cartridge via an adhesive layer and a tetrafluoroethylene resin porous layer having a thickness of at least 0.2 mm which is laminated on the elastic layer via an adhesive layer and is in contact with a developing roller fixed to the cartridge. With the sealing material, a toner can be prevented from leaking from a toner cartridge for an extended period of time.