Abstract: An oil-coating roller constituted mainly of an oil-retaining layer around a central core and an oil-coating control layer surrounding the oil-retaining layer is provided which does not require a sealing treatment for prevention of oil leakage from the roller end face, and has a long service life. The oil-retaining layer is formed by winding in layers a nonwoven fabric which exhibits an oil-sucking height of not less than 60 mm and has an oil permeability of 40 g/cm2/hr.

Abstract: A tubular member for an oil application device is formed separately and is fitted in such a manner as to cover a peripheral face of a porous cylindrical oil retaining member. The tubular member for the oil application device has a multi-layer structure including an inner layer and an outermost layer. The inner layer is a fibrous layer, and the outermost layer is a porous film. The porous cylindrical oil retaining member can be easily covered with, fitted with, and removed of the member for the oil application device, which is made from a fibrous layer such as a felt or from a porous film such as a PTFE film.

Abstract: An oil-coating roller constituted mainly of an oil-retaining layer around a central core and an oil-coating control layer surrounding the oil-retaining layer is provided which does not require a sealing treatment for prevention of oil leakage from the roller end face, and has a long service life. The oil-retaining layer is formed by winding in layers a nonwoven fabric which exhibits an oil-sucking height of not less than 60 mm and has an oil permeability of 40 g/cm2/hr.

Abstract: A tubular member for an oil application device is formed separately and is fitted in such a manner as to cover a peripheral face of a porous cylindrical oil retaining member. The tubular member for the oil application device has a multi-layer structure including an inner layer and an outermost layer. The inner layer is a fibrous layer, and the outermost layer is a porous film. The porous cylindrical oil retaining member can be easily covered with, fitted with, and removed of the member for the oil application device, which is made from a fibrous layer such as a felt or from a porous film such as a PTFE film.

Abstract: An oil application apparatus comprising a porous oil-holding member, a heat-resisting fiber felt, and an oil application amount control layer. The porous oil-holding member is impregnated with silicone oil. The heat-resisting fiber felt has a bending resistance in the range of 30 to 90 mm and is provided on an oil application side of the porous oil-holding member. The oil application amount control layer is provided on the oil application side of the heat-resisting fiber felt.

Abstract: An oil application device having an oil application amount control layer bonded to an oil retaining member for retaining application-use silicone oil using the mixture of adhesive and mixture-use silicone oil. The ratio (VKS)/(VTS) of a viscosity (VKS) of the mixture-use silicone oil at 25° C. to a viscosity (VTS) of the application-use silicone oil at 25° C. ranges from 50/1 to 1/10. By using the oil application device, releasing oil can be applied to a thermal fixing roller uniformly. The oil application amount control layer does not peel off or is not displaced during operation, and no oil exudes during nonuse.

Abstract: In an oil application roller having an oil retaining member made of a hollow cylindrical porous formed body provided with an oil application layer on the outer periphery and that supplies a fixing roll with lubricant oil retained in the oil retaining member, the porous formed body is made of an inorganic material having micro-diameter voids and pores inside, at least a part of the micro-diameter voids communicates with a surface of the porous formed body and the pores, and at least a part of the pores communicates with a surface of the porous formed body through the micro-diameter voids. Also, if permeability resistance is 100 to 6,000 Pa.s/m2, no oil leak occurs during transportation and storage, the amount of the lubricant oil supplied to the fixing roll can be controlled and a uniform amount of lubricant oil can be supplied despite its compact and simple structure, the utilization rate of the lubricant oil can be enhanced.

Abstract: An oil application device includes a web that comes in contact with the surface of the fuser roller, a supply roll for delivering the web, and a take-up roll for taking up the web, wherein the web is applied and impregnated with a mixture of a fuser oil and a curing agent.

Abstract: A tubular member for an oil application device is formed separately and is fitted in such a manner as to cover a peripheral face of a porous cylindrical oil retaining member. The tubular member for the oil application device has a multi-layer structure including an inner layer and an outermost layer. The inner layer is a fibrous layer, and the outermost layer is a porous film. The porous cylindrical oil retaining member can be easily covered with, fitted with, and removed of the member for the oil application device, which is made from a fibrous layer such as a felt or from a porous film such as a PTFE film.

Abstract: The present invention provides an oil application device in which an oil application amount control layer is bonded with an oil retaining member for retaining application-use silicon oil using the mixture of adhesive and mixture-use silicon oil, and in which the ratio (VKS)/(VTS) of a viscosity (VKS) of the mixture-use silicon oil at 25° C. to a viscosity (VTS) of the application-use silicon oil at 25° C. ranges from 50/1 to 1/10. By using the oil application device of the present invention, releasing oil can be applied to a thermal fixing roll uniformly. The oil application amount control layer does not peel off or is not displaced during operation, and no oil exudes during nonuse.

Abstract: In an oil application roller 1 having an oil retaining member 2 made of a hollow cylindrical porous formed body provided with an oil application layer 3 on the outer periphery thereof and that supplies a fixing roll with lubricant oil 6 retained in the oil retaining member 2, the porous formed body 2 is made of an inorganic material having micro-diameter voids and pores inside, at least a part of the micro-diameter voids communicates with a surface of the porous formed body and the pores, and at least a part of the pores communicates with a surface of the porous formed body through the micro-diameter voids. Also, if permeability resistance is 100 to 6,000 Pa.s/m2, no oil leak occurs during transportation and storage, the amount of the lubricant oil supplied to the fixing roll can be controlled and a uniform amount of lubricant oil can be supplied despite its compact and simple structure, the utilization rate of the lubricant oil can be enhanced.

Abstract: An oil coating roller comprising a porous round-rod-like molded product, a heat-resistant fiber felt layer provided on an outer circumference of the porous round-rod-like molded product, and a porous film applied onto an outer circumference of the felt layer. The porous round-rod-like molded product contains heat-resistant fibers bound to each other by a binder, and has fine communicating voids free from the binder among the fibers and evenly distributed pores having a pore size in a range of from 0.05 to 2 mm and a total void percentage in a range of from 30 to 90%. The porous round-rod-like molded product is impregnated with silicone oil. The heat-resistant fiber felt layer has a thickness in a range of from 0.5 to 5 mm. The porous film has a thickness in a range of from 15 to 130 &mgr;m, a mean pore size in a range of from 0.1 to 3.0 &mgr;m, a porosity in a range of from 60 to 90% and an air permeability in a range of from 3 to 1500 sec per 100 cc.

Abstract: A coating fluid holding member including a porous molded body which is formed of heat-resistant fibers (or a mixture of heat-resistant fibers and a filler) bound to each other with a binder, has intercommunicating pores having an average pore size of 1 to 500 .mu.m, and has a porosity of 20 to 90%, and a coating fluid holding member including a porous molded body which is formed of heat-resistant fibers bound to each other with a binder, contains fine intercommunicating interstices between fibers and uniformly distributed pores having a diameter of 0.05 to 2 mm, and has a porosity of 30 to 90%. The holding member has a high fluid holding capacity for its volume and releases the coating fluid, such as a parting agent, an oil or a coating compound, in a stable manner for an extended period of time.

Abstract: A molded friction material for a damper is disclosed, which contains, as a part of a friction regulating material, porous fibrous particulates having an average particle size of 0.5 to 2 mm and a bulk density of 0.1 to 0.2 g/cm.sup.3 and comprising finely divided ceramic fibers or porous fibrous particulates having an average particle size of 0.1 to 5 mm and a bulk density of 0.2 to 2.0 g/cm.sup.3 and comprising finely divided ceramic fibers, a filler, and a binder. The friction material exhibits excellent performance basically required of a friction material, such as mechanical strength and damping characteristics, and hardly squeaks during damping.

Abstract: Disclosed is an oil coating roller composed of a coating fluid holding member comprising a porous hollow cylindrical molded body impregnated with a coating fluid, such as silicone oil, with a driving shaft inserted through the hollow portion thereof, both ends of the coating fluid holding member being fixed to the driving shaft, and felt fabricated of heat-resistant fiber wounded around the outer surface thereof, wherein the porous hollow cylindrical molded body is fabricated of heat-resistant fibers bound to each other with a binder and has an average pore size of 15 to 50 .mu.m and a porosity of 50 to 80%. The oil coating roller can be produced with ease, stably feeds the coating fluid for an extended period of time, and is particularly suitable for applying silicone oil to a fixing roller of an electrostatic copying machine.

Abstract: Moistened powder and granular materials, such as produced by an extrusion granulator, are disintegrated into uniformly sized and shaped granules by an apparatus having a cylindrical housing and a working plate rotatably disposed in the housing in coaxial alignment with said housing, with an opening at the center of the working plate. A working fluid is introduced into the interior of the housing above the working plate through a wall of the housing and moistened powder and/or granular raw materials are supplied into the housing onto the working plate. The treated materials are discharged through the central opening in the working plate.

Abstract: A thermosetting coating composition suitable for use in the production of coated and precoated metals comprises (A) a thermosetting resin-hardener mixture which is a mixture of at least one base resin and at least one hardener, (B) an aluminum silicate colloid which is a mixture of Al.sub.2 O.sub.3 or Al(OH).sub.3 with SiO.sub.2, (C) a melamine cyanurate compound, and (D) a solvent in such an amount that the composition has a viscosity adequate for coating. Optionally a pigment and/or lubricant may be added.

Abstract: A refractory for use in firing ceramics has a ceramic coating applied by plasma spraying onto the surface of a heat-resistant lightweight shaped article containing heat-resistant lightweight shaped article containing heat-resistant inorganic fibers. The shaped article is composed of highly aluminous short fibers not longer than 2,000 .mu.m or a mixture thereof with an aluminous refractory powder as bound to each other by means of aluminous binder, the shaped article not containing free silica.