摘要:
A fluid-filled cylindrical vibration-damping device including a rubber elastic body elastically interconnecting an inner shaft member and an intermediate sleeve, having a first pocket and a second pocket closed by an outer tube member thereby defining a pressure receiving chamber and an equilibrium chamber respectively. Annular sealing portions are provided at axially opposite ends between the intermediate sleeve and the outer tube member. A circumferential groove extends in a circumferential direction between an axial edge of the second pocket and the annular sealing portion in an axial direction, being closed by the outer tube member to provide an orifice passage. One end of the orifice passage circumferentially opens to the pressure receiving chamber while another end circumferentially opens to the equilibrium chamber such that an axial inside dimension of the second pocket is expanded compared to that of an orifice-passage-formation part at a side of opening of the orifice passage.
摘要:
In one embodiment, the fixing apparatus of the present invention is a fixing apparatus in which while recording paper is transported sandwiched between a heating roller and a pressure roller that are pressed against each other, the recording paper is guided by a guide member, and heat and pressure are applied to the recording paper to fix toner on the recording paper, the fixing apparatus configured with the guide member rotatably provided such that the guide member can be removed from the transport path of the recording paper, and the center of rotational movement of the guide member matched with a shaft of the heating roller or a shaft of the pressure roller.
摘要:
In a fixing apparatus that an unfixed developer is fused and fixed by heating/pressurizing a recording medium on which an image of the unfixed developer is formed, a belt-shaped cleaning member is fed from a feeding roller, and the cleaning member is made to respectively contact a heating roller and a pressure roller by a pressure-contact roller, thereby cleaning that the heating roller and the pressure roller, respectively. When a winding roller takes up the cleaning member which has cleaned a roller surface, guide rollers are respectively provided between the pressure-contact roller and the winding roller, and between the feeding roller and the pressure-contact roller so as to contact the cleaning member.
摘要:
In one embodiment, an operation state, standby state or installation environment of an image forming apparatus is detected or determined, and details of heating control of the surface temperature of rollers of a fixing apparatus are changed in accordance with the detected or determined state or environment. For example, when the operation state is a state in which printing on a last sheet of recording paper in a print job is complete, or when the operation state is a state in which printing on recording paper is interrupted, and, in addition, when the installation environment is a low-temperature and low-humidity environment and the image forming apparatus enters the standby state, heating of the rollers is respectively controlled to prevent unexpected and inappropriate changes in the surface temperature of the rollers.
摘要:
A fixing apparatus and an image forming apparatus of the present invention are arranged so that a fixing control section causes a fixing roller to additionally rotate so that the additional rotation corresponds to a driving delay time also after turning OFF an external heating roller heater when shifting from a temperature raising step in which surface temperature of the fixing roller is raised so as to be equal to a preset fixing temperature to a standby mode and when turning OFF the external heating roller heater and stopping the fixing roller. As a result, it is possible to provide a fixing apparatus and an image forming apparatus in which a surface of a fixing roller is free from deterioration or breakage caused by local heating carried out by an external heating roller.
摘要:
A vibration-damping bushing assembly wherein a vibration-damping bushing is axially press-fit into a rigid cylindrical retainer of a companion member to be assembled therewith at an outer circumferential surface of an outer cylindrical member of the bushing. A rigid spacer ring band, of annular shape, is mounted while externally fitted by means of axial pressure on the circumferential surface of the outer cylindrical member. A flange of the outer cylindrical member and an end surface of the cylindrical retainer are brought into axial contact through the spacer ring band, and the spacer ring band is partially provided with at least one protrusion protruding on an inner circumferential surface so as to be fitted and fixed to the outer cylindrical member at the protrusion. A vibration-damping bushing and a rigid spacer ring band for the assembly are also disclosed.
摘要:
A vibration damping device includes an inner cylinder member having a first outer flange extending diametrically outward from its one axial end; an outer cylinder member having a second outer flange extending diametrically outward at its one axial end; and a rubber elastic body elastically connecting the inner cylinder member and the outer cylinder member, while having an end section sandwiched between sandwiched between the first and second outer flanges. The rubber elastic body is provided with hollow portions recessed diametrically inward from an outside periphery of the first outer flange at three or four locations in a circumferential direction of the end section of the rubber elastic body.
摘要:
A fluid-filled elastic mount for flexibly supporting a vehicle propeller shaft to the vehicle body, having an elastic body interposed between an inner and an outer sleeve. The mount has a pressure-receiving chamber, and a generally arcuate void which extends axially of the sleeves and which is located opposite to the pressure-receiving chamber in the diametric direction of the sleeves. The mount further has a first and a second equilibrium chamber adjacent to the circumferential ends of the pressure-receiving chamber and are partially defined by a first and a second flexible diaphragm. The pressure-receiving chamber communicates with the first and second equilibrium chambers through differently tuned first and second orifice, respectively. An elastic stop is disposed within the pressure-receiving chamber for limiting the relative displacement of the inner and outer sleeves.
摘要:
An electrostatic chuck includes: a ceramic substrate; a ceramic dielectric body provided on a top side of the ceramic substrate and having a first major surface where a processing target substrate is to be mounted; and an electrode provided between the ceramic substrate and the ceramic dielectric body. A material of the ceramic dielectric body is a ceramic sintered body. A plurality of protrusions and a groove for supplying a gas are provided on the first major surface of the ceramic dielectric body. A through hole is provided in a bottom face of the groove, the through hole penetrating to a second major surface of the ceramic substrate on a side opposite to the first major surface. A distance between the electrode and the groove is greater than or equal to a distance between the electrode and the first major surface.
摘要:
A fixing apparatus and an image forming apparatus of the present invention are arranged so that a fixing control section causes a fixing roller to additionally rotate so that the additional rotation corresponds to a driving delay time also after turning OFF an external heating roller heater when shifting from a temperature raising step in which surface temperature of the fixing roller is raised so as to be equal to a preset fixing temperature to a standby mode and when turning OFF the external heating roller heater and stopping the fixing roller. As a result, it is possible to provide a fixing apparatus and an image forming apparatus in which a surface of a fixing roller is free from deterioration or breakage caused by local heating carried out by an external heating roller.