摘要:
The present invention provides a hard multilayer film formed body which has an intermediate layer excellent in its adhesion to a base material and a DLC film which is a surface layer excellent in its wear resistance, prevents peeling from occurring between the DLC film and the intermediate layer, and is excellent in its wear resistance and a method for producing the same. A hard multilayer film formed body 1 consists of a multilayer film formed on a surface of a base material 2 consisting of a cemented carbide material or a ferrous material. The multilayer film has (1) a film, composed mainly of DLC, which is formed as a surface layer 5 of the multilayer film; (2) an intermediate layer 3, composed mainly of a metallic material, which is formed between the surface layer 5 and the base material 2; and (3) a stress relaxation layer 4, composed mainly of carbon, which is formed between the intermediate layer 3 and the surface layer 5. The stress relaxation layer 4 is a graded layer whose hardness increases continuously or stepwise from a side of the intermediate layer 3 toward a side of the surface layer 5.
摘要:
In a tandem type image formation apparatus, a drum drive unit which always simultaneously drives respective photoreceptor drums, is assembled such that it is possible to synchronize cycles of rotational speed fluctuations of the respective photoreceptor drums in assembling. In this manner, the photoreceptor drums rotate so as to synchronize the cycles of rotational speed fluctuations of the photoreceptor drums even after assembling. Therefore, a phase difference in the cycles of rotational speed fluctuations of the photoreceptor drums is determined, and the photoreceptor drums are assembled so as to be shifted by the phase difference.
摘要:
The present invention provides water-resistant grease which improves the resistance to peeling which occurs from the surface of a bearing composed of carbon steel for machine structural use or the like even in a strict lubricating condition in which water may penetrate into the water-resistant grease during the operation of the bearing, and a rolling bearing and a hub bearing which use the water-resistant grease and have a long life. The water-resistant grease is composed of non-water-based base oil, a thickener, and a water dispersant used as an additive. The saturated amount of water dispersible in the water-resistant grease is 30 to 60 wt %. The water dispersant capable of dispersing the water in the water-resistant grease is a surface active agent. The non-water-based base oil is mineral oil. The thickener is a urea-based compound. The present invention also provides a rolling bearing and a hub bearing in which the water-resistant grease is enclosed.
摘要:
A cooling fan has a metal spacer, a boss made of Nylon integrally formed with the spacer by an insert molding and seven blades extending outward therefrom. A skew angle of about 30 degrees is provided at a connecting portion or a base end portion of the blade to the boss so as to be inclined backward in relation to a rotating direction of the cooling fan. To the contrary, a skew angle of about 8 degrees is provided at a portion extending from the connecting portion to the leading end of the blade so as to be inclined forward in relation to the rotating direction.
摘要:
A heating mechanism includes a paper transmitting path for carrying a paper, a fixing roller provided on this paper transmitting path, a pressurizing roller disposed so as to oppose the fixing roller, a heating roller provided apart from the fixing roller for applying heat indirectly to the fixing roller, a belt which is wound around the heating roller and the fixing roller in order to transmit a rotation driving force from the fixing roller to the heating roller and thermal energy from the heating roller to the fixing roller and makes a contact with the other side face of the paper passing between the fixing roller and the pressurizing roller, and a pair of first restricting members disposed with a gap from both end faces of the heating roller to guard both sides of the belt on the heating roller thereby restricting a shifting motion of the belt in the width direction.
摘要:
Firing process and apparatus for uniformly heat-treating a substrate having a film-forming composition thereon, wherein the substrate is subjected to a first soaking step in which the substrate is held for a predetermined time in a first heating chamber whose temperature is maintained at a first value, so that the temperature within the substrate is held at the first value evenly throughout an entire mass of the substrate, and after feeding of the substrate into a second heating chamber whose temperature is maintained at a predetermined second value which is different from the first value by a predetermined difference, the substrate is subjected to a second soaking step in which the substrate is held for a second predetermined time in the second heating chamber, so that the temperature within the substrate is held at the second value evenly throughout the entire mass of the substrate.
摘要:
A cardiac output and right ventricular ejection fraction computer comprises a catheter, having an indicator injection port which is located at the right ventricular, inserted into an intravascular of a patient and retained therein; thermal detector device, mounted on a distal portion of the catheter, for detecting the temperature of blood ejected from the right ventricle; signal processor device for calculating the right ventricular ejection fraction from a thermodilution curve obtained by detecting variation of the blood temperature measured by the thermal detector device when a indicator is injected into the right ventricular through the catheter; data input device for inputting data to the signal processor device.
摘要:
The present invention provides a grease composition having an excellent fretting wear resistance in a wide temperature region from low to high temperatures and particularly even at low temperatures and a rolling bearing in which the grease composition is packed. A grease composition (7) is packed inside a grease-packed bearing (1). The grease composition (7) contains base oil, a thickener, and an additive. The additive contains at least, one kind selected from among a phosphite ester of formula (1) or a phosphite ester of formula (2):
摘要:
The present invention provides a grease composition having an excellent fretting wear resistance in a wide temperature region from low to high temperatures and particularly even at low temperatures and a rolling bearing in which the grease composition is packed. A grease composition (7) is packed inside a grease-packed bearing (1). The grease composition (7) contains base oil, a thickener, and an additive. The additive contains at least, one kind selected from among a phosphite ester shown by a chemical formula (1) or a phosphite ester shown by a chemical formula (2). The content of the phosphite ester is 0.5 to 4 parts by weight for 100 parts by weight which is the total of the amount of the base oil and that of the thickener. (In the chemical formulas (1) and (2), R1, R2, R3, R4, and R5 denote a methyl group or an ethyl group respectively. R1 and R2 are the same group or different groups. R3, R4, and R5 are the same group or different groups).
摘要:
A drive transmitting mechanism configured to rotate the photosensitive drum of a color copier has a driving shaft, a driven shaft, and first and second coupling members. The first coupling member has a projection extending in a diametrical direction. The first coupling member is attached to the driving shaft, with amount of freedom to oscillate in a direction intersecting at right angles to the lengthwise direction of the projection. The second coupling member has a recess in which the projection is fitted. The second coupling member is attached to the driven shaft, with amount of freedom to oscillate in the lengthwise direction of the recess. The first and second coupling members oscillate in the diametrical direction and slide on the contacting surface in a diametrical direction intersecting at right angles to the diametrical direction, thus suppressing the rotational speed change of the driven shaft, which results from the de-centering and declination between the driving shaft and the driven shaft.