Abstract: 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.

Abstract: 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.

Abstract: On a relay guide neighboring with a paper supply tray, a guide rib rotated and projected from a guide face is installed, and the width of sheets is controlled, thus an occurrence of skewing of various sheets supplied from a paper supply tray is prevented, and the conveyability of sheets is improved, and the image quality formed on the sheets is improved.

Abstract: 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.

Abstract: An image forming apparatus includes a roller having a central portion and an outer edge portion, a fusing belt positioned over at least a portion of the central portion of the roller, and a belt regulating part, positioned on the outer edge portion of the roller, that impedes the fusing belt from moving onto the outer edge portion of the roller. The belt regulating part includes a first portion having a surface adjacent to the central portion of the roller and an edge of the fusing belt. The first portion is configured to contact the fusing belt if the fusing belt moves toward the outer edge portion of the roller. The belt regulating part also includes a second portion coupled to the first portion, the second portion having an interior surface that contacts with the outer edge portion of the roller during operation of the image forming apparatus to cause the regulating part to rotate in conjunction with the rotation of the roller and the fusing belt.

Abstract: An image forming apparatus includes a roller having a central portion and an outer edge portion, a fusing belt positioned over at least a portion of the central portion of the roller, and a belt regulating part, positioned on the outer edge portion of the roller, that impedes the fusing belt from moving onto the outer edge portion of the roller. The belt regulating part includes a first portion having a surface adjacent to the central portion of the roller and an edge of the fusing belt. The first portion is configured to contact the fusing belt if the fusing belt moves toward the outer edge portion of the roller. The belt regulating part also includes a second portion coupled to the first portion, the second portion having an interior surface that contacts with the outer edge portion of the roller during operation of the image forming apparatus to cause the regulating part to rotate in conjunction with the rotation of the roller and the fusing belt.

Abstract: A fixing apparatus comprises a fixing roller, a heating roller separated from and arranged opposite to the fixing roller, a heat transfer member held by the heating roller and the fixing roller so as to move round and transfer heat from the heating roller to the fixing roller, a pressurizing roller held in contact with the fixing roller under pressure by way of the heat transfer member so as to heat an object of fixation by means of the fixing roller and put pressure on it and a regulating device which is arranged at least at one of the opposite ends of the fixing roller and held in contact with the corresponding edge of the heat transfer member so as to regulate any lateral movement, the regulating device being formed of molding synthetic resin so as to be resilient deformed when the heat transfer member exerts displaces it.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A needle type lens structure comprises, an inner tube having a relay lens inserted therein, an outer tube mounted around an outer periphery of the inner tube in concentric relation thereto with a predetermined gap, and light transmitting device, for guiding illumination light to the distal end of the needle type lens, provided axially between the inner tube and the outer tube.

Abstract: A control circuit for controlling a bimetal actuated choke valve adapted to be driven by a heater energized by electric power whose duty ratio is changed in response to ambient temperature. The control circuit is integrally formed by a hybrid integrated circuit, wherein the characteristics of the duty ratio with respect to the ambient temperature are adjusted by at least one resistance provided externally of the hybrid integrated circuit.

Abstract: An internal combustion engine with direct fuel injection is disclosed which comprises at least one combustion chamber fitted with a fuel injection valve. A charging electrode is disposed in the combustion chamber near the fuel injection valve and is supplied with a high DC voltage from a voltage source so as to charge the particles of fuel injected from the injection valve and thereby to disperse them.

Abstract: A novel method for crosslinking a polyolefin comprising reacting a polyolefin, which is a low density polyethylene having a density less than 0.93 and melt index of 0.1-0.5 g/10 min. or a polyolefin mixture containing a low density polyethylene having a density less than 0.93 as major component, with an organic silane and a free radical generating compound to form a silane-grafted polyolefin, then mixing silane-grafted polyolefin with a silanol condensation catalyst, and heating them. According to this method, the crosslinking takes place concurrently with forming by extrusion, and a shaped article having a high degree of crosslinking with smooth surface is obtained. The method according to this invention is especially suited for covering electrical wires with polyolefin.