Abstract: A negative-charge type electrophotographic photoreceptor includes a conductive substrate; an undercoat layer which includes a binder resin and metal oxide particles and in which the work function is from 4.0 eV to 4.7 eV; a charge generation layer in which a difference between the work functions of the charge generation layer and the undercoat layer is from ?4 eV to 0 eV; and a charge transport layer which is provided on the charge generation layer.

Abstract: A compressor according to the present invention has a housing including a first and second cylinder bores. The inner diameter of the first cylinder bore is smaller than that of the second cylinder bore. In suction process, refrigerant gas is directly drawn from an inlet port into a first suction chamber. The refrigerant gas is flowed from the first suction chamber into a first compression chamber. In contrast, refrigerant gas is drawn through the inlet port, a first suction passage, the first suction chamber, a first communication passage, a swash plate chamber and a second communication passage and into a second compression chamber. According to the above-described compressor, wherein the inner diameter of the first cylinder bore is smaller than the second cylinder bore, the difference of the amplitude of the intake pulsation between the first compression chamber and the second compression chamber can be suitably reduced.

Abstract: A variable displacement swash plate type compressor includes a displacement control valve. The displacement control valve includes a drive force transmitting member, a valve member having a first valve body, a pressure sensing mechanism, which adjusts the valve opening degree of the first valve body, a communication passage, which connects a back pressure chamber and an accommodating chamber to each other, and a second valve body, which selectively opens and closes the communication passage. The first valve body opens when current supply to an electromagnetic solenoid is stopped and the pressure in a suction pressure zone is less than a threshold value. The second valve body closes when current is supplied to the electromagnetic solenoid and opens when the current supply to the electromagnetic solenoid is stopped and the pressure in the suction pressure zone is greater than or equal to the threshold value.

Abstract: A liquid ejection apparatus includes: a recording portion; a medium-supply portion; a support member for supporting a recording medium while facing the recording portion; a conveyor mechanism including a conveyance guide and a conveyor roller; a first housing accommodating the recording portion; and a second housing accommodating the medium-supply portion, the support member, and the conveyor mechanism. The first housing is pivotable about a pivot shaft with respect to the second housing. The conveyance guide includes a guide portion disposed downstream of the conveyor roller and upstream of the recording portion and having an inclined guide face. The guide portion is opposed to the recording portion in the second direction with a clearance therebetween. The recording portion is configured to pass through a space corresponding to the clearance when the first housing is pivoted between the ejection position and the distant position.

Abstract: A roots type fluid machine includes a case having a side wall, a pair of rotary shafts provided in the case, a pair of rotors engaged with each other and fixed to the pair of rotary shafts so as to extend axially, respectively, a suction space formed by the case and the pair of rotors for introducing fluid, a discharge space formed by the case for discharging fluid and the pair of rotors and a transfer chamber formed by the case and the rotor. The rotor has a rotor end surface. A clearance is formed between the side wall and the rotor end surface. The transfer chamber transfers gas introduced in the suction space to the discharge space in accordance with the rotation of the pair of rotors. The case has a guide groove formed in the side wall facing the rotor end surface. Gas leaked from the discharge space into the clearance is introduced to the transfer chamber through the guide groove.

Abstract: An electronic component module includes a board having an electronic component mounted on a surface of the board and a shield case mounted on the surface of the board and covering the electronic component. The board includes a projecting part projecting from the surface of the board. The projecting part is formed of plating at a position along a sidewall of the shield case and is soldered to the shield case.

Abstract: In a recording apparatus, a first casing holds a supporting portion. A second casing holds a recording head and a first tank. The second casing is connected to the first casing so as to be rotatable relative to the first casing about a prescribed axis, the second casing being configured to move between a first position and a second position by rotating relative to the first casing, the recording head being located adjacent to the first casing when the second casing is in the first position, the recording head being further apart from the first casing when the second casing is in the second position than when the second casing is in the first position. The recording head opposes the supporting portion when the second casing is in the first position. The second casing is provided with a second tank mounting portion and a liquid transferring portion.

Abstract: A variable displacement swash plate type compressor having high controllability and capable of exhibiting high mounting performance and securing sufficient compression capacity is provided. The compressor of the present invention comprises a first cylinder block 21 and a second cylinder block 23, and an actuator 13. The actuator 13 includes a movable body 13a, a fixed body 13b, and a control pressure chamber 13c. A first cylinder bore 21a and a first storage chamber 21c are formed in the first cylinder block 21. A second cylinder bore 23a and a second storage chamber 23c are formed in the second cylinder block 23. The first cylinder bore 21a is formed to have a diameter smaller than the diameter of the second cylinder bore 23a.

Abstract: A double-headed piston type swash plate compressor includes a swash plate, a double-headed piston, a control pressure chamber, a discharge pressure region, a suction pressure region, a supplying passage, which extends from the discharge pressure region to the control pressure chamber, a narrowing portion, which narrows an opening degree of the supplying passage, and a displacement control valve. The displacement control valve controls a pressure in the control pressure chamber. The displacement control valve includes a driving force transmission rod, a valve chamber, a guide wall, and a back pressure chamber. The back pressure chamber is in communication with the valve chamber through a clearance between the guide wall and the driving force transmission rod. The narrowing portion has a passage cross-sectional area that is larger than a passage cross-sectional area of the clearance.

Abstract: A supporting section is disposed to confront an ejection surface and supports a recording medium. A first tank is mounted on a first-tank mount section. A liquid conveying section conveys liquid to a liquid ejecting head. A receiving section receives liquid ejected from the liquid ejecting head. A waste-liquid conveying section conveys liquid to the waste-liquid tank. A first casing holds the liquid ejecting head, the first-tank mount section, and the liquid conveying section. A second casing holds the supporting section, the receiving section, the waste-liquid tank, and the waste-liquid conveying section. The first casing is connected with the second casing such that the first casing is movable relative to the second casing. The first casing takes a first position at which the ejection surface confronts the supporting section and a second position at which the ejection surface is farther away from the supporting section than at the first position.

Abstract: A substrate mounting table (94) is equipped with a mounting table (2), an electrostatic chuck (6), and a bevel covering (5). The electrostatic chuck (6) has a supporting surface (6e) which is in contact with the whole of the rear surface of a wafer (W). The annular bevel covering (5) has an outer diameter (DA) which is greater than that of the supporting surface (6e), and an inner diameter (DI) which is smaller than that of the wafer (W). The bevel covering (5) is disposed such that, when viewed from the direction orthogonal to the supporting surface (6e), the bevel covering (5) surrounds the periphery of the wafer (W) supported on the supporting surface (6e).

Abstract: A variable displacement swash plate compressor that includes a cylinder bore, a swash plate chamber, a swash plate, and a double head piston, which defines first and second compression chambers in the cylinder bore. First and second suction chambers are in communication with the first and second compression chambers, respectively. The displacement of the top dead center of the piston in the first compression chamber is greater than the displacement of the top dead center of the piston in the second compression chamber. A first suction passage extends from a suction port to the first suction chamber without passing through the second suction chamber and the swash plate chamber. A second suction passage extends from the first suction chamber to the second suction chamber.

Abstract: A variable displacement swash plate type compressor includes a rotary shaft, a tiltable swash plate, a movable body that is coupled to the swash plate and changes the inclination angle of the swash plate, a link mechanism that permits the inclination angle of the swash plate to be changed, a first support portion provided to the movable body, a second support portion provided to the swash plate, and a first coupling member that couples the first and second support potions to each other. The second support portion is pivotally supported by the first coupling member. The swash plate has top and bottom dead center associated parts for positioning each piston at top and bottom dead centers, respectively. The top and bottom dead center associated parts are arranged with the rotary shaft in between. The second support portion is arranged between the top and bottom dead center associated parts.

Abstract: A variable displacement swash plate compressor includes a housing, drive shaft, first and second radial bearings, swash plate, and actuator. The actuator includes a movable body and fixed body. The movable body includes a main portion and circumferential wall. The main portion includes an insertion hole. The housing includes an accommodation wall. A first clearance exists between the circumferential wall and fixed body. A second clearance exists between the drive shaft and wall of the insertion hole. A third clearance exists between the circumferential wall and accommodation wall. A fourth clearance exists between the drive shaft and first radial bearing. A fifth clearance exists between the drive shaft and second radial bearing. The first and second clearances differ in size. The sum of the third clearance and the smaller one of the first and second clearances is larger than the fourth and fifth clearances.

Abstract: A variable displacement swash plate compressor is provided with a housing, a drive shaft, a swash plate, a link mechanism, a piston, a conversion mechanism, an actuator, and a control mechanism. The housing includes a suction chamber, a discharge chamber, a swash plate chamber, and a cylinder bore. The actuator includes a movable body coupled to the swash plate, a fixed body fixed to the drive shaft, and a control pressure chamber defined by the movable body and the fixed body. The movable body includes a circumferential wall extending in a direction along a rotational axis and surrounding the fixed body, which includes a guide portion projecting in an axial direction along an inner surface of the circumferential wall. The movable body contacts the guide portion to restrict inclination of the movable body relative to the drive shaft that is greater than or equal to a predetermined amount.

Abstract: In a recording apparatus, a first casing holds an accommodating portion and a conveying mechanism. A second casing holds a recording head, a first discharging portion and a first tank. The second casing is connected to the first casing so as to be rotatable relative to the first casing about a prescribed axis, the second casing being configured to move between a first position and a second position by rotating relative to the first casing, the recording head being located adjacent to the first casing when the second casing is in the first position, the recording head being further apart from the first casing when the second casing is in the second position than when the second casing is in the first position. The recording head opposes the supporting portion when the second casing is at the first position.

Abstract: A liquid ejecting head is accommodated in a first casing. A supporting section is accommodated in a second casing. The first casing is pivotally movable relative to the second casing about a predetermined axis. Pivotal movement allows the first casing to take a first position at which an ejection surface confronts the supporting section and a second position at which the ejection surface is farther away from the supporting section than at the first position. The predetermined axis is closer to a first side surface than to a second side surface, and extends in parallel with the first side surface. The second side surface is formed with: a first opening through which a first medium tray is inserted or removed; a second opening through which a first tank is inserted or removed; and a third opening through which a waste-liquid tank is inserted or removed.

Abstract: A liquid ejection apparatus is provided. The liquid ejection apparatus includes a first housing, a second housing, covers and a moving mechanism. The first housing is rotatable relative to the second housing about a rotational shaft between a close position and a separate position. The covers are movable relative to heads provided to the first housing between a protection position of covering the heads and a retraction position. When the first housing is moved from the close position toward the separate position, the moving mechanism moves the covers such that an angle formed between the first housing and the second housing when a cover corresponding to the head away from the rotational shaft reaches the protection position is smaller than an angle formed between the first housing and the second housing when a cover corresponding to the head close to the rotational shaft reaches the protection position.

Abstract: An electrophotographic photoreceptor includes a substrate; a photosensitive layer that is provided on the substrate; and a surface layer that is provided on the photosensitive layer, contains fluororesin particles, is a single layer having a thickness of 3 ?m or greater, and has a cross-section, taken along a thickness direction thereof, which satisfies specific expressions.

Abstract: An electrophotographic photoreceptor includes a conductive substrate, a photosensitive layer, and a surface layer that is provided on the photosensitive layer. The surface layer includes a cross-linked component which is a reaction product of compound A and compound B. The compound A is at least one compound selected from guanamine compounds and melamine compounds, and the compound B is a charge-transporting material. A structure derived from at least one compound selected from the guanamine compounds and the melamine compounds included in the surface layer amounts for 0.1% by weight to 5% by weight, and a structure derived from the charge-transporting material included in the surface layer amounts for 85% by weight or greater. Surface roughness Rz of the surface layer is from 0.1 ?m to 0.3 ?m, and the surface has at least one compound selected from fatty acid metal salt and fluorine resin particles.