Abstract: This invention discloses a pulse-sensing device and methods for pulse sensing. In one embodiment, the device includes a robotic finger comprising a humanoid-finger structure, and an actuating-force transferring member for transferring an actuating force to the structure at an actuation point thereon and along an actuation direction. One end of the structure is pivotally mounted to a fulcrum and another end has a sensing area. The robotic finger is configured such that, when the sensing area contacts a person's wrist, a first perpendicular distance from the fulcrum to a first line is substantially longer than a second perpendicular distance from the fulcrum to a second line, where the first line is a straight line passing through a sensing point of the sensing area and being substantially perpendicular to the sensing area, and the second line is a straight line passing through the actuation point and orienting along the actuation direction.

Abstract: An inkjet printing system includes a print head in fluid communication with an ink reservoir and having a plurality of orifices and a corresponding plurality of associated ejection chambers. The print head includes a substrate and a barrier layer disposed on the substrate. The barrier layer defines in part a plurality of fluid channels and the plurality of ejection chambers. The barrier layer includes a material selected from epoxy-based photo resist materials and methyl methacrylate-based photo resist materials. An orifice plate is disposed over the substrate. The orifice plate includes the plurality of orifices in fluid communication with the ejection chambers. The system includes a reservoir containing an organic solvent-based ink composition, wherein the ink composition includes an organic solvent selected from C1-C4 alcohols, C3-C6 ketones, C3-C6 esters, C4-C8 ethers, and mixtures thereof, in an amount 60% or more by weight of the ink composition.

Abstract: A tray locking device adapted to an optical disc drive for locking and releasing a tray is provided. The optical disc drive has an optical head connected to a lead screw and driven to move by the lead screw. The tray locking device includes a pushing member driven to move by the lead screw, a latching hook for locking and releasing a protruding pin, and a transmission assembly configured between the pushing member and the latching hook. The transmission assembly includes a first rod and a second rod movably configured in the tray. The first rod has a first driving portion, and the second rod has a second driving portion. When the transmission assembly is located at an initial position, the first driving portion is located on a moving path of the pushing member, while the second driving portion is not located on the moving path of the pushing member.

Abstract: A method of preparing an inkjet printing system with a print head in fluid communication with an ink reservoir and having a plurality of orifices and a corresponding plurality of associated ejection chambers includes providing a substrate and disposing a photoresist material on the substrate. A mask is provided between the UV light source and the photoresist material. The photoresist material is exposed to the UV light source to polymerize the photoresist material to form a barrier layer on the substrate. The barrier layer defines in part a plurality of fluid channels and the plurality of ejection chambers. An orifice plate is attached over the substrate. The orifice plate includes a plurality of orifices in fluid communication with the ejection chambers.

Abstract: An inkjet printing system includes a print head in fluid communication with an ink reservoir and having a plurality of orifices and a corresponding plurality of associated ejection chambers. The print head includes a substrate and a barrier layer disposed on the substrate. The barrier layer defines in part a plurality of fluid channels and the plurality of ejection chambers. The barrier layer includes a material selected from epoxy-based photo resist materials and methyl methacrylate-based photo resist materials. An orifice plate is disposed over the substrate. The orifice plate includes the plurality of orifices in fluid communication with the ejection chambers. The system includes a reservoir containing an organic solvent-based ink composition, wherein the ink composition includes an organic solvent selected from C1-C4 alcohols, C3-C6 ketones, C3-C6 esters, C4-C8 ethers, and mixtures thereof, in an amount 60% or more by weight of the ink composition.

Abstract: A tray locking device adapted to an optical disc drive for locking and releasing a tray is provided. The optical disc drive has an optical head connected to a lead screw and driven to move by the lead screw. The tray locking device includes a pushing member driven to move by the lead screw, a latching hook for locking and releasing a protruding pin, and a transmission assembly configured between the pushing member and the latching hook. The transmission assembly includes a first rod and a second rod movably configured in the tray. The first rod has a first driving portion, and the second rod has a second driving portion. When the transmission assembly is located at an initial position, the first driving portion is located on a moving path of the pushing member, while the second driving portion is not located on the moving path of the pushing member.

Abstract: A tray locking device of an optical disc drive adapted to lock and release a tray is provided. The optical disc drive has an optical head engaged with a lead screw and driven to move by the lead screw. The tray locking device includes a pushing member disposed on the optical head, a latching hook for latching and releasing a pin, and a transmission assembly disposed between the pushing member and the latching hook. The transmission assembly includes first and second lever elements. The first lever element pivoted in the tray has a slide slot having a first protrusion portion therein. The second lever element has a second protrusion portion adapted to move within the slide slot. When the tray is to be ejected, the lead screw drives the pushing member to push the second lever element, such that the second protrusion portion is aligned with the first protrusion portion.

Abstract: An electric generator using ferrofluid bearings is provided. The generator includes stators having plural magnets separated by a yoke of magnetizable materials. A rotor configured to rotate in a horizontal plane is positioned between the stators. The rotor includes plural coils in which current is induced during rotation from passing through the magnetic fields generated by the stators. A first set of ferrofluid bearings is positioned between the first stator and the rotor and a second set is positioned between the rotor and the second stator. A third set of ferrofluid bearings is positioned adjacent to the periphery of the rotor and configured to center the rotor. In one embodiment, the electric generator is wind-driven and supported in a wind collection housing.

Abstract: A method of preparing an inkjet printing system with a print head in fluid communication with an ink reservoir and having a plurality of orifices and a corresponding plurality of associated ejection chambers includes providing a substrate and disposing a photoresist material on the substrate. A mask is provided between the UV light source and the photoresist material. The photoresist material is exposed to the UV light source to polymerize the photoresist material to form a barrier layer on the substrate. The barrier layer defines in part a plurality of fluid channels and the plurality of ejection chambers. An orifice plate is attached over the substrate. The orifice plate includes a plurality of orifices in fluid communication with the ejection chambers.

Abstract: An optical disk drive including a case, a traverse, a guide rod, an optical pick-up head and at least a locking member is provided. The traverse is disposed in the case and includes at least a cantilever part and at least a locking hole. The cantilever part protrudes from a carrying surface of the traverse and is integrated with the traverse. The guide rod leans against a bearing end of the cantilever part. The optical pick-up head is slidably disposed on the guide rod. The locking member includes a leaning part and a locking part. The locking part is locked into the locking hole and the leaning part presses an upper side of an end of the guide rod for making the bearing end generate a bending displacement toward the carrying surface through the guide rod.

Abstract: A slim-type optical disc drive includes a casing and a tray. A first circuit board is disposed within the casing. A second circuit board is disposed on the tray. A spring switch is disposed on the second circuit board. A first end of the spring switch is fixed on the second circuit board. A resistor is connected between the first end of the spring switch and a first power source. A second end of the spring switch is extended outside the second circuit board. In a tray-out status, the second end of the spring switch is not contacted with any object, so that a first status signal is generated. In a tray-in status, the second end of the spring switch is contacted with a conducting zone of a second power source, so that a second status signal is generated.

Abstract: A slim-type optical disc drive includes a casing and a tray. A first circuit board is disposed within the casing. A second circuit board is disposed on the tray. A spring switch is disposed on the second circuit board. A first end of the spring switch is fixed on the second circuit board. A resistor is connected between the first end of the spring switch and a first power source. A second end of the spring switch is extended outside the second circuit board. In a tray-out status, the second end of the spring switch is not contacted with any object, so that a first status signal is generated. In a tray-in status, the second end of the spring switch is contacted with a conducting zone of a second power source, so that a second status signal is generated.

Abstract: The present invention provides an omnidirectional wind collection apparatus. The wind collector includes an outer housing with a peripheral wind inlet circumferentially formed therein. An inner housing disposed within the outer housing has an inner surface with a first opening at a lower end thereof to guide the collected wind to a smaller second opening at the top end. The inner surface is curved between the bottom and top openings to form a progressively narrower passage. The configuration of the inner surface creates a Venturi effect such that the wind is accelerated toward the second opening. A wind pass-through portion is formed above the second opening in the inner housing. Based on the Bernoulli effect, the passage of uncollected wind through this portion creates a low pressure region that expedites flow of collected wind through the first and second openings of the inner housing.

Abstract: An inkjet printing system includes a print head in fluid communication with an ink reservoir and having a plurality of orifices and a corresponding plurality of associated ejection chambers. The print head includes a substrate and a barrier layer disposed on the substrate. The barrier layer defines in part a plurality of fluid channels and the plurality of ejection chambers. The barrier layer includes a material selected from epoxy-based photo resist materials and methyl methacrylate-based photo resist materials. An orifice plate is disposed over the substrate. The orifice plate includes the plurality of orifices in fluid communication with the ejection chambers. The orifice plate comprises a material selected from polyimides and nickel.

Abstract: An optical disk drive including a case, a traverse, a guide rod, an optical pick-up head and at least a locking member is provided. The traverse is disposed in the case and includes at least a cantilever part and at least a locking hole. The cantilever part protrudes from a carrying surface of the traverse and is integrated with the traverse. The guide rod leans against a bearing end of the cantilever part. The optical pick-up head is slidably disposed on the guide rod. The locking member includes a leaning part and a locking part. The locking part is locked into the locking hole and the leaning part presses an upper side of an end of the guide rod for making the bearing end generate a bending displacement toward the carrying surface through the guide rod.

Abstract: An optical disc drive including a case, a tray, a traverse, a plurality of washers, a plurality of fastening elements and a plurality of adjustment elements is provided. The tray is suitable for carrying an optical disc and includes a plurality of hollow alignment pillars. The traverse is disposed on the tray and includes a plurality of alignment holes for containing the corresponding hollow alignment pillars. Each washer is disposed in each of the alignment holes and leans between each of the alignment holes and each of the hollow alignment pillars. The fastening elements lock the traverse onto the tray. Each adjustment element leans between each of the washers and the tray, and bears an engagement pressure.

Abstract: An optical disc drive is provided. The optical disc drive includes a housing having a protruding pin, an optical head engaged to a lead screw, a tray slidably disposed in the housing and a tray locking device disposed on the tray. The tray locking device includes a pushing member, wherein the pushing member and the optical head are driven by the lead screw to move, a latching hook used to latch and release the protruding pin, and a transmission assembly disposed between the pushing member and the latching hook. The transmission assembly has a driving portion disposed on a moving path of the pushing member, wherein the pushing member pushes the driving portion so that the transmission assembly is actuated and drives the latching hook to release the protruding pin.

Abstract: A tray locking device of an optical disc drive is adapted to lock and release a tray. The optical disc drive has an optical head engaged to a lead screw and driven to be moved by the lead screw. The tray locking device includes: a pushing member, disposed on the optical head; a first stop portion, disposed on the tray; a latching hook, adapted to latch and release a pin; and a transmission assembly, disposed between the pushing member and the latching hook and having a lever element and a weight block, wherein the lever element is movably disposed on the tray and has a second stop portion, and the first stop portion and the second stop portion can be coupled with each other.

Abstract: An optical disk drive including a housing, a top cover, a spindle motor and a supporting element is provided. The housing has an accommodating space. The top cover covers the accommodating space. The spindle motor is disposed within the accommodating space and has a shaft. The supporting element is disposed between an end of the shaft and the top cover. When the top cover is deformed, the shaft props up the top cover through the supporting element.

Abstract: A thermal inkjet printhead chip structure includes a substrate, an oxide layer formed on the substrate, at least one driver circuitry each including a source, a drain and a gate and formed on the substrate and further surrounded by the oxide layer, a dielectric layer, a buffer layer, a resistive layer and a conductive layer. The dielectric layer is formed on the driver circuitry and has openings formed therethrough to expose the source and drain. The buffer layer is formed on the dielectric layer, covering the source and drain and connected to the source and drain. The resistive layer is formed on the buffer layer and has at least one heating area. The resistive layer extends above the source and drain and is connected to the source and drain. The conductive layer is formed on the resistive layer and exposes the heating area. A manufacturing method also is provided.