摘要:
Since an inside piece of a joint block is abutted to a rib of a second opposed piece under a pressure by engaging a first opposed piece of a frame member with the joint block, the inside piece can be securely abutted at the position of the rib even when the second opposed piece and the joint block are slightly deformed, which secures a predetermined joint intensity by preventing a variation of the abutment position. Since the joint block is abutted with the rib, the pressure per a dimension can be more increased than abutting with the whole surface of the inside piece, which consequently increases the frictional force to improve the joint intensity.
摘要:
A recording apparatus including: (a) a recording head unit for forming a recording operation with recording materials; (b) a main circuit for outputting drive waveform signal sets each including drive waveform signals; and (c) a head driver unit for receiving each drive waveform signal set, generating a drive signal based on one of the drive waveform signals that is selected among each received drive waveform signal set, and supplying the drive signal to each actuators of the recording head unit. The main circuit is connected to the head driver unit through signal wires that transmit the drive waveform signals of the drive waveform signal sets. The signal wires include common signal wires each transmitting one of the drive waveform signals of one of the drive waveform signal sets that controls ejection of one of the recording materials used in a first recording mode, and also one of the drive waveform signals of one of the drive waveform signal sets that controls ejection of one of the other recording materials used in a second recording mode.
摘要:
A recording apparatus, including: a recording head including an actuator; a head holder holding the head; a circuit board disposed on the holder and configured to be connected to an external signal source; a drive circuit operable to drive the actuator; a flexible wiring member which includes wires that connect the actuator and the circuit board, which is elongated in a direction in which the wires extend, which is connected to the actuator and the circuit board at longitudinally opposite ends thereof, respectively, and on which the drive circuit is mounted between the longitudinal opposite ends, the wires including (a) a common voltage wire which connects common-voltage portions of the drive circuit and the circuit board and (b) a drive signal wire for driving the actuator; and a radiator having heat conductivity and electric conductivity and disposed between the head and the circuit board so as to extend along the wiring member, the radiator being heat-conductively and electrically joined to: (a) the common voltage wire in the vicinity of the drive circuit; (b) at least one portion of the common voltage wire intermediate between the drive circuit and the circuit board; and (c) at least one of (c-1) the common voltage wire in the vicinity of the circuit board and (c-2) the common-voltage portion of the circuit board connected to the commom voltage wire of the wiring member.
摘要:
The recording/reproduction method of the present invention includes the steps of: repeating one of a recording operation and a reproduction operation for the optical disc n times (n: an integer greater than or equal to 2) while changing a recording/reproduction condition in a stepwise and monotonous manner m times (m: an integer greater than or equal to 2); determining m number of averaged index values obtained under the same recording/reproduction condition based on the (m×n) pieces of signal data reproduced from the optical disc; determining an optimum recording/reproduction condition based on the m number of averaged index values; and performing at least one of the recording operation and the reproduction operation for the optical disc in accordance with the optimum recording/reproduction condition.
摘要:
A recording apparatus including: (a) a recording head unit for performing a dot recording operation by activation of the actuators; (b) a main circuit for outputting a plurality of sets of drive waveform signals; and (c) a head driver unit for receiving the sets of drive waveform signals outputted from the main circuit, generating a drive signal based on one of the drive waveform signals that is selected from among each of the received sets of drive waveform signals, and supplying the generated drive signal to each actuator of the recording head. The main circuit transmits a single set of waveform data signals containing data representative of the plurality of sets of drive waveform signals, to the head driver unit. The head driver unit includes a waveform signal retriever operable to retrieve the plurality of sets of drive waveform signals from the single set of waveform data signals, with reference to reference signals, so that the head driver unit receives the plurality of sets of drive waveform signals.
摘要:
A method for making molten iron includes the steps of feeding a raw material mixture containing an iron oxide material and a carbonaceous reductant into a heating reduction furnace to reduce iron oxide in the raw material mixture with the carbonaceous reductant into solid reduced iron; transporting the solid reduced iron to a melting furnace; and combustion of a carbonaceous material supplied as fuel to melt the solid reduced iron in the melting furnace for producing molten iron. After the metallization of the solid reduced iron is enhanced to at least 60%, the solid reduced iron is transported to the melting furnace. The amounts of oxygen and the carbonaceous material supplied to the melting furnace are controlled so that the secondary combustion ratio of CO gas in the melting furnace is reduced to 40% or less. The heat transfer efficiency of the secondary combustion heat to the molten iron is preferably increased to at least 60%.
摘要:
The present invention provides a method for upgrading low-rank coal unsuitable for production of a reduced metal by a conventional carbon composite method to produce an upgraded coal suitable for the carbon composite method. The prevent invention also provides a method for producing a high-quality reduced metal using the upgraded coal as a carbonaceous material to be incorporated. In these methods, coal is first aged by heating in an organic solvent to produce upgraded coal for metallurgy having higher thermal plasticity than that of the coal. Then, a mixture of the upgraded coal for metallurgy and a metal oxide-containing raw material is agglomerated by an agglomerator, and the resultant agglomerates are reduced by heating in a moving hearth furnace and then melted by further heating to produce a reduced melt. The reduced melt is cooled and solidified in the moving hearth furnace to produce a reduced solid, and then the reduced solid is discharged to the outside of the furnace. Then, a slag is removed using a screen to recover a metal as a reduced metal.
摘要:
The present invention is directed to a method of producing granular metallic iron, including: heating a formed raw material comprising a carbonaceous reductant and a substance containing iron oxide in a reduction melting furnace to subject the iron oxide contained in the formed raw material to solid-state reduction; and carburizing reduced iron resulting from the solid-state reduction with carbon contained in the carbonaceous in the formed raw material and causing resulting molten metallic iron to coalesce into the granular metallic iron, wherein an atmospheric gas present in proximity to the formed raw material in the carburizing and melting step has a reduction degree of not less than 0.5. The present invention is also directed to a method of producing metallic iron, including forming a deposit layer containing slag produced in the reduction melting process on hearth refractories, thereby protecting the hearth refractories while producing the metallic iron. The present invention is further directed to a device for supplying an auxiliary raw material to a hearth of a moving hearth type reduction melting furnace adapted to produce metallic iron, the device including a supply duct vertically connecting with a ceiling portion of the furnace.
摘要:
To prevent an output voltage from lowering due to increase of a parasitic capacitance when arranging a plurality of photoelectric conversion elements, a photoelectric conversion element, a reading field-effect transistor having a gate for receiving signal charges generated in the photoelectric conversion element and a source and a drain for reading a signal corresponding to signal charges accumulated in the gate, selection switch means set between the reading field-effect transistor and a power supply, and reset means for resetting the gate are provided on an insulating support body.
摘要:
A method of manufacturing a molten metal iron by charging a starting material at least comprising a carbonaceous reducing material and an iron oxide-containing material into a rotary hearth furnace, reducing under heating the charged starting material into a solid reducing iron, carburizing the metal iron in the solid reduced iron with the carbon ingredient in the carbonaceous reducing material, thereby melting the metal iron, separating the slag ingredient contained in the starting material by the melting, and discharging the molten metal alloy in the molten state as it is to the outside of the rotary hearth furnace for recovery, wherein a downward inclined surface is disposed at an angle 3 to 30° relative to the horizontal plane on the upper surface of a hearth of the rotary hearth furnace on which the starting material is placed, and the molten metal iron is discharged at the discharging position for the molten metal iron from the lowest portion of the inclined surface.