摘要:
A nickel plating solution preparation method has the steps of: dissolving in water 100 g/L or more and less than 200 g/L of nickel sulfate, and 10 g/L or more and less than 30 g/L of sodium citrate or 8 g/L or more and less than 25 g/L of citric acid, but adding no nickel chloride; and adjusting a pH of the resultant solution to 2 or more and less than 4. Another nickel plating solution preparation method has the steps of: dissolving in water 100 g/L or more and less than 200 g/L of nickel sulfate, and 10 g/L or more and less than 30 g/L of sodium citrate or 8 g/L or more and less than 25 g/L of citric acid, but adding no boric acid; and adjusting a pH of the resultant solution to 2 or more and less than 4.
摘要:
A nickel plating solution preparation method has the steps of: dissolving in water 100 g/L or more and less than 200 g/L of nickel sulfate, and 10 g/L or more and less than 30 g/L of sodium citrate or 8 g/L or more and less than 25 g/L of citric acid, but adding no nickel chloride; and adjusting a pH of the resultant solution to 2 or more and less than 4. Another nickel plating solution preparation method has the steps of: dissolving in water 100 g/L or more and less than 200 g/L of nickel sulfate, and 10 g/L or more and less than 30 g/L of sodium citrate or 8 g/L or more and less than 25 g/L of citric acid, but adding no boric acid; and adjusting a pH of the resultant solution to 2 or more and less than 4.
摘要:
A copper foil 1 comprises a roughened plating layer 2, a Ni—Co alloy plating layer 3, a zinc galvanized (underlying) layer 4, a chromate treatment layer 5, and a silane coupling treatment layer 6 on a surface to be bonded with a base material for a printed circuit board, and the chromate treatment layer 5 is formed by using a trivalent chromium conversion treatment solution containing 70 mg/L or more and less than 500 mg/L of trivalent chromium ions converted into metal chromium and having a pH-value of 3.0 to 4.5. According to the present invention, a copper foil for a printed circuit board, a method for fabricating the same, and a trivalent chromium conversion treatment solution used for fabricating the same, which have an excellent controllability in Zn film forming amount and chromate film forming amount can be obtained.
摘要:
A copper foil 1 comprises a roughened plating layer 2, a Ni—Co alloy plating layer 3, a zinc galvanized (underlying) layer 4, a chromate treatment layer 5, and a silane coupling treatment layer 6 on a surface to be bonded with a base material for a printed circuit board, and the chromate treatment layer 5 is formed by using a trivalent chromium conversion treatment solution containing 70 mg/L or more and less than 500 mg/L of trivalent chromium ions converted into metal chromium and having a pH-value of 3.0 to 4.5. According to the present invention, a copper foil for a printed circuit board, a method for fabricating the same, and a trivalent chromium conversion treatment solution used for fabricating the same, which have an excellent controllability in Zn film forming amount and chromate film forming amount can be obtained.
摘要:
A computer-readable storage medium having stored therein an information processing program to be executed by a computer is provided. The information processing program causes the computer to function as: preferential display object placing means for placing a preferential display object in an imaging range of a virtual stereo camera in a virtual three-dimensional space; stereoscopically visible image rendering means for taking the virtual three-dimensional space using the virtual stereo camera, and rendering a stereoscopically visible image of the virtual three-dimensional space; and display control means for causing the display apparatus to display the stereoscopically visible image rendered by the stereoscopically visible image rendering means. The stereoscopically visible image rendering means renders the preferential display object in preference to a predetermined object in front of the preferential display object, such that a portion of the preferential display object being overlapped by the predetermined object is translucent.
摘要:
In a processing method of a slotted hole for processing a hole in a processed subject and further processing a slot intersecting the hole, a process for generating a compressive residual stress c is applied to an inner diameter portion of the hole before the slot is processed.
摘要:
Compositions and processes are disclosed for removing sulfur and sulfur compounds from hydrocarbon fuel feedstocks. The feedstock is contacted with a regenerable sorbent such as a compound of the formula TixCeyO2 where 0
摘要:
In a rotary electric machine, coils to be wound around an armature are wound so as to have a good magnetic balance. In a rotary electric machine formed with four poles, ten slots, and twenty commentator segments, a pair of coils that respectively conduct an electric current to the commutator segments adjoining an arbitrary commutator segment at both sides in the circumferential direction are caused to face permanent magnets, that are adjoining poles, to be poles opposite from each other, and one coil is wound in a normal winding state, and the other coil, in a reverse winding state.
摘要:
Disclosed is a light-emitting device including a first electrode; a second electrode opposite to the first electrode; and an organic layer that is formed between the first electrode and the second electrode and includes a light-emitting layer. The second electrode includes a conductive protection layer that is formed on the organic layer so as to protect the organic layer and a conductive main electrode layer that is formed on the protection layer.
摘要:
A magnetic code reading device and magnetic code reading method in an ATM or the like which after detecting a readout magnetic waveform including jitter, performs necessary transaction processing without performing uniform error processing in a predetermined case. The device includes a magnetic head having a magnetic sensor for writing and reading, magnetic code onto/from a magnetic recording medium, a timing disk for generating a timing pulse in correspondence with a moving distance of the magnetic head, and a controller for controlling the magnetic head and the timing disk, wherein upon reading of magnetic code on the magnetic recording medium where predetermined information is written in correspondence with the timing pulse, if jitter appears at relatively fixed intervals, corresponding to a rotational period of the timing disk, in a series of readout magnetic waveforms detected by the magnetic sensor, the controller recognizes the magnetic code based on the series of readout magnetic waveforms including the jitter, while if jitter is not related to the rotational period of the timing disk, the controller performs reading error processing.