摘要:
An electrolytic copper plating method using a reducing agent is provided, wherein a catalyzed, electrically nonconductive substrate is dipped in a solution, which contains a copper salt, a copper-reducing agent for the acceleration of copper deposition and a copper-complexing agent and has a pH value of about 6 to 7.5, for electrolysis at a temperature of about 15.degree. C. to 50.degree. C., thereby forming an electrically conductive film of copper on said electrically nonconductive substrate. This method can be used in place of conventional electroless copper plating, dispense with any harmful substance such as formaldehyde, be easily analyzed and controlled, form an electrically conductive film of copper on an electrically nonconductive substrate with improved adhesion thereto, and is effectively applicable to making printed circuit boards in particular.
摘要:
An immersion tin/lead alloy plating bath has a basic composition comprising an organic sulfonic acid, divalent tin and lead salts of the organic sulfonic acid and thiourea and further contains thiocyanic acid or derivative thereof, optionally with hydrated hydrazine. With this plating bath, an alloy deposit, which has a particularly desired Sn/Pb ratio of 60%/40% or so and is improved in terms of adhesion and homogeneity, can be stably obtained on the surface of copper or a copper alloy in a relatively low temperature region within a short span of time.
摘要:
The invention provides an image identification device that classifies block images obtained by dividing a target image into predetermined categories, using a separating plane learning of which has been completed in advance for each of the categories. The image identification device includes a target image input unit inputs the target image, a block image generation unit divides the target image into blocks to generate the block images, a feature quantity computing unit computes feature quantities of the block images, and a category determination unit determines whether the block images are classified into one of the categories or not, using the separating plane and coordinate positions corresponding to magnitudes of feature quantities of the block images in a feature quantity space, wherein the feature quantity computing unit uses, as a feature quantity of a given target block image, local feature quantities and a global feature quantity.
摘要:
The invention provides an image identification device that classifies block images obtained by dividing a target image into predetermined categories, using a separating plane learning of which has been completed in advance for each of the categories. The image identification device includes a target image input unit inputs the target image, a block image generation unit divides the target image into blocks to generate the block images, a feature quantity computing unit computes feature quantities of the block images, and a category determination unit determines whether the block images are classified into one of the categories or not, using the separating plane and coordinate positions corresponding to magnitudes of feature quantities of the block images in a feature quantity space, wherein the feature quantity computing unit uses, as a feature quantity of a given target block image, local feature quantities and a global feature quantity.
摘要:
An ink-feeding device is provided in which the pressure applied to the ink in the printing head can be adjusted arbitrarily irrespective of the relative positions of the ink container and the printing head. Inside the sub-tank 80, a pressure-adjusting pump 82 is installed for applying a suitable pressure to many nozzles 22Kn of the printing head 22K. This pressure-adjusting pump 82 is placed a little above the bottom face of the sub-tank 80 at a prescribed distance from the bottom face. Thereby the pressure-adjusting pump 82 is immersed in the ink held in the sub-tank 80. A drive unit 83 for driving the pressure-adjusting pump 82 is placed above the sub-tank 80. On the upper wall of the sub-tank 80, an air-vent valve 84 is fixed to bring the inside pressure in the sub-tank 80 to an atmospheric pressure. The inside pressure in the sub-tank 80 is made equal to the atmospheric pressure by opening the air-vent valve 84.
摘要:
A CATV station 1 for broadcasting a television program is connected to an internet network B. The CATV station 1 is connected to a terminal device 2. The terminal device includes a tuner section T for receiving a broadcasting signal for the television program transmitted from the CATV station, an interface section S for making transmission/reception of a telephone signal for the internet network B and a switching circuit 5 which is connected to the interface section, a telephone set 3 and a public switched phone network C. The switching circuit 5 selectively connects the telephone set 3 to the interface section S or the public switched phone network. In this configuration, the internet telephone can be used without doing troublesome operations, and the public switched phone network or internet network can be selected according to the facility of the internet terminal device on the side of a called party so that telephone call can be executed easily.
摘要:
A recording head for recording data onto a recording medium is provided with a thin film formed of the following compound Fe.sub.100-a-b-c X.sub.a Y.sub.b Z.sub.c, wherein X is at least one element selected from the group consisting of Nb, Ta, Hf and Zr, Y is one or two elements selected from the group consisting of Cr, Ru, Al, Si, Ti and Rh, and Z is at least one element selected from the group consisting of C and N, and wherein 5.ltoreq.a.ltoreq.20, 0.5.ltoreq.b.ltoreq.15, 1.ltoreq.c.ltoreq.20, and 0.5.ltoreq.a/c.ltoreq.0.7, the carbide or the nitride of the element X having an average grain size of not larger than 3 nm. This way, increased corrosion resistance is provided without substantially reducing magnetic characteristics such as saturation and coercive force. A recording apparatus, such as a VTR, including such a recording head is disclosed as well as a recording medium formed using this thin film.
摘要:
A frequency synthesizer that can switch an output frequency fast and generates little spurious output is provided. This frequency synthesizer comprises a phase locked loop including a voltage-controlled oscillator, a high frequency divider, a phase frequency comparator and a low-pass filter. The divisor controller circuit supplies a divisor that varies cyclically to the high frequency divider for a fractional dividing operation. When switching the output frequency, a passing bandwidth of the low-pass filter is enlarged to widen a loop bandwidth of the phase locking loop for fast switching. After switching, the passing bandwidth of the low-pass filter is reduced to narrow the loop bandwidth for reduction of a spurious output, at the timing when a predetermined period has passed for the switched output frequency to stabilize substantially.
摘要:
An additive for an acidic tinplating bath comprises: an additive ingredient (A) prepared by adding oxypropylene to polyoxyethylene glycol and having an average molecular weight ranging from 3000 to 18000; an additive ingredient (B) prepared by adding oxypropylene to polyoxyethylene glycol and having an average molecular weight ranging from 300 to 1500; and the additive ingredient (A) and the additive ingredient (B) having a weight ratio of the additive ingredient (A) to the additive ingredient (B) being from 97/3 to 40/60.
摘要:
A disc reproducing apparatus for reproducing a disc on which at least audio data such as sound, music or the like and image data such as pictures, characters or the like are recorded is comprised of a reproducing device for reproducing audio data recorded on the disc, a memory for writing therein image data recorded on the disc, a video signal generating circuit for generating a video signal on the basis of image data stored in the memory, a display supplied with the video signal and displaying thereon the image data, and an image processor for writing the image data on the memory when the audio data is reproduced and selecting the image data written so that selected image data is sequentially displayed on the display.