Abstract: A fuel assembly includes a bottom nozzle set on a lower core plate of a nuclear reactor, a top nozzle with a hold down spring to urge the bottom nozzle against the lower core plate, guide thimbles which guide control rods, having passed through the top nozzle, toward the lower core plate, a dashpot formed on each of the guide thimbles to reduce the fall velocity of a corresponding one of the control rods, a thimble screw which connects each of the guide thimbles to the bottom nozzle, and a drain hole formed to extend through each of the thimble screw. The dashpot has a large-diameter portion with substantially the same diameter as that of each of the guide thimbles. The diameter d of the drain hole falls within a range of 0.04D<d<0.08D where D is an inner diameter of the large-diameter portion.

Abstract: An image free from aliasing or moiré is obtained when a spatial frequency of a repeated pattern such as a grid pattern is smaller than a spatial frequency required for image information. In one embodiment, digital image data S1 is first obtained by reading a radiation image from a storage-type phosphor sheet storing the radiation image taken using a grid of 4 bars/mm, the reading being performed at sampling intervals of 20 cycles/mm. Image data S1 contains the grid pattern component at 4 cycles/mm, and harmonics components of the grid pattern at 8, 12, 16 and 20 cycles/mm. The harmonics components are removed by filtering processing, and the image data is sampled down to one half to obtain an image data with a Nyquist frequency of 10 cycles/mm. Further filtering processing and sub-sampling processing are performed to obtain an image data with a Nyquist frequency of 5 cycles/mm.

Abstract: Stripe patterns caused by grids having different pitches can be reduced when image data obtained by reading images photographed by using the grids are reproduced. A radiation image is read from a stimulable phosphon sheet on which the radiation image has been recorded by photographing using a grid of 3.4 lines/MM. Filtering processing by filtering means is carried out on digital image data obtained by the reading. The coefficients of a filter used in the filtering processing are −1, −1, 4, −3, −14, 0, 43, 68, 43, 0, −14, −3, 4, 1, −1. This filter is to reduce a response of a spacial frequency equal to or more than 3.3 cycles/mm to equal to or less than 5%, preferably to equal to or less than 2%. In processed image data obtained through filtering processing using such a filter, a response of 3.4 cycle/mm or 4.0 cycle/mm frequency corresponding to the grid of 3.4 lines/mm or 4.

Abstract: A printer that is able to accommodate rolled papers of different widths. The printer includes a rolled-paper holder and a partitioning member. The rolled-paper holder includes a bottom wall having a first contact bottom portion and a second contact bottom portion, a first contact side wall, and a second contact side wall, wherein the sidewalls are substantially parallel to each other. The partitioning member includes a third contact side portion arrangeable in parallel to the first contact side wall and the second contact side wall, a third contact bottom portion that is brought into elastic contact with the bottom wall at a predetermined elasticity and may be stopped there by engagement, and a coupling portion that may be coupled to the second contact side wall.

Abstract: An input of an evaluation object image signal representing an evaluation object image with respect to a pattern composed of a plurality of evaluating regions, in each of which at least one signal area is located at a predetermined position, is accepted. The evaluating regions have been set such that a size and contrast of the signal area vary by stages for different evaluating regions. The positions of the signal areas, which are located in all of the evaluating regions in the evaluation object image, are detected in accordance with a reference image signal, which represents a reference image with respect to the pattern, and the evaluation object image signal. The evaluation object image is evaluated in accordance with the results of the detection of the positions of the signal areas.

Abstract: At least one kind of image input modality and at least one kind of image information output device are connected to an image processing system. At least one kind of image input modality, which is among connected image input modalities, includes a plurality of image information input apparatuses having different input device characteristics. The image processing system comprises a standardization device for carrying out transform processing on image information such that, in every case where the image information has been received from one image information input apparatus, which is among the plurality of the image information input apparatuses, the received image information may be transformed into standard image information, which does not depend upon the input device characteristics of the one image information input apparatus and depends upon standard device characteristics having been set previously for the image input modality including the one image information input apparatus.

Abstract: A miniaturized rolled-paper holding mechanism is capable of detecting the residual quantity of rolled-paper in both horizontally and vertically installed states of a printer. The rolled-paper holding mechanism includes a rolled-paper holder, a holder cover, a positioning member, and a residual-paper-quantity sensor. The positioning member is structured such that, as the holder cover is opened or closed, the inclination angle of the positioning member is varied with respect to a second-bottom-portion inclined surface formed in the rolled-paper holder. Further, a second positioning groove—which, when the holder cover is closed, can be contacted with rolled-paper R having a given diameter—is formed between the positioning member and the second-bottom-portion inclined surface of the rolled-paper holder.

Abstract: Using an image processing apparatus for carrying out general interpolation processing which can freely adjust a frequency response characteristic regardless of an enlargement or reduction ratio, an image whose frequency response characteristic almost agrees visually with the frequency response characteristic of an optimal diagnostic image obtained by interpolation processing of another kind can be easily obtained. The image processing apparatus comprises conversion means for converting the characteristic of interpolation processing by first enlargement or reduction processing means to a characteristic corresponding to that of interpolation processing by second enlargement or reduction processing means so that a visible image reproduced by a network printer almost agrees visually with a visible image reproduced by a CR printer, in terms of the enlargement or reduction ratio and the response characteristic.

Abstract: A developing apparatus, an image formation apparatus and a process cartridge is provided. Even though the sealing materials of the initial developer container are stripped off in such a way that the process cartridge having the developing apparatus is tilted, the initial developer can be uniformly supplied along the central axis line of the developer carrier. The developing apparatus performs a self toner control and has an initial developer case 10 for containing the non-used initial developer 3c that is input into the developer containing space S. The initial developer case 10 is divided internally into a plurality of partition spaces 10b along the direction of the central axial line D of the developing sleeve 4, so that a plurality of partitions 10c is formed inside the initial developer case 10.

Abstract: The explanation of the results of a diagnosis becomes easier to perform while an image is displayed on a monitor. A table recording a variety of diagnostic findings, and image processing parameters corresponding thereto is stored in a storage means. When the diagnostic findings are inputted from an input means, an image processing means obtains, based on the table, the image processing parameter according to the diagnostic results. Then, the image processing means subjects the medical data to image processes, by use of the image processing parameter, to obtain processed image data, which is then displayed as a visible image on the monitor.

Abstract: At least one kind of image input modality and at least one kind of image information output device are connected to an image processing system. At least one kind of image input modality, which is among connected image input modalities, includes a plurality of image information input apparatuses having different input device characteristics. The image processing system comprises a standardization device for carrying out transform processing on image information such that, in every case where the image information has been received from one image information input apparatus, which is among the plurality of the image information input apparatuses, the received image information may be transformed into standard image information, which does not depend upon the input device characteristics of the one image information input apparatus and depends upon standard device characteristics having been set previously for the image input modality including the one image information input apparatus.

Abstract: A fuel assembly includes a bottom nozzle set on a lower core plate of a nuclear reactor, a top nozzle with a hold down spring to urge the bottom nozzle against the lower core plate, guide thimbles which guide control rods, having passed through the top nozzle, toward the lower core plate, a dashpot formed on each of the guide thimbles to reduce the fall velocity of a corresponding one of the control rods, a thimble screw which connects each of the guide thimbles to the bottom nozzle, and a drain hole formed to extend through each of the thimble screw. The dashpot has a large-diameter portion with substantially the same diameter as that of each of the guide thimbles. The diameter d of the drain hole falls within a range of 0.04D<d<0.08D where D is an inner diameter of the large-diameter portion.

Abstract: In an apparatus for suppressing noise in an input image signal representing a radiographic image: at least one first characteristic of the input image signal is obtained by calculation based on information indicating an exposure dose with which the radiographic image has been produced; at least one second characteristic of a smoothing filter is adapted to the input image signal based on the at least one first characteristic; and the input image signal is processed by using the smoothing filter so as to smooth the radiographic image. In addition, a plurality of band-limited image signals respectively representing a plurality of band-limited images belonging to a plurality of different frequency bands are generated based on the input image signal, each of the plurality of band-limited image signals is processed by using the smoothing filter so as to smooth each of the plurality of band-limited images.

Abstract: An image free from aliasing or moiré is obtained when a spatial frequency of a repeated pattern such as a grid pattern is smaller than a spatial frequency required for image information. In one embodiment, digital image data S1 is first obtained by reading a radiation image from a storage-type phosphor sheet storing the radiation image taken using a grid of 4 bars/mm, the reading being performed at sampling intervals of 20 cycles/mm. Image data S1 contains the grid pattern component at 4 cycles/mm, and harmonics components of the grid pattern at 8, 12, 16 and 20 cycles/mm. The harmonics components are removed by filtering processing, and the image data is sampled down to one half to obtain an image data with a Nyquist frequency of 10 cycles/mm. Further filtering processing and sub-sampling processing are performed to obtain an image data with a Nyquist frequency of 5 cycles/mm.

Abstract: When image data are compressed, a degree of image quality degradation can be recognized. At the time of compressing the image data, compression information is added as tag information in a file header of the image data. In this manner, by referring to the compression information, compression history of the compressed image data can be understood, and a degree of image quality degradation of the image data obtained by decompressing the compressed image data can be known.

Abstract: A printer that is able to accommodate rolled papers of different widths. The printer (1) includes a rolled-paper holder (4) and a partitioning member (7). The rolled-paper holder (4) includes a bottom wall (4a) having a first contact bottom portion (42) and a second contact bottom portion (41), a first contact side wall (4c), and a second contact sidewall (4b), wherein the sidewalls are substantially parallel to each other. The partitioning member (7) includes a third contact side portion (71) arrangeable in parallel to the first contact side wall (4c) and the second contact side wall (4b), a third contact bottom portion (72) that is brought into elastic contact with the bottom wall (4a) at a predetermined elasticity and may be stopped there by engagement, and a coupling portion (73) that may be coupled to the second contact side wall (4b).

Abstract: A winding shaft, for use in a printer allows a wound recording paper to be easily removed therefrom. The winding shaft includes a shaft main body, a winding portion and a support-removing member. The winding portion, which sandwiches the shaft main body, winds the recording paper therearound. The shaft main body includes a pair of support-removing members, which respectively project from the shaft main body. The two support-removing members are respectively supported on the two side portions of the shaft main body in such a manner that they can be freely rotated about their respective support shafts. A tension-coiled spring is bridgingly disposed between the two support-removing members, so that the two support-removing members remain in standing positions when no external force is applied to them.

Abstract: Output-size information G1 and reference-resolution information G0 are input to a zoom-rate section. The zoom-rate section derives zoom-rates M1 and M2, based on the output-size information G1 and the reference-resolution information G0. A reconstruction section reconstructs an image at the resolution level corresponding to the specified zoom-rate M1. A parameter-setting section derives an image-processing parameter K1 suitable for the resolution level of a reconstructed-image signal S1, based on the zoom-rate M1, reference-resolution information G0, and reference-processing parameter K0, and sets the derived parameter K1 to the image-processing section. The image-processing section obtains a processed-image signal S2 by performing image processing, using the image-processing parameter K1. A zoom-processing section performs a zoom process on the processed-image signal S2, using the zoom rate M2.

Abstract: A large molded article block free from distortion and residual stress can be obtained by means of a method of producing a polytetrafluoroethylene molded article by compression-molding a polytetrafluoroethylene powder to form a preform and baking the resulting preform with rotating. Furthermore, a film or sheet having less curling and wrinkle can be obtained by cutting the molded article block.

Abstract: A miniaturized rolled-paper holding mechanism (10) which is capable of detecting the residual quantity of rolled-paper in both horizontally and vertically installed states of a printer. The rolled-paper holding mechanism (10) includes a rolled-paper holder (21), a holder cover (41), a positioning member (51), and a residual-paper-quantity sensor (61). The positioning member (51) is structured such that, as the holder cover (41) is opened or closed, the inclination angle of the positioning member (51) is varied with respect to a second-bottom-portion inclined surface (29) formed in the rolled-paper holder (21). Further, a second positioning groove (31)-which, when the holder cover (41) is closed, can be contacted with rolled-paper R having a given diameter-is formed between the positioning member (51) and the second-bottom-portion inclined surface (29) of the rolled-paper holder (21).