Abstract: A system for scanning an imaging plate, comprising: a continuous belt drive; a first scanning head mounted to the belt drive; a second scanning head mounted to the belt drive; and a laser positioned to direct a laser beam in a beam path across the imaging plate, wherein the continuous belt drive is positioned to sequentially move each of the first and second scanning heads in a path collinear with the laser beam path when moving across the imaging plate.

Abstract: An image information reading apparatus which is relatively small in size and weight has a laser beam applying device for applying a laser beam to a stimulable phosphor sheet inserted into an apparatus housing, and a light collecting device for collecting light that is emitted from the stimulable phosphor sheet upon exposure to the laser beam. The laser beam applying device and the light collecting device are displaced in unison with each other over the entire length of the stimulable phosphor sheet by a displacing mechanism.

Abstract: Stimulating rays are linearly irradiated onto an area of a stimulable phosphor sheet, and light emitted by the sheet is detected with a line sensor. A device for irradiating the stimulating rays comprises laser diodes and a cylindrical lens. The laser diodes are located such that laser beams produced by the laser diodes as the stimulating rays stand in a row along the length direction of the linear area of the sheet exposed to the stimulating rays. Each laser diode is located in an orientation such that a beam spread direction normal to a junction plane approximately coincides with the direction, along which the laser beams stand in a row. The cylindrical lens converges each laser beam only in a plane normal to the direction, along which the laser beams stand in a row, and onto the sheet.

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: Disclosed herein is an apparatus for reading radiation image information. The apparatus employs a storable phosphor sheet, which comprises a storable phosphor having an oblique orientation with respect to the thickness direction of the sheet. The direction of the optical axis of a collective lens, for collecting photostimulated luminescent light emitted from the storable phosphor sheet onto the light-receiving surface of a line sensor, is approximately aligned with the orientation of the storable phosphor.

Abstract: Stimulating rays are linearly irradiated onto an area of a stimulable phosphor sheet. Light emitted by the sheet is received with one surface of a light guide device, which is located such that the one surface stands facing the linear area of the sheet exposed to the linear stimulating rays. The emitted light, which has thus been received, is guided through the light guide device toward end faces of the light guide device. The emitted light, which has been radiated out from at least one end face of the light guide device, is detected with a line sensor comprising photoelectric conversion devices arrayed along the at least one end face of the light guide device.

Abstract: A stimulable phosphor film in which acicular particles of stimulable phosphor having an aspect ratio of 1.5 or more are oriented in the direction of depth of the phosphor film gives a reproduced radiation image having increased sharpness when it is employed in a radiation image recording and reproducing method.

Abstract: Disclosed herein is a radiation image information reader for reading radiation image information from a stimulable phosphor sheet and obtaining an image signal which represents the radiation image information. The radiation image information reader comprises a horizontal scan section and a read section. The horizontal scan section is used for horizontally scanning a plurality of spot-sized excitation light beams simultaneously onto the phosphor sheet at predetermined intervals on a horizontal scanning line. The read section is used to obtain the image signal which represents the radiation image information by photoelectrically detecting photostimulated luminescent light beams, emitted from portions of the sheet irradiated with the excitation light beams and/or from portions on a bottom surface of the sheet which correspond to the irradiated portions, by horizontal scanning of the excitation light beams.

Abstract: An image signal representing radiation image information on an object stored on a stimulable phosphor sheet is read out by scanning the stimulable phosphor sheet with a stimulating light beam and photoelectrically detecting light emitted from the stimulable phosphor sheet upon stimulation thereof by a photodetector having a photoelectric surface. A variable transmittance medium whose transmittance to the light emitted from the stimulable phosphor sheet upon stimulation thereof is variable continuously or stepwise is inserted into the optical path of the light between the stimulable phosphor sheet and the photoelectric surface of the photodetector The transmittance of the variable transmittance medium is changed according to the amount of light emitted from the stimulable phosphor sheet upon stimulation thereof so that the photoelectric surface is not saturated by an excessive amount of light impinging thereupon.

Abstract: A scanning apparatus is provided, which includes a medium attached to a surface of a fixed, hollow cylindrical segment, the fixed, hollow cylindrical segment having a first longitudinal axis, a rotational radial laser beam rotating around the first longitudinal axis and arranged to scan said medium, and a light sensitive detector having a light acceptance direction along a second axis coinciding with the first longitudinal axis of the cylindrical segment.

Abstract: Stimulating rays produced by a line light source are linearly irradiated onto an area of a stimulable phosphor sheet, on which a radiation image has been stored. Light, which is emitted from the linear area of the sheet exposed to the linear stimulating rays, is received and photoelectrically converted by a line sensor. Outputs of the line sensor are corrected in accordance with variation in sensitivity among a plurality of pixel regions of the line sensor, which pixel regions are arrayed along the length direction of the linear area of the stimulable phosphor sheet.

Abstract: An image reading apparatus includes three laser stimulating ray sources, a stage on which two or more kinds of image carriers can selectively be placed, a scanning mechanism for scanning the image carrier with a laser beam emitted from the laser stimulating ray sources, thereby stimulating the image carrier, a light detector for photoelectrically detecting light emitted from the image carrier in response to stimulation by the laser beam and a confocal optical system for leading light emitted from the image carrier to the light detector, the image reading apparatus further including a confocal switching member having pinholes of different diameters and disposed between the confocal optical system and the light detector.

Abstract: A method for processing electric signals of a radiographic image which are obtained by the steps of scanning a stimulating light beam on a stimulable phosphor sheet comprising a stimulating light-reflective or -absorbent grid and stimulable phosphor-containing microcells surrounded by the grid and having a radiographic image recorded therein in a direction along the grid and photoelectrically collecting in sequence stimulated emissions emitting from the microcells, is favorably performed by detecting a signal of a grid surrounding a microcell and a signal strength corresponding to the microcell surrounded by the grid; determining a correcting value for the detected signal strength; repeating the step of determining a correcting value for a signal strength in each microcell; and processing each signal strength detected in each microcell using each correcting value determined in each microcell, in consideration of a predetermined pixel size of the radiographic image, to obtain a corrected radiographic image dat

Abstract: A radiation image read-out apparatus including a lens array and a line sensor for reading an image recorded on a stimulable phosphor sheet provides a read-out image of high quality which is free from a spurious pattern due to non-aperture regions of the lens array. A first memory stores an image signal representing the image recorded on the stimulable phosphor sheet. Spurious pattern signal calculating means calculates a spurious pattern signal based on positions of the non-aperture regions on the lens array. The spurious pattern signal is stored in a second memory. Image modification means reads the image signal and the spurious pattern signal from the first and second memories to calculate a processed image signal free from any spurious pattern signal on a pixel-by-pixel basis. The spurious pattern signal may instead be obtained by causing the apparatus to read a uniform radiation image recorded on the stimulable phosphor sheet.

Abstract: Stimulating rays produced by a line light source are linearly irradiated onto an area of a stimulable phosphor sheet, on which a radiation image has been stored, the stimulating rays causing the sheet to emit light in proportion to an amount of energy stored thereon during its exposure to radiation. Light emitted from the exposed linear area of the sheet is received with a line sensor comprising photoelectric conversion devices arrayed along each of a length direction of the linear area of the stimulable phosphor sheet and a direction normal to the length direction. The sheet is moved with respect to the line light source and the line sensor and in a direction different from the length direction of the linear area of the sheet. Operation processing is performed on outputs of the photoelectric conversion devices, which outputs have been obtained at respective positions of movement and correspond to an identical site on the sheet.

Abstract: An image reading apparatus comprises at least one laser stimulating ray source for emitting a laser beam and a light detector for photoelectrically detecting fluorescent light released from an image carrier upon an excitation by the laser beam. The light detector can detect light having wavelength shorter than 700 nm with high sensitivity. The apparatus further comprises a filter provided in front of the light detector that is made of a material to able cut light having wavelength of the laser stimulating ray and emits a fluorescent light having a peak wavelength equal to or longer than 700 nm upon excitation by the laser stimulating ray. According to the thus-constituted image reading apparatus, it is possible to read fluorescent images with high sensitivity.

Abstract: A radiation image read-out apparatus comprises a device for irradiating stimulating rays to a stimulable phosphor sheet, on which radiation image information has been stored, the stimulating rays causing the stimulable phosphor sheet to emit light in proportion to the amount of energy stored thereon during its exposure to radiation. The apparatus also comprises a light guiding system, which is provided with a light guide member and a mirror and which guides the emitted light, and a device for detecting the guided light and thereby reading out the radiation image information. A mirror body provided with the mirror is constituted for rotation. The mirror body has a light guide member dust removing brush, which rotates due to rotation of the mirror body, comes into contact with the light guide member, and removes dust clinging to the light guide member. A mirror dust removing brush comes into contact with the mirror due to rotation of the mirror body and removes dust clinging to the mirror.

Abstract: In a two-side radiation image reading method wherein a stimulable phosphor sheet storing a radiation image is scanned by stimulating rays and light emitted from the front and back sides of the sheet is photoelectrically detected by photoelectric reading means separately located on the front and back sides of the sheet to obtain two image signals representing the radiation image to be subjected to addition processing or the like for obtaining a final image, shading correction data and/or fading correction data are obtained in advance and shading correction and/or fading correction is carried out on the image signals by using the correction data having been obtained. While an area equivalent to one side of the stimulable phosphor sheet (whose number of main scan lines is 4320) is being scanned, reading of the sheet is switched between the front and back sides and sensitivity of photoelectric reading means is also changed (to standard, semi-high, and high).

Abstract: A compact apparatus for reading a radiation image that has been stored in a photostimulable phosphor screen comprises an array of transducer elements, e.g. avalanche photodiodes, and electronic circuitry for integrating the signal of each of the transducer elements that are illuminated by the light emitted by a pixel of the screen upon stimulation of that pixel.

Abstract: An apparatus for reading out a storage luminophore plate has a holder for the storage luminophore plate as well as for a detector line, and a device for setting the spacing between the storage luminophore plate and the detector line such that this spacing is controlled or regulated to be substantially constant with reference to the storage luminophore plate, at least over the region of the detector line.

Abstract: A radiation image readout apparatus which provides the option of selecting whether or not radiation energy is to be erased after readout thereof has been performed, which is provided with a readout portion for reading out the image data of a radiation image from a stimulable phosphor sheet, and an erasing means for erasing the radiation energy remaining on the stimulable phosphor sheet after readout therefrom has been performed. The apparatus also has a mode input switch for selecting and inputting the desired readout mode from among the three choices of readout-and-erase mode, readout only mode, and erase only mode, and a control means for controlling the readout means and the erasing means according to the mode that has been selected and input.

Abstract: An image reading apparatus includes a laser stimulating ray source for emitting a laser beam, a stage on which an image carrier can be placed, a scanning mechanism for scanning the image carrier with the laser beam emitted from the laser stimulating ray source, thereby stimulating the image carrier with the laser beam, a light detector for photoelectrically detecting light emitted from the image carrier, and an optical head for leading the laser beam emitted from the laser stimulating ray source to the image carrier, irradiating the image carrier with the laser beam and leading light emitted from the image carrier to the light detector, the optical head being constituted so as to lead light emitted from a point of the image carrier located upstream of a point of the image carrier onto which the laser beam impinges with respect to a direction of scanning with the laser beam.

Abstract: A scanning apparatus is provided, which includes a fixed, hollow cylindrical segment having a central, longitudinal axis, the interior of which forms a concave surface for intimate contact with a medium for recording and/or readout, a support structure forming a transport for translational movement along the axis, a light source mounted on the transport for movement therewith and for providing a beam capable of being directed along the axis, and a slanted mirror, angled 45 degrees with respect to the axis and mounted on the transport for translational movement therewith and for rotational spinning around the axis. The beam from the light source is reflected 90 degrees from along the axis along a radial to the medium and the rotation and translation cause the beam to scan the medium such that the rotating light beam is at all times perpendicular to the medium at the point of contact of the beam with the medium.

Abstract: Disclosed herein is a method of inspecting influence of stray light which occurs in a radiation image reader. The inspection method comprises the steps of: preparing a storable fluorescent inspection sheet that has stored and recorded a radiation inspection image which has a density pattern in which one or more low-density and high-density regions having a contrast difference of at least 1:20 are arrayed in a horizontal scanning direction; obtaining an image inspection signal representing the radiation inspection image, by photelectrically reading the radiation inspection image from the storable fluorescent inspection sheet; and inspecting the influence of stray light, based on an image reproduced from the image inspection signal.

Abstract: A medical image reading apparatus comprises a controller to conduct an operation control on one of a first operation mode to execute reading a medical image after order information with regard to the reading the medical image is inputted and a second operation mode to execute reading a medical image before the order information with regard to the reading the medical image is inputted; and a reader to conduct the reading the medical image based on the operation control by the controller.

Abstract: Data identifying a radiographic image are entered manually into an identification station. Then, the radiographic image is transferred by radio frequency transmission from the identification station to a radio frequency tag provided on a cassette conveying a photo stimulable phosphor screen in which a radiographic image has been stored.

Abstract: Disclosed is a system for and method of reading out a storage phosphor screen (or a storage phosphor sheet or an imaging plate) sensitive to radiation in which, in performing a radiography by using the storage phosphor screen, the storage phosphor screen is stimulated optically to induce luminescence according to a response to radiation to acquire a digital image of a subject from the storage phosphor screen by using a semiconductor light source array as a stimulating light source to which an optical fiber array consisting of a bundle of optical fibers having a diverse forms is connected; a starting of the semiconductor light source array is controlled with an electric pulse; and a semiconductor light source array starting pulse for generating a stimulating light is interlocked with a photomultiplier tube for collecting a luminescence light signal induced from the storage phosphor screen by the stimulating light to represent the collected luminescence light as distribution of a two-dimensional position to acq

Abstract: A multiple-head scanning device (20) for reading an image stored on a photostimulable phosphor storage screen (10), comprising, a rotatable frame having a center (13) and an outer perimeter (15); a photomultiplier tube (40) mounted to the rotatable frame at a location proximal the center (13) of the rotatable frame; a plurality of radially extending optical trains (12) mounted to the rotatable frame at 120 degrees to one another, each optical train (12) configured to direct incident laser light towards phosphor storage screen (10) and to direct response radiation emitted by phosphor storage (10) screen in response to the incident laser light towards the photomultiplier tube (40).

Abstract: An X-Ray cassette (1) and a device (10) for reading information stored in a memory layer (15) are disclosed. This device (10) contains a radiation source (11) to excite a row (34) of the memory layer (15). The row (34) emits an emission radiation (17) because of this excitation. The device (10) based on the invention contains a receptor (12) to receive the emission radiation (17). The receptor (12) includes a number of light-sensitive surfaces (18) that are arranged in adjacent rows. According to the invention, the dimension of the light-sensitive surfaces (18) of the receptor (12) arranged perpendicular to the orientation (A) of the rows (34) is greater than that oriented along the row direction (B). Alternatively or additionally, the device can include an optical projector (14) by means of which the emission radiation (17) is projected onto the receptor (12).

Abstract: Apparatus for reading information stored in a memory layer (15) which includes a shielding device (22), and an X-ray cassette and an X-ray table for use with the apparatus, are disclosed. The shielding device (22) serves to shield a reader device (10) from an information recording beam (25). The reader device (10) includes a receptor (12) to receive emission radiation (17) that contains an image of the information recorded in the memory layer (15). Instead of the shielding device (22), it is also possible to provide a converter (29) that serves to convert an information-recording beam (25) into converted radiation (28) that possesses less energy than the information recording beam (25).

Abstract: There is described a radiation image reading apparatus, which includes a memory to memorize information regarding each of a plurality of subjects as reservation data for each subject, a plurality of slots into each of which a recording medium recording a radiation image can be loaded, a selector to select at least one reservation data for a subject from the plural reservation data, a correlating unit to correlate the selected reservation data with at least one of the plurality of slots, a registration list preparing unit to preparing a registration list based on the selected reservation data and a display to display the registration list.

Abstract: A radiation source, which produces radiation, is located on one side of an object, two-dimensional image read-out device is located on the other side of the object, the two-dimensional image read-out device comprising stripe-shaped electrodes for reading latent image charges, which carry image information, and an operation for recording and reading out a radiation image of the object is performed. A grid plate is located between the object and the two-dimensional image read-out device, the grid plate guiding only the radiation, which comes from a specific direction, to the two-dimensional image read-out device. The operation for recording and reading out the radiation image of the object is performed in this state, and deterioration in image quality due to scattered radiation is prevented.

Abstract: For use with an optical scanning device, a reading head comprising a housing having at least one bore for accommodating therein a respective photo-multiplier tube and a non-intersecting lateral bore for accommodating therein a stimulating light source for producing a stimulating beam having a first wavelength. A focusing lens is mounted in association with the stimulating light source for focusing the stimulating beam on a film of the scanning device so as to produce stimulated fluorescent light having a second wavelength in the film at a point of contact by the stimulating beam. A window is provided within the housing for mounting therein a filter for transmitting therethrough the stimulated fluorescent light whilst substantially blocking reflections of the stimulating beam.

Abstract: A system is provided for scanning an object, the system comprising: a drive shaft having a proximal portion and a longitudinal axis; a motor including a motor shaft having a rotational axis, the motor serving to rotate the motor shaft about the rotational axis; a flexible joint coupling the drive shaft to the motor shaft by the proximal portion of the drive shaft, the flexible joint having a range of motion which allows the longitudinal axis of the drive shaft to move relative to the rotational axis of the motor shaft; and an object attached to the drive shaft which is movable along the longitudinal axis of the drive shaft in response to the drive shaft being rotated by the motor. This system may be used in a drum scanner system and may be used to read storage layer radiation screens.

Abstract: A cassette in which a radiographic image converting plate is accommodated, comprises a case having an opening; a tray on which the radiographic image converting plate is loaded; and a cap capable of being fitted with the opening, the cap connected with the tray so that the tray is moved together with the cap so as to be inserted into or drawn out from the case through the opening, the position of the cap capable of being displaced relative to the tray.

Abstract: An integrating optical collector with a diffusely reflective interior surface and with at least one wavelength selective absorptive filter located therein in a position that nearly bisects the interior of the collector. The filters are highly transmissive in a first wavelength band corresponding to an emission band of a storage phosphor, but highly absorptive in a second wavelength band corresponding to a stimulation band of the phosphor. The filter's wavelength selective properties and nearly bisecting position in the collector minimizes re-illumination of a phosphor at the stimulation wavelength, while permitting efficient radiation collection and detection at the emission wavelengths. A cylindrical collector with two parallel lengthwise slits permitting passage of the scan beam to the phosphor surface is preferred. Two filter plates on opposite sides of the slit may be used, which can either be parallel to each other and to the slits or oriented at an angle with respect to each other.

Abstract: An apparatus capable of measuring quantities of biological or other types of samples that have been labeled using any of a variety of techniques including fluorescence, radioisotopes, enzyme activated light emitting chemicals, and enzyme activated fluorescent materials is provided. The apparatus allows for either simultaneous or sequential acquisition of signals from multiple sample types. The apparatus is not restricted to a particular source or wavelength of excitation or readout light, nor is the apparatus restricted to a particular emission wavelength. The provided scanner includes a source module that preferably contains an internal laser emitting two different wavelengths of approximately the same intensity. An optional external light source may be coupled to the source module, thus adding further flexibility through the addition of other wavelengths (e.g., V, visible, mid-IR, and IR). The scanner also includes a detection module.

Abstract: Accessories for a device used for reading a latent image recorded on an image plate by means of X-radiation. The device comprises: a drum element (8), having a concave peripheral surface (7); drive means (20) for rotating (R) the drum element at such a speed that a flexible image plate (1) located inside the drum element against the peripheral surface substantially retains the shape thereof; a light source (14) for focusing a stimulating light on the image plate (1), a light detector (17) for detecting the emitted light, as well as means (27) for moving the stimulating light and the light detector relative to the image plate in a direction (M) of said axis. The accessories comprise at least two balancing blocks (4, 5), which constitute permanent parts of the drum element and are located at a distance from the axis of rotation.

Abstract: A method of obtaining an electrical representation of a radiation image by means of at least one CCD sensor. A stimulable phosphor plate, the area of which is divided into at least two different portions, is exposed to a radiation image. Each of the portions is stimulated by light guided from a light source, the light having a wavelength within the stimulating wavelength range of the phosphor on the plate and causing the phosphor plate to emit stimulated light. The stimulated light from each phosphor plate portion is guided to at least one two-dimensional CCD sensor kept in a static position relative to the phosphor plate portion, such that the CCD detects the stimulated light. The detected stimulated light is converted into an electrical representation of the plate portion, and the electrical representation of each of the different plate portions is combined to form an electrical representation of the radiation image.

Abstract: A method for reading an electron beam image that has been stored in a photostimulable phosphor screen wherein the photostimulable phosphor screen is scanned with stimulating radiation and wherein light emitted upon stimulation is converted in to a digital image signal. Enhanced sensitivity is obtained by heating the screen in between exposure to the electron beam image and stimulation of the screen.

Abstract: A method of processing a digital radiographic image includes the following the steps. (1) A digital radiographic image having a radiation region and a collimation region defined by collimation blades at least partially bounding the radiation region is provided. (2) Pixels of the digital radiographic image are detected and classified as collimation boundary transition pixels. (3) Candidate collimation blades are detected and classified from the collimation boundary transition pixels. (4) At a regional level, the collimation region are determined from the results of the line-level delineating step.

Abstract: An arrangement for detecting an image on a phosphorescent foil has two light conductors which lead to a common photomultiplier. The light conductors are spaced from one another by a small gap which allows a laser beam to pass between the conductors and excite the foil. The light conductors have flat end faces for the admission of light into the conductors, and the end faces are directed towards the foil as well as the gap. The end faces make an angle of 10 to 30 degrees with the foil. The light conductors are designed so that the greater part of impinging radiation is admitted into and travels the length of a conductor only when the path of the radiation and a normal to the respective end face define an angle which is equal to or less than the acceptance angle of the conductor. Each end face has an edge remote from the gap, and a location at which the laser beam impinges the foil defines a plane with a location on either edge.

Abstract: A radiation image storage panel composed of a support sheet and a stimulable phosphor layer, in which the support sheet shows a light transmittance of not less than 70% in the wavelength region between 400 nm and 800 nm and a haze of 10 to 30 is favorably employed in a radiation image reading system employing a double-side reading system in which a stimulating step and an erasing step are simultaneously performed in parallel on the same storage panel.

Abstract: A radiation image storage panel comprises a substrate and a stimulable phosphor layer, which is overlaid on the substrate and emits light in proportion to the amount of energy stored thereon during its exposure to radiation when it is exposed to stimulating rays. The substrate is constituted of a material, which transmits the light emitted by the stimulable phosphor layer and absorbs and/or scatters light having wavelengths falling within a stimulation wavelength range for the stimulable phosphor layer. The light having wavelengths falling within the stimulation wavelength range is thus prevented from passing or propagating through the substrate, and the signal-to-noise ratio of an image signal detected from the radiation image storage panel is thereby prevented from becoming low.

Abstract: A method for verifying the modulation depth of a digital radiographic read out system. The system reads a radiation image by line-wise scanning a photostimulable phosphor screen that has been exposed to the radiation image. The radiation image includes an image of a phantom that has at least one x-ray opaque grating with parallel lines and a stepwise evolving spatial frequency. SWR values are determined by analyzing the x-ray image of the phantom. These SWR values are compared with acceptance values and the results of the comparison are used to adjust the scanning read out system.

Abstract: There is disclosed a process and apparatus for receiving and reproducing radiographic information from an anisotropic storage phosphor screen including an auto-collimating photostimulable phosphor layer of a material selected from the group consisting of europium activated barium fluorobromide, europium activated potassium chloride, indium activated potassium bromide or indium activated rubidium iodide, which absorbs impinging ionizing radiation emanating from or passing through an object to be imaged, a collimated or focused interrogating beam of photons directed parallel to the columnar structure of the screen to stimulate the trapped electrons within the storage phosphor to release the energy stored therein as luminescent photons, an opto-electro-mechanical assembly to achieve a raster scan of the interrogating beam over the area of the phosphor screen, a detector for converting the luminescent photons into electrical signals, and a computer to record and/or display the intensity versus positional informat

Abstract: A scanning device includes sheet a holding member provided with an arcuate support surface open to the upside and one side for holding a sheet to be scanned on the back surface of which a magnetic layer is formed, a light source for irradiating the sheet to be scanned with light, a spinner including a deflection mirror for deflecting light from the light source toward the sheet to be scanned and a converging optical system for converging light deflected by the deflection mirror onto a surface of the sheet to be scanned, a motor for rotating the spinner coaxially with a center axis of the arcuate support surface, a light detector for detecting light from the sheet to be scanned, a sub-scanning motor for translating the sheet holding member relative to the spinner in parallel with the center axis, magnetic material provided on the arcuate support surface of the sheet holding member, sheet end portion holding members provided at one end portion of the arcuate support surface of the sheet holding member and adapt

Abstract: An image processing apparatus includes a temporary memory for two-dimensionally mapping and temporarily storing image data containing image data regions corresponding to at least two image regions having similar shape and stored in an image data storing section, a CRT for reproducing an image based on the image data stored in the temporary memory, a pixel specifying section for specifying pixels corresponding to at least two equivalent points in at least two image regions having similar shape in the image displayed on the CRT, a data correcting section for effecting, between micro region image data corresponding to micro regions including coordinates of the at least two pixels specified by the pixel specifying section as center coordinates, rotation and movement correction and enlargement/reduction magnification correction on the micro region image data in the image data corresponding to one image region so that a rotation angle and an enlargement/reduction magnification of the one image region coincide with

Abstract: An image forming apparatus includes an image data memory for storing image data, a temporary memory for two-dimensionally mapping and temporarily storing the image data stored in the image data memory, an image data selecting section for selecting image data from among the image data stored in the temporary memory, an image data enlarging/reducing section for enlarging or reducing the selected image data, an enlarged/reduced image data memory for two-dimensionally mapping and temporarily storing the enlarged or reduced image data, a graphic data memory for storing graphic data to be displayed on a CRT together with the image data, a data synthesizing section for selecting graphic data to be displayed from among graphic data stored in the graphic data memory and synthesizing them and the image data stored in the enlarged/reduced image data memory, a synthesized data memory for two-dimensionally mapping and temporarily storing the synthesized image data and graphic data, a data area selecting section for select

Abstract: In a radiation image information read apparatus, a stimulable phosphor sheet, on which radiation image information has been stored, is scanned with stimulating rays, and light emitted by the stimulable phosphor sheet upon stimulation thereof is photoelectrically detected by a photodetector and converted into an electric image signal bearing thereon the radiation image information. A solid laser crystal which emits a laser beam having a wavelength of .lambda.2 pumped by a laser beam at a wavelength of .lambda.1 from a laser diode is combined with a nonlinear optical crystal which converts the laser beam at .lambda.2 to a laser beam at .lambda.3 within the stimulating wavelength range of the stimulable phosphor sheet, is employed as a source of the stimulating light. A filter which cuts the laser beam at .lambda.3 and transmits light emitted from the stimulable phosphor sheet, is disposed between the stimulable phosphor sheet and the photodetector.