摘要:
A laser imaging apparatus, such as a laser scanner or laser printer, includes a gas or diode laser which produces a laser beam and an optical system for directing the laser beam onto a object to be scanned or printed. The laser beam is encompassed in a sealed housing from the laser's output to a point at which the beam is no longer subjected to turbulent environment in order to eliminate laser beam pointing instabilities resulting from a turbulent environment caused by thermal sources, cooling fans, etc.
摘要:
An improved continuous ink jet printing system which continually recirculates its ink through an ion-exchange treatment is disclosed. The system includes collecting guttered ink for reconstitution and recirculation and propelling said collected and recircultating ink through an ion-exchange column and then to an ink supply reservoir and on through the nozzle bores of continuous ink jet print heads.
摘要:
An x-ray imaging detector having an x-ray converter layer, a pixellated detection array closely adjoining the x-ray converter layer, and a substrate supporting the detection array, the substrate having a surface nearest said x-ray converter layer, the substrate including one or more elements having atomic numbers greater than 22, said elements having a total concentration in the substrate of greater than about 1 mole percent relative to the total number of moles of elements having atomic numbers of 22 or less, the substrate having a thickness in the same direction as the thickness of the x-ray converter of less than about 0.2 mm.sup.2 divided by the thickness of the converter in millimeters, the substrate having a dimensionless absorption exponent of greater than about 0.5 and less than about 5 for gamma ray emission of Am.sup.241 at about 60 keV; wherein AE(Am.sup.241 60 keV)=t*(k.sub.1 e.sub.1 +k.sub.2 e.sub.2 +k.sub.3 e.sub.3 + . . . ) wherein AE(Am.sup.241 60 keV) represents the absorption exponent of the substrate relative to the about 60 keV gamma ray emission of Am.sup.241 ; t represents the thickness of the substrate in the principle direction of propagation of the x-ray beam; e.sub.1, e.sub.2, e.sub.3, . . . represent the concentrations of elements in the substrate; and k.sub.1, k.sub.2, k.sub.3, . . . represent the mass attenuation coefficients of the respective elements.
摘要:
A laser-exposed thermal recording element comprising a support having thereon a pigment layer comprising a pigment dispersed in a polymeric binder, the pigment absorbing at the wavelength of a laser used to expose the element, wherein the pigment comprises the formula: Cu.sub.2-x M.sub.x (OH).sub.y R.sub.z :M'.sub.w wherein: M is at least one metal atom, M' is at least one alkali metal, R is at least one anion, w is between 0 and 2, x is between 0 and 1.5, y and z are selected to maintain charge neutrality, with the proviso that w, x and z cannot all be 0.
摘要翻译:一种激光曝光的热敏记录元件,包括其上具有颜料层的载体,所述颜料层包含分散在聚合物粘合剂中的颜料,所述颜料以用于暴露所述元件的激光的波长吸收,其中所述颜料包含式:Cu 2-x M x( OH)y R z:其中:M是至少一个金属原子,M'是至少一种碱金属,R是至少一个阴离子,w在0和2之间,x在0和1.5之间,y和z是 选择以保持电荷中性,条件是w,x和z不能全部为0。
摘要:
A laser-exposed thermal recording element comprising a support having thereon a pigment layer comprising a pigment dispersed in a polymeric binder, the pigment absorbing at the wavelength of a laser used to expose the element, wherein the pigment comprises the formula: M.sub.x A.sub.y Q.sub.z wherein: M is at least one metal atom, A is at least one alkali metal, Q is at least one of oxygen or sulfur, x is an integer between 1 and 3, y is between 0 and about 2, and z is between about 1 and about 4.
摘要翻译:一种激光曝光的热敏记录元件,包括其上具有颜料层的载体,所述颜料层包含分散在聚合物粘合剂中的颜料,所述颜料以用于暴露所述元件的激光的波长吸收,其中所述颜料包含下式:M x A y Q z其中M是 至少一个金属原子,A是至少一种碱金属,Q是氧或硫中的至少一个,x是1和3之间的整数,y在0和约2之间,z在约1和约4之间 。
摘要:
A patient identification x-ray cassette comprising: a cover having a window in the cover with predetermined transmission characteristics; a prompt emission stimulable phosphor coated substrate positioned essentially below the window having a phosphor that is selected to absorb at a first bandwidth and emit at a second bandwidth and the substrate is selected to transmit at least the first bandwidth; an image receiving element sensitive to electromagnetic radiation of the second bandwidth positioned at least below the window; and placing the phosphor coated substrate against the image receiving element. The phosphor is of the type that absorbs energy in the infrared portion of the electromagnetic spectrum and emits energy in the visible portion of the electromagnetic spectrum. The substrate upon which the coating is placed is relatively transparent to infrared wavelengths. The cassette allows for patient identification data to be written onto the x-ray film contained inside the cassette via an infrared source.
摘要:
In accordance with the invention, an apparatus for diagnostic radiographic imaging comprises an x-ray source for providing an exposing dose of x-rays and a first radiation receptor for detecting imagewise modulated x-rays are emitted from the x-ray source and from an imaging object interposed between the source and the first receptor; the first receptor thereby provides a first image of the object. A second radiation receptor for detecting imagewise modulated x-rays that are emitted from the first receptor is situated behind the first receptor and comprises x-ray converter means and detector means for detecting a converted x-ray image; the second receptor provides a digital second image of the object. Also in accordance with the invention, a method for forming two diagnostic radiographic images from a dose of x-rays comprises exposing an imaging object interposed between an x-ray source and a first radiation receptor and detecting by the first receptor imagewise modulated x-rays emitted from the x-ray source and the object; a first image of the object is thereby provided. Imagewise modulated x-rays emitted from the first receptor are detected by a second imaging receptor that is situated behind the first receptor and comprises x-ray converter means and detector means for detecting a converted x-ray image; a digital second image of the object is thereby provided.
摘要:
A storage phosphor imaging system comprising: a source for producing stimulating radiation directed to a storage phosphor storing a latent image; a resonant microcavity converter for converting emitted radiation from the storage phosphor to radiation at a longer wavelength than the emitted radiation but with an angular intensity distribution that is substantially narrower than a Lambertian distribution; and a detector for detecting the longer wavelength radiation.
摘要:
A method for erasing noise and a residual image in a storage phosphor, comprising: reading out an exposed storage phosphor which is transported in a first direction by scanning the storage phosphor in a line scan direction perpendicular to the first direction, with a reciprocating stimulating beam of light which causes the storage phosphor to emit light in a first frequency range, the beam of light being suppressed during retrace; erasing the storage phosphor after the reading out with light of a second frequency range and additionally with light of the first frequency range during retrace when the stimulating light beam is supressed.
摘要:
A laser-exposed thermal recording element comprising a flexible support having thereon the following imaging layers in sequence: a) an electrically conductive layer, and b) an electro-deposited black layer, with the proviso that the sum of the optical densities of layers a) and b) is between about 0.5 and about 5.