Abstract:
A drum scanning type image reading apparatus includes an illumination optical system and an imaging optical system. The illumination optical system is an optical system for irradiating light upon an original. A variable aperture stop is disposed at a conjugate position with the original. In the imaging optical system, a pick-up lens focuses an image of an image reading region of the original on an image focusing surface, and photomultiplier tubes read light passing through one of holes which are formed in a main aperture plate which is disposed on the image focusing surface. To change an image reading resolution in the image reading apparatus, the image reading region and an illumination region are changed by changing the aperture size of the main aperture plate and the size of the variable aperture stop.
Abstract:
The invention disclosed a scanner with the function of providing transmitted light source and reflective light source which can be adapted to the location of a floppy diskette driver of a computer. The invention mainly includes a double-function carriage loaded with a transmitted light source and a reflective light source and a gap therebetween for allowing a transparent document tray to pass through. When scanning, a driving device moves the double-function carriage in longitudinal direction along the sheet to complete the exposure of the entire sheet.
Abstract:
A transparent adapter hinged to a flatbed scanner for the scanning of a transparency or negative, including a hot cathode-ray tube to provide light, a refractor mounted around the hot cathode-ray tube to refract light from the hot cathode-ray tube onto a document, for permitting the image of the document to be picked up by a charge-coupled device in the optical scanner, and to prevent light from being directly projected by the hot cathode-ray tube onto the document.
Abstract:
A scanning apparatus providing separate fixed focal planes for transmissive and reflective original documents to be scanned, wherein a scan carriage containing illumination, sensor, and optical elements is moved together to scan an original document and to obtain a digitized representation thereof. The movable scan carriage has an illumination source disposed between the reflective and transmissive object focal planes, with the object focal plane to be used selected by changing the position of one or more optical elements within the scan carriage. The resolution of the digitized representation of the scanned original document can be determined by rotation of at least one lens about an axis substantially perpendicular to its optic axis.
Abstract:
A conventional flat bed greyscale digitizing scanner which operates in conjunction with reflective media is retrofitted with an adapter assembly which permits it additionally to process X-ray film transparencies. Accordingly, the resulting apparatus, in addition to performing digitization of data imprinted on reflective media, is also capable of digitizing X-ray images on X-ray film transparencies. The adapter assembly is constucted to be easily mounted on a conventional flat bed scanner to permit the scanner to process the film transparencies, and to be easily removable from the conventional scanner to permit the scanner to operate in a conventional mode to process reflective media. The scanner may be constructed to perform transparency digitization and to provide an optical density dynamic range greater than the prior art CCD technology used in the more expensive machines will allow.
Abstract:
An image sensor unit includes a reflection reading light guide that emits light from a reflection reading light source toward the bill, a transmission reading light guide that emits light from a transmission reading light source toward the bill, an imaging element that focuses light from the bill, and a light receiving element that receives light that is collected by the imaging element. The transmission reading light source and the transmission reading light guide are disposed on the opposite side of a conveyance path through which the bill can pass, for the reflection reading light source and the reflection reading light guide, and a light blocking member that blocks a part of the light from the reflection reading light guide is disposed between the reflection reading light guide and the transmission reading light guide.
Abstract:
Transparency imaging systems and methods. One embodiment of the transparency imaging system comprises an imaging surface and a cover mounted adjacent the imaging surface. A media adapter is provided as part of the cover, and a chamber is formed in the media adapter. At least one template is receivable within the chamber formed in the media adapter, the at least one template loading the transparency media in the media adapter adjacent the imaging surface for an imaging operation.
Abstract:
A document photosensor is provided which comprises upper and lower sensor assemblies 1 and 2 disposed on opposite sides of a passageway 55 along which a document 50 is transported. Upper sensor assembly 1 comprises an upper substrate 11, an upper LED chip 21 surface-mounted on upper substrate 11 and an upper PD chip 37 surface-mounted on upper substrate 11. Lower sensor assembly 2 comprises a lower substrate 12, a lower LED chip 31 surface-mounted on lower substrate 12 and a lower PD chip 38 surface-mounted on lower substrate 12. These chips 21, 37, 31 and 38 are secured at precise locations on upper and lower substrates 11 and 12 with accuracy on the order of a few micrometers or less to exactly detect by upper and lower PD chips 37, 38 lights irradiated from upper and lower LED chips 21 and 31 after penetration of these lights through particular points on a bill 50 moved along passageway 55 to improve validation performance of bill 50.
Abstract:
A scanning method of scanning apparatus and a scanning apparatus are provided. Firstly, when the scanning apparatus is in the default reflective document scanning state and a document is placed in the scanning apparatus, the scanning apparatus automatically activates reflective document scanning function to perform scanning. Next, a document holder is disposed in the feeding entrance of the scanning apparatus, wherein after the scanning apparatus activates the transmissive document scanning state and the document is placed in the document holder, the scanning apparatus automatically activates transmissive document scanning function to perform scanning. The scanning method automatically activates corresponding scanning function without performing document recognition, incurs lower power consumption, produces fast recognition, and is applicable to various scanning apparatuses having both reflective document and transmissive document scanning function. The scanning apparatus has well-designed structure, incurs lower manufacturing cost, and does not require complicated light emitting element and light measuring element.
Abstract:
A document photosensor is provided which comprises upper and lower sensor assemblies 1 and 2 disposed on opposite sides of a passageway 55 along which a document 50 is transported. Upper sensor assembly 1 comprises an upper substrate 11, an upper LED chip 21 surface-mounted on upper substrate 11 and an upper PD chip 37 surface-mounted on upper substrate 11. Lower sensor assembly 2 comprises a lower substrate 12, a lower LED chip 31 surface-mounted on lower substrate 12 and a lower PD chip 38 surface-mounted on lower substrate 12. These chips 21, 37, 31 and 38 are secured at precise locations on upper and lower substrates 11 and 12 with accuracy on the order of a few micrometers or less to exactly detect by upper and lower PD chips 37, 38 lights irradiated from upper and lower LED chips 21 and 31 after penetration of these lights through particular points on a bill 50 moved along passageway 55 to improve validation performance of bill 50.