Abstract:
The image scanning apparatus includes a light source including at least one light emitting diode (LED) to irradiate light to a document which is a scan target, a light source control unit to control a lighting-up point of time of the light source, an image sensor to transform an image formed by light reflected from the document into an electric signal according to a result of controlling the lighting-up point of time, and an output unit to output image data corresponding to the transformed electric signal.
Abstract:
The image scanning apparatus includes a light source including at least one light emitting diode (LED) to irradiate light to a document which is a scan target, a light source control unit to control a lighting-up point of time of the light source, an image sensor to transform an image formed by light reflected from the document into an electric signal according to a result of controlling the lighting-up point of time, and an output unit to output image data corresponding to the transformed electric signal.
Abstract:
An optical reading document board, an image reading apparatus, and an image forming apparatus, the optical reading document board including a platen formed of transparent glass and having a top surface on which a document is placed, and a reflectance reduction layer coated on a bottom surface of the platen and having a refractive index different from a refractive index of the platen.
Abstract:
A scanner module comprises an illuminator configured to illuminate a document by emitting light onto the document. The illuminator comprises a light source configured to emit the light and a light guide unit configured to guide the light emitted from the light source to illuminate at least two areas on the document, the center positions of the at least two areas on the document being spaced apart from each other.
Abstract:
An illuminating light source, and a scanner module and an image scanning apparatus including the same. The illuminating light source includes: a vacuum tube have a cylindrical shape, is filled with a discharging gas, and has a light emitting portion disposed in a lengthwise direction thereof; a discharging electrode disposed upon the vacuum tube, and having a width that increases from a center portion to end portions thereof; and a fluorescent body disposed within the vacuum tube, to absorb first light beams emitted by the discharging gas and to emit second light beams having a longer wavelength than the first light beams, with the second light beams being illuminated through the light emitting portion.
Abstract:
A scanning apparatus and a reference light quantity determining method includes scanning a patch that does not overlap previously established reference colors but displays each of the previously established reference colors in a plurality of regions that are spaced a portion from each other, and determining reference light quantities based on the scanning result.
Abstract:
A scanner module includes an illumination optical unit which illuminates light to an object, a plurality of reflecting mirrors which reflect a light beam from the object and change a light path, a sensor unit which reads information about the object from the incident light beam, a focusing lens unit which is disposed between the plurality of reflecting mirrors and the sensor unit and focuses the light beam reflected from the plurality of reflecting mirrors onto the sensor unit, and a ghost image preventing unit which is formed on at least one of the plurality of reflecting mirrors and controls a ghost image from being directed to the sensor unit.
Abstract:
An image scanning apparatus and method. The image scanning apparatus which scans an image of document includes a light source including at least three light emitting elements of red, green, and blue, which are sequentially lit up at intervals of a first time, a light emitting time control unit to control a light emitting time of the at least three light emitting elements such that the first time is shorter than a second time by a predetermined value, a sensor array to transform an image formed by light reflected from the document into an electric signal according to results of the control of the light emitting time and the light intensity, and an output unit to output image data corresponding to the transformed electric signal.
Abstract:
An image scanning apparatus and method. The image scanning apparatus which scans an image of document includes a light source including at least three light emitting elements of red, green, and blue, which are sequentially lit up at intervals of a first time, a light emitting time control unit to control a light emitting time of the at least three light emitting elements such that the first time is shorter than a second time by a predetermined value, a sensor array to transform an image formed by light reflected from the document into an electric signal according to results of the control of the light emitting time and the light intensity, and an output unit to output image data corresponding to the transformed electric signal.
Abstract:
An optical reading document board, an image reading apparatus, and an image forming apparatus, the optical reading document board including a platen formed of transparent glass and having a top surface on which a document is placed, and a reflectance reduction layer coated on a bottom surface of the platen and having a refractive index different from a refractive index of the platen.