Abstract:
An apparatus for scanning a document, including scanning a photograph, the apparatus including a contact image sensor (CIS), the apparatus designed to reduce the friction between the contact image sensor and the document being scanned. The reduction is achieved by reducing the friction by use of a non-stick material or by reducing the static electricity forces or both. The preferred embodiment is a CIS whose housing is made of a non-stick material which also is static electricity dissipative.
Abstract:
PROBLEM TO BE SOLVED: To provide an image sensor unit capable of acquiring stable image data even if illuminance changes as a light emission wavelength in the infrared range has a temperature shift due to change in ambient temperature, and an image reader.SOLUTION: When a bill 4 is identified by an illumination device comprising a light guide body 11 made of synthetic resin and a light source 10 including a light emitting element having a light emission wavelength in the infrared range as a main wavelength, white reference plates 20 are provided at positions where the outsides of image areas at both ends of a rod lens array 12 which extend over the bill 4 are covered, a correction coefficient calculated by making illuminance corrections so that IR correction data is substantially the same as IR reference data previously stored in a storage circuit A of a signal processing part is found based upon IR white reference data indicative of reference illuminance of white generated with reflected light from the white reference plates 20, and this correction coefficient is used to correct IR image data during a read of the bill 4.
Abstract:
An apparatus for scanning a document, including scanning a photograph, the apparatus including a contact image sensor (CIS 401), the apparatus designed to reduce the friction between the contact image sensor (401) and the document (103) being scanned. The reduction is achieved by reducing the friction by use of a non-stick material (661, 771, 881) or by reducing the static electricity forces or both. The preferred embodiment is a CIS whose housing is made of a non-stick material which also is static electricity dissipative.
Abstract:
An illumination device includes a light guide made of plastic, and a light source including a light emitting element whose dominant wavelength is a light emission wavelength in an infrared region, and identifies a banknote. White reference plates are provided at positions that are at opposite ends of a rod lens array and cover respective areas external to an image region across the banknote. A correction coefficient is acquired by calculation. The calculation is made by correcting an illuminance such that IR correction data is substantially identical to IR reference data preliminarily stored in a memory circuit in a signal processor on the basis of IR white reference data representing a white reference illuminance generated from light reflected from the white reference plates. The correction coefficient is used for correcting IR image data when the banknote is read.
Abstract:
PROBLEM TO BE SOLVED: To provide a light-emitting unit which emits light efficiently without regard to the shape of the opening window of a light-emitting element substrate frame material, and to provide an illuminating device using the same unit, image sensor and image reading apparatus. SOLUTION: The light-emitting unit comprises a light-emitting element, a light-emitting element substrate mounting the light-emitting element, and the light-emitting element substrate frame material having the opening window for exposing the light-emitting element. Inside of the opening window is shielded with first resin and the second resin, and the ratio of the second resin to the first resin becomes smaller from the inside of a light-emitting window toward the outside of the light-emitting window. The first resin is transparent resin, and the second resin is color resin of high brightness or resin containing a light-reflecting and/or dispersing material. A cross-sectional boundary line of the first resin and the second resin is a curved line, so that light reflected by the bottom surface of the opening window among light outgoing from the light-emitting element also can outgo to outside efficiently. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a light-emitting unit for a luminaire having superior heat radiation performance. SOLUTION: The light-emitting unit comprises: a light-emitting element; a light-emitting element substrate for mounting the light-emitting element; a light-emitting element substrate frame material having an opening window for exposing the light-emitting element; and electrodes for feeding power to the light-emitting element. In this case, the light-emitting substrate is a metal, and the light-emitting element is mounted onto the light-emitting element substrate directly. Alternatively, the light-emitting element substrate is a metal, a metal oxide film is provided on the light-emitting element substrate, and the light-emitting element is mounted on the electrode formed on the metal oxide film. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent a sensor chip from being broken, even if only one sensor chip is used. SOLUTION: A sensor chip is provided with a group of photoelectric transfer elements for converting light signals from a medium to be read to electrical signals and reads out the electrical signals, which are converted by the photoelectric transfer elements or signals according to these signals. The sensor chip is placed on a support board, which is provided with a driver for controlling the drive of the sensor chip. COPYRIGHT: (C)2003,JPO
Abstract:
PURPOSE: An image sensor unit and an image reading apparatus are provided to perform illumination correction in case a temperature shift is generated in a light emitting wavelength of an LED(Light Emitting Diode). CONSTITUTION: A white reference data generating circuit(C) generates white reference data for indicating reference illumination of white. A correction data generating circuit(D) generates correction data based on white standard data. The correction data indicates reference illumination of white. A comparison circuit(E) calculates a correction coefficient from the correction data.