Abstract: The light-quantity control apparatus includes a base member, and a light-quantity control blade having a light-quantity control portion to control a quantity of light passing through a fixed aperture and a supported portion rotatably supported with respect to the base member. The light-quantity control portion and the supported portion of the light-quantity control blade are each rotated along a plane parallel to the aperture face, an intermediate portion thereof formed between the light-quantity control portion and the supported portion has a tilt with respect to the aperture plane toward the optical axis direction so that the light-quantity control portion is disposed distant from the supported portion in the optical axis direction. Thereby a concave space facing the fixed aperture is formed inside in the radial direction than the light-quantity control blade.

Abstract: An image reading apparatus according to the present invention comprises an image reading unit arranged on a conveying path of a first medium and reading an image on the first medium, a conveying unit conveying the first medium and a second medium to the image reading unit, a width of the second medium being smaller than the first medium, and guide portions guiding the second medium introduced from a discharge port along the conveying path.

Abstract: A multi-feed detection apparatus may include an ultrasonic transmission unit, arranged on one side of a conveyance path configured to convey a sheet-like member, for transmitting an ultrasonic wave toward the conveyance path, an ultrasonic reception unit, arranged on the other side of the conveyance path, for receiving the ultrasonic wave from the ultrasonic transmission unit, and a multi-feed determination unit for determining, based on the reception result of the ultrasonic wave received by the ultrasonic reception unit, whether multi-feed of sheet-like members has occurred. The ultrasonic transmission surface of the ultrasonic transmission unit is inclined with respect to the conveyance path, and the ultrasonic reception surface of the ultrasonic reception unit is arranged to be almost parallel to the conveyance path.

Abstract: There is provided an optical filter or an anti-reflection structure with lower reflection in comparison with the conventional ones by comprising a gradient refractive index thin film 12 with continuous, periodic refractive index change in the film thickness direction and a fine periodic structure 151 lowering reflection, wherein the refractive index of the gradient refractive index thin film 12 in its thickness direction on the substrate side changes so as to become close to that of the substrate, while on the fine periodic structure 111 changes so as to become close to that of the fine periodic structure 151. The optical filter can be used in an optical device or an electronic device display.

Abstract: There is provided an optical filter of the type having absorption and with low reflection, which includes a light-transmitting substrate; and a light-absorbing gradient refractive index thin film provided on the substrate and whose refractive index changes so as to be close to the refractive index of the substrate toward the substrate side in a film thickness direction. There is also provided an optical apparatus using the optical filter.

Abstract: In an image reading system, when an automatic determination mode is designated as a color mode, a scanner does not determine the color of the read image but applies gamma correction to the image data of the image using the first correction characteristic. The scanner transmits the resultant image data to a PC. The PC determines the color of the image indicated by the received image data. When the determined color does not correspond to the first correction characteristic, the PC performs gamma correction of the received image data in accordance with the inverse characteristic of the first correction characteristic and then performs gamma correction using the second correction characteristic corresponding to the determined color.

Abstract: Upon receiving ID card reading mode information from a scanner apparatus, an obverse surface image is output as an image representing the reverse surface of an ID card while a reverse surface image is output as an image representing the obverse surface of the card or an image obtained by rotating the obverse surface image through 180° is output as an image representing the obverse surface of the card while an image obtained by rotating the reverse surface image through 180° is output as an image representing the reverse surface of the card. Alternatively, an image obtained by rotating the obverse surface image through 180° is output as an image representing the reverse surface of the card while an image obtained by rotating the reverse surface image through 180° is output as an image representing the obverse surface of the card.

Abstract: A spectral reflectance in the entire visible wavelength range may be decreased to decrease inconveniences in an image such as flare or ghost. A non-reflective periodic layer including a large number of fine uneven periodic structure bodies is formed on a substrate, and a neutral density (“ND”) film is formed on the other surface of the substrate by vacuum deposition, to improve an anti-reflection function. Regarding a beam entering the ND filter, the MgF2 film of the formed ND film suppresses the spectral reflectance at the boundary of the atmosphere and the ND film and at the boundary of the ND film and the substrate. The non-reflective periodic layer decreases the reflectance at the boundary of the substrate and the atmosphere.

Abstract: The light-amount-adjustment apparatus includes a base member formed with cam-groove portions, and light-blocking blades forming a variable light-passing aperture and each of which is provided with a driving pin and a cam pin, the cam pin engaging one of the cam-groove portions. The apparatus also includes a driving ring disposed on a side of the blades opposite from the base member and rotating with respect to the base member to transmit a driving force to the driving pins so as to rotate the light-blocking blades. A base-member side face of each light-blocking blade is supported by the base member. The driving ring is formed with first blade-supporting portions protruding from a ring-shaped portion outward in a radial direction and including a driving-hole portion with which the driving pin engages. Each first blade-supporting portion supports an opposite-side blade face opposite to the base-member side blade face of a light-blocking blade.

Abstract: An image data transmission apparatus which are capable of improving reliability of log files by ensuring proper storing of log information about transferred image data. A preceding log, which includes information about the transmission of image data, is transmitted to a log file server connected with a scanner via a network. In the scanner, it is determined whether the log file server has succeeded in receiving or storing the preceding log. If the log file server has succeeded in receiving or storing the preceding log, the image data is transmitted to a designated destination of image data transmission.

Abstract: An output image having high visibility for a user is obtained. An effective image region for an image is designated. Whether a direction of the image is visually an upper or lower direction is detected. A header of a source document region in the image is detected. When the direction of the image is the upper direction, the effective image region is output as an output image with reference to the header of the source document region. When the direction of the image is the lower direction, the image is rotated, and the effective image region is output as an output image with reference to the header of the source document region.

Abstract: A sheet conveying apparatus includes an intermediate plate (21b) as a sheet receiving member configured to stack a sheet, a feed roller (22) as a feed rotator configured to feed the sheet stacked on the intermediate plate (21b), and a separation roller (23) as a separation member configured to separate the sheet from a sheet bundle stacked on the intermediate plate (21b). The sheet conveying apparatus further includes a restrict member (60) as a restrict portion disposed so as to reach a position overlapped in a width direction orthogonal to a sheet conveying direction with the feed roller (22) as at least one member among the feed roller (22) and the separation roller (23) and offset in the width direction from the feed roller (22), and restricting a leading end position of the sheet stacked on the intermediate plate (21b).

Abstract: A control program for using a peripheral apparatus is loaded from the peripheral apparatus to the memory of an information processing apparatus. A management program manages the display form of a control object based on execution of the control program. The control object displayed on the information processing apparatus can be switched between the non-display state and the display state. For example, the management program causes the information processing apparatus to execute return from the non-display state to the display state in synchronism with the user manipulation of the peripheral apparatus.

Abstract: The oscillation element according to the present invention includes a torsion bar mounted on a base, and an oscillating member having a light reflection surface for reflecting light from a light source, which is fixed on the torsion bar protruding from the base. The oscillating member oscillates about a longitudinal axis of the torsion bar with an elastic deformation of the torsion bar, thereby deflecting the light that reflects at the light reflection surface in a direction intersecting the longitudinal axis. The oscillating member has two plates that are joined together so as to sandwich the torsion bar. On joining surfaces of the plates are provided with grooves for receiving the torsion bar, respectively. The plates have a symmetrical shape that the longitudinal axis serves as the axis of symmetry.

Abstract: An image reading apparatus including a shading correction mechanism that can be formed by fewer component parts than conventional ones, and is increased in the degree of freedom of design, thereby enabling reduction of the size and weight thereof. A contact glass guides an original to an image reading position. A glass holding member holds the glass. A line image sensor reads an image on the original conveyed to the image reading location, through the contact glass. A reference member is disposed at a location different from the image reading location on the contact glass. A moving mechanism relatively moves the line image sensor and the reference member so that the line image sensor can alternatively read the original conveyed to the image reading location and the reference member. A drive section externally drives the moving mechanism to move the line image sensor and/or the reference member.

Abstract: The image data recording apparatus includes an image data input device, a first write-in device, a second write-in device, and a controller for controlling write-in action to the first and second write-in devices, wherein the controller controls the second write-in device so that when the image data inputted by the image data input device is to be written into the first memory medium inserted into the first write-in device, the inputted image data may be precedingly written into the second memory medium, and controls the first write-in device so that during the ejection of the inserted first memory medium, the image data written into the second memory medium may be written into the first memory medium and also, the control information of the image data may be written into the first memory medium.