Abstract: A disk holder, which is detachable from a case with an optical disk being held by the disk holder, is detachably fitted to a case of a disk cartridge. The disk holder is detached from the case with the optical disk set in the retained state, and the disk holder, together with the optical disk, is loaded into a case of an adapter cartridge. The adapter cartridge is so shaped and dimensioned as to be fitted to a disk drive for driving an optical disk greater in diameter than the optical disk.

Abstract: A disc cartridge of the open cover type capable of readily accomplishing takeout and insertion of a disc medium with respect to the cartridge while ensuring easiness of assembling thereof and increased reliability in operation thereof. An upper casing member is formed on a side surface thereof opposite from a shutter with a takeout opening which permits a disc medium to be taken out of a casing therethrough. The casing is mounted thereon with a cover for opening and closing the takeout opening. The cover is provided with support shafts disposed on opposite sides thereof. The upper casing member is provided with guide grooves in which the respective support shafts are slidably and pivotally fitted, to thereby permit the cover to be selectively opened. The cover may be provided with a receiving section for slidably receiving an erasure prevention member therein. The disc cartridge may be provided with a discrimination member for detecting whether takeout of the disc medium has been carried out.

Abstract: Arranged in each of spring storing sections on either side of a window section are a retaining spring bearing situated adjacent to the window section and a fixed spring bearing situated at a distance from the window section. A shutter has a pair of movable spring bearings that are situated individually in alignment with the retaining spring bearings when the shutter is in its closed position. A fixed end of each of shutter springs is held by means of the fixed spring bearing. A movable end of each shutter spring engages its corresponding retaining spring bearing and the movable spring bearing in alignment therewith when the shutter is in the closed position, is pressed toward the fixed end and separates from the retaining spring bearing when the shutter moves from the closed position toward one of open positions, and separates from the movable spring bearing and is held by the retaining spring bearing when the shutter moves from the closed position toward the other open position.

Abstract: A case of a disk cartridge contains a disk an optical disk therein and includes an opening portion for exposing part of the optical disk. A shutter for opening/closing the opening portion is slidably attached to the case. A slider movably provided on one side of the case is connected to the shutter, and an urging member for closing shutter is connected to the slider. A belt for pulling the slider is slidably mounted on the case and connected to the slider. The slider includes a connecting portion to which an end portion of the urging member is connected. The connecting portion has an inserting hole into which the end portion of the urging member is inserted, an engagement portion engaged with the end portion of the urging member inserted into the inserting hole, for inhibiting the urging member from coming out of the inserting hole, and a positioning portion for positioning the end portion of the urging member in the inserting hole when the end portion of the urging member is inserted into the inserting hole.

Abstract: An apparatus is capable of reading a character or graphics image on a document at a plurality of reading linear densities. An illuminating device for illuminating the document, a focusing device for focusing the light beam reflected by the document, and a CCD reading sensor for converting the focused light beam into an electric image signal, are integrally assembled together to constitute a carriage device. This carriage device is shifted in a desirable shifting which is determined on the basis of the reading sensitivity of the CCD reading sensor and which corresponds to the linear reading density. The rotation speed of a driving device used for driving the carriage device is reduced to a desirable value by means of a transmission, the conversion ratio of which is determined on the basis of the least common multiple (LCM) of a plurality of reading linear densities. The driving pulses which should be supplied to the driving device can be easily calculated by use of the product of the "reference pulse " .phi.

Abstract: An image reading apparatus reads imae data from an original document when a carriage supporting a line image sensor reciprocates along an original document. When the image reading apparatus is transported, the carriage is secured to the apparatus so that it will not be moved due to vibrations and impacts. A safety device is installed on the reading apparatus so that the apparatus may not be operated with the carriage secured. The safety device checks whether or not the carriage is secured by use of a switch. When the carriage is secured, the safety device turns off the power supplied to the carriage. The safety device also turns off the power supplied to the light source when the carriage securing cover is removed to replace the light source.

Abstract: A line sensor apparatus is adapted to read a character or pattern image on a document. In this apparatus, an illumination device for illuminating the document, a optical lens for focusing the light beam reflected by the document, a CCD line reading sensor for photoelectrically converting the light beam focused by the optical lens into an electric signal, and a holding member for holding the CCD line sensor and the optical lens are assembled as one body in such a manner as to constitute a carriage device. A uniformly radiated heat-radiating plate is in contact with the entire botttom surface of a support for the CCD line sensor, so that the heat generated by the CCD line sensor is radiated from the heat-radiating plate. Further, the CCD line sensor is kept in tight contact with the holding member, so that the heat generated by the CCD line sensor is also radiated from the holding member.

Abstract: An image information reading apparatus comprises a glass plate for supporting an original sheet, a light source unit for illuminating an original sheet placed on the glass plate, a scanner adapted to read image information from the original sheet upon receiving a transmitted light beam from the original sheet, and a drive mechanism for moving the scanner along the original sheet. The light source unit includes a planar light source which is wide enough to substantially uniformly illuminate the whole region of the original sheet to be read by means of the scanner.

Abstract: This image information reading apparatus has a main body and the main body has a platen glass provided on the top surface thereof. The main body includes a scanner having a lamp, a photoelectric transducer, an optical member, etc. When this image information reading apparatus is used for reading two types of original copies, one for reflected light and the other for transmitted light, a transmission unit for illuminating an original for transmitted light is mounted to the main body with first supporting means. This transmission unit serves as an original retainer when an original for reflected light is read. When this image information reading apparatus is used for reading only originals for reflected light, an original cover is mounted to the main body with second supporting means.

Abstract: An image reading apparatus comprises an original table, a lamp located above the original table and used as a first light source for irradiating light to an original placed on the original table, another lamp located below the original table and used as a second light source for irradiating light to the original, and a photoelectric converter for receiving the light passing through the original or the light reflected therefrom, and converting the light into electric signals. Upon the pushing of a passing-light mode key incorporated in a console panel, the first light source is turned on and is moved, together with the photoelectric converter, in a straight line along the original table, in order to read the image formed on the original which is of the type through which light passes.

Abstract: An image reading apparatus comprises an original table, a white plate located above the original table and having a predetermined light transmissivity and a predetermined light reflectivity, a lamp located above the white plate and used as a first light source for irradiating light to an original, placed on the original table, through the white plate, another lamp located below the original table and used as a second light source for irradiating light to the original, and a photoelectric converter for receiving the light passing through the white plate and the original, or the light reflected from the original, and converting the light into electric signals. Upon the pushing of a passing-light mode key incorporated in a console panel, the first light source is turned on and is moved, together with the photoelectric converter, in a straight line along the original table, in order to read the image formed on an original of the type through which light passes.

Abstract: A paper-sheet dividing apparatus has a blade wheel which has a plurality of curved slots. Each curved slot is rotated to sequentially deliver a paper sheet to a conveyor belt. The apparatus also has a dividing member rotated together with the blade wheel and timed such that a corresponding curved slot for receiving the last paper sheet among the first predetermined number of paper sheets to be divided is axially matched with one of the first blades which is positioned between the curved slot which receives the first paper sheet among the second predetermined number of paper sheets and the curved slot which receives the last paper sheet described above. The dividing member is rotated through a predetermined angle and is separated from the blade wheel. During this movement, the paper sheet removed from the blade wheel is temporarily supported on the dividing member.