Abstract: An imaging apparatus include a lens, a first blade slidable between a covering position where the first blade covers the front side of the lens and a retract position where the first blade retracts from the front side of the lens, and a second blade pivotally supported by the first blade, the second blade moving along with the first blade between the covering position and the retract position in response to the slide motion of the first blade, the second blade rotating relative to the first blade in such a way that the second blade more largely overlaps with the first blade in the retract position than in the covering position.

Abstract: An imaging apparatus include a lens, a first blade slidable between a covering position where the first blade covers the front side of the lens and a retract position where the first blade retracts from the front side of the lens, and a second blade pivotally supported by the first blade, the second blade moving along with the first blade between the covering position and the retract position in response to the slide motion of the first blade, the second blade rotating relative to the first blade in such a way that the second blade more largely overlaps with the first blade in the retract position than in the covering position.

Abstract: Disclosed is an imaging apparatus that includes a table rotating device rotationally drives a disc-shaped recording medium; a pickup device capable of recording an information signal of an image corresponding to light from a subject; and an external case having a disc enclosure portion and the pickup device. The imaging apparatus further includes a disc cover rotatably attached to the external case; and a cover opening/closing mechanism capable of locking and unlocking the disc cover. In the imaging apparatus, the cover opening/closing mechanism includes a fixed claw integrally provided with the disc cover and a locking claw rotatably supported on one of the external case and a case-side member fixed to the external case, the fixed claw protruding in a direction substantially perpendicular to a main surface of the disc cover, and a convex portion protruding toward the disc cover provided at a front end of the fixed claw.

Abstract: A disk cartridge device includes first and second disk cartridges of different sizes for housing therein disks of different disk diameters and a cassette compartment onto which the first and second disk cartridges are selectively loaded, the cassette compartment including a pair of positioning pins having height-deciding bases for properly placing the first disk cartridge and a pair of positioning pins having height-deciding bases for properly placing the second disk cartridge, wherein the first disk cartridge has stepped escape holes formed on its lower surface to enable itself to escape from the positioning pins by which the second disk cartridge is properly positioned in the loading state when positioning holes of the first disk cartridge are properly fitted into positioning pins and the height is properly decided.

Abstract: A disk cartridge device by which a plurality of kinds of disk cartridges of different sizes can be selectively located at respective desired positions of height and thereby loaded onto a single recording and reproducing device.

Abstract: A disk cartridge device includes first and second disk cartridges of different sizes for housing therein disks of different disk diameters and a cassette compartment onto which the first and second disk cartridges are selectively loaded, the cassette compartment including a pair of positioning pins having height-deciding bases for properly placing the first disk cartridge and a pair of positioning pins having height-deciding bases for, properly placing the second disk cartridge, wherein the first disk cartridge has stepped escape holes formed on its lower surface to enable itself to escape from the positioning pins by which the second disk cartridge is properly positioned in the loading state when positioning holes of the first disk cartridge are properly fitted into positioning pins and the height is properly decided.

Abstract: A disk cartridge device includes a plurality of disk cartridges with disks having different disk diameters and each being stored in cartridge housings having different sizes, a recording and reproducing device with the plurality of disk cartridges having different sizes selectively mounted, pairs of positioning pins having a base for determining the height for positioning each of the disk cartridges having different sizes onto the recording and reproducing device and positioning holes on one surface of the disk cartridges having different sizes, to be respectively engaged with the pairs of the positioning pins so as to be positioned. The position of the positioning holes of the disk cartridge having a small disk diameter is disposed outside the disk circumference of the disk cartridge having a large disk diameter.

Abstract: There is obtained a disk cartridge apparatus in which when a plurality of disk cartridges which are different in size and thickness are loaded on a drive device, the heights of respective switch detection surfaces of disk cartridges can be horizontally aligned with a mode detection switch of the drive device.

Abstract: A disk cartridge and its loading method in which loading recessed portions can easily be secured and mis-loading and mis-insertion of the disk cartridge can be prevented, wherein the disk cartridge has at its left and right side end portions on the insertion side formed as a pair of loading recess portions and one loading recess portion is hidden by a shutter plate that has been placed in the closed state.

Abstract: There can be obtained a disk cartridge and its loading method in which, when a disk cartridge is miniaturized, loading recessed portions can easily be secured and mis-loading and mis-insertion of the disk cartridge can be prevented. A disk cartridge in which a disk cartridge 1 has at its left and right side end portions on the insertion side formed a pair of loading recess portions 11a, 11b and one loading recess portion 11b is hidden by a shutter plate 7 which is placed in the closed state.

Abstract: There are obtained a disk cartridge apparatus and a disk cartridge in which a disk cartridge having a different format is made unable to be inserted into a drive apparatus from a mechanism standpoint so that a user can instantly recognize that the disk cartridge having the different format has been inserted into the drive apparatus by mistake. A disk cartridge apparatus and a disk cartridge include a first disk cartridge and a second disk cartridge having cartridge housings of the same shape to store therein disks of the system that can be recorded and read by light of red laser beams and light of blue laser beams. When the first disk cartridge is inserted into a first drive apparatus 19, a discriminating groove of the first disk cartridge becomes identical to a discriminating convex portion 20 of the first drive apparatus 19 to enable the first disk cartridge to be loaded on the first drive apparatus.

Abstract: There is obtained a disk cartridge apparatus in which when a plurality of disk cartridges which are different in size and thickness are loaded on a drive device, the heights of respective switch detection surfaces of disk cartridges can be horizontally aligned with a mode detection switch of the drive device.

Abstract: A tape recording apparatus has a chassis, a rotary head rotatably mounted on the chassis to record a signal on or to reproduce a signal from a magnetic tape in a tape cassette, a reel base mounted on the chassis for supporting the tape cassette, a tape loading block movably mounted on the chassis for drawing the tape from the tape cassette and holding the tape against the rotary head, and a head cleaning mechanism including a rotatable cleaning roller mounted on the chassis for movement into and out of contact with the rotary head. The rotatable cleaning roller comprises a rotatable shaft and a plurality of flaps fixed radially to the rotatable shaft. Each of the flaps comprises a flexible lapping tape coated with an abrasive material. The head cleaning mechanism also has a swing arm assembly angularly movably mounted on the chassis for moving the cleaning roller into contact with the rotary head to clean the rotary head in response to operation of the tape loading block.

Abstract: A cassette tape cassette loading system is provided with a tape cassette holder which is movable between a first position in which the tape can be withdrawn from the tape cassette and disposed in a tape path including a record replay head and a second position in which the cassette can be removed or inserted into the holder. A detent mechanism is provided for cooperation with a cam formed integrally with the cassette holder to define an intermediate position between the first and second positions of the holder at which intermediate position the cassette cannot accidentally be caused to fall out of the tape cassette loading system and be damaged. When the tape cassette is to be removed from the tape cassette loading system, the holder is manually actuated to the second or fully open position and the tape is removed manually. With this constriction, the need for a heavy cassette holder damping unit is eliminated.

Abstract: A tape tension mechanism for a recording and reproducing apparatus having a supply reel table and a take-up reel table, in which a tension arm is provided at the supply reel side and rotatably mounted thereon, a brake mechanism for the supply reel table is coupled to the tension arm, and the tension arm is biased by a tension spring so that the brake mechanism performs a braking operation, the tape tension mechanism further includes a movable operation member to which a fixed end of the tension spring for biasing the tension arm is connected, wherein the fixed end of the tension spring is moved close to and apart from a pivot of the tension arm.

Abstract: A tape cassette loading system for wrapping a magnetic tape about a magnetic rotary head drum of a recording and/or reproducing apparatus is provided. The loading system includes two tape guiding elements for withdrawing the tape from a tape cassette towards the rotary head drum and their tape guiding track members provided around the drum in order to define tape loading paths. One of the tape loading path slopes downwardly from a loading stand-by state position. The other tape loading path slopes upwardly from the loading stand-by state position. The movement of the two guiding elements traveling in their loading paths allows the tape to be wrapped helically about the drum. The height drum may therefore be reduced and the recording and/or reproducing apparatus can be made smaller.

Abstract: A cassette compartment of a compact type recorder or player comprises an outer cassette holder and an inner cassette holder. The cassette is moved from a popped-up position to a set position and then to a loading position. The cassette is inserted at the popped-up position into the inner holder which is set down to the set position together with the outer holder. The inner holder is then moved straightforward to carry the cassette at the loading position. The inner holder is interlocked with the outer holder which is spring-urged to the popped-up position and is releasably locked at the set position.