Abstract: An optical scanning device is provided, which is compact-sized and lightweight, and, which consumes less power. A movable member of the device is supported on a fixed member via a swing axis provided on the fixed member. On an upper surface and along an axial line of swing of the movable member, there are disposed a light emitting unit and a light receiving unit. When an AC current flows through a coil provided in the movable member, electromagnetic force acting on the coil when traversing a magnetic circuit comprising a yoke and a permanent magnet both provided on the fixed member urges the movable portion to swing around its swing axis at a predetermined cycle. A laser bean L from the light emitting unit scans a bar code and a reflected light L′ from the bar cord is received by the light receiving unit thereby reading information of the bar code.

Abstract: The present invention provides a laser module that can maintain weldability of a lens holder and improve machinability, and it protects a burr from being induced, and thereby improves optical accuracy, improves a reading accuracy of a bar code, improves mass productivity and reduces a manufacturing cost. In a laser module for a bar code reader, which has a packaged structure including a light emitting element and a light projection lens, for collecting a beam emitted from the light emitting element through the light projection lens and irradiating to an irradiation target, it includes: a cylindrical housing, in which the light emitting element is engaged with one end side; and a cylindrical lens holder, which is engaged with the other end side of the housing, for holding therein the light projection lens.

Abstract: A light emitting and receiving device structure capable of compactly accommodating a light emitting element and a light receiving element and having an optical axis of an emitted beam of light in close proximity to an optical axis of a return beam of light to produce the light emitting and receiving device in a miniature size and lightweight. A one-piece structure consists of a cylindrical package having a bottom with its one end open and the other end closed with a bottom plate and a protruding pedestal member which is installed on the bottom plate of the package with its centerline concentric with the centerline of the package. The light receiving element is secured to the front end surface of the pedestal member, while the light emitting element is secured to the side face of the pedestal member, thus accommodating both devices in one package.

Abstract: Disclosed is a movable mirror driving mechanism for bar code reader capable of optimizing the coil as a whole as compared to a conventional single coil commonly used for driving and electromotive force detection purposes. The movable mirror driving mechanism for bar code reader is a type in which the laser beam emitted from the light emitting element is reflected by the movable mirror, the movable mirror is oscillated to make the laser beam scan across the object to be scanned and ight returned from the object to be scanned is reflected off the movable mirror to be received by the light receiving element. The movable mirror driving mechanism for bar code reader comprises the movable mirror supported to oscillated about the pivot, the magnetic member firmly attached to the movable mirror and the coil interlinking with magnetic flux of the magnetic member.

Abstract: A bar code reader includes a light emitting element, a movable mirror operative, by oscillation, to reflect outgoing light from the light emitting element to cause reflected light to scan an object to be illuminated and to further reflect the reflected light of the outgoing light having illuminated the object, and a light receiving element arranged to detect the reflected light reflected off the movable mirror and convert a detected beam into an electrical signal. The movable mirror comprises a glass substrate and a dielectric multilayer film laminated on the glass substrate. The dielectric multilayer film is formed by alternating layers of a high refractive index material and a low refractive index material at an optical thickness &lgr;/4, where &lgr; is the wavelength of the outgoing light.

Abstract: An optical device for bar-code reading capable of improving the degree of freedom in design of component lenses so as to allow free positional adjustment of the lenses while ensuring downsizing and weight reduction of the device per se, and a method for manufacturing thereof are disclosed. An optical device for bar-code reading comprises a light emitting element; a light projection lens for focusing light from the light emitting element so as to irradiate a bar code; a light receiving lens for focusing reflected light from the bar code and having formed therein a penetrating hole which penetrates a plane of incidence of light and a plane of outgoing of light, in which the light projection lens is inserted; and a light receiving element for receiving the light focused by the light receiving lens so as to perform photo-electric conversion.

Abstract: An apparatus is provided comprising: a record and/or playback units having a first circuit board provided with a grounding potential unit; a cover body pivotably mounted to the record and/or playback unit and including a shield member connected to the grounding potential unit and a second circuit board connected to the first circuit board; a holder made of a metallic material and arranged to travel between the location for loading a recording medium into the record and/or playback unit and the location spaced away from the record and/or playback unit as the cover body is pivotably moved, and a grounding member made of a metallic material, provided with an engaging portion for engagement with the shield member and a contact for coming into direct contact with the holder, and connected to the shield member to urge the cover body in a direction of the holder pivotably turning.

Abstract: An apparatus is provided comprising: a record and/or playback units having a first circuit board provided with a grounding potential unit; a cover body pivotably mounted to the record and/or playback unit and including a shield member connected to the grounding potential unit and a second circuit board connected to the first circuit board; a holder made of a metallic material and arranged to travel between the location for loading a recording medium into the record and/or playback unit and the location spaced away from the record and/or playback unit as the cover body is pivotably moved, and a grounding member made of a metallic material, provided with an engaging portion for engagement with the shield member and a contact for coming into direct contact with the holder, and connected to the shield member to urge the cover body in a direction of the holder pivotably turning.

Abstract: An optical scanning device is provided, which is compact-sized, light-weighted and consumes less power. A movable member of the device is supported on a fixed member via a swing axis provided on the fixed member. On an upper surface and along an axial line of swing of the movable member, there are disposed a light emitting unit and a light receiving unit. When an AC current flows through a coil provided in the movable member, electromagnetic force acting on the coil when traversing a magnetic circuit comprising a yoke and a permanent magnet both provided on the fixed member urges the movable portion to swing around its swing axis at a predetermined cycle. A laser bean L from the light emitting unit scans a bar code and a reflected light L′ from the bar cord is received by the light receiving unit thereby reading information of the bar code.

Abstract: An apparatus is provided comprising: a record and/or playback units having a first circuit board provided with a grounding potential unit; a cover body pivotably mounted to the record and/or playback unit and including a shield member connected to the grounding potential unit and a second circuit board connected to the first circuit board; a holder made of a metallic material and arranged to travel between the location for loading a recording medium into the record and/or playback unit and the location spaced away from the record and/or playback unit as the cover body is pivotably moved, and a grounding member made of a metallic material, provided with an engaging portion for engagement with the shield member and a contact for coming into direct contact with the holder, and connected to the shield member to urge the cover body in a direction of the holder pivotably turning.

Abstract: An apparatus is provided comprising: a record and/or playback units having a first circuit board provided with a grounding potential unit; a cover body pivotably mounted to the record and/or playback unit and including a shield member connected to the grounding potential unit and a second circuit board connected to the first circuit board; a holder made of a metallic material and arranged to travel between the location for loading a recording medium into the record and/or playback unit and the location spaced away from the record and/or playback unit as the cover body is pivotably moved, and a grounding member made of a metallic material, provided with an engaging portion for engagement with the shield member and a contact for coming into direct contact with the holder, and connected to the shield member to urge the cover body in a direction of the holder pivotably turning.

Abstract: The invention provides a printed-wiring board that is capable of preventing the lift-off phenomenon without changing the related process for fabricating related printed-wiring boards. A printed-wiring board of the present invention has the structure in which land portions are formed on both sides (front side and back side) of a board, a through hole is formed through the board, and an electrically conducting layer is formed on the inside peripheral surface of the through hole by means of plating to connect between the above-mentioned land portions of a wiring pattern, wherein the entire surface of the land part including the opening circumference of the through hole is covered with an insulating layer that covers the other part of the wiring pattern on the component side and on the other hand the land part is not covered with an insulating layer and remains exposed on the soldering side.

Abstract: A cassette loading apparatus having a cassette holder for holding a tape cassette and driven by a gear train to move the tape cassette to a predetermined loading position includes a pair of gears in engagement with each other in the gear train, at least one of the pair of gears being formed as a geneva stop gear, a locking member provided on one of the pair of gears, and a cam formed on the other gear being in engagement with the locking member. The cam has an increased length, so that when the pair of gears are in engagement the locking member is restricted by the cam and when the pair of gears are disengaged from each other by the geneva stop gear, a rotational ratio substantially equal to a gear ratio of the pair of gears is applied to the pair of gears by the cam and the locking member. In this way when the cassette holder is moved to the loading position the locking member comes in contact with the cam, thereby locking the cassette holder.

Abstract: A tape cassette for use with a thermal printing apparatus includes a cassette housing; supply and take-up reels rotatably mounted in the cassette housing; tape having a pigment thereon wound about the supply and take-up reels and having a segment extending between the reels, the length of the segment being adjustable; a hollow projecting portion extending from the cassette housing and having a free end at which a first guide pin is connected; a second guide pin moveably mounted, in a sliding or pivotal relation, with respect to the cassette housing for guiding the segment of tape; and optionally, a tape drawing member to which the second guide pin may be connected and which is moveable with respect to the cassette housing for adjusting the length of the segment of tape.

Abstract: A thermal printing apparatus includes a platen about which a sheet of paper is circumferentially embraced; a head transfer carriage mounted on guide rails of the apparatus for slidable movement in the lengthwise direction of the platen; a thermal head assembly mounted only on one guide rail so as to move with the head transfer carriage in the lengthwise direction of the platen while also being adapted to pivot about the guide rail toward and away from the platen, such that a tape from a tape cartridge is positioned between the thermal head assembly and the paper so that as the thermal head assembly moves along the platen, it selectively heats the tape in response to an information signal to transfer the pigment from the tape onto the paper and thereby record visual information on the paper; a tape clamp device including a lever pivotally mounted to the apparatus, an elastic plate fixedly mounted to the apparatus, and a spring which biases the lever toward the elastic plate to clamp the tape therebetween durin