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| Number | Title | Issue Date |
| 6502296 | Method of fabricating a light-shielding blade composed of beryllium-aluminum alloy A light-shielding blade material is provided that contributes to increased focal plane shutter speeds. A focal plane shutter has a front blade group and a rear blade group, each being composed of a plurality of light-shielding blades. At least one of thes... | 01/07/2003 |
| 6317287 | Motor with output shaft having lead screw portion and pre-load generating mechanism A motor with a lead screw is provided with a pre-load generating member for canceling backlash in the axial direction, and the lead screw formed with a feed screw groove portion serves as the output shaft of the motor. The pre-load generating mechanism is... | 11/13/2001 |
| 6131840 | Mechanism for preventing uneven take-up of tape A mechanism prevents uneven take-up of a tape on a take-up reel. This mechanism includes a roller guide having a first flange for guiding a first edge of the tape so as to position the tape in a direction perpendicular to a transport direction of the tape... | 10/17/2000 |
| 6001465 | Light shielding blade for camera made of para-orientation aromatic polyamide film A light-shielding blade for use in cameras utilizes a film of para-type aromatic polyamide for its base material. The light-shielding blade has a single-layer structure using an aramid film as its blade material. The film is added with carbon black at a r... | 12/14/1999 |
| 5943119 | Photographic developing/printing apparatus A photographic developing/printing apparatus has analog and digital exposure units arranged midway along the convey path for printing paper to obtain a silver halide photographs upon analog exposure and digital exposure. The apparatus includes a first pap... | 08/24/1999 |
| 5848844 | Fluid bearing It is an object of the invention to provide an inexpensive and high-quality fluid bearing which improves the workability in assembly or coupling of a shaft and a rotator. In order to achieve this object, a fluid bearing according to the invention includes... | 12/15/1998 |
| 5809676 | Sign display apparatus A plurality of sign display units are arranged adjacent to each other along at least one surface in order to form a convex or concave arc curved surface curved with a predetermined radius. In each sign display unit, light-emitting elements are arranged in... | 09/22/1998 |
| 5775791 | Surface emission apparatus The present invention relates to a surface emission apparatus for causing light, emitting from a light source arranged to a side of a light-emitting surface thereof, to emerge from the light-emitting surface. The surface emission apparatus includes a tran... | 07/07/1998 |
| 5699058 | Absolute encoder generating phase-shifted triangular waveforms to produce multi-bit signals An absolute encoder is provided with a movable member, which may be a disc, a photodetector and a processing circuit. The movable member has a plurality of tracks T arranged from higher to lower orders, each track having a bright and dark pattern. The pho... | 12/16/1997 |
| 5669030 | Film feeder for automatic developing machine In a film feeder for use in an automatic developing machine, a cutter control circuit actuates a cutter using electrical energy from a utility power source and electrical energy stored in a capacitor if a film end sensor detects the tail end of a film dur... | 09/16/1997 |
| 5539519 | Compact, high resolution optical displacement detector The optical displacement detecting device utilizes an encoder plate 2 mounted displaceably along a given first plane and having thereon a periodic slit pattern 1. A light source 4 is disposed behind the encoder plate 2 to illuminate the slit pattern 1 to ... | 07/23/1996 |
| 5525955 | Capacitor coupled potentiometer An annular resistor member having two non-contact ends is overlaid and adhered on the surface of a base, and a rotational shaft located at the central portion of the resistor member is pivotally axially supported via a bearing. A bent electrode arm is fit... | 06/11/1996 |
| 5478157 | Printing apparatus A printing apparatus prevents forgery and alteration through lamination formed on a print surface of a medium in a simple structure, and improves the design effect. In the printing apparatus, a print pattern of one frame is stored in a memory component, o... | 12/26/1995 |
| 5438193 | Absolute rotary encoder with slit patterns having bit-coded tracks ranging from higher to lower order An absolute encoder is comprised of a movable member formed thereon with a plurality of slit patterns to define a plurality of tracks (T1, T2) which are bit-coded according to a digital code system such as a binary coded quaternary s... | 08/01/1995 |
| 5408459 | Opening/closing door mechanism for a recording/reproducing apparatus An opening/closing door mechanism including an apparatus having predetermined recording and/or reproducing means for moving a cartridge having a predetermined shape in a substantially parallel state to perform insertion and ejection of the cartridge throu... | 04/18/1995 |
| 5402283 | Recording medium cartridge handling mechanism in library apparatus A hand mechanism of an accessor, capable of gripping a recording medium cartridge in a horizontal condition thereof. The accessor automatically exchanges the recording medium cartridge between a cell unit having a plurality of cells each accommodating the... | 03/28/1995 |
| 5323118 | Hinged displacement sensor This invention comprises two electrode plates 1a and 1c which are arranged in parallel to each other, and a middle electrode plate 1b. One end of an electrostatic capacity member 2 serves as a fixed portion 3 while the other end thereof serves as a movabl... | 06/21/1994 |
| 5315335 | Brake device for focal plane shutter A focal plane shutter comprising a front blade braking lever functioning to press a front blade actuating lever to a rotating shaft thereof by utilizing resilience of a front blade actuating spring at a final stage of an exposure operation performed by th... | 05/24/1994 |
| 5287140 | Control unit for a program shutter A program shutter adapted to close shutter blades having the function of diaphragm blades by a cam member operated with an electric motor has improved control accuracy in high brightness. A blade opening and closing member for opening and closing the shut... | 02/15/1994 |
| 5258797 | Camera shutter device incorporated with lens shifting mechanism The camera shutter device incorporated with lens shifting mechanism comprises a driving motor which is so controlled as to be rotated in the normal direction in the focusing process, and in the reverse and normal directions in the exposure process, a cam ... | 11/02/1993 |
| 5255037 | Shutter blade opening and closing device The camera shutter comprises two shutter blades which have first opening forming portions and second opening forming portions capable of alternatively forming two exposure openings different in area on an exposure aperture. These shutter blades are opened... | 10/19/1993 |
| 5253526 | Capacitive acceleration sensor with free diaphragm The acceleration sensor has a first stationary substrate having a stationary electrode and a second stationary substrate having another stationary electrode and being opposed to the first stationary substrate with a given spacing. An electrically conducti... | 10/19/1993 |
| 5241417 | Multi-layered optical filter film and production method thereof The optical filter is comprised of a thin film having a multi-layered structure free of a substrate. The multi-layered structure is composed of alternately superposed high refractivity layers and low refractivity layers with one another. Each layer has a ... | 08/31/1993 |
| 5200942 | Focus adjusting apparatus for an optical pickup apparatus On a focus adjusting apparatus of an optical pickup apparatus, light reflected by a recording medium is concentrated into two focuses by an optical divider. First and second optical detectors are disposed so that a focus adjusting mechanism is controlled ... | 04/06/1993 |
| 5187361 | Object detection apparatus of the photoelectric reflection type with sampled data The object detection apparatus of the photoelectric reflection type is comprised of an optical source for generating an optical ray, an optical projection system having an optical axis extending through an observation zone along a limited observation rang... | 02/16/1993 |
| 5172152 | Focal plane shutter A focal plane shutter includes a reversing lever mounted on a shaft disposed on a driving lever for opening and closing a blade group constituting the focal plane shutter so that a relative rotation range of the reversing lever with respect to the driving... | 12/15/1992 |
| 5073710 | Optical displacement detector including a displacement member's surface having a diffractive pattern and a holographic lens pattern An apparatus for optically detecting displacement. The light source is provided for emitting a coherent primary light. A displacement member is disposed to undergo a displacement transversely of the primary light to receive the primary light on its face. ... | 12/17/1991 |
| 5062096 | Optical head and tracking method using same An optical head usable also with a WORM-type optical disk device includes a diffracting optical system which is located in the optical path of a light beam and which diffracts the light beam so as to produce at least three diffracted light beams, and thre... | 10/29/1991 |
| 5043753 | Camera shutter blade device The camera shutter device has four blades disposed in overlapping relation to each other and comprised of a pair of dominant blades effective to cover a dominant part of an aperture and another pair of supplementary blades effective to cover the remaining... | 08/27/1991 |
| 4994834 | Focal plane shutter for cameras The forcal plane shutter for cameras is equipped with a first release lever capable of retaining a rear blade group at position to close an exposure aperture, and a second release lever capable of maintaining a front blade group and the rear blade group a... | 02/19/1991 |
| 4987435 | Compact camera with apparatus size adjustment by zooming A compact camera has a zooming lens system for regulating a focal distance and a shutter blade member for opening and closing the lens system. The blade member is shifted forwardly from its rest position to open the lens system through a given shift amoun... | 01/22/1991 |
| 4984474 | Torque sensor A torque sensor for use in detecting torsion of a power steering device or the like of a vehicle. The torque sensor is provided with a first shaft supported for rotation about its axis in a casing, a permanent magnet secured to the first shaft, a second s... | 01/15/1991 |
| 4984003 | Device for opening and closing shutter blade without bounce The device for opening/closing the shutter blade(s) of a photographic camera comprises an electromagnetic actuator coupled with the shutter blade(s) and adapted to open or close the same upon supply of a current from an electrode source through a driver a... | 01/08/1991 |
| 4975722 | Focal plane shutter A focal plane shutter includes a first blade group which is moved forward from an unfolding state to an overlapping state to start an exposure in response to the release of a first blade driving spring and a second blade group which is moved forward from ... | 12/04/1990 |
| 4933793 | Magnetic disc drive A magnetic disc drive in which two magnetic heads, each of which has at least two magnetic gaps, are provided on a single carriage and radially spaced apart from each other by a first predetermined distance. A radially inner one of the two magnetic heads ... | 06/12/1990 |
| 4909497 | Printer paper feed apparatus A printer paper feed apparatus having a single-form feed function and a continuous-form feed function, in which a pin tractor mechanism for feeding the continuous forms is situated upstream of the platen in terms of paper feed. The apparatus includes a gu... | 03/20/1990 |
| 4855850 | Disk drive apparatus with disk rotating means An apparatus for rotating a magnetic disk supported by a disk hub on its central portion includes a spindle shaft rotated by a driving motor and inserted through a central hole of the disk, a rotating member fixed coaxially to the spindle shaft for corota... | 08/08/1989 |
| 4851871 | Driving unit using electrostrictive element A driving unit using an electrostrictive element drives mechanical members such as, for example, a diaphragm and a shutter or a shutter blade having the function of a diaphragm blade by deformation of the electrostrictive element produced when a voltage i... | 07/25/1989 |
| 4820950 | Fluid Bearing A dynamic pressure-type fluid bearing usable in a polygon mirror scanner for a laser beam printer includes a sleeve having an inner peripheral surface and a bottom face, and a journal having an outer peripheral surface cooperating with the inner periphera... | 04/11/1989 |
| 4791442 | Camera shutter using an electrostrictive strain element as a driving source A camera shutter using an electrostrictive strain element as a driving source wherein, in order to make it possible to make the driving voltage small and to make an accurate exposure, when the shutter is released, first a reverse voltage is applied to an ... | 12/13/1988 |
