摘要:
In the shutter disclosed, a conductor and a permanent magnet, movable relative to each other, form a driver to drive at least one shutter blade across an optical path for photographic light and the force of the driver is supplemented by an auxiliary spring arrangement that exerts zero force at the start of movement of the shutter blade and gradually increases toward termination of movement of the blade.
摘要:
Disclosed is a focal plane shutter for a camera having a shutter blade group consisting of a plural number of light shading thin plates held with two arms, so designed that the slit forming blade positioned at the end of the arm and a light shading auxiliary blade positioned next to the above are made to move in parallel by way of a parallel linkage and that a plural number of other auxiliary blades are mounted rotatably around the shaft provided on the one arm and engaged with a common shaft provided on the other arm in such a manner that along with the rotation of the latter arm they are rotated with the latter shaft.
摘要:
A hold releasing magnetic device so designed that by controlling the current supply to a magnet the armature is displaced relative to the yoke so as to release a held shutter member wherein the armature and the yoke are supported coaxially with each other on the same shaft on a base plate on which the magnetic device is mounted, with the yoke being securable on the base plate.
摘要:
In a shutter of the electromagnetic release type arranged to have shutter blades locked by locking members in their charged states and to make an exposure by releasing the shutter blades from the locking members, a first locking member is arranged to lock each of the charged shutter blades while a second locking member is arranged to lock the shutter blade when the shutter blade is released from the first locking member and to have the shutter blade released therefrom by the action of an electromagnet. The releasing torque required for the second locking member is smaller than that of the first locking member.
摘要:
An electromagnetically driven shutter, wherein between the electromagnetic driving source and the shutter blade actuating member which receives the driving force from the driving source a play is provided in such a manner that after the electromagnetic driving source has run a certain determined distance the driving force is transmitted to the shutter blade actuating member so as to let the shutter blade start to run.
摘要:
A CPU in a computer includes a control information management table for storing information about whether an error has occurred in a control unit in the computer or in a control unit in a communications card. When an error occurs in any of the control units, the occurrence of the error is recorded in the control information management table, and an error message is transmitted by the monitor to an operator. When a dump collection command is issued by the operator in response to the error message, the monitor specifies the CPU in the computer or the communications card which operates the control unit where the error has occurred, by referring to the control information management table, and collects only the dump information corresponding to the control unit.
摘要:
A camera shutter has a shutter base plate for pivotally supporting blade groups each constituted by a plurality of blades carried by arms and a thick-walled portion formed on the surface of the shutter base plate that carries the blade groups. The thick-walled portion is formed in an area which excludes a pivoting area in which the arms make their pivotal motions and which is adjacent to the pivoting area. The shutter base plate and the thick-walled portion are integrally formed of a synthetic resin.
摘要:
A radiation image storage panel having a stimulable phosphor layer provided on a substrate with a honeycomb structure constituted of a number of cells partitioned by wall members filled with the stimulable phosphor is prepared by forming the substrate for phosphor layer by casting in a mother mold or etching of the substrate and filling the cells on the substrate with the stimulable phosphor. This radiation image storage panel can give images of markedly improved sharpness.
摘要:
The present invention relates to a braking device for a focal plane shutter in a camera. In the early stage of a braking operation on a shutter curtain, a relatively weak braking force is applied, and in the closing stage of the braking operation, a strong braking force is applied to insure that without causing the shutter curtain to bounce or to be damaged by shock, the shutter curtain is stopped. The device is constructed from two brake members arranged so that in the early stage the first brake member takes action, and in the closing stage, the second brake member takes action to add a braking force to that of the first brake member.
摘要:
A shutter device comprises a shutter blade which operates according to an exposure operation, a first blade driving spring for giving an urging force working in a predetermined direction to the shutter blade substantially over an entire operating range of the shutter blade, a second blade driving spring for giving the shutter blade an urging force working in the same direction as the first blade driving spring, and a charging mechanism for charging the first blade driving spring and the second blade driving spring. Since the charging mechanism includes a first charging member which travels to charge the first blade driving spring and a second charging member which travels to charge the second blade driving spring, the timings of charging the respective springs and the torques required to charge the respective springs can be optimally set.