Abstract: The present invention provides a method for manufacturing a metal material. The method comprises a temperature increasing step of increasing the temperature of a silver material having undergone final plastic working to 700° C. or more and less than a melting point of the silver material in a vacuum or a helium gas atmosphere, a heating step of maintaining the silver material at 700° C. or more and less than the melting point, and a cooling step of cooling the silver material to room temperature in a vacuum or a helium gas atmosphere. For a part of the period of the heating step, the silver material is heated in a mixed atmosphere in which hydrogen gas is mixed with helium gas.

Abstract: The light-quantity control apparatus includes a base member having an opening allowing light to pass therethrough, a first aperture blade movable in a direction orthogonal to a light passing direction, a second aperture blade rotatable in a surface orthogonal to the light passing direction, and a driving lever to be rotated by a driver to drive the first and second aperture blades. The base member has a protruding portion engaging with a groove portion provided in the first aperture blade, the second aperture blade has a driving cam groove portion with which a driving pin provided in the driving lever slidably engages and a rotation center hole portion with which the protruding portion engages. The second aperture blade is rotated about the protruding portion by sliding of the driving pin with respect to the driving cam groove portion with rotation of the driving lever.

Abstract: A network scanning system has a control apparatus connected to a connection device via a network and includes a scanning application for remotely controlling a scanner, where the scanning application receives a command from the connection device and automatically transmits to a display unit of the connection device via the network without a user operation of the scanning application, a selection screen information, the connection device displays a selection menu and transmits, to the scanning application in the control apparatus, a selection item information specifying an item selected by a user of the display unit, and the scanning application automatically transmits, to the connection device without a user operation of the scanning application in the control apparatus, a control signal based on the selection item, and the scanning application in the control apparatus automatically controls the scanner remotely in accordance with the control signal via the network.

Abstract: The storage unit of a peripheral device has a first storage area and a second storage area. The first storage area stores a plurality of control programs corresponding to a plurality of operating systems of different types. The second storage area is a storage area which is recognized by an information processing apparatus as an external storage device and in which at least one control program is replicated from the first storage area. The information processing apparatus reads out the control program from the second storage recognized by it as the external storage device, and executes the program. The information processing apparatus thus controls the peripheral device.

Abstract: 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.