Abstract: There is provided a method for producing a silver powder having excellent dispersibility and capable of forming a paste which do not form suspended matters by phase separation and which is printed on a substrate to form a film having a uniform thickness. In this method, an alkali or a complexing agent is added to an aqueous silver salt containing solution to form a silver oxide containing slurry or an aqueous silver complex salt containing solution. After or before silver particles are deposited by reduction by adding a reducing agent to the silver oxide containing slurry or aqueous silver complex salt containing solution while stirring it, at least one chelating agent selected from the group consisting of compounds having an azole structure, dicarboxylic acids, hydroxy carboxylic acids and salts thereof is added to a silver power containing slurry solution as a dispersing agent.

Abstract: There is provided a method for producing a silver powder having excellent dispersibility and capable of forming a paste which do not form suspended matters by phase separation and which is printed on a substrate to form a film having a uniform thickness. In this method, an alkali or a complexing agent is added to an aqueous silver salt containing solution to form a silver oxide containing slurry or an aqueous silver complex salt containing solution. After or before silver particles are deposited by reduction by adding a reducing agent to the silver oxide containing slurry or aqueous silver complex salt containing solution while stirring it, at least one chelating agent selected from the group consisting of compounds having an azole structure, dicarboxylic acids, hydroxy carboxylic acids and salts thereof is added to a silver power containing slurry solution as a dispersing agent.

Abstract: In a case that a cleaning mode is designated, it is determined whether or not a lens unit is attached to a camera main body. If it is determined that the lens unit is not attached to the camera main body, a quick return mirror is moved upward and a shutter is opened, and a photoelectric conversion device, or a cover glass or an optical filter of the photoelectric conversion device is vibrated, thereby foreign substances attached to the photoelectric conversion device and the like are removed.

Abstract: There is provided a method for producing a silver powder having excellent dispersibility and capable of forming a paste which do not form suspended matters by phase separation and which is printed on a substrate to form a film having a uniform thickness. In this method, an alkali or a complexing agent is added to an aqueous silver salt containing solution to form a silver oxide containing slurry or an aqueous silver complex salt containing solution. After or before silver particles are deposited by reduction by adding a reducing agent to the silver oxide containing slurry or aqueous silver complex salt containing solution while stirring it, at least one chelating agent selected from the group consisting of compounds having an azole structure, dicarboxylic acids, hydroxy carboxylic acids and salts thereof is added to a silver power containing slurry solution as a dispersing agent.

Abstract: This invention provides an image sensing apparatus and method, which can independently calculate and display the histograms of the entire range and selected range of image data sensed by an image sensing element. In an image sensing apparatus of this invention, a microcomputer (16) calculates the histogram of the entire area of image data sensed by an image sensing element (6), and that of image data of an area selected by an operation member (18) which is used to select a photometry mode, and identifiably displays these calculation results on an EVF (12) via circuits from a video signal processing circuit (10) to an EVF driving circuit.

Abstract: First to sixth annular projections and first to sixth annular recesses, which have shapes corresponding to shapes of first to sixth conventional seal members, are formed respectively at portions at which various types of blocks and first and second intermediate plates are joined, by performing resin molding with molds. Ultrasonic welding is performed while the first to sixth annular projections face the first to sixth annular recesses, respectively.

Abstract: There is provided a method for producing a silver powder having excellent dispersibility and capable of forming a paste which do not form suspended matters by phase separation and which is printed on a substrate to form a film having a uniform thickness. In this method, an alkali or a complexing agent is added to an aqueous silver salt containing solution to form a silver oxide containing slurry or an aqueous silver complex salt containing solution. After or before silver particles are deposited by reduction by adding a reducing agent to the silver oxide containing slurry or aqueous silver complex salt containing solution while stirring it, at least one chelating agent selected from the group consisting of compounds having an azole structure, dicarboxylic acids, hydroxy carboxylic acids and salts thereof is added to a silver power containing slurry solution as a dispersing agent.

Abstract: In an apparatus which captures a photographic image, stores the captured image in an image storage device, reads the image stored in the image storage device, and records the read image on a recording medium, in a method for controlling such an apparatus, and in a computer program product for providing such a control method, an adjustment value of exposure is displayed with a bar-type indication before shooting and the number of images which can be stored in the image storage device is displayed within a predetermined time after shooting, and the display of the number of images which can be stored in the image storage device is changed according to the number of images which can be recorded in the recording medium.

Abstract: First to sixth annular projections and first to sixth annular recesses, which have shapes corresponding to shapes of first to sixth conventional seal members, are formed respectively at portions at which various types of blocks and first and second intermediate plates are joined, by performing resin molding with molds. Ultrasonic welding is performed while the first to sixth annular projections face the first to sixth annular recesses, respectively.

Abstract: This invention provides an image sensing apparatus and method, which can independently calculate and display the histograms of the entire range and selected range of image data sensed by an image sensing element.

Abstract: It is an object of this invention to provide a film image read apparatus which allows a monitor to reproduce a film image in accordance with the intention of the photographer. To achieve this object, there is provided an apparatus including an information read circuit for reading predetermined information, other than image information, which is recorded on a film, an image read circuit for reading an illuminated film image, a metering circuit for metering the illuminated film image, a switching circuit for switching metering areas of the metering means for the film image, and a control circuit for controlling the switching means to switch the metering areas for the film image in accordance with the read information.

Abstract: A film reading apparatus includes a reading unit for reading a bit string magnetically recorded on a loaded film, a bit string information recording unit for recording the bit string read by the reading unit, and a collation unit for collating the bit string read by the reading unit with the bit string recorded in the bit string information recording unit. An identical film determination unit determines that the same film as the previously loaded film is loaded, in a case that the collation result obtained by the collation units indicates that the bit strings coincide with each other. The loaded film can automatically return to the previously loaded state.

Abstract: The invention relates to a visual axis detection apparatus and the like which is constituted by light receiving device for receiving image of an observer's eye, read-out device for reading out the photoelectric conversion signals from the light receiving device, information processing device for extracting a plurality of characteristic information on the basis of the signals read out by the read-out device and outputting information regarding the direction of the observer's visual axis and restricting device for giving a restriction to the read-out area of the light receiving device.

Abstract: A camera includes a first control part arranged to make an exposure by operating a shutter with a film stopped, a second control part arranged to make a slit exposure by moving the film with the shutter opened, and a selection switch provided for selecting either the first control part or the second control part. Additionally, a segment display varies in response to film movement during slit exposure.

Abstract: An image taking apparatus including a photometry device that detects a luminance value for each of a plurality of areas of a photometric field, a selection circuit that selects one of the plurality of areas to be a reference area, a computing circuit that computes a difference value for each of the plurality of areas, each difference value representing a difference between the luminance value for a respective area and the luminance value for the reference area, and a display device that respectively displays the difference values for each of the plurality of areas.

Abstract: A multistage ejector assembly which can be assembled in an extremely facilitated manner, at a low cost, and while avoiding from high precision assembling work for a plural number of nozzles and diffusers. The multistage ejector assmbly includes a casing body (2) of a channel-like shape in cross-section having an axial through hole (5) internally of a thick bottom wall for receiving a nozzle body (12) and a multistage ejector structure (14) therein. The multistage ejector structure (14) includes of an integral molded structure including diffuser-nozzles (15a) and (15b) and a diffuser (15c) of a final stage located in an axially aligned state relative to a spout hole (13) of the nozzle body and interconnected through larger diameter portions (16a) and (16b) with air sucking openings (16a) and (16b), and flanges 18a to (18c) formed around the circumference of the ejector structure.

Abstract: Improved accuracy is contrived in a focus detecting device for finding the amount of correlation between signals corresponding to images received on first and second sensor arrays. A picture element signal of each sensor is duplicated and taken out as a signal of a double information amount, thereby enabling correlation calculation to be effected accurately.

Abstract: A method of and a system for electrically processing vacuum pressure information, which is suitable for use in a vacuum unit. Pressure values are detected and a desired pressure value lower than the highest vacuum pressure value of the detected pressure values is displayed on a displaying device in digital form. The desired pressure value is stored in a storing device. Each of pressure values relative to vacuum, which are detected by a pressure detecting element held in front of a passage communicating with a vacuum port, is converted into a digital signal. The so-converted digital signal is digitally displayed on the displaying device. The desired pressure value stored in the storing device is compared with each of the detected pressure values relative to the vacuum, and information about faulty points is displayed on the displaying device based on the result of comparison.

Abstract: A fluid pressure device having a fluid unit suitable for use as a vacuum generating unit formed by connecting together a plurality of blocks having different functions, the fluid unit being connected to an external device. The fluid pressure device includes a plug-in/one-touch type electric signal connecting unit for collectively mounting a plurality of terminals in a wall surface of the fluid unit, to electrically connect the plurality of blocks to the external device. The terminals are connected to the external device by a single multi-connector means, and a plug-in/one-touch type fluid passage connecting unit, for collectively providing connecting portions within the wall surface of the fluid unit, to interconnect the external device and fluid passages defined in the fluid unit. The fluid passages are connected to the external device by a plurality of cylindrical insertion members which are inserted into the connecting portions.

Abstract: Optical apparatus for controlling operations based on a user's visual axis includes a finder for observing an object, and circuitry for judging whether or not a user is looking into the finder. First control circuitry is provided for discontinuing a predetermined operation of the apparatus when the judging circuitry judges that the user is not looking into the finder. Second control circuitry is provided for beginning the predetermined operation regardless of the result judged by the judging circuitry. Selection circuitry is provided for selecting one of an operation of the first control circuitry and an operation of the second control circuitry according to an operational state of the apparatus. Preferably, the device is incorporated into a camera in which a self-timer or a remote-control photographing mode may be carried out even if the user's visual axis is not detected in the view finder.