Abstract: Detection rapidly and with high detection intensity is accomplished while blackening is inhibited during silver enhancement to detect an analyte in a specimen.

Abstract: A camera and a printing apparatus are provided, which are able to produce a high-quality photographic print with the optimum density for a human subject within a short period of time. When a human subject taking switch 14 is turned on to receive an instruction for the camera user to take a human subject photograph, that is, when an instruction for a camera user to take a human subject photograph is inputted, a magnetic recording circuit 28 controls the magnetic head so as to write, in synchronism with winding of the film, information indicative of human subject photography, i.e. the subject is one or more persons (human subject information) and other information (photographic information, date and time information, and the like) in a magnetic information-recording section 21 on the film.

Abstract: A wood molding process which comprises treating woods with liquid ammonia, removing said liquid ammonia by evaporation, softening woods with heating and molding them into a desired shape, and treating the molded woods with hot water or steam.

Abstract: Creases are formed in a cellulosic fiber textile by treating the fiber textile with liquid ammonia, creasing the fiber textile, and treating the fiber textile with hot water or alkaline solution substantially simultaneous with or subsequent to the creasing step. Fully durable creases are formed in the cellulosic fiber textile without detracting from strength.

Abstract: In a focus detecting device has a plurality of optical systems each forming a pair of light distributions whose relative position varies in conformity with the focus adjusted state of an objective lens. The optical systems are disposed so that the direction in which the relative position of the light distributions is varied differs. Focus detecting sensors are provided for receiving the relative position of the light distributions, an the optical systems are constructed so that the optical spacing between the centers of gravity of the areas in which light beams passed through one of the optical systems differs from the optical spacing between the centers of gravity of the areas on another of the optical systems.

Abstract: A power focus device in a camera has a manually rotatively operated focus ring, a lens driving drive source for driving a focusing lens, and a pulse generating device operatively associated with the rotation of the focus ring to generate a pulse signal conforming to the amount of rotation of the focus ring. A focus ring rotation direction detecting device detects the direction of rotation of the focus ring from the pulse signal, a focus ring rotation amount detecting device detects the amount of rotation of the focus ring from the pulse signal, and a drive direction setting device sets the direction of drive of the lens driving drive source on the basis of the result of the detection in the focus ring rotation direction detecting device. A drive amount setting device memorizes the result of the detection in the focus ring rotation amount detecting device and sets the memorized value as the amount of drive of the lens driving drive source.

Abstract: In a camera provided with a focus detecting apparatus in which the object light passed through a photo-taking lens is limited in its passage area by a field mask, the secondary image of an object to be photographed is obtained by a secondary imaging optical system and the secondary image is received by a line sensor and the imaging condition of the photo-taking lens is detected on the basis of the photoelectrically converted output of the line sensor, the opening area of the field mask is set so that the secondary image of the object to be photographed is directed to the both sides of the line sensor, and spot photometering sensors are disposed on the both sides of the line sensor and in the area to which the secondary image is applied, so that the photometering center of gravity is positioned substantially on the line sensor.

Abstract: A flexible circuit board including a substrate having at least electrically conducting patterns and electrically insulating cover layers formed on both sides thereof. A number of apertures are formed along a line in a zone at which the board is to be curved. In this zone, areas between two successive apertures having conducting patterns on the front surface do not have conducting patterns on the back surface, and further, the cover layer is applied only to the surface of the areas on which conducting patterns are formed, while the opposite surface having no patterns formed thereon is absent the cover layer.

Abstract: The present invention relates to a camera having circuit elements arranged by using flexible printed circuit boards. In particular, three or more flexible printed circuit boards on respective different faces of a framework of the camera are provided each with an extension bent to common face contiguous to but oriented at right angles with the board bearing faces. The bent extensions are superimposed one upon another when the electrical connection of all the printed circuit boards is established in one step of assembling operation.

Abstract: This invention relates to a film frame number display device in which, when the remaining number of film frames is above a prescribed value, the number of frames is displayed in semi-analog form by using a bargraph display, and, when the remaining number of film frames falls below the prescribed value, the number of frames is displayed in numerical form by using a digit display circuit.

Abstract: There is disclosed a device for correcting the accumulation time of a photoelectric converter composed of self-scanning charge-accumulation elements of plural bits on the basis of the average intensity to the incident light to the converter. The charge accumulation time is controlled by determining a reference value according to the maximum value of the output signals obtained from the photoelectric converter and comparing this reference value with the average intensity.

Abstract: A display device for a camera in which a first display, showing a film feeding state, is presented by time-serially driving a plurality of patterns arranged in a row, and a second display, showing photographic information, is presented by selectively driving a particular one of the patterns. Circuitry is provided for inhibiting the second display during a period in which film feeding is in progress, thereby enabling the use of the same patterns for the two displays.

Abstract: An information setting device in which for a desired photographic information is set as is increased or decreased from the preset value depending on what phase combination the signals of different phase produced in response to manual operation of a photographic information setting member have, the preset value is made to change when the information setting members is turned more than a predetermined angular distance to a click-stopped position.

Abstract: In the disclosed focus detecting camera, a display is arranged to indicate the drive direction of the camera's photo-taking lens. The camera's focus detecting circuit can detect the in-focus, near-focus, and far-focus positions of the taking lens except when the taking lens is in a drawn out position. The display device shows the drive direction of the lens wherein the display is unable to detect the position.

Abstract: At least one electro-optical light shielding member is disposed close to a reticle of a photographic camera arranged for forming an image of an object to be photographed. The light shielding member is electrically controlled to have the reticle partly light-shielded by the light shielding pattern of the light shielding member in such a manner as to permit selection between an averaging light measuring mode and a spot light measuring mode.

Abstract: A light measuring device for a camera which can change between light measuring ranges is achieved by dividing a transparent light condensing member into two or more portions of different optical characteristics and electrooptically actuating one or more light shading members for shading the object light passing through the light condensing member to a sensor.