Asahi Kogaku Kogyo Kabushiki Kaisha

Asahi Kogaku Kogyo K.k.

Toshimasa Yamanaka

Masato Yamamoto

Masahiro Nakajima

Akio Takahashi

Takenao Shishikura

Takayuki Sensui

Isamu Hirai

Osamu Sato

Toshiyuki Kitazawa

Jun Kitera

Satoshi Nakano

Koji Sato

Akihiro Arai

Yutaka Ohsawa

Susumu Koshino

Katsuyoshi Suzuki

Yoshiyuki Kobayashi

Kiyoshi Negishi

Hiroshi Orita

Katsumi Kawamura

Mikio Horie

Masahiro Koinuma

Nobuhiko Matsudo

Michirou Ohishi

Seiichi Mori

Takeshi Matsushita

Kouji Satou

Masahiro Kionuma

A cassette casing for holding an ink film ribbon has a discharge outlet for the ink film ribbon. A winding core is rotatably mounted in the cassette casing. An ink film ribbon is wound on the winding core and has one end thereof discharged through the discharge outlet. At least one slide contact member is disposed at the discharge outlet and contacts the ink film ribbon along the full width of the ink film ribbon.

Thermal line printer

A thermal line printer with a page-width print head includes a page-width ink film ribbon that feeds in the same direction as paper inserted in the printer. The thermal line printer may print on ordinary untreated paper, and the ink film ribbon may be stored in a cassette.

In representing a depth of field in a camera, the depth of field is displayed on the basis of the magnitude of a field depth feeling Df which corresponds to human feeling. The field depth feeling Df is obtained by processing at least one of a depth of field on calculation, an object distance, a lens hypen-focal length, a diameter of permissible circle of confusion, a lens aperture value and a lens focal length.

Representation of depth of field in camera

A camera having a manually actuable switch for temporarily shifting the camera to an optimum exposure value so that exposure factors, based upon a manually set shutter speed and a manually set aperture value, are replaced by optimum exposure factors based upon a metered brightness of the object to be photographed when the camera is set to a non-program exposure mode. A clear button associated with the camera functions as a manually actuable switch for temporarily shifting an exposure mode of the camera to another exposure mode when the camera is set to a hyper-manual exposure mode. In the hyper-manual exposure mode, a photographer sets exposure factors by actuating a Tv electronic dial and an Av electronic dial. Actuation of the clear button when the camera is set to the hyper-manual exposure mode causes the set exposure factors to be replaced with optimum exposure factors that are automatically calculated in accordance with an object brightness Bv. Thus, operating the clear button (manually actuable switch for temporarily shifting to another exposure mode) results in the mode of the camera being changed from a mode in which exposure factors are manually set by a photographer (via the setting of a shutter speed and an aperture value) to a mode in which optimum exposure factors are set based upon a calculation performed by a processor of the camera.

Exposure control apparatus of camera

In representing a depth of field in a camera, the depth of field is displayed on the basis of the magnitude of a field depth feeling Df which corresponds to human feeling. The field depth feeling Df is obtained by proccesing at least one of a depth of field on calculation, an object distance, a lens hypen-focal length, a diameter of permissible circle of confusion, a lens aperture value and a lens focal length.

An exposure control apparatus of a camera having a photometer for detecting a brightness of an object to be taken, an exposure value calculator for calculating an optimum exposure value in accordance with the object brightness, and an exposure factor setting device for setting a pair of exposure factors having a shutter speed and a diaphragm value, including an exposure factor manual setting device, a specific program exposure mode in which the exposure factors corresponding to the optimum exposure values are automatically set, and an exposure factor modifying device for enabling the exposure factor manual setting device to manually set one of the exposure factors when the exposure factor manual setting device is actuated in the specific program exposure mode.

Printer

An exposure control apparatus of a camera, wherein a pair of exposure factors that include a shutter speed and a diaphragm value can be manually and independently set. Furthermore, in the exposure control apparatus, an exposure value determined in accordance with the exposure factors can be locked, and one of the exposure factors can be varied, based on the locked exposure value, when the other exposure factor is varied by the associated manual setting means.

An exposure control apparatus of a camera, in which at least one of a pair of exposure factors that include a shutter speed and a diaphragm value is variable. An exposure factor setting device sets at least one variable exposure factor, while a limit value setting device varies and sets at least one upper and lower limit value of the exposure factor.

Exposure control apparatus of camera including exposure factor limit

Barcode scanner

An apparatus for indicating photographing conditions within a finder of a camera, including at least one indicator which has a plurality of indicating elements and which represent a single symbol or figure as a whole in the finder field of view, each of the indicating elements indicating an associated photographing condition.

Indicating apparatus within finder of camera

A single-lens reflex camera with a flash unit built into the camera body above the viewing pentaprism. The unit is movable from an operating position to a non-operating position, preferably enclosed in the camera body. The built-in flash unit may be automatically closed by inserting an external flash in a flash shoe. A display panel may be included on the top of the flash unit housing.

Single-lens reflex camera with built-in flash

A pop-up flash unit 20 for an SLR camera includes an integral auxiliary light emitting device 26 for projecting a predetermined pattern along the camera lens axis to provide sufficient auto-focusing contrast. A triangular prism 60 forms a window in a front wall 16a of the flash unit chamber 16 confronting the condenser lens 25 of the auxiliary light emitting device such that the predetermined pattern projected by the downwardly angled emitting device, when the flash unit is retracted, is bent upwardly to still fall along the camera lens axis.

Growing community of inventors

Tokyo, Japan

Toshimasa Yamanaka