Photography – Self-developing camera
Reexamination Certificate
1999-09-03
2001-04-17
Rutledge, D. (Department: 2851)
Photography
Self-developing camera
C396S429000, C348S267000
Reexamination Certificate
active
06219491
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a camera using a so-called electro-developing recording medium, in which an image obtained by exposing the recording medium is electronically developed.
2. Description of the Related Art
Conventionally, there is known a photographic material which electronically develops an optical image formed thereon through a photographing lens. U.S. Pat. No. 5,424,156 (corresponding to Japanese Unexamined Patent Publication No. 5-2280), for example, discloses a recording medium which is a combination of an electrostatic information recording medium and an electric charge keeping medium. In this specification, such a recording medium is referred to as an electro-developing recording medium, and a camera using the electro-developing recording medium is referred to as an electro-developing type camera.
In the electro-developing recording medium disclosed in the above publication, the electrostatic information recording medium has a photoconducting layer and an inorganic oxide material layer, and the electric charge keeping medium has a liquid crystal display. In this structure, when the electrostatic information recording medium is exposed while an electric voltage is applied to the electrostatic information recording medium and the electric charge keeping medium, electric charge in accordance with the amount of incident light is generated in the electrostatic information recording medium. Since the intensity of the electric field applied to the liquid crystal display facing the electrostatic information recording medium is varied in accordance with the generated electric charge, an image corresponding to the amount of light distribution is indicated or developed on the liquid crystal display.
The image developed on the liquid crystal display can be sensed by using an optical element such as a line sensor. Namely, a front surface of the electro-developing recording medium is illuminated by light, and the light passing through the recording medium is sensed by the line sensor which scans along the rear surface of the recording medium, so that the image can be read out from the line sensor.
If the electro-developing type camera is constructed in such a manner that, in addition to the photographing operation, the image can be read out from the electro-developing recording medium, then a member such as an illumination light source needs to be disposed between the photographing optical system and the electro-developing recording medium. This structure causes difficulty in reducing the axial size of the photographing optical system, so that a design restriction occurs.
SUMMARY OF THE INVENTION
Therefore, an object of the present invention is to provide an electro-developing type camera in which a developing operation and a reading operation can be performed, and the axial size of the photographing optical system can be reduced.
According to the present invention, there is provided an electro-developing type camera comprising an electro-developing recording medium, scanning means, and moving means.
The electro-developing recording medium has a recording area which electronically develops an image formed thereon, and can move along a surface thereof. The scanning means scans the electro-developing recording medium so that the image formed on the electro-developing recording medium is read out. The moving means moves the electro-developing recording medium in such a manner that, when the image is developed, the electro-developing recording medium is positioned at a first position, and when the image developed on the electro-developing recording medium is read out by the scanning means, the electro-developing recording medium is positioned at a second position which is different from the first position.
Further, according to the present invention, there is provided an electro-developing type camera comprising an electro-developing recording medium, scanning means, a color filter and control means.
The electro-developing recording medium electronically develops an image formed thereon. The scanning means scans the electro-developing recording medium so that the image is read out. The color filter has color filter elements and a reading area having spectral characteristics different from the color filter elements. The color filter faces the electro-developing recording medium. The control means controls a position of the color filter. The control means positions the reading area to face the electro-developing recording medium when the scanning means scans the electro-developing recording medium.
Furthermore, according to the present invention, there is provided an electro-developing type camera comprising an electron developing recording medium, scanning means, a color filter, a light source and control means.
The electro-developing recording medium electronically develops an image formed thereon. The scanning means scans the electro-developing recording medium so that the image is read out. The color filter has three primary color filter elements. The color filter faces the electro-developing recording medium. The light source emits light having a predetermined wavelength distribution onto the electro-developing recording medium through the color filter so that the scanning means scans the electro-developing recording medium. The control means controls a position of the color filter. The control means controls the reading area to face a predetermined color filter element included in the primary color filter elements, when the scanning means scans the electro-developing recording medium. The predetermined color filter element has a spectral characteristic such that substantially all light emitted from the light source passes therethrough.
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Abe Tetsuya
Koshikawa Naoki
Mogamiya Makoto
Morisawa Tahei
Sato Koichi
Asahi Kogaku Kogyo Kabushiki Kaisha
Greenblum & Bernstein P.L.C.
Rutledge D.
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