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    • 6. 发明专利
    • FILM UNIT WITH LENS AND ITS PRODUCTION
    • JP2000187309A
    • 2000-07-04
    • JP37614098
    • 1998-12-21
    • KONISHIROKU PHOTO IND
    • KOBAYASHI HIROYUKIMASUDA TAKUROTAKABA TETSUSHI
    • G03C3/00G03B17/04
    • PROBLEM TO BE SOLVED: To surely and accurately record data information corresponding to a photographing data on film by making an information transfer means transfer the data information made to correspond to each photograph frame from a storage means to a magnetic writing means at the time of rewinding. SOLUTION: An aperture for insertion in which the magnetic head 20 of the magnetic writing means can be inserted in a contact state is formed on the back cover of a camera. At the time of rewinding, the head 20 is inserted from the aperture for insertion so as to write the data information made to correspond to each photographic frame in a stable state on the magnetic layer of the film rewound at a fixed speed. In such a case, the writing operation by the head 20 is executed by transmitting the stored information in a memory 42 transmitted from a transfer part 43 to a receiving part 47 to the head 20 under the control of a control part 48. Thus, the corresponding data information is accurately recorded on the magnetic layer corresponding to each photograph frame of the film in the stable state when the film is rewound by a rewinding device 30.
    • 8. 发明专利
    • NEGATIVE FILM AND FILM UNIT WITH LENS
    • JP2000010160A
    • 2000-01-14
    • JP17133998
    • 1998-06-18
    • KONISHIROKU PHOTO IND
    • NAKANISHI HIROMITAKABA TETSUSHI
    • G03B15/08G03B17/04G03B17/24G03B17/28G03C3/00
    • PROBLEM TO BE SOLVED: To prevent such an unsightly boundary line as that is too thick or whose line width differs between right and left or which is tilted from being formed between a photographic image plane and a latent image part by providing a boundary part where negative density is gradually changed. SOLUTION: The latent image part Fa of film F is divided into two, that means, it is formed of an image part Fa1 which is positioned on the side of perforation Fp where the character of a cartoon or the like is exposed as a latent image and a boundary part Fa2 which is positioned on the side of the photographic image plane Fb where density change (gradation) exists. Namely, it is formed such that the negative density of the boundary part Fa2 may be gradually higher from the side of the image part Fa1 to the photographic image plane Fb. Therefore, the negative density is considerably higher at a double exposure part Fc and an object image on the photographic image plane Fb at the double exposure part Fc rather disappears as a print. As a result, the line width of the double exposure part Fc gets unclear, whereby the boundary part is not unsightly even if the line width of the double exposure part Fc is too thick or the line width differs between right and left.