Invention Grant
- Patent Title: Direct positive silver halide photosensitive material
- Patent Title (中): 直接正卤化银感光材料
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Application No.: US139865Application Date: 1993-10-22
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Publication No.: US5364750APublication Date: 1994-11-15
- Inventor: Tetsuo Yoshida , Tatsuo Heki
- Applicant: Tetsuo Yoshida , Tatsuo Heki
- Applicant Address: JPX Minami-Ashigara
- Assignee: Fuji Photo Film Co., Ltd.
- Current Assignee: Fuji Photo Film Co., Ltd.
- Current Assignee Address: JPX Minami-Ashigara
- Priority: JPX60-291011 19851224; JPX61-36423 19860220; JPX61-88627 19860417
- Main IPC: G03C1/035
- IPC: G03C1/035 ; G03C1/485 ; G03C1/09
Abstract:
The present invention relates to a direct positive photosensitive material comprising at least two kinds of core/shell-type internal latent image-type silver halide grains having different average grain sizes, the smaller grains being substantially constituted of cubic grains, or tetradecahedron grains mainly of the face (100). According to the present invention, a direct positive photosensitive material having a wide exposure latitude and an extremely improved storage stability can be obtained.
Public/Granted literature
- USD298688S Hearts craft wire Public/Granted day:1988-11-29
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