A Study on the Photographic Characteristics and Crystalline Forms about Photographic Emulsion Prepared from Photographic Gelatine with Polyvinylpyrrolidone

사진용(寫眞用) 제라틴과 Polyvinylpyrrolidone으로 제조(製造)된 사진유제(寫眞乳劑)의 할로겐은(銀) 결정(結晶) 및 사진특성(寫眞特性) 연구(硏究)

The photographic characteristics have been studied in relation with various molecular weights of Polyvinylpyrrolidone(PVP). The shape of silver halogen crystals by physical ripening of mixture of photographic gelatine and various molecular weights of PVP were observed. Then, the photographic characteristics have been studied by chemical ripening. Results were concluded as follows: 1. All of the crystals have formed in the shape of (100) or (111). 2. Photographic characteristics were inferior by using PVP of higher molecular weight. 3. Photographic characteristics were superior by using PVP of lower molecular weight. 4. Photographic characteristic were compared with various Emulsion thickness and Tested Resolving power.