THE PASSIVATION OF DEVELOPMENT CENTER

doi:10.7517/j.issn.1674-0475.1990.02.141

Imaging Science and Photochemistry ›› 1990, Vol. 8 ›› Issue (2): 141-144.DOI: 10.7517/j.issn.1674-0475.1990.02.141

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THE PASSIVATION OF DEVELOPMENT CENTER

JI SU-XUE, HU PING, REN XIN-MIN

Institute of Pkotofrafhic Chemistry, Academia Stnico, Beijing 100101, P.R. China

Received:1988-10-27 Revised:1989-09-06 Online:1990-05-20 Published:1990-05-20

Abstract

Abstract: A phenomenon which we call "passivation of development center" was described.Different from normal development center,this kind of development center shows low development activity and is not capable to initiate the reduction of grain immediately.The evolution of development center from "passive" to "active" needs a certain interval of time.The longer the duration of this interval the longer the induction period.The causes of the formation of passive development center was discussed and attvibuted to the role of silver-gelatin shell in the early stage of development.

Key words: Passivation, Induction period, Gelatin

JI SU-XUE, HU PING, REN XIN-MIN. THE PASSIVATION OF DEVELOPMENT CENTER[J]. Imaging Science and Photochemistry, 1990, 8(2): 141-144.

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THE PASSIVATION OF DEVELOPMENT CENTER

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