公开(公告)号：US6063558A

公开(公告)日：2000-05-16

申请号：US317626

申请日：1999-05-25

申请人： Johan Loccufier ,  Rene De Keyzer ,  Antonius Rutges

发明人： Johan Loccufier ,  Rene De Keyzer ,  Antonius Rutges

IPC分类号： G03C1/015 ,  G03C1/09 ,  G03C1/12

CPC分类号： G03C1/09 ,  G03C1/015 ,  G03C1/12

摘要： A photosensitive element which comprises on a support at least one photosensitive silver halide emulsion layer and at least a non-light sensitive layer, wherein the silver halide emulsion layer comprises a chalcogenic compound satisfying formula (1): ##STR1## wherein: X represents Se or Te, forming a double bond with its neighbouring C-atom,Nu represents a nucleophilic group which brings an electron pair in heterolytic bond formation; Nu has a pK.sub.a -value of at least 2.0 if Nu is an acidic group,L represents a divalent linking group representing each group which can position an electron donating atom in any of the 5th to the 8th position vis-a-vis the carbon atom of the carbon-chalcogen double bond,AQB represents the necessary atoms to form a heterocyclic 5- or 6-membered ring, provided that when A is a Nitrogen-atom, B is an atom selected from the group consisting of NR.sup.1, O, S, Se and Te,R.sup.1 can represent a hydrogen, an alkyl group, an acyl-group, an aryl group, an aralkyl group or a heteroaryl group;and a method wherein said chalcogenic compound is used during the step of chemically sensitizing at least one of the said silver halide emulsions at a pH-value situated between 3 and 10, a pAg-value situated between 6 and 11 and a temperature in the range of from 40.degree. C. up to 95.degree. C.

摘要翻译： 一种感光元件，其在载体上包含至少一个感光卤化银乳剂层和至少一种不敏感层，其中所述卤化银乳剂层包含满足式（1）的硫代化合物：其中：X表示Se或Te， 与其相邻的C原子形成双键，Nu表示亲电基团，其使电子对在杂解键形成中; 如果Nu是酸性基团，则Nu的pKa值至少为2.0，L表示可以相对于碳原子在5至8位任一位置给电子给体原子的每个基团的二价连接基团 的碳 - 硫属元素双键，AQB表示形成杂环的5或6元环的必要原子，条件是当A为氮原子时，B为选自NR 1，O，S ，Se和Te，R 1可以表示氢，烷基，酰基，芳基，芳烷基或杂芳基; 以及一种方法，其中在化学增感至少一种所述卤化银乳剂的步骤中使用所述硫代化合物，其pH值为3至10，pAg值为6至11，温度范围为 为40℃至95℃