公开(公告)号：US5750326A

公开(公告)日：1998-05-12

申请号：US695385

申请日：1996-08-09

申请人： Michael George Antoniades ,  Xin Wen ,  Mark Jay Herman

发明人： Michael George Antoniades ,  Xin Wen ,  Mark Jay Herman

IPC分类号： G03C1/005 ,  G03C1/015 ,  G03C1/035 ,  G03C1/07

CPC分类号： G03C1/0051

摘要： A process is disclosed of preparing a high bromide tabular grain emulsion comprising (1) in a grain nucleation step creating in a dispersing medium tabular grain nuclei containing parallel twin planes and (2) in a grain growth step subsequently growing the grain nuclei into tabular grains by running into the dispersing medium high bromide silver halide grains having a maximum equivalent circular diameter of less than 40 nm, wherein (a) the high bromide grains are formed prior to the grain nucleation step and then held in the presence of a grain growth restrainer adsorbed to the grain surfaces to inhibit grain ripening and (b) during the growth step the restrainer is desorbed from the high bromide grains and silver and halide ions forming the high bromide grains are released by ripening into the dispersing medium in the growth step.

摘要翻译： 公开了一种制备高溴化物片状颗粒乳剂的方法，其包括（1）在晶粒成核步骤中，在分散介质中产生包含平行双平面的片状晶粒核，和（2）在晶粒生长步骤中随后将晶核生长成片状颗粒 通过进入具有最大当量圆直径小于40nm的分散介质的高溴化物卤化银颗粒，其中（a）在晶粒成核步骤之前形成高溴化物颗粒，然后在晶粒生长抑制剂存在下保持 吸附到谷物表面以抑制谷物成熟，（b）在生长步骤期间，抑制剂从高溴化物颗粒中解吸，形成高溴化物颗粒的银和卤离子在生长步骤中通过熟化分解成分散介质而释放。