Silver halide photographic emulsions used for electron beam recording which comprises at least one compound represented by formula (I) or (II), or salts thereof: ##SPC1## Wherein X represents an oxygen atom, a sulfur atom or N-H, X' represents a sulfur atom, R.sub.1 and R.sub.2 represent each a hydrogen atom, an alkyl group, a substituted alkyl group, an aryl group, a substituted aryl group or a 5 or 6-membered heterocyclic group having at least one nitrogen atom, or a condensed cyclic group thereof, R.sub.3 represents a hydrogen atom or a lower alkyl group, R.sub.4 represents a hydrogen atom, an alkyl group, an aryl group or a vinylmethyl group, and n represents 0 or 1.
REFERENCE TO OTHER APPLICATIONS
This application is a Continuation-In-Part application of United States application Ser. No. 214,460, now abandoned, filed Dec. 30, 1971 of Junichi Matsuyama et al. entitled "Silver Halide Photographic Emulsion Used for Electron Beam Recording".
