Organic electrophotosensitive materials for migration imaging processes

Claim 1

An electrophoretic migration imaging process which comprises subjecting an electrically photosensitive colorant material positioned between at least two electrodes to an applied electric field and exposing said materials to an image pattern of radiation to which the material is photosensitive, thereby obtaining image formation on at least one of said electrodes, wherein at least a portion of said material is an electrically photosensitive material having the structure ##STR83## wherein Z 1 and Z 2 may be the same or different and each represents the non-metallic atoms necessary to complete a nucleus selected from the group consisting of thiazole, benzothiazole, naphthothiazole, thianaphtheno-7',6',4,5-thiazole, oxazole, benzoxazole, naphthoxazole, selenazole, benzoselenazole, naphthoselenazole, thiazoline, 2-quinoline, 4-quinoline, 1-isoquinoline, 3-isoquinoline, benzimidazole, 3,3-dialkyl-3H-indole, 3,3-dialkylbenzindole, 2-pyridine, thiazoloquinoline and 4-pyridine; Y represents N or a methine carbon C--G 1 ; G 1 and G 2 may be the same or different and each is H, alkyl, or aryl or taken together complete a mononuclear or fused polynuclear carbocyclic ring; A 1 and A 2 , which may be the same or different, each represent alkyl, aryl, carboxy, alkoxycarbonyl, benzofuroyl, aryloxycarbonyl, aralkyl, alkylcarbonyl, cyano, nitro or taken together A 1 and A 2 represent a substituted or unsubstituted nucleus selected from the group consisting of indandione, pyrazolinone, rhodanine; 2(3H)-imidazopyridone; thioxazolidinone, oxazolidinedione; thianaphthenone; 2-thioxothiazolidinone; thiazolidinone; 4-thiazolinone, 4-oxazolinone-2-imine; 2,4-imidazolinedione (hydantoin); thioxoimidazolinone; 5-imidazolinone; 2,4-chromandione; naphthopyrandione; 5-anthraceneone; 1,3-dioxan-4,6-dione; indolinone; indolinethione; isoxazolinone; 1,3-isoquinolinedione, isoxazolinedione, oxobenzothiazinedioxide, pyridinone, chromanone, pyrandione, pyrazolo-s-triazoletetrone, cyclohexanedione, thiazolobenzimidazolone, iminopiperidinedione, piperidinetrione, thiazolopyrimidinedione, thiazolidinedione, pyranopyrimidinetrione, pyrimidinedione, pyrimidinetrione, thioxothiazolopyrimidinedione and thioxopyrimidinedione; said A 1 and A 2 substituents being selected from the group consisting of aryl, alkyl, cyano, alkoxycarbonyl, dicyanoalkylene, (benzoxazolinylidene)ethylidene, (3,3-dialkylindolylidene)ethylidene, (benzothiazolinylidene)ethylidine, aralkyl, alkylaryl, alkoxyalkyl, alkoxyaryl, aryloxyalkyl, aryloxyaryl, halo, cyanoalkyl, cyanoaryl, hydroxyalkyl, hydroxyaryl, alkoxycarbonyl, haloalkyl, haloaryl, alkoxycarbonylalkyl, alkoxycarboxylaryl, pyridyl, 2-alkylaminoalkyl, carboxyalkyl, carboxyaryl; R 1 and R 2 , which may be the same or different, represent H, alkyl, aralkyl or aryl; R 3 and R 4 , which may be the same or different, represent hydrogen, alkyl, aryl, cyano, or taken together with the atoms to which they are attached represent a 5 to 6 member carbocyclic ring; m and n, which may be the same or different, represent 0 or 1; p, q and r, which may be the same or different, represent 0, 1 or 2.