TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compound: The novel imide compound preferably has structural units of formulae (2,3).Z1=same as Z0;X5-X7=same as X1;Z2,Z3=tetravalent organic group having tetracarboxylic acid and its derivative(s);R1,R2=H, (un)substituted aryl, (un)substituted alkyl, (un)substituted cycloalkyl, (un)substituted aralkyl or group of formula: -N=CH-R3;andR3=aryl, alkyl or cycloalkyl, each optionally having substituentWhen X6 is nitrogen atom, X6 couples with R1 to form a ring system, and when X7 is nitrogen atom, X7 couples with R2 to form a ring system. SPECIFIC COMPOUNDS - Seventy-two specific novel imide compounds of formula (1), such as compounds of formulae (4,5) are disclosed.    EXAMPLE - Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride (in g) (8) and dimethyl formamide (50 ml) were added to a reactor, and heat-refluxed. 2-ethylhexyl amine (3.85) was dissolved in dimethyl formamide (30 ml), and obtained solution was added and heat-refluxed for 6 hours. The resulting solution was concentrated under reduced pressure after cooling, and residue was diluted. The insoluble content was filtered and purified to produce naphthalene monoimide component (I) (3.89). Naphthalene-1,4,5,8-tetracarboxylic acid dianhydride (12) and dimethyl formamide (60 ml) were added to a reactor, and heat-refluxed. 2-amino octane (5.78) was dissolved in dimethyl formamide (30 ml), and obtained solution was added and heat-refluxed for 6 hours. The resulting solution was concentrated under reduced pressure after cooling, and residue was diluted. The insoluble content was filtered and purified to produce naphthalene monoimide component (7.98). The obtained component (5) and dimethyl formamide (50 ml) were mixed, and hydrazine monohydrate (0.48) was added. The mixture was reacted at room temperature for 4 hours, filtered, washed and dried to produce naphthalene monoimide monohydrazone derivative (II) (3.56). The obtained component (I) (3), component (II) (2) and dimethyl formamide (50 ml) were reacted at 190 degrees C for 22 hours, cooled and extracted to produce the novel imide compound (1.14). The obtained compound had melting point of 210.9 degrees C. An electrophotographic photoreceptor was produced using the obtained compound. The photoreceptor had excellent sensitivity, electrical property, repeating stability and thin film stability.