Phthalocyanine composition and photoconductive material, electrophotographic photoreceptor cartridge, and image-forming apparatus each employing the composition

1. A phthalocyanine composite comprising both at least one phthalocyanine compound expressed by general formula (1) and at least one phthalocyanine compound expressed by general formula (2), and having a eutectic-crystalline structure:

where, in the general formulae (1) and (2),

M 1 and M 2 represent, independently of and differently from each other, at least one atom or atomic group selected from the group consisting of gallium, indium and titanium, that are capable of binding to a phthalocyanine,

X 1 -X 4 represent, independently of one another, a halogen atom, and

a, b, c, and d represent, independently of each other, an integer between 0 and 4 and satisfy

a+b+c+d≧ 1.

2. A phthalocyanine composite according to claim 1 , wherein said phthalocyanine composite is produced through a mechanical process for making amorphous state.

3. The phthalocyanine composite according to claim 1 , wherein a+b+c+d=1.

4. A phthalocyanine composite comprising both at least one phthalocyanine compound expressed by general formula (3) and at least one phthalocyanine compound expressed by general formula (4), and having a eutectic-crystalline structure:

where, in the general formulae (3) and (4),

M 3 and M 4 each represent an atom selected from the 13th group of the long-form periodic table, M 3 and M 4 being atoms of the same kind,

X 5 -X 8 represent, independently of one another, a halogen atom,

Y 1 represents a monovalent bonding group capable of binding to M 3 ,

Y 2 represents a monovalent bonding group capable of binding to M 4 , at least either Y 1 or Y 2 being a halogen atom, and

e, f, g, and h represent, independently of one another, an integer between 0 and 4 and satisfy

e+f+g+h≧ 1.

5. The phthalocyanine composite according to claim 4 , wherein e+f+g+h=1.

6. A phthalocyanine composite according to claim 4 , wherein said phthalocyanine composite is produced through a mechanical process for making amorphous state.

7. A photoconductive material comprising a phthalocyanine composite according to any one of claim 1 , 2 - 4 or 6 .

8. An electrophotographic photoreceptor comprising an electroconductive substrate and a photosensitive layer formed on said substrate, wherein said photosensitive layer contains a phthalocyanine composite according to any one of claim 1 , 2 - 4 or 6 .

9. An electrophotographic photoreceptor cartridge comprising:

an electrophotographic photoreceptor according to claim 8 ; and

at least one of

a charge unit for charging said electrophotographic photoreceptor,

an exposure unit for exposing the charged electrophotographic photoreceptor to form an electrostatic latent image thereon, and

a development unit for developing the electrostatic latent image formed on the electrophotographic photoreceptor.

10. An image forming apparatus comprising:

an electrophotographic photoreceptor according to claim 8 ;

a charge unit for charging said electrophotographic photoreceptor;

an exposure unit for exposing the charged electrophotographic photoreceptor to form an electrostatic latent image thereon; and

a development unit for developing the electrostatic latent image formed on the electrophotographic photoreceptor.