Electrophotographic photoreceptor and image forming apparatus

1. An electrophotographic photoreceptor comprising: a conductive support; and at least a charge generation layer and a charge transport layer on the conductive support, wherein said charge generation layer contains α-chloronaphthalene and a hydroxygallium phthalocyanine, said charge transport layer contains a polyester resin having a structural unit represented by the following formula (6) in an amount effective to function as a binder resin, and said charge transport layer is formed using a non-halogen solvent:

wherein

each of Ar 10 and Ar 13 independently represents an arylene group which may have a substituent,

Ar 11 represents a phenylene group,

Ar 12 represents a phenylene group having a methyl group,

X represents a single bond, an oxygen atom, a sulfur atom or an alkylene group,

m represents 0, and

Y represents an alkylene group,

wherein the content of said α-chloronaphthalene is from 0.2 to 1.0 ng/cm 2 and the content of chlorobenzene in the charge transport layer is 0.2 ng/cm 2 or less,

wherein said charge transport layer contains a charge transport substance represented by the following formula (1)-2 and said charge transport layer is formed using only a non-halogen solvent:

wherein said charge transport layer contains a charge transport substance represented by the following formula (2)-1:

2. The electrophotographic photoreceptor of claim 1 , wherein the mixing ratio between the charge transport substance represented by formula (1)-2 and the charge transport substance represented by formula (2)-1 is from 20:80 to 95:5.

3. The electrophotographic photoreceptor of claim 1 , wherein the mixing ratio between the charge transport substance represented by formula (1)-2 and the charge transport substance represented by formula (2)-1 is from 30:70 to 90:10.

4. The electrophotographic photoreceptor of claim 1 , wherein the mixing ratio between the charge transport substance represented by formula (1 1 )-2 and the charge transport substance represented by formula (2)-1 is from 40:60 to 90:10.

5. The electrophotographic photoreceptor of claim 1 , wherein the charge generation layer contains a hydroxygallium phthalocyanine in an amount from 30 parts by mass to 500 parts by mass, per 100 parts by mass of the binder resin.

6. An image forming apparatus, comprising:

the electrophotographic photoreceptor of claim 1 ;

a printing member; and

toner,

wherein the toner developed on the electrophotographic photoreceptor is directly transferred onto the printing member without intervention of an intermediate transfer member.