Image forming apparatus apparatus unit facsimile apparatus and developer comprising hydrophobic silica fine powder for developing electrostatic images

An apparatus unit, comprising:

• a member to be charged for carrying an electrostatic image,
• a contact-charging means for charging the member to be charged in contact with the member to be charged, and
• a developing means for developing the electrostatic image carried on the member to be charged, wherein the developing means includes a developer for developing the electrostatic image comprising a toner and hydrophobic inorganic fine powder;
• wherein at least one of said contact-charging means and developing means is supported integrally together with said member to be charged to form a single unit, which can be connected to or released from an apparatus body as desired;
• and
• wherein said toner comprises a binder resin composition which contains 10-70 wt. % of a THF (tetrahydrofuran)-insoluble content and the remainder of a THF-soluble content including a component with a molecular weight of 10,000 or below on a GPC (gel permeation chromatography) chromatogram of the THF-soluble content constituting 10-50 wt. % of the binder resin.

An facsimile apparatus, comprising:

• an electrophotographic apparatus and a receiving means for receiving image data from a remote terminal, wherein said electrophotographic apparatus comprises:
• a member to be charged for carrying an electrostatic image,
• a contact-charging means for charging the member to be charged in contact with the member to be charged, and
• a developing means for developing the electrostatic image carried on the member to be charged, wherein the developing means includes a developer for developing the electrostatic image comprising a toner and hydrophobic inorganic fine powder, wherein said toner comprises a binder resin composition which contains 10-70 wt. % of a THF (tetrahydrofuran)-insoluble content and the remainder of a THF-soluble content including a component with a molecular weight of 10,000 or below on a GPC (gel permeation chromatography) chromatogram of the THF-soluble content constituting 10-50 wt. % of the binder resin.