In a developer receiving portion 45, a receiving port 51 for receiving a liquid developer and a discharging port 57 for permitting discharge of the received liquid developer. A film forming electrode 44 is provided opposed to a developing roller 41 with a predetermined gap G and forms a film, on a surface of the developing roller 41, of the liquid developer supplied to the predetermined gap G through the discharging port 57. Further, the developer receiving portion 45 includes a partition plate 47 which partitions an inside space 45a, filled with the liquid developer supplied through the receiving port 51, into a first chamber 61 on the receiving port 51 side and a second chamber 62 on the discharging port 57 side. The partition plate 47 is provided with a plurality of communication ports 50 formed with respect to a liquid developer so as to communicate the first chamber 61 and the second chamber 62 with each other.

An electrophotographic photoreceptor having sufficient solvent resistance and crack resistance in a liquid developer and having excellent electrical characteristics, a process for producing the photoreceptor, and an electrophotographic device are provided at low cost. The electrophotographic photoreceptor includes a conductive base; and a charge generation layer and a charge transport layer sequentially provided on the conductive base. The charge transport layer contains a binder resin that is a copolycarbonate resin having a structure represented by general formula (1) below:

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and a hole transport material that is a compound having a structure represented by general formula (2) below:

##STR00002##

A developing method includes: horizontally holding a substrate; disposing an opposing surface of a developer nozzle that faces a portion of a surface of the substrate, above one of central and peripheral portions of the surface; discharging a developer to form a liquid collection portion of the developer; spreading the liquid collection portion by moving the developer nozzle toward the other of the central and peripheral portions with the opposing surface brought into contact with the liquid collection portion; lifting the developer nozzle relative to the surface while stopping the discharge of the developer, and pulling up a portion of the liquid collection portion; stopping the lifting, and forming a pillar of the developer having a tapered upper end which is brought into contact with the opposing surface; and applying a shearing force to the pillar to shear the tapered upper end and separating the pillar from the opposing surface.

A developing method includes: horizontally holding a substrate; disposing an opposing surface of a developer nozzle that faces a portion of a surface of the substrate, above one of central and peripheral portions of the surface; discharging a developer to form a liquid collection portion of the developer; spreading the liquid collection portion by moving the developer nozzle toward the other of the central and peripheral portions with the opposing surface brought into contact with the liquid collection portion; lifting the developer nozzle relative to the surface while stopping the discharge of the developer, and pulling up a portion of the liquid collection portion; stopping the lifting, and forming a pillar of the developer having a tapered upper end which is brought into contact with the opposing surface; and applying a shearing force to the pillar to shear the tapered upper end and separating the pillar from the opposing surface.

A developing section for a digital printing press includes a controller to control a development unit such that a configuration of the development unit is to be in a first state or a second state based on a determination by the controller comparing a location of a portion of the surface of a photo imaging member presented to the development unit with a location of a transition between an image portion and a portion of the surface of the photo imaging member not in the image portion.

A developing section for a digital printing press includes a controller to control a development unit such that a configuration of the development unit is to be in a first state or a second state based on a determination by the controller comparing a location of a portion of the surface of a photo imaging member presented to the development unit with a location of a transition between an image portion and a portion of the surface of the photo imaging member not in the image portion.