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 apparatus includes: a developer carrier that carries a developer; a developer casing that contains the developer to be supplied to the developer carrier; an opening/closing part capable of controlling a moving amount of the developer between a first region on one side in an axial direction of the developer carrier and a second region on the other side in the axial direction of the developer carrier by opening or closing the first region and the second region; and a hardware processor that controls an open/closed state of the opening/closing part in accordance with the state of the developer in the first region and the second region.

A printing drum for a liquid electrophotographic printing system which comprises a photosensitive surface and a heating device mounted to the printing drum. The heating device heats the photosensitive surface of the printing drum to a predetermined temperature.

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 device, includes a developing member that forms a first nip with a latent image forming member on which a latent image is formed, and develops the latent image as a toner image using a developer containing a toner and a first liquid, a first supply member that forms a second nip with the developing member, and supplies the developer to the developing member, and a second supply member that faces the developing member at an upstream of the first nip in the developing member in a rotation direction of the developing member and at a downstream of the second nip, and supplies a second liquid to the developing member.

A developing apparatus includes a body; a buffer plate on the body and including a gas flow path; a vacuum plate on an upper surface of the buffer plate and having a gas supply hole in fluid communication with the gas flow path; and a slit block on an edge of the vacuum plate, the slit block and the vacuum plate forming a flow path for gas from the gas supply hole, wherein a substrate is holdable on the vacuum plate, a contact area between the substrate and the vacuum plate being 90% or more of an area of the substrate, the slit block and the vacuum plate form a buffer space and an inclined first flow path in fluid communication with the buffer space, and the slit block and an edge of the substrate forms a second flow path in fluid communication with the first flow path.