An ink composition for use in digital offset printing including at least one component selected from the group consisting of a curable monomer and a curable oligomer; an optional dispersant; an optional photoinitiator; and at least one non-radiation curable additive, wherein the non-radiation curable additive is a detergent or an emulsifying agent, or wherein the non-radiation curable additive functions as a detergent or emulsifying agent when in the presence of a cleaning fluid, and wherein the non-radiation curable additive is a solid at a temperature of from about 20° C. to about 40° C.

An ink composition for use in digital offset printing including at least one component selected from the group consisting of a curable monomer and a curable oligomer; an optional dispersant; an optional photoinitiator; and at least one non-radiation curable additive, wherein the non-radiation curable additive is a detergent or an emulsifying agent, or wherein the non-radiation curable additive functions as a detergent or emulsifying agent when in the presence of a cleaning fluid, and wherein the non-radiation curable additive is a solid at a temperature of from about 20° C. to about 40° C.

There are provided a washout processor and a washing method that prevent solid contents from being attached to a developed flexographic printing plate precursor again. A washout processor that develops an imagewise exposed flexographic printing plate precursor using a washing solution includes a developing tank that is filled with the washing solution, a development unit that performs the development by removing a non-exposed portion of the flexographic printing plate precursor using the washing solution in the developing tank, and a flow creation unit that flows the washing solution in at least one region of a first region where the flexographic printing plate precursor is carried into the washing solution of the developing tank or a second region where the flexographic printing plate precursor is carried out from the washing solution of the developing tank, in an intersecting direction to cross a width of the flexographic printing plate precursor with respect to a traveling direction of the flexographic printing plate precursor.

There are provided a washout processor and a washing method that prevent solid contents from being attached to a developed flexographic printing plate precursor again. A washout processor that develops an imagewise exposed flexographic printing plate precursor using a washing solution includes a developing tank that is filled with the washing solution, a development unit that performs the development by removing a non-exposed portion of the flexographic printing plate precursor using the washing solution in the developing tank, and a flow creation unit that flows the washing solution in at least one region of a first region where the flexographic printing plate precursor is carried into the washing solution of the developing tank or a second region where the flexographic printing plate precursor is carried out from the washing solution of the developing tank, in an intersecting direction to cross a width of the flexographic printing plate precursor with respect to a traveling direction of the flexographic printing plate precursor.

An ink composition for use in digital offset printing including at least one component selected from the group consisting of a curable monomer and a curable oligomer; an optional dispersant; an optional photoinitiator; and at least one non-radiation curable additive, wherein the non-radiation curable additive is a detergent or an emulsifying agent, or wherein the non-radiation curable additive functions as a detergent or emulsifying agent when in the presence of a cleaning fluid, and wherein the non-radiation curable additive is a solid at a temperature of from about 20 C. to about 40 C.

An ink composition for use in digital offset printing including at least one component selected from the group consisting of a curable monomer and a curable oligomer; an optional dispersant; an optional photoinitiator; and at least one non-radiation curable additive, wherein the non-radiation curable additive is a detergent or an emulsifying agent, or wherein the non-radiation curable additive functions as a detergent or emulsifying agent when in the presence of a cleaning fluid, and wherein the non-radiation curable additive is a solid at a temperature of from about 20 C. to about 40 C.

Provided are a seamless cylindrical offset printing plate which enables seamless continuous printing to be performed, a manufacturing method therefor, and a reproduction processing method. The seamless cylindrical offset printing plate comprises: a cylindrical plate base material; a hydrophilic satin-like rough surface which is formed on a surface of the cylindrical plate base material; and a hydrophobic resist pattern part which is formed on the satin-like rough surface, wherein an exposed part of the satin-like rough surface serves as a non-printing area and the resist pattern part serves as a printing area.

There is provided a system or apparatus for washing out flexographic printing plates. The system is presented in two distinct embodiments or aspects. In one embodiment the system is provided with a large number of rotating brushes which are at least partly immersed in a liquid bath. The second embodiment is based on a flat brush with an eccentric suspension

A system and a method for cleaning a printing cylinder or other printing equipment such as printing plates, ink pans or floors of printing units, the method comprising applying a detergent to the surface to be cleaned, after a period to allow action of the detergent, removing the detergent by rinsing, using a vapor and high velocity air stream, i.e. atomized water fog; or steam; or a combination of steam and air, which allows dislodging particles encrusted within cells of the surface of the piece of equipment to be cleaned.

A system and a method for cleaning a printing cylinder or other printing equipment such as printing plates, ink pans or floors of printing units, the method comprising applying a detergent to the surface to be cleaned, after a period to allow action of the detergent, removing the detergent by rinsing, using a vapor and high velocity air stream, i.e. atomized water fog; or steam; or a combination of steam and air, which allows dislodging particles encrusted within cells of the surface of the piece of equipment to be cleaned.