Abstract:
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.
Abstract:
Provided are a processing method and a processing apparatus in which a concentration of a solid content of a development fatigue liquid is low and a moisture content of a discharged solid substance is small. The processing method is a method for removing a first solid substance having a smaller specific gravity than the washout liquid and a second solid substance having a larger specific gravity than the washout liquid from a development fatigue liquid including a solid substance generated by removal of a non-exposed portion of a photosensitive resin plate that has been exposed in an image shape by development using the washout liquid. The method includes a first step of centrifugally separating the first solid substance and the second solid substance included in the development fatigue liquid in a rotating container, accumulating the second solid substance on an inner wall of the container, and accumulating the first solid substance on a holding member provided in the container, a second step of discharging the development fatigue liquid from the container in a state in which the first solid substance accumulated on the holding member is held on the holding member, and a third step of rotating the container, thereby removing the first solid substance held on the holding member from the holding member.
Abstract:
A method of recycling waste liquid from a plate-making process, including: performing a plate-making process using a development replenisher liquid that includes at least one selected from the group consisting of anionic surfactants having a naphthalene skeleton and nonionic surfactants having a naphthalene skeleton at a total content of from 1% by mass to 10% by mass, includes no or not more than 2% by mass of organic solvent having a boiling point of from 100° C. to 300° C., and has a pH of from 10 to 13; concentrating, by evaporating, the discharged plate-making process waste liquid, such that the ratio of the volume of the plate-making process waste liquid after concentration to the volume of the plate-making process waste liquid before concentration is within a range of from 1/10 to 1/2, thereby separating water vapor; and using the obtained regenerated water as diluent water and/or rinse water.
Abstract:
A method of concentrating waste liquid from a plate-making process for a photosensitive planographic printing plate precursor, including: subjecting, in a single development processing bath of an automatic developing machine, a photosensitive planographic printing plate precursor, having a radical polymerizable image recording layer on a support, after exposure simultaneously to a development process and a desensitization process using a developer liquid that contains from 1 to 10% by mass of a surfactant having a phenyl or naphthyl group and an ethylene oxide or propylene oxide group, and has a content of an organic solvent having a boiling point of from 100° C. to 300° C. of 2% by mass or less; evaporatively concentrating plate-making process waste liquid produced by the processes using a waste liquid concentrating apparatus so as to have a volume of from 1/2 to 1/10; and producing reclaimed water by condensing water vapor separated in the evaporative concentration.