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An ink jet plate maker and proofer apparatus (66) and method adapted for printing a proof of a work to be printed, and making a printing plate (16) for printing the work, including a first element (68) including circuitry (70) controllably operable for generating ink drops of a first predetermined v

An ink jet plate maker and proofer apparatus (66) and method adapted for printing a proof of a work to be printed, and making a printing plate (16) for printing the work, including a first element (68) including circuitry (70) controllably operable for generating ink drops of a first predetermined volume for printing the proof on a proofing receiver, and a second element (86) including circuitry (88) controllably operable for generating liquid drops of a second predetermined volume for image wise making or completing the printing plate (16), the second predetermined volume being different from the first predetermined volume. According to an exemplary embodiment, the apparatus includes a first print head (82) connected in fluid communication with a source of ink (106) for printing the proof of the work, and a second print head (92) in fluid communication with a source of a liquid (108) for making the printing plate, the print heads (82, 92) being disposed for ejecting drops of the ink and the liquid for making the printing plate onto a proofing receiver and a treated plate, respectively, positionable on a platen (96) relatively moveable with respect to the print heads (82, 92). The first element (68) is connected in electrical communication with the first print head (82) and includes a first clock (72) connected to a signal generator (76) operable for producing a drive signal for generating the ink drops of the first predetermined volume for printing the proof on the proofing receiver. The second element (86) includes a second clock (90) connected to the signal generator (76) and operable in conjunction therewith for driving the second print head (92) for generating the liquid drops for making the printing plate (16).

대표청구항 ▼

1. An ink jet printer for printing a proof of a work to be printed and making a printing plate for printing the work comprising;a first element including circuitry controllably operable for generating ink drops of a first predetermined volume for printing the proof on a proofing receiver, the proof

1. An ink jet printer for printing a proof of a work to be printed and making a printing plate for printing the work comprising;a first element including circuitry controllably operable for generating ink drops of a first predetermined volume for printing the proof on a proofing receiver, the proof having micro-structures of dots that for halftone dots; and a second element including circuitry controllably operable for generating liquid drops of a second predetermined volume for making the printing plate, the second predetermined volume being different from the first predetermined volume, wherein micro-structure of dots that form halftone dots on the plate are matched to that on the proof so that a print from the plate can be printed that has halftone dot micro-structures that are substantially identical to that of the proof.