Patent ID: 7394564

Claim:
A printing machine, comprising: a plate cylinder having a printing plate mounted on a periphery thereof; an image recorder recording image data and performing platemaking on the printing plate by using the image data; a plurality of ink keys installed in a row located axially to the plate cylinder; a plurality of key control switches corresponding to the plurality of ink keys for adjusting opening degrees of the respective ink key; a printing unit for printing a pattern of a print on printing paper to produce the print by transferring an ink fed to the printing plate onto the printing paper while transporting the printing paper in a predetermined printing direction, and discharging the produced print; a color density measuring unit for measuring color density of the produced print discharged from the printing unit; an ink key opening degree adjusting unit for controlling ink feeding rates by adjusting the opening degrees of each of the ink keys based on the color density of the produced print; a touch sensitive control panel for adjusting the opening degrees of each of the respective ink keys; and a control unit for displaying images of the plurality of key control switches on the touch sensitive control panel, and superimposing an image of the pattern of the produced print on the images of the plurality of key control switches on the touch sensitive control panel by using the image data, wherein the printing unit produces a print by sequentially transferring inks of a plurality of colors to the printing paper, the plurality of key operation switches are a collection of key control switches individually arranged in each area of a plurality of areas corresponding to the ink keys, and for each of the ink colors, and the control unit displays images of the plurality of key control switches corresponding to the collection of key control switches are arranged two dimensionally, the images of the plurality of key control switches corresponding to the same ink key area are arranged in a first direction, and the images of the plurality of key control switches corresponding to the ink keys feeding the same ink are arranged in a second direction orthogonal to the first direction on the touch sensitive control panel.