Dual purpose display for printing presses

Display apparatus for a printing press having a plurality of ink rate control devices distributed laterally across the press and having equipment for producing indicating signals having values in accordance with the settings of respectively associated said ink control devices and having at least one ink density measurement system for making a measurement of printed ink density as established by at least some of said devices comprising display means including means responsive to said indicating signals for displaying visual representations as to the values of associated said indicating signals in a linear array of visual displays of the settings in the order in which the ink control devices are laterally distributed across the press, said display means including means for displaying said plurality of visual representations as a plurality of vertical columns of equally spaced apart indicators with each said column being associated with one of said ink control devices, said indicators of each column extending from a horizontal base line and extending in a first direction therefrom with the number of said indicators in a given column being dependent on the value of the indicator signals for the ink setting of an associated said ink control device, reference means operable for setting an ink density reference level, comparator means responsive to said ink density measurement and said ink density reference level for producing a density deviation signal in accordance with the difference between them, and said display means including means for displaying a visual representation of said density deviation signal in geometrical alignment with and for visual association with those ones of said array of displays of ink control device settings by which said ink density is established.

Display apparatus for a printing press having a plurality of ink control devices distributed laterally across the press and having means for producing a like plurality of indicating signals having values in accordance with settings of respectively associated said ink control devices and having a plurality of ink density measurement systems each for making a measurement of printed ink density as established by at least some of said devices comprising display means including means responsive to said indicating signals for displaying visual representations as to the values of associated said indicating signals and including means for displaying said plurality of visual representations as a plurality of vertical columns of equally spaced apart indicators with each said column being associated with one of said ink control devices, said indicators of each column extending from a horizontal base line and extending in a first direction therefrom with the number of said indicators in a given column being dependent on the value of the indicator signal for the ink setting of an associated said ink control device so that the last indicator of said column is spaced from said base line by a distance proportional to the setting of the associated ink control device except when the setting thereof corresponds to a vertical position intermediate said equal spacings, means for producing an interpolation indicator as to the last indicator in a said column to indicate said setting when said setting corresponds to a vertical position intermediate said equal spacings, reference means for setting an ink density reference level, comparator means responsive to said ink density measurement and said ink density reference level for producing a density deviation signal in accordance with the difference between them, and said display means including means for displaying a visual representation of said density deviation signal in geometric alignment with and for visual association with those ones of said array of displays of ink control device settings by which said ink density is established.