| 摘要 |
An electrophotographic printing machine, of the type having a photoconductive surface on which a developed image is formed for producing a plural color image on a sheet substrate, includes mechanisms for forming a developed image on the photoconductive surface by attracting developer material of a plurality of colors to the photoconductive surface. The machine further provides apparatus for adjusting the forming mechanisms so as to change the quantity of at least one of the plurality of colored developer materials attracted to the photoconductive surface so that the quantity of the respective developer materials constituting the image produced on the substrate is varied. Finally, a device for storing and applying electronic signals corresponding to selected adjustments of the adjusting apparatus is provided so that selected colors are repeatable.
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