(57) Method and apparatus for automatically controlling the inking level of the printed
indicia of a value printing machine particularly suitable for postage meters. An ink
(41) including a phosphorescent component is used to print the indicia and a sensing
unit (54) measures the phosphorescent level of the resulting printed indicia. This
measured phosphorescent level is used to control the transfer of ink (41) from an
ink reservoir (42) to an inking roller (48) which inks the postage indicia die (31).
The mailing machine (10) includes a document feeding bin, an automatic document feeder,
a document transport mechanism and a postage meter (20), which when activated, prints
postage indicia onto the document - (52) using the method and apparatus for controlling
the inking level.
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