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Electronic postage meter having an accounting system independent of power failure
| Details |
Inventors: McFiggans, Robert B.; Eckert, Jr., Alton B.;
Assignee: Pitney Bowes Inc. (Stamford, CT)
Primary Examiner: Thesz; Joseph M.
Assistant Examiner:
Attorney, Agent or Firm: Pitchenik; David E., Soltow, Jr.; William D., Scribner; Albert W.
A postage meter has a printing mechanism positioned on a drum, and a driving gear for rotating the drum to imprint postage on a mailpiece. The driving gear is adapted to be externally driven. The meter also has a shutter bar engageable with the driving gear, and an interposer coupled to the shutter bar for inhibiting movement of the shutter bar. An electronic accounting system is also provided within the meter. A latch, which may be the interposer, is operative in response to the operating voltage for inhibiting more than a determined number of printing cycles. A counting device is incorporated to count printing cycles that were not registered, to thereby enable the electronic accounting system to bring the printing data up to date in the event, for example, of restoration of power following a power failure. |
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DETAILED DESCRIPTION OF THE INVENTION A simplified illustration of a mechanism in accordance with the invention is illustrated in FIG.
1, wherein a drive unit, below the dash-dot line, is of the type disclosed in U.
S.
Pat.
No.
2,934,009, Bach, et al.
This unit has a shutter lever 20 for operating the shutter bar 21 of the postage meter above the dash-dot line, and a base driving gear 22, controlled by a driving mechanism 23.
Initiation of a printing cycle is effected by the tripping of a trip finger 24, mechanically coupled to the drive mechanism, to initially tend to move the shutter lever from its home position as illustrated, to the left of the illustrated position.
While the details of the operation and system of the drive unit are not material to the present invention, it will be noted that if, for any reasons, the shutter bar 21 cannot be operated by the shutter bar drive lever 20, upon the initiation of a driving cycle, then the shutter bar lever drive in the drive unit cannot operate a clutch in the drive unit, and as a result the power input of the drive unit is not applied to the drive input of the postage meter by way of the driving gear 22.
This, and the possibility of jamming of the drive unit if the shutter bar cannot move forward, constitute the only control that the postage member has over the operation of the drive unit.
As in a conventional postage meter (e.
g.
Model 5300 manufactured by Pitney Bowes, Inc.
of Stamford Connecticut), the postage meter in accordance with the invention has a driven gear 25 of the same size, and adapted to mesh with the driving gear 22.
The driven gear 25 rotates the print drum 26, through a single rotation, to effect the printing of postage.
A shaft 27 interconnects the gear 25 and drum 26.
The postage meter further has a shutter bar with a notch 28 or the like for receiving the end of the shutter lever 20.
The shutter bar 21 is further provided with a notch 29 for receiving the pawl or bail 30 of the interposer, for inhibiting movement of the shutter bar from its closed position (as shown), while permitting movement of the shutter bar to its closed position
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