VAF instruments 247, Техническое руководство

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2.2 OPERATION OF ACCUMULATIVE PRINTER
The SERIES 788801 Ticket Printer (Accumulative) mechanically records and prints digital information
delivered to its drive shaft. This shaft positions the print wheels according to the ratio of internal and
external gears. Print operations are manually actuated.
The accumulative printer is so-named because it is a non-resetting type that begins the count at the
accumulated total of the last delivery, prints it, accumulates a new total for the new delivery and prints
it. The amount delivered must be calculated by the operator.
2.2.1 Drive
The shaft, figure 4, on the bottom of the printer is driven by a bevel gear from the meter-register or
other equipment. The printer’s bevel gear and shaft assembly turns in a counter-clockwise direction.
The internal bevel gear on the shaft drives the clutch assembly, associated pinions and the gear
assembly of the right-hand wheel.
2.2.2 Printing
In printing operation, a ticket is inserted into the slot of the ticket tray until it bottoms on the internal
stop.
a. As the printing crank is turned, the reset drive gear, figure 5, makes one complete clockwise
revolution until a positive stop is reached. As the ticket tray moves into position, the seal pin
pierces the ticket, holding it in place. This initial printing is made with wheels as they were at the
completion of the last delivery.
b. At the completion of delivery, the crank is turned in a clockwise direction one complete turn until
the stop is again reached. During this cycle the second printing is made recording the accumulative
total of this delivery. At the end of the print cycle, the ticket tray returns to original position and the
seal pin releases the ticket.