CalcTime Printer Specifications — Verifone P250 POS Printer

The CalcTime self-totaling time clock utilized the Verifone P250 point-of-sale printer, a compact and widely deployed POS printer known for reliability and durability. With millions of units shipped worldwide, the Verifone P250 became one of the most common receipt printers in retail and transaction-based environments.

This printer generated two- or three-part receipts quickly after transaction entry, reducing total transaction time. Its built-in buffer and shuttle-impact dot matrix mechanism provided consistent performance and a dependable printed audit trail for reconciliation and recordkeeping.

Printing Method and Performance

Method: 7-PIN shuttle-impact dot matrix
Speed: Approximately 2.1 lines per second (application dependent)
Buffer: 3 lines
Print Head Life: 50 million characters (estimated)
Mechanism Life: 1.5 million lines (estimated)
Format: 42 columns
Language: English

The shuttle-impact dot matrix system produced crisp, legible characters suitable for multi-part forms and carbon copies.

Physical Specifications

Height: 4.1 inches (105 mm)
Width: 6.1 inches (155 mm)
Depth: 8.9 inches (225 mm)
Operating Temperature: 0–40°C (32–104°F)

Media and Connectivity

Ribbon: Cartridge type
Paper: 3.0-inch standard roll
Interface: RS232 serial connection
Power: 120VAC, 47–63Hz (±10%)

The CalcTime system, which incorporated this printer, has been discontinued. The patent for the CalcTime self-totaling time clock was held by its owners during production. The original concept was developed by Gary Timely, a time clock repair technician based in Phoenix, Arizona.

While no longer manufactured, the CalcTime and its associated printing system remain part of the broader evolution of self-totaling time clock technology.