Receipt cutting mechanism for dot matrix printer
AssigneeNCR Corporation
InventorsKatsuyoshi Yokota, Ryuji Yamazaki
Life of this patent
Estimating the term…
Abstract
A receipt cutting mechanism includes a round knife or blade which is positively and rotatably driven and which engages with a fixed knife edge as the round knife travels across the printer on a driven carriage. The positive drive includes a gear cluster arrangement operated by a toothed belt which is stretched across the printer. The round knife is maintained in engagement with the fixed knife edge by means of a torsion spring tending to rotate the knife and its support in one direction.
Claims18
A receipt cutting mechanism for a dot matrix printer having side frame portions, said mechanism comprising a
- carriage driven in reciprocating manner across said printer,
- motor means for driving said carriage across said printer, a
- fixed blade member positioned between and supported by said side frame portions, a
- rotatable cutting blade operably associated with said fixed blade for cutting a record medium to provide a receipt of a printing transaction,
- belt means having two ends, with one end fixedly connected to each of said side frame portions and gear means driven by said belt means responsive to movement of said carriage for rotating said cutting blade in response to movement of said carriage across said printer,
- support means coupled to said carriage for supporting said cutting blade in position for cutting said receipt as said carriage is driven across the printer, and
- spring means coupled with said support means and with said carriage for biasing said cutting blade against said fixed blade member for ensuring cutting of said record medium.
In a dot matrix printer having spaced side frames and a cutting mechanism for cutting receipt paper to enable issuing a receipt after a receipt printing transaction, the improvement comprising a
- carriage driven in reciprocating manner across said printer, motor means for driving said carriage across said printer, a fixed member supported by said spaced side frames, a rotatable cutting member carried by said carriage and operably associated with said fixed member for cutting a receipt from said receipt paper upon driving said carriage across said printer, and belt means having two ends, with one end fixedly connected to each of said spaced side frames and gear means driven by said belt means responsive to movement of said carriage for rotating said cutting member in response to driving of said carriage across said printer.
Dependencies are inferred from the claim text.