Impact printer with reduced electrocorrosion using Zener diode for static discharge
US5611631A · kind A · utility
3Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1995 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Mar 30, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An impact printer has a print head in which demagnetizing coils are embedded in a filling compound. A resistor or Zener diode is connected in series between the print head and the printer's frame ground, to prevent current flow through the filling compound from causing corrosion of the demagnetizing coils, while permitting discharge of static charge from the print head to ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.