Mechanism for centering rolls of paper stock supplied for printing
US5860753A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1997 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J15/042
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improved mechanism for centering a roll of paper stock for printing in a portable printer is provided, in which the printer has a housing with a cavity and an opening from a side thereof to provide a receptacle for the roll. The centering mechanism includes a spindle disposed in the cavity toward the opening and mounted in the housing for rotation about an axis, and a pair of arms coupled to each other to move in opposite directions with respect to a center between the arms. The arms engage the two opposing ends of the roll when received on the spindle for centering the roll on the spindle. The arms are coupled to each other by a rack and pinion assembly which moves the arms in opposite direction to each other responsive to a force applied by an operator to one of the arms when a roll is received on the spindle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.