Media roll braking system for a thermal label printer
US5562034A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1995 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Jul 26, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H23/063
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A brake apparatus for a printer is provided which rapidly decelerates and stops a rotating roll of print media in between printing operations, and allows the roll to rotate freely during printing operations. The printer includes a print head mechanism that draws a print media to a print region from a roll of the print media. A roller supports the roll of print media and permits the roll to rotate freely upon application of a drawing force from the print head mechanism. A brake drum is axially coupled to the roller. A lever arm is affixed at a first end thereof to a support structure of the printer and is pivotal between a first position and a second position. A second end of the lever arm has a pedal disposed at a portion of a path along which the print media follows toward the print region. The lever arm is pivoted to the first position by tightening of the print media upon application of the drawing force from the print head mechanism, and is pivoted to the second position upon slackening of the print media. A brake pad is coupled to an intermediate portion of the lever arm, and comes into contact with the brake drum only upon pivoting of the lever arm to the second position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.