Methods and apparatuses for sensing rotational position of a component in a printing device
US7126107B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2003 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Aug 16, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/366
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An encoder and related methods for use in a printing device indexing system are provided. In some embodiments, the system comprises a feedroller or other component configured to index media through a printing device, and an encoder disk is coupled to the feedroller. In these embodiments, the system includes a reflective optical detector having a transmitter and a receiver provided adjacent a first surface of the encoder disk, the reflective optical detector being configured to detect the passage of the home position mark as the encoder disk rotates by the reflection of radiation off of the first surface. Also provided in some embodiments are methods for setting a counter to correspond with the home position of a rotatable element by utilizing threshold signal levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.