Device for determining paper size based on time data
US5291225A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1991 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | Jun 5, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00734
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A paper size determination device comprises a paper sensor for detecting paper passing a preset position on a feeding path and generating a detection signal, and a processing circuit for measuring the generation period of the detection signal supplied from the paper sensor and determining the paper size according to the generation period measured. The processing circuit of the determination device includes a step counter for measuring and holding time data on the generation period of the detection signal, in response to the detection signal generated from the paper sensor, a mode counter circuit for detecting that the step counter has completed the measurement and generating a measurement completed mode, and a data processor for detecting that the measurement completed mode has been set and determining the paper size according to the time data held by said step counter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.