Paper reading apparatus, jam detection method, and computer-readable, non-transitory medium
US8840108B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2013 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Aug 8, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/39
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
There are provided a paper conveying apparatus, a jam detection method and a computer-readable, non-transitory medium which can determine whether a jam has occurred based on the sound which is generated by a paper during conveyance at a low cost. The paper conveying apparatus includes an ultrasonic detector, provided near a conveyance path of a paper, for detecting an ultrasonic wave which passes through paper and outputting an ultrasonic signal, a multifeed detector for determining whether multifeed of papers has occurred based on a component of a first frequency band in the ultrasonic signal, and a sound jam detector for determining whether a jam has occurred based on a component of a second frequency band lower than the first frequency band in the ultrasonic signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.