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US 11,577,925 B2Granted
Medium feeding device, image reading device, and medium feeding method
AssigneeSeiko Epson Corporation
InventorTakayuki Shiota
Life of this patent
Estimating the term…
Abstract
A document feeding device includes a document placement unit at which a document is placed, a feeding roller for feeding the document, and a ranging sensor for measuring a distance to the document located most upward on the document placement unit. A control unit stops feeding the document by the feeding roller based on post-processing distance data obtained by statistically processing time series data of the distance measured by the ranging sensor.
Claims11
A medium feeding device comprising:
- a placement unit at which media are placed;
- a feeding unit configured to feed the media placed at the placement unit;
- a measuring unit configured to measure a distance to the medium located most upward in a placement direction among the media placed at the placement unit;
- and
- a control unit configured to receive a detection signal output from the measuring unit, and control the feeding of the medium by the feeding unit, wherein
- the control unit is configured to perform determination processing on whether to stop feeding the medium by the feeding unit based on post-processing distance data obtained by statistically processing time series data of the distance.
3 more elements
A medium feeding method for a medium feeding device including
- a placement unit at which media are placed;
- a feeding unit configured to feed, one by one, a plurality of the media placed at the placement unit;
- and
- a measuring unit configured to measure a distance to the medium located most upward in a placement direction among the media placed at the placement unit,
- the method comprising:
- obtaining post-processing distance data by statistically processing time series data of the distance;
- and
- determining whether to stop feeding the medium by the feeding unit based on the post-processing distance data.
5 more elements
Dependencies are inferred from the claim text.