Medium feeding device

Patent metadata

Field	Value
Publication number	US-2019367307-A1
Application number	US-201916424603-A
Country	US
Kind code	A1
Filing date	May 29, 2019
Priority date	May 31, 2018
Publication date	Dec 5, 2019
Grant date	—

Abstract

A medium feeding device is provided with a feeding section for feeding a medium and sensors for detecting the medium. The feeding section includes a feed roller and a separation roller, the sensors form a sensor line in which the plurality of sensors is aligned in a feeding direction of the medium to be fed, the two sensor lines are arranged in such a manner that the sensors overlap with each other in a width direction of the medium to be fed, and the sensor lines are so configured as to extend, in the feeding direction, from an upstream region upstream of a nip point where the feed roller and the separation roller make contact with each other, a nip region including the nip point, and to a downstream region downstream of the nip point.

First claim

What is claimed is:

1 . A medium feeding device comprising:
a feeding section for feeding a medium; and sensors for detecting the medium, wherein the feeding section includes a feed roller and a separation roller, the sensors form a sensor line in which the plurality of sensors is aligned in a feeding direction of the medium to be fed, the two sensor lines are arranged in such a manner that the sensors overlap with each other in a width direction of the medium to be fed, and the sensor lines are so configured as to extend, in the feeding direction, from an upstream region upstream of a nip point where the feed roller and the separation roller make contact with each other, a nip region including the nip point, and to a downstream region downstream of the nip point.

2 . The medium feeding device according to claim 1 , further comprising:
a set guide for supporting the medium to be set, wherein the sensor lines are so configured as to extend, in the feeding direction, from a set region upstream of the upstream region through the downstream region, and the sensor is configured to detect, in the set region, the medium supported by the set guide.

3 . The medium feeding device according to claim 1 , wherein
the sensor lines are so located as to nip the feeding section between the sensor lines in the width direction.

4 . The medium feeding device according to claim 1 , further comprising:
a multi-feed sensor configured to detect multi-feeding of the media fed by the feeding section, wherein the sensor lines are located upstream of the multi-feed sensor in the feeding direction.

5 . The medium feeding device according to claim 1 , wherein
two or more of the above sensors are provided in each region.

6 . The medium feeding device according to claim 1 , further comprising:
an end sensor configured to detect the medium at a position downstream of the downstream region in the feeding direction, wherein when the end sensor is switched from a state where the end sensor detects the medium to a state where the end sensor does not detect the medium, the medium feeding device comes to be in a first mode in a case in which the sensor in the downstream region does not detect the medium, and comes to be in a second mode in a case in which the sensor in the downstream region detects the medium, and the second mode is a mode in which separating power of the separation roller that causes the medium to be separated is larger than the first mode.

7 . The medium feeding device according to claim 1 , further comprising:
an end sensor configured to detect the medium at a position downstream of the downstream region in the feeding direction, wherein when the end sensor is switched from a state where the end sensor detects the medium to a state where the end sensor does not detect the medium, the medium feeding device comes to be in a first mode in a case in which the sensors in the downstream region do not detect the medium, comes to be in a second mode in a case in which part of the sensors in the downstream region detects the medium, and comes to be in a third mode in a case in which all of the sensors in the downstream region detect the medium, the second mode is a mode in which separating power of the separation roller that causes the medium to be separated is larger than the first mode, and the third mode is a mode in which the separating power of the separation roller that causes the medium to be separated is larger than the second mode.

Assignees

• Seiko Epson Corp

Inventors

• Kanamitsu Masatomo

Classifications

• B65H9/04

  Fixed or adjustable stops or gauges (gauge pins B65H9/02) · CPC title

• B65H7/14

  by photoelectric feelers or detectors · CPC title

• B65H5/062

  between rollers or balls · CPC title

• B65H2801/03

  Image reproduction devices · CPC title

• B65H2408/10

  for handling sheet(s) · CPC title