Sheet feeding device
AssigneeBrother Kogyo Kabushiki Kaisha
InventorNaoyuki Iwata
Life of this patent
Estimating the term…
Abstract
A sheet feeding device including: a sheet feeding roller configured to convey a sheet; a placing portion on which the sheet is configured to be placed; a moving unit configured to move the placing portion toward the sheet feeding roller; a separation pad to which a leading end of the conveyed sheet is configured to abut at a contact position; a separation roller configured to nip the sheet conveyed by the sheet feeding roller between the separation pad and the separation roller at a nip position while bringing the sheet into sliding contact with the separation pad; and a separation assistant member provided between the sheet feeding roller and the separation roller and configured to change a distance between the nip position and the contact position according to a basis weight of the sheet by coming into contact with the sheet.
Claims20
A sheet feeding device comprising:
- a sheet feeding roller configured to come into contact with a sheet and convey the sheet;
- a placing portion configured to swing toward the sheet feeding roller and on which the sheet is configured to be placed;
- a moving unit configured to move the placing portion toward the sheet feeding roller;
- a separation pad to which a leading end of the sheet conveyed by the sheet feeding roller is configured to abut at a contact position;
- a separation roller disposed at a downstream side than the sheet feeding roller in a sheet conveying direction and configured to nip the sheet conveyed by the sheet feeding roller between the separation pad and the separation roller at a nip position while bringing the sheet into sliding contact with the separation pad;
- and
- a separation assistant member provided between the sheet feeding roller and the separation roller and configured to change a distance between the nip position and the contact position according to a basis weight of the sheet conveyed by the sheet feeding roller by coming into contact with the sheet;
- wherein a width of the separation assistant member is larger than a width of a contact region between the separation roller and the separation pad in a width direction of the sheet.
A sheet feeding device comprising:
- a sheet feeding roller configured to come into contact with a sheet and convey the sheet;
- a placing portion configured to swing toward the sheet feeding roller and on which the sheet is configured to be placed;
- a moving unit configured to move the placing portion toward the sheet feeding roller;
- a separation pad to which a leading end of the sheet conveyed by the sheet feeding roller is configured to abut at a contact position;
- a separation roller disposed at a downstream side than the sheet feeding roller in a sheet conveying direction and configured to nip the sheet conveyed by the sheet feeding roller between the separation pad and the separation roller at a nip position while bringing the sheet into sliding contact with the separation pad;
- and
- a separation assistant member provided between the sheet feeding roller and the separation roller and configured to be swung or elastically deformed toward the separation roller by coming into contact with the sheet conveyed by the sheet feeding roller;
- wherein the separation assistant member is respectively provided at both sides of the separation roller in the width direction of the sheet with the separation roller being located between the separation assistant members.
A sheet feeding device comprising:
- a sheet feeding roller configured to come into contact with a sheet and convey the sheet;
- a placing portion configured to swing toward the sheet feeding roller and on which the sheet is configured to be placed;
- a moving unit configured to move the placing portion toward the sheet feeding roller;
- a separation pad to which a leading end of the sheet conveyed by the sheet feeding roller is configured to abut at a contact position;
- a separation roller disposed at a downstream side than the sheet feeding roller in a sheet conveying direction and configured to nip the sheet conveyed by the sheet feeding roller between the separation pad and the separation roller at a nip position while bringing the sheet into sliding contact with the separation pad;
- and
- a separation assistant member provided between the sheet feeding roller and the separation roller and configured to change a distance between the nip position and the contact position according to a basis weight of the sheet conveyed by the sheet feeding roller by coming into contact with the sheet;
- wherein the separation assistant member is respectively provided at both sides of the separation roller in the width direction of the sheet with the separation roller being located between the separation assistant members.
Dependencies are inferred from the claim text.