Sheet feeding device and image forming device

Patent metadata

Field	Value
Publication number	US-11325796-B2
Application number	US-201916548017-A
Country	US
Kind code	B2
Filing date	Aug 22, 2019
Priority date	Aug 27, 2018
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A sheet feeding device includes a sheet feeding cassette, which is detachable with respect to a sheet feeding cassette mounting portion provided on an image forming device body. The sheet feeding cassette includes a storage portion that stores a paper sheet, a first regulator provided on a bottom portion of the storage portion that regulates the position of a paper sheet, and a movable placement plate that upwardly pushes a paper sheet stored in the storage portion. The movable placement plate includes a second regulator that regulates the position of a paper sheet having a different size to the size of a paper sheet that can be regulated by the first regulator.

First claim

What is claimed is:

1. A sheet feeding device comprising a sheet feeding cassette, which is detachable with respect to a sheet feeding cassette mounting portion provided on an image forming device body, wherein
the sheet feeding cassette comprises:
a storage portion that stores at least one paper sheet;
a first regulator provided on a bottom portion of the storage portion and regulates a position of a paper sheet; and
a movable placement plate that upwardly pushes a paper sheet stored in the storage portion,
the movable placement plate comprises a second regulator that regulates a position of a paper sheet having a different size to a paper sheet size that is regulated by the first regulator,
the movable placement plate, on which is placed a paper sheet whose position is regulated by the first regulator or the second regulator depending on a size, is configured to switch postures between a sheet feeding posture in which the paper sheet makes contact with a pickup roller and a non-sheet feeding posture in which the paper sheet is separated from the pickup roller, and
the second regulator is configured to be accommodated in the movable placement plate,
wherein a sheet feeding direction is a direction in which a paper sheet stored in the sheet feeding cassette R fed to the image forming device body, and the second regulator comprising:
a side end regulator that regulates a position of a side end portion, the side end portion being an end portion among end portions of a paper sheet stored in the storage portion which is parallel to the sheet feeding direction, and
a rear end regulator that regulates a position of a rear end portion, the rear end portion being an end portion among the end portions of the paper sheet stored in the storage portion which is on a rear side with respect to the sheet feeding direction.

2. The sheet feeding device according to claim 1 , wherein the movable placement plate further comprises an accommodation portion that stores the second regulator.

3. The sheet feeding device according to claim 1 , wherein the side end regulator and the rear end regulator are integrally formed.

4. The sheet feeding device according to claim 1 , wherein the second regulator has a position which is capable of being adjusted to correspond to a paper sheet size.

5. The sheet feeding device according to claim 1 , further comprising:
a paper sheet detector that detects which of the first regulator and the second regulator is being used to regulate the position of a paper sheet; and
a paper sheet size determinator that determines a paper sheet size based on a detection result of the paper sheet detector.

6. An image forming device comprising the sheet feeding device according to claim 1 .

7. A sheet feeding device comprising a sheet feeding cassette, which is detachable with respect to a sheet feeding cassette mounting portion provided on an image forming device body, wherein
the sheet feeding cassette comprises:
a storage portion that stores at least one paper sheet;
a first regulator provided on a bottom portion of the storage portion and regulates a position of a paper sheet; and
a movable placement plate that upwardly pushes a paper sheet stored in the storage portion,
the movable placement plate comprises a second regulator that regulates a position of a paper sheet having a different size to a paper sheet size that is regulated by the first regulator,
the movable placement plate, on which is placed a paper sheet whose position is regulated by the first regulator or the second regulator depending on a size, is configured to switch postures between a sheet feeding posture in which the paper sheet makes contact with a pickup roller and a non-sheet feeding posture in which the paper sheet is separated from the pickup roller, and
the second regulator is configured to switch postures between a standing posture, in which the second regulator stands upright with respect to an upper surface of the movable placement plate, and an accommodation posture, in which the second regulator is accommodated in the movable placement plate,
wherein a sheet feeding direction is a direction in which a paper sheet stored in the sheet feeding cassette R fed to the image forming device body, and the second regulator comprising:
a side end regulator that regulates a position of a side end portion, the side end portion being an end portion among end portions of a paper sheet stored in the storage portion which is parallel to the sheet feeding direction, and
a rear end regulator that regulates a position of a rear end portion, the rear end portion being an end portion among the end portions of the paper sheet stored in the storage portion which is on a rear side with respect to the sheet feeding direction.

Assignees

• Sharp Kk

Inventors

• Noguchi Tadashi
• Aoki Kohji
• Shibayama Tsuyoshi
• Kimura Masaharu
• Furumoto Haruhisa

Classifications

• B65H1/04 Primary

  adapted to support articles substantially horizontally, e.g. for separation from top of pile · CPC title

• B65H1/08

  with means for advancing the articles to present the articles to the separating device {(B65H1/02 takes precedence)} · CPC title

• B65H2405/11425

  retractable · CPC title

• B65H2511/20

  Location in space · CPC title

• B65H1/266

  Support fully or partially removable from the handling machine, e.g. cassette, drawer (B65H1/027 takes precedence) · CPC title