# US 5,083,767 A · Sheet supplying device

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- Number: US 5,083,767 A
- Document ID: US5083767A
- Status: Granted
- Kind: A
- Application number: 07/523,800
- Filed: 1990-05-15
- Granted: 1992-01-28
- Earliest claimed: 1989-05-15
- Assignees: Sharp Kabushiki Kaisha
- Inventors: Ken-ichi Iwamoto; Yuuji Sugimoto; Kenji Okada; Tadasu Taniguchi; Yoshikado Yamada; Toyoaki Namba
- Web page: https://patentgrep.com/patent/US5083767A

## CPC

- B65H 1/266: {Support fully or partially removable from the handling machine, e.g. cassette, drawer (B65H1/027 takes precedence)}
- B65H 1/04: adapted to support articles substantially horizontally, e.g. for separation from top of pile
- G03G 15/65: {Apparatus which relate to the handling of copy material (handling sheets or webs in general B65H; for photographic purposes in general G03B)}
- G03G 15/6502: {Supplying of sheet copy material; Cassettes therefor}
- B65H 2405/11172: around an axis perpendicular to both transport direction and surface of sheets
- G03G 2215/00383: Cassette
- G03G 2215/00388: rotatable
- G03G 2215/00396: Pick-up device
- G03G 2215/004: Separation device
- G03G 2215/0054: Detachable element of feed path
- B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

A sheet supplying device has at least one sheet stacking portion for stacking a plurality of sheets to be fed, a unit for drawing the sheets out of the sheet stacking portion to feed the drawn sheet to a predetermined path, and a unit for returning a sheet into the sheet stacking portion. This sheet is drawn by the drawing unit but stayed in a position that the leading edge thereof is out of the sheet stacking portion.

## Claims

### Claim 1

A sheet supplying device comprising:
at least one sheet cassette for stacking a plurality of sheets to be fed;
means for rotating said sheet cassette between a longitudinal sheet supply position and a lateral sheet supply position;
means for drawing the sheets out of said sheet cassette to feed the drawn sheet to a predetermined path;
means for returning a sheet into said sheet cassette, said sheet being drawn by said drawing means but stayed in a position that the leading edge thereof is out of said sheet cassette; and
means for actuating said return means before rotating said sheet cassette.

### Claim 2 (depends on 1)

A device as claimed in claim 1, wherein said device further comprises control means for actuating said return means at each time a predetermined sheet supply operation is completed.

### Claim 3 (depends on 1)

A device as claimed in claim 1, wherein said return means includes a sheet return plate for pushing the leading edge of a sheet to push back the sheet into said sheet cassette.

### Claim 4 (depends on 1)

A device as claimed in claim 1, wherein said drawing means includes at least one roller capable of being in contact with the upper most sheet of the sheets stacked in said sheet cassette and of rotating in a direction of drawing said contacted sheet out of said sheet cassette.

### Claim 5 (depends on 4)

A device as claimed in claim 4, wherein said return means includes means for rotating a reverse roller in a direction opposite to said drawing direction for a predetermined period of time while keeping said reverse roller in contact with said sheet being returned into said sheet cassette.

### Claim 6 (depends on 1)

A device as claimed in claim 1, wherein said device further comprises means for stopping the feed of a sheet not to be fed so as to prevent double feeding of the stacked sheets.

### Claim 7 (depends on 6)

A device as claimed in claim 6, wherein said device further comprises a feed roller movable between contact and noncontact positions with said stopping means, and drive means capable of driving said feed roller so as to selectively contact with or separate from said stopping means.

### Claim 8 (depends on 7)

A device as claimed in claim 7, wherein said device further comprises control means for actuating said sheet return means after said feed roller separates from said stopping means by said drive means.