# US 6,721,072 B1 · Apparatus for scanning documents in front of a document plate

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- Number: US 6,721,072 B1
- Document ID: US6721072B1
- Status: Granted
- Kind: B1
- Application number: 09/661,469
- Filed: 2000-09-13
- Granted: 2004-04-13
- Earliest claimed: 2000-09-13
- Assignees: Mustek Systems Inc.
- Inventors: Jenn-Tsair Tsai; Albert Lu; Emmet Chen
- Web page: https://patentgrep.com/patent/US6721072B1

## CPC

- H04N 1/1013: {with sub-scanning by translatory movement of at least a part of the main-scanning components (H04N1/107 takes precedence)}
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

The present invention provides a scanning device. The scanning device comprises a document plate for placing a document, at least a sliding guide placed at one side of the document plate, a scanning module which is in front of the document plate for scanning the document along the direction of the sliding guide, a first light source assembled in the scanning module for providing light to scan documents, and a driving module electrically connected to the scanning module for driving the scanning module to perform scanning procedure to the document.

## Claims

### Claim 1

A scanning device comprising:
a housing;
a document plate within the upper surface of said housing for placing a document;
a first sliding guide outside of said housing mounted on said document plate;
a scanning module outside of said housing, wherein one side of said scanning module is connected to said first sliding guide to be movable along the direction of said first sliding guide;
a first light source assembled inside said scanning module for providing scan illumination; and
a driving module, electrically connected to said scanning module for driving said scanning module to scan said document.

### Claim 2 (depends on 1)

The scanning device of claim 1, wherein said document plate is a transparent plate.

### Claim 3 (depends on 2)

The scanning device of claim 2, further comprising:
a control module for coordinating on and off of said first light source and said second light source;
wherein said first light source turned on and said second light source turned off is for scanning a reflective document, and said first light source turned off and said second light source turned on is for scanning a transparent document.

### Claim 4 (depends on 3)

The scanning device of claim 3, wherein said second light source is a light tube, which is electrically connected to said driving module, said driving module synchronizes the movement of said scanning module and said light tube for scanning said transparent document.

### Claim 5 (depends on 1, 3)

The scanning device of claim 3, wherein said second light source is a light panel for providing light to scan said transparent document.
6.The scanning device of claim 1, further comprising a stand, pivoted on a bottom surface of said housing for supporting said housing in a declined position.

### Claim 7 (depends on 1)

The scanning device of claim 1, further comprising a transparent cover for holding said document on said document plate.

### Claim 8 (depends on 1)

The scanning device of claim 1, wherein said document is held on said document plate by static electric effect.

### Claim 9 (depends on 1)

The scanning device of claim 1, further comprising a transparent membrane for holding said document on said document plate.

### Claim 10 (depends on 1)

The scanning device of claim 1, wherein said scanning module is a contact image sensor.

### Claim 11 (depends on 1)

The scanning device of claim 1, further comprising a second sliding guide parallel to said first sliding guide, wherein said scanning module is able to move along the direction of the sliding guides.