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US 7,973,985 B2Granted
Scanning device
AssigneeElectronic Document Technology Pte. Ltd.
InventorsHin Leong Tan, Chang-Ming Liu
Life of this patent
Estimating the term…
Abstract
A scanning device scans both sides of a document. The document is fed between a first image sensor module and a second image sensor module. The second image sensor module is moved with respect to the first image sensor module so that a separation distance between the second image sensor module and the first image sensor module is based on a thickness of the document. A first side of the document is scanned using a first scan line located in the first image sensor module. A second side of the document is scanned using a second scan line located in the second image sensor module. When the document is fed between the first image sensor module and the second image sensor module, the document does not reach the first scan line and the second scan line simultaneously.
Claims22
A scanning device comprising:
- an input platform;
- a first image sensor module, the first image sensor module having a first scan line for scanning information from a first side of a document;
- a second image sensor module, the second image sensor module being mounted opposite the first image sensor module so that the document moves from the input platform to locations directly between the first image sensor module and the second image sensor module, the second image sensor module having a second scan line for scanning information from a second side of the document;
- and,
- a paper guide attached to the second image sensor module;
- wherein when the document moves from the input platform to locations between the first image sensor module and the second image sensor module, the document causes the second image sensor module to move with respect to the first image sensor module and to thus vary separation distance between the second image sensor module to move with respect to the first image sensor module based on a thickness of the document.
3 more elements
A scanning device comprising:
- an input platform;
- a first image sensor module, the first image sensor module having a first scan line for scanning information from a first side of a document;
- a second image sensor module, the second image sensor module being mounted opposite the first image sensor module so that the document moves from the input platform to locations between the first image sensor module and the second image sensor module, the second image sensor module having a second scan line for scanning information from a second side of the document;
- and,
- a paper guide attached to the second image sensor module;
- wherein when the document moves from the input platform to locations between the first image sensor module and the second image sensor module, the document causes the second image sensor module to move with respect to the first image sensor module and to thus vary separation distance between the second image sensor module to move with respect to the first image sensor module based on a thickness of the document;
- and,
- wherein the paper guide includes multiple discrete structures that are mounted along an edge of the second image sensor module that is closest to the input platform.
5 more elements
A scanning device comprising:
- an input platform;
- a first image sensor module, the first image sensor module having a first scan line for scanning information from a first side of a document;
- a second image sensor module, the second image sensor module being mounted opposite the first image sensor module so that the document moves from the input platform to locations between the first image sensor module and the second image sensor module, the second image sensor module having a second scan line for scanning information from a second side of the document;
- and,
- a paper guide attached to the second image sensor module;
- wherein when the document moves from the input platform to locations between the first image sensor module and the second image sensor module, the document causes the second image sensor module to move with respect to the first image sensor module and to thus vary separation distance between the second image sensor module to move with respect to the first image sensor module based on a thickness of the document;
- and,
- wherein the paper guide includes a roller and roller housing.
5 more elements
A scanning device comprising:
- an input platform;
- a first image sensor module, the first image sensor module having a first scan line for scanning information from a first side of a document;
- a second image sensor module, the second image sensor module being mounted opposite the first image sensor module so that the document moves from the input platform to locations between the first image sensor module and the second image sensor module, the second image sensor module having a second scan line for scanning information from a second side of the document;
- and,
- a paper guide attached to the second image sensor module;
- wherein when the document moves from the input platform to locations between the first image sensor module and the second image sensor module, the document causes the second image sensor module to move with respect to the first image sensor module and to thus vary separation distance between the second image sensor module to move with respect to the first image sensor module based on a thickness of the document;
- and,
- wherein when the second image sensor module moves with respect to the first image sensor module, all of the second image sensor module moves a uniform distances away from the first image sensor module.
5 more elements
A method for allowing a scanning device to scan both sides of a document, comprising:
- feeding the document directly between a first image sensor module and a second image sensor module;
- moving the second image sensor module with respect to the first image sensor module so that a separation distance between the second image sensor module and the first image sensor module is based on a thickness of the document;
- scanning a first side of the document using a first scan line located in the first image sensor module;
- and,
- scanning a second side of the document using a second scan line located in the second image sensor module;
- wherein when the document is fed between the first image sensor module and the second image sensor module, the document does not reach the first scan line and the second scan line simultaneously.
3 more elements
A method for allowing a scanning device to scan both sides of a document, comprising:
- feeding the document between a first image sensor module and a second image sensor module;
- moving the second image sensor module with respect to the first image sensor module so that a separation distance between the second image sensor module and the first image sensor module is based on a thickness of the document;
- scanning a first side of the document using a first scan line located in the first image sensor module;
- and,
- scanning a second side of the document using a second scan line located in the second image sensor module;
- wherein when the document is fed between the first image sensor module and the second image sensor module, the document does not reach the first scan line and the second scan line simultaneously;
- and,
- wherein when the second image sensor module moves with respect to the first image sensor module, all of the second image sensor module moves a uniform distances away from the first image sensor module.
5 more elements
A scanning device, comprising:
- first module means for scanning a first side of the document;
- and,
- second module means for scanning a second side of the document;
- feeding means for feeding a document directly between the first module means and the second module means;
- and,
- separating means for separating the first module means from the second module means when a document is fed therebetween, so that a separation distance between the first module means and the second module means is based on a thickness of the document;
- wherein the first module means starts scanning the first side of the document at a different time than the second module means starts scanning the second side of the document.
4 more elements
Dependencies are inferred from the claim text.