Back to results
US 6,323,933 B1Granted
Image reading device and method
AssigneeFujitsu Limited
InventorToshiaki Anzai
Life of this patent
Estimating the term…
Abstract
It is an exemplified object of the present invention is to provide an image reading device and method that would realize a high-resolution image reading. The present invention connects to a movable optical system in a double-sided image readable device at least one of black and white references that a fixed side should referred to.
Claims10
An image reading device comprising:
- a first optical system which reads one surface of a document;
- a drive part which moves said first optical system;
- a second optical system which reads the other surface of a document;
- a first white reference part and a first black reference part readable by said first optical system moved by said drive part;
- a second white reference part and a second black reference part readable by said second optical system, at least one of said second white and second black reference parts being arranged to be movable to a position at which said second optical system reads the moveable reference part;
- and
- a control part which controls said first optical system, drive part, and second optical system.
4 more elements
An image reading method comprising:
- a first step of reading one surface of a document using a first optical system and the other surface of the document using a second optical system;
- a second step of moving the first optical system and first white reference part relative to each other, and reading the first white reference part using the first optical system;
- a third step of moving the first optical system and first black reference part relative to each other, and reading the first black reference part using the first optical system;
- a fourth step of moving one of second white reference part and second black reference part relative to each other, and reading said one of the second white and black reference parts using the second optical system;
- and
- a fifth step of reading the other of the second white and black reference parts using the second optical system.
3 more elements
Dependencies are inferred from the claim text.