Scanner, and image data generating method
AssigneeSeiko Epson Corporation
InventorsTakahiro Netsu, Toshifumi Sakai
Life of this patent
Estimating the term…
Abstract
A scanner reads a document using a sensor group and includes an optical member. When a scanning resolution in a main scanning direction is D, and a resolution of the sensor group is S, the optical member causes the sensor group to image light from the document magnified by a magnification ratio n, where n is greater than or equal to D/S and is greater than 1. The sensor group includes a plurality of sensor portions that are arrayed in L rows in a sub-scanning direction, and L is greater than or equal to n and is an integer of 3 or more. Each of the sensor portions reads a magnified image that is magnified by the magnification ratio n at each corresponding position in the main scanning direction of the document and that is guided by the optical member.
Claims5
A scanner that reads a document using a sensor group, the scanner comprising:
- an optical member including a plurality of mirrors or a plurality of lens, when a scanning resolution in a main scanning direction is D, and a resolution of the sensor group is S, the optical member causing the sensor group to image light from the document magnified by a magnification ratio n, where n is greater than or equal to D/S and is greater than 1,
- the sensor group including a plurality of sensor portions that are arrayed in L rows in a sub-scanning direction, L being greater than or equal to n that is an integer, each of the sensor portions reading a magnified image that is magnified by the magnification ratio n at each corresponding position in the main scanning direction of the document and that is guided by the mirror or lens,
- the plurality of mirrors or the plurality of lens including
- a first element guiding light from a first segment of the document to a first sensor portion in a first row among the sensor portions,
- a second element guiding light from a second segment of the document, which is separated in the main scanning direction from the first segment, to a second sensor portion in a second row among the sensor portions, and
- a third element guiding light from a third segment of the document between the first segment and the second segment to a third sensor portion in a third row among the sensor portions, and
- the first element and the second element being disposed without the third element being sandwiched therebetween.
A scanner that reads a document using a sensor group, the scanner comprising:
- an optical member including a plurality of mirrors or a plurality lens, when a scanning resolution in a main scanning direction is D, and a resolution of the sensor group is S, the optical member causing the sensor group to image light from the document magnified by a magnification ratio n, where n is greater than or equal to D/S and is greater than 1,
- the sensor group including a plurality of sensor portions that are arrayed in L rows in a sub-scanning direction, L being greater than or equal to n that is an integer, each of the sensor portions reading a magnified image that is magnified by the magnification ratio n at each corresponding position in the main scanning direction of the document and that is guided by the mirror or lens,
- the plurality of mirrors or the plurality of lens including
- a first element guiding light from a first segment of the document to a first sensor portion in a first row among the sensor portions,
- a second element guiding light from a second segment of the document, which is separated in the main scanning direction from the first segment, to a second sensor portion in a second row among the sensor portions, and
- a third element guiding light from a third segment of the document between the first segment and the second segment to a third sensor portion in a third row among the sensor portions, and
- the first sensor portion and the second sensor portion being disposed without the third sensor portion being sandwiched therebetween.
An image data generating method of a scanner having an optical member that includes a plurality of mirrors or a plurality of lens and, when a scanning resolution in a main scanning direction is D, and a resolution of a sensor group is S, magnifies light from a document by a magnification ratio n and causes the sensor group to image a magnified light, n being greater than or equal to D/S and being greater than 1, the sensor group including a plurality of sensor portions that are arrayed in L rows in a sub-scanning direction, L being greater than or equal to n that is an integer, each of the sensor portions reading a magnified image that is magnified by the magnification ratio n at each corresponding position in the main scanning direction of the document and is guided by the optical member, the image data generating method comprising:
- generating image data of the document at the scanning resolution D in the main scanning direction by combining image data read by the sensor portions that are arranged in the rows, respectively,
- the plurality of mirrors or the plurality of lens including
- a first element guiding light from a first segment of the document to a first sensor portion in a first row among the sensor portions,
- a second element guiding light from a second segment of the document, which is separated in the main scanning direction from the first segment, to a second sensor portion in a second row among the sensor portions, and
- a third element guiding light from a third segment of the document between the first segment and the second segment to a third sensor portion in a third row among the sensor portions, and
- the first element and the second element being disposed without the third element being sandwiched therebetween.
An image data generating method of a scanner having an optical member that includes a plurality of mirrors or a plurality of lens and, when a scanning resolution in a main scanning direction is D, and a resolution of a sensor group is S, magnifies light from a document by a magnification ratio n and causes the sensor group to image a magnified light, n being greater than or equal to D/S and being greater than 1, the sensor group including a plurality of sensor portions that are arrayed in L rows in a sub-scanning direction, L being greater than or equal to n that is an integer, each of the sensor portions reading a magnified image that is magnified by the magnification ratio n at each corresponding position in the main scanning direction of the document and is guided by the optical member, the image data generating method comprising:
- generating image data of the document at the scanning resolution D in the main scanning direction by combining image data read by the sensor portions that are arranged in the rows, respectively,
- the plurality of mirrors or the plurality of lens including
- a first element guiding light from a first segment of the document to a first sensor portion in a first row among the sensor portions,
- a second element guiding light from a second segment of the document, which is separated in the main scanning direction from the first segment, to a second sensor portion in a second row among the sensor portions, and
- a third element guiding light from a third segment of the document between the first segment and the second segment to a third sensor portion in a third row among the sensor portions, and
- the first sensor portion and the second sensor portion being disposed without the third sensor portion being sandwiched therebetween.
Dependencies are inferred from the claim text.