Image reading device and printing apparatus
AssigneeFUJIFILM Corporation
InventorsYoshiyuki OKAYAMA, Takahiro INOUE
Life of this patent
Estimating the term…
Abstract
There are provided an image reading device and a printing apparatus that can reduce an influence of the shadows of suction holes. Suction holes, which are used to suck a sheet, are arranged on the peripheral surface of a drum that transports the sheet. The suction holes are arranged in grooves that are formed along a direction orthogonal to a transport direction. Accordingly, since an influence of the shadows of the suction holes can be reduced even in a case in which density unevenness is inspected on the basis of a read image, the false detection of density unevenness can be prevented.
Claims20
An image reading device comprising:
- a transport unit for transporting a sheet-like medium while sucking the medium on a medium holding surface on which suction holes are regularly arranged;
- and
- an image reading unit for reading an image from the medium transported by the transport unit,
- wherein grooves, which cross a holding area for the medium in a direction orthogonal to a transport direction, are regularly arranged along the transport direction on the medium holding surface, and the suction holes arranged on the medium holding surface are arranged in the grooves.
An image reading device comprising:
- a transport unit for transporting a sheet-like medium while sucking the medium on a medium holding surface on which suction holes are regularly arranged;
- and
- an image reading unit for reading an image from the medium transported by the transport unit,
- wherein when a line of the suction holes in a direction orthogonal to a transport direction is referred to as a row and a line of the suction holes in the transport direction is referred to as a column, the suction holes arranged on each row are arranged on the next columns of the suction holes arranged on the previous row, the same number of the suction holes are arranged on the respective columns, and the suction holes arranged on the respective columns are arranged so that the adjacent suction holes are adjacent to each other in a case in which the suction holes arranged on the respective columns are projected on a straight line orthogonal to the transport direction and parallel to the medium holding surface.
Dependencies are inferred from the claim text.