Ink jet printer having improved paper transport mechanism
AssigneeRicoh Company, Ltd.
InventorShigeru Suzuki
Life of this patent
Estimating the term…
Abstract
An ink jet printer includes paper supply rollers for supplying a paper, paper eject rollers for ejecting the paper supplied from the paper supply rollers, where the paper is transported along a paper transport direction in an approximately plane paper supply path between the paper supply and eject rollers, a nozzle for ejecting ink on the paper in a printing region between the paper supply and eject rollers, and a guide part for guiding the paper between the paper supply and eject rollers. A gap is formed between the guide part and the paper which is simultaneously transported by both the paper supply and eject rollers at least within the printing region. The gap decreases in the paper transport direction towards the paper eject rollers.
Claims17
An ink jet printer comprising:
- first roller means for supplying a paper;
- second roller means for ejecting the paper supplied from said first roller means, said paper being transported along a paper transport direction in an approximately plane paper supply path between said first and second roller means;
- a nozzle for ejecting ink on the paper in a printing region between said first and second roller means;
- and
- guide means for guiding the paper between said first and second roller means, said guide means and said nozzle being located on mutually opposite sides relative to the paper,
- a gap being formed between said guide means and the paper which is simultaneously transported by both said first and second roller means at least within the printing region,
- said gap decreasing in the paper transport direction towards said second roller means.
An ink jet printer comprising:
- first roller means for supplying a paper;
- second roller means for ejecting the paper supplied from said first roller means, said paper being transported along a paper transport direction in an approximately plane paper supply path between said first and second roller means;
- a nozzle for ejecting ink on the paper in a printing region between said first and second roller means;
- and
- guide means for guiding the paper between said first and second roller means,
- a gap being formed between said guide means and the paper which is simultaneously transported by both said first and second roller means at least within the printing region,
- said gap decreasing in the paper transport direction towards said second roller means;
- wherein said guide means includes a plurality of fins which are arranged in a predetermined direction approximately perpendicular to the paper transport direction.
An ink jet printer comprising:
- first roller means for supplying a paper;
- second roller means for ejecting the paper supplied from said first roller means, said paper being transported along a paper transport direction in an approximately plane paper supply path between said first and second roller means;
- a nozzle for ejecting ink on the paper in a printing region between said first and second roller means;
- and
- guide means for guiding the paper between said first and second roller means,
- a gap being formed between said guide means and the paper which is simultaneously transported by both said first and second roller means at least within the printing region,
- said gap decreasing in the paper transport direction towards said second roller means;
- wherein said guide means includes an ink absorbing member for absorbing the ink ejected from said nozzle.
An ink jet printer comprising:
- first roller means for supplying a paper;
- second roller means for ejecting the paper supplied from said first roller means, said paper being transported along a paper transport direction in an approximately plane paper supply path between said first and second roller means;
- a nozzle for ejecting ink on the paper in a printing region between said first and second roller means;
- and
- guide means for guiding the paper between said first and second roller means,
- a gap being formed between said guide means and the paper which is simultaneously transported by both said first and second roller means at least within the printing region,
- said gap decreasing in the paper transport direction towards said second roller means;
- wherein said guide means includes a casing having an opening defined by top edge parts thereof, and a plurality of guide members traversing the opening generally along the paper transport direction, each of said guide members having a top surface which forms a guide surface together with the top edge parts of the casing, said gap being defined as a distance between the guide surface and a surface of the paper closer to said guide means.
Dependencies are inferred from the claim text.