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US 5,850,235 AGranted
Printer
AssigneeSeiko Epson Corporation
InventorsKazuo Saito, Tsuyoshi Tomii, Seiichi Hirano, Kenichi Miyazaki
Life of this patent
Estimating the term…
Abstract
An ink jet printer including a feed roller for feeding paper to a print area where print is effected by an ink jet head, a transparent roller to transport the paper which rotates at a peripheral speed faster than a feed roller, and an ink shielding portion positioned between the paper the print area and the ink jet head. The ink jet printer may also include a shaft which supports starwheels at the ends thereof, the central portion thereof being urged toward a plurality of paper discharge rollers.
Claims15
An ink jet printer comprising:
- an ink jet head for effecting printing at a print area;
- at least one feed roller for feeding paper to said print area where printing is effected;
- at least one paper discharge roller disposed downstream of said feed roller relative to the print area;
- at least one gear operatively coupled to said at least one feed roller and said at least one paper discharge roller, at least one of said at least one feed roller and at least one paper discharge roller being dimensioned so that said at least one paper discharge roller rotates at a faster speed than that of said at least one feed roller thereby transporting said paper in such a manner as to stretch said paper between said at least one paper discharge roller and said at least one feed roller;
- and
- an ink shielding portion extending across said print area disposed so as to form a passage for said paper between said ink shielding portion and said ink jet head over the entire print area.
3 more elements
An ink jet printer comprising:
- an ink jet head for effecting printing at a print area;
- at least one feed roller for feeding paper to said print area where printing is effected;
- at least one paper discharge roller disposed downstream of said feed roller relative to the print area;
- at least one gear operatively coupled to said at least one feed roller and said at least one paper discharge roller, at least one of said at least one feed roller and at least one paper discharge roller being dimensioned so that said at least one paper discharge roller rotates at a faster speed than that of said at least one feed roller thereby transporting said paper in such a manner as to stretch said paper between said at least one paper discharge roller and said at least one feed roller;
- a guide member;
- and
- a pressing member spaced apart from and disposed above said guide member for pressing the paper over essentially an entire widthwise length of said paper, a pressing portion of said pressing member being disposed at a position between said at least one feed roller and said at least one paper discharge roller and where said pressing portion does not contact said at least one feed roller or said at least one paper discharge roller or said guide member.
4 more elements
An ink jet printer comprising:
- a frame;
- a printing area disposed within said frame for printing on a sheet;
- at least one paper discharge roller rotatable mounted within said frame;
- a support member connected to said frame having at least two supporting portions, each supporting portion having a slot therein;
- a shaft having two ends, each end being slideably supported within said slot of one of said at least two supporting portions;
- a pair of star wheels rotatably mounted at opposite ends of said shaft;
- said star wheels rotating to nip the sheet between said pair of star wheels and said at least one paper discharge roller when the sheet is conveyed in a sheet feed direction from said printing area to said star wheels;
- said shaft being slideable within said supporting portions in a direction substantially perpendicular to said sheet feed direction;
- and
- an urging member connected to said frame constructed to urge a central portion of said shaft toward said at least one paper discharge roller.
7 more elements
Dependencies are inferred from the claim text.