US 6,659,603 B2 · Ink jet recording method and apparatus having platen with extrusions positioned in one-to-one correspondence with roller nips

Abstract

An ink jet recording apparatus, which records with deposition of ink droplets onto a recording medium by use of an ink jet recording head, includes a platen for supporting a recording medium in a position facing the ink jet recording head, a plurality of carrier roller pairs for nipping and carrying the recording medium to the position of ink deposition by the ink jet recording head and extrusions extended in the carrying direction of the recording medium with respect to the platen and arranged in the direction intersecting the carrying direction of the recording medium to support the reverse side of recording medium. The carrier roller pairs are positioned on each of the extended lines of the extrusions on the upstream side relative to carrying direction of the recording medium. With the structure thus arranged, the floating of a recording medium from the platen can be suppressed so as to allow the gap to be formed narrower between the recording medium and recording head, hence making it possible to perform recording in higher quality.

Claims19

Dependent claims

An ink jet recording apparatus for recording by deposition of ink droplets onto a recording medium by use of an ink jet recording head, comprising:

a platen arranged in a position facing the ink jet recording head;
a plurality of pinching portions, defined by pressure contact between rollers for nipping and conveying the recording medium in a conveying direction to the position of ink deposition onto the recording medium using the ink jet recording head;
and
a plurality of extrusions extending in the conveying direction of the recording medium with respect to said platen, and being arranged on said platen in a direction intersecting the conveying direction of the recording medium to support the reverse side of the recording medium, each of said pinching portions being positioned on a respective one of extended lines of said extrusions on an upstream side with respect to the conveying direction of the recording medium so that each of said extrusions is in one-to-one correspondence with a respective one of said pinching portions.

1 more element

An ink jet recording apparatus provided with a carrier roller unit having a drive roller and a follower roller arranged on the upstream side of a recording area, and a platen arranged on the downstream side of said carrier roller unit for supporting a recording medium in a position facing a recording head, comprising:

nipping portions of said carrier roller unit for nipping the recording medium by cooperation of the drive roller and the follower roller thereof, and non-nipping portions;
a plurality of ribs arranged on said platen, each of said ribs being positioned on a respective one of extended lines of said nipping portions in the conveying direction of the recording medium so that each of said ribs is in one-to-one correspondence with a respective one of said nipping portions, and each rib extending in the conveying direction of the recording medium,
wherein in a standard position for conveying the recording medium, with one edge portion of the recording medium being aligned on one side, irrespective of the size of the recording medium, one of said plurality of ribs is arranged in a position inside the other edge of the recording medium by 1 mm to 10 mm.

Dependencies are inferred from the claim text.

Ink jet recording method and apparatus having platen with extrusions positioned in one-to-one correspondence with roller nips

Life of this patent

Ink jet recording method and apparatus having platen with extrusions positioned in one-to-one correspondence with roller nips

Life of this patent

Abstract

Claims19