Patent US4032918A successfully refreshed from Google Patents.
Patent EP0409596B1 successfully refreshed from Google Patents.
EP0409596B1
Expired / Lapsed
EP
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Ink jet recording apparatus
Assignee: Seiko Instruments Inc
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Filing: 1990-07-18
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Granted: 1994-06-15
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Expires: 2010-07-18
Abstract
No abstract record available.
Inventors
- 👤 Masaki C/O Seiko Instruments Inc. Denda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 18:48
CPC Classifications
B; B41; B41J; B41J11/00; B41J11/0085; B41J11/02; B41J11/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
Ink jet recording apparatus, comprising: a recording head (1) for ejecting ink droplets, in response to print data; a platen (2) for supporting a recording medium (6), said platen (2) having a plurality of openings (11a) arranged to cooperate with means (5) for generating a reduced pressure therein, to attract a recording medium, characterised in that said platen (2) has a flat section (11c) which is opposed to the recording head and extends over a region in which the recording head is operable to effect printing, and said openings are arranged to attract a recording medium onto said flat section.
Claim 2
Dependent Claim
37 words
Ink jet recording apparatus according to claim 1 characterised in that the openings are arranged such that a total opening area of the openings per unit surface area of the flat section varies in a width-wise direction.
Claim 3
Dependent Claim
28 words
Ink jet recording apparatus according to claim 2 characterised in that the total opening area of the openings per unit surface area is reduced in the width-wise direction.
Claim 4
Dependent Claim
31 words
Ink jet recording apparatus according to claim 2 or claim 3 characterised in that the total opening area is varied by changing the pitch between adjacent openings in the width-wise direction.
Claim 5
Dependent Claim
38 words
Ink jet recording apparatus according to claim 2 or 3 characterised in that the openings are generally circular and in that the total opening area is varied by changing the diameter of the openings in the width-wise direction.
Claim 6
Dependent Claim
18 words
Ink jet recording apparatus according to claim 5 characterised in that the openings have a relatively small diameter.
Claim 7
Dependent Claim
33 words
Ink jet recording apparatus according to any of claim 2 to 6 characterised in that the total opening area of the openings per unit surface area of the flat surface is varied successively.
Claim 8
Dependent Claim
21 words
Ink jet recording apparatus according to any preceding claim, wherein the recording head (1) is an on demand type recording head.
References Cited (Backward Citations)
No citation records indexed.
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