EP0564102A2
Expired / Lapsed
EP
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Wide inkjet printhead
Assignee: HP Inc
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Filing: 1993-03-08
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Granted: —
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Expires: 2013-03-08
Abstract
Abstract A wide inkjet printhead (10) is disclosed, wherein a pattern of orifices (16) are formed, using a step-and-repeat process, in a flexible tape using laser ablation or other suitable etching means. The location of the orifices corresponds to where ink will be ejected from the inkjet printhead. The pattern of orifices may extend to any length without difficulty in aligning the orifices, since the tape may be continuous along the entire length of the printhead.
Inventors
- 👤 Ross R. Allen
- 👤 Si-Ty Lam
- 👤 Paul H. Mclelland
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:02
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/16; B41J2/1621; B41J2/1632; B41J2/1634; B41J2/14; B41J2/14016; B41J2/14024; B41J2/14072; B41J2/145; B41J2/155; B41J2/162; B41J2/1623; B41J2/1626; B41J2/1631; B41J2002/14387; B41J2202/00; B41J2202/01; B41J2202/19; B41J2202/20
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
35 words
An inkjet printhead (10), characterised in that said printhead has repeated orifice array patterns formed in a length of polymer film using a step-and-repeat laser ablation process, said orifices within said array for expelling ink.
Claim 2
Dependent Claim
35 words
An inkjet printhead (10), characterised in that said printhead has repeated orifice array patterns formed in a length of polymer film using a step-and-repeat laser ablation process, said orifices within said array for expelling ink.
Claim 3
Dependent Claim
112 words
An inkjet printhead (10) comprising: a strip of material (18) having a plurality of groups of orifices (16) formed therein, a front surface of said strip for facing a recording medium for printing thereon; a fluid channel (88) communicating with an ink reservoir (12), said channel for allowing ink to flow proximate to said orifices; and a plurality of substrates (23) affixed to a back surface of said strip, each of said substrates opposing one group of orifices within said plurality of groups, each of said substrates containing individually energizable heating means (26) for vaporizing a portion of said ink proximate to an orifice (16) and expelling said ink from said orifice.
Claim 4
Dependent Claim
112 words
An inkjet printhead (10) comprising: a strip of material (18) having a plurality of groups of orifices (16) formed therein, a front surface of said strip for facing a recording medium for printing thereon; a fluid channel (88) communicating with an ink reservoir (12), said channel for allowing ink to flow proximate to said orifices; and a plurality of substrates (23) affixed to a back surface of said strip, each of said substrates opposing one group of orifices within said plurality of groups, each of said substrates containing individually energizable heating means (26) for vaporizing a portion of said ink proximate to an orifice (16) and expelling said ink from said orifice.
Claim 5
Dependent Claim
56 words
The inkjet printhead (10) of claim 1 wherein each of said substrates (230 contains a decoding or demultiplexing circuit (25) for decoding or demultiplexing respectively incoming signals and energizing one or more selected heating means (26), each of said substrates (23) having a larger number of individual heating means than interconnections to an external power source.
Claim 6
Dependent Claim
19 words
The inkjet printhead (10) of claim 1 wherein said fluid channel (88) is formed within said strip of material.
Claim 7
Dependent Claim
71 words
The inkjet printhead (10) of any of claims 2 to 4, wherein said plurality of groups of orifices (16) are formed in an array extending substantially across an entire width of a recording medium to be printed upon such that printing may be performed substantially across said entire width of said recording medium while said strip is fixed in position and said recording medium is moved with respect to said strip.
Claim 8
Dependent Claim
57 words
An inkjet printhead (10) comprising: a nozzle member (18) containing ink orifices (16); and a substrate (23) containing heating elements (26) associated with each of said orifices, said substrate having electrodes (92) formed thereon coupled to a decoder (25) also formed on said substrate for decoding signals applied to said electrodes for distribution to said heating elements.
Claim 9
Dependent Claim
57 words
An inkjet printhead (10) comprising: a nozzle member (18) containing ink orifices (16); and a substrate (23) containing heating elements (26) associated with each of said orifices, said substrate having electrodes (92) formed thereon coupled to a decoder (25) also formed on said substrate for decoding signals applied to said electrodes for distribution to said heating elements.
Claim 10
Independent Claim
112 words
A method of forming an inkjet printhead (10), comprising the steps of: forming a plurality of groups of orifices (16) in a strip of material; forming a fluid channel (88) for communicating with an ink reservoir (12), said channel allowing ink to flow proximate to said orifices; and affixing a plurality of substrates (23) to said strip, each of said substrates (23) opposing one group of orifices within said plurality of groups, each of said substrates containing heating elements (26), each of said heating elements being associated with one of said orifices (16) for vaporizing a portion of said ink in said channel (88) and expelling said ink from an associated orifice.
Claim 11
Independent Claim
112 words
A method of forming an inkjet printhead (10), comprising the steps of: forming a plurality of groups of orifices (16) in a strip of material; forming a fluid channel (88) for communicating with an ink reservoir (12), said channel allowing ink to flow proximate to said orifices; and affixing a plurality of substrates (23) to said strip, each of said substrates (23) opposing one group of orifices within said plurality of groups, each of said substrates containing heating elements (26), each of said heating elements being associated with one of said orifices (16) for vaporizing a portion of said ink in said channel (88) and expelling said ink from an associated orifice.
Claim 12
Dependent Claim
40 words
The method of claim 7, wherein said orifices (16) are formed using a step-and-repeat laser ablation process, wherein a masking means (108) defines a pattern of orifices on said strip and said strip is subjected to masked laser radiation (114).
Claim 13
Dependent Claim
18 words
The method of claim 8, wherein said fluid channel is also formed using said step-and-repeat laser ablation process.
Claim 14
Independent Claim
17 words
The method of any of claims 7 to 9, further comprising the step of aligning said substrates
Claim 15
Dependent Claim
40 words
(23), prior to said step of affixing, with respect to said orifices (16) by aligning said substrates with alignment targets formed on said strip of material, said alignment targets formed in a same manner as used to form said orifices.
Claim 16
Dependent Claim
40 words
(23), prior to said step of affixing, with respect to said orifices (16) by aligning said substrates with alignment targets formed on said strip of material, said alignment targets formed in a same manner as used to form said orifices.
References Cited (Backward Citations)
No citation records indexed.
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