Patent US3854399A successfully refreshed from Google Patents.
US3854399A
Expired / Lapsed
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Method and means for operating an ink jet printer without splatter
Assignee: AB Dick Co
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Filing: 1972-12-29
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Granted: 1974-12-17
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Expires: 1992-12-29
Abstract
Abstract In an ink drop printer, an impacting drop may cause spatter which acts as a fog settling over various parts of the machine and printer media. The drops are maintained intact by directing a flow of gas to intercept only the terminating portion of the path of said ink drops just prior to and at the time of impacting upon a region of paper and to cover the region of said paper upon which the ink drops fall, whereby the deleterious effects of spatter may be eliminated.
Inventors
- 👤 R Keur
- 👤 H Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:49
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/20; B41J2/015; B41J2/02; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
In an ink drop printer of the type wherein charged drops are projected by means through air, through a deflecting electric field toward paper, located beyond said deflecting electric field, to fall thereon at a location determined in accordance with the reaction between their charge and the electric field, means for eliminating the effects of spatter caused by said drops impacting on said paper comprising: means for directing a flow of gas to intercept only the terminating portion of the path of said ink drops just prior to and at the time of impacting upon said region of said paper and to cover the region of said paper upon which said ink drops fall, for maintaining said drops intact.
Claim 2
Dependent Claim
119 words
In an ink drop printer of the type wherein charged drops are projected by means through air, through a deflecting electric field toward paper, located beyond said deflecting electric field, to fall thereon at a location determined in accordance with the reaction between their charge and the electric field, means for eliminating the effects of spatter caused by said drops impacting on said paper comprising: means for directing a flow of gas to intercept only the terminating portion of the path of said ink drops just prior to and at the time of impacting upon said region of said paper and to cover the region of said paper upon which said ink drops fall, for maintaining said drops intact.
Claim 3
Dependent Claim
86 words
In an ink drop printer as recited in claim 1 wherein said means for directing said flow of gas at the region of said paper upon which said ink drops fall comprises: blower means for generating a beam of gas having a cross-sectional area sufficiently large to cover the region on said paper upon which said ink drops fall; and means for directing said beam of gas at an angle with the normal to said paper which provides a minimum of interference with the drop trajectory.
Claim 4
Dependent Claim
31 words
In an ink drop printer as recited in claim 2 wherein said angle made by said beam of gas with the normal to said paper is on the order of 15*.
Claim 5
Dependent Claim
42 words
In an ink drop printer as recited in claim 1 further comprising: means for directing a vacuum at the rear of said paper behind the region of said paper upon which said ink drops fall for maintaining said impacting ink drops intact.
Claim 6
Dependent Claim
40 words
In an ink drop printer as recited in claim 4 wherein there is included a porous plate means for supporting the region of said paper, at the rear thereof, to which said means for applying a vacuum applies said vacuum.
Claim 7
Dependent Claim
122 words
In an ink drop printer of the type wherein charged drops are projected by means through air, through a deflecting electric field toward paper located beyond said deflecting field to fall thereon at a location determined in accordance with the reaction between their charge and the electric field, the method of maintaining the drops intect at the location where said drops impact on said paper comprising: directing a flow of gas at the region of said paper upon which said ink drops fall from one side of the path of said ink drops toward said paper, at an angle which intercepts the path of said ink drops just prior to and at the time of impacting upon said region of said paper.
Claim 8
Dependent Claim
122 words
In an ink drop printer of the type wherein charged drops are projected by means through air, through a deflecting electric field toward paper located beyond said deflecting field to fall thereon at a location determined in accordance with the reaction between their charge and the electric field, the method of maintaining the drops intect at the location where said drops impact on said paper comprising: directing a flow of gas at the region of said paper upon which said ink drops fall from one side of the path of said ink drops toward said paper, at an angle which intercepts the path of said ink drops just prior to and at the time of impacting upon said region of said paper.
References Cited (Backward Citations)
US2577894A
Cited
US2676868A
Cited
US2842053A
Cited
US3011435A
Cited
US3596275A
Cited
US3417734A
Cited
US3369252A
Cited
US3298030A
Cited
US3400656A
Cited
US3363545A
Cited
US3411482A
Cited
US3515064A
Cited
US3595994A
Cited
US3681778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |