Patent US3111666A successfully refreshed from Google Patents.
US3852772A
Expired / Lapsed
US
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Mechanically cycled ink jet printer
Assignee: Recognition Equipment Inc
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Filing: 1971-09-03
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Granted: 1974-12-03
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Expires: 1991-09-03
Abstract
Abstract A mechanically cycled ink jet printer nozzle, through which a stream of ink passes and from which there issues a stream of droplets of ink, is laterally vibrated to cause the stream of droplets to follow a cyclic trajectory or pattern such as a sine wave. Droplets in portions of the pattern then are selected to remain uncharged and impinge a document to print thereon. For nonselected portions, the droplets are charged and deflected to a catcher to avoid printing.
Inventors
- 👤 R Hecht
- 👤 H Faulkner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:40
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/07; B41J2/105
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
206 words
An ink jet printer for printing a line of data on a document during relative movement between the printer and the document which comprises: a. a nozzle structure for projecting a stream of ink droplets toward the document, said nozzle structure includes a metal mounting bar, b. means for mechanically moving the nozzle cyclically in a direction lateral to the axis of the nozzle to cyclically alter the direction of travel of successive droplets and produce a droplet pattern, said moving means includes a pair of field coils located on opposite sides of said mounting bar, and means for cyclically energizing said coils to repeatedly deflect said mounting bar between said coils, c. means for selectively charging the droplets issuing from the nozzle to a potential above a predetermined level, d. means for establishing a deflecting field in a region through which the droplets pass, e. an ink catcher adjacent to the path of said droplets, and f. control means synchronized with the movement of the nozzle for selectively energizing said charging means to charge the droplets in those portions of the droplet pattern not desired on the document whereby the reaction of the charged droplets with said field directs said charged droplets into said catcher.
Claim 2
Dependent Claim
206 words
An ink jet printer for printing a line of data on a document during relative movement between the printer and the document which comprises: a. a nozzle structure for projecting a stream of ink droplets toward the document, said nozzle structure includes a metal mounting bar, b. means for mechanically moving the nozzle cyclically in a direction lateral to the axis of the nozzle to cyclically alter the direction of travel of successive droplets and produce a droplet pattern, said moving means includes a pair of field coils located on opposite sides of said mounting bar, and means for cyclically energizing said coils to repeatedly deflect said mounting bar between said coils, c. means for selectively charging the droplets issuing from the nozzle to a potential above a predetermined level, d. means for establishing a deflecting field in a region through which the droplets pass, e. an ink catcher adjacent to the path of said droplets, and f. control means synchronized with the movement of the nozzle for selectively energizing said charging means to charge the droplets in those portions of the droplet pattern not desired on the document whereby the reaction of the charged droplets with said field directs said charged droplets into said catcher.
Claim 3
Dependent Claim
202 words
An ink jet printer for printing a line of data on a document during relative movement between the printer and the document which comprises: a. a nozzle structure for projecting a stream of ink dropletS toward the document, said nozzle structure includes a metal mounting bar; b. means for mechanically moving the nozzle cyclically at a constant frequency and amplitude in a direction lateral to the axis of the nozzle to cyclically alter the direction of travel of successive droplets and produce a droplet pattern, said moving means includes: a pair of field coils located on opposite sides of said mounting bar; and means for cyclically energizing said coils to repeatedly deflect said mounting bar between said coils; c. means for selectively charging the droplets issuing from the nozzle to a potential above a predetermined level; d. means for establishing an electric field in a region through which the droplets pass; and e. control means synchronized with the movement of the nozzle for selectively energizing said charging means to charge the droplets in those portions of the droplet pattern not desired on the document whereby the reaction of the charged droplets with said field prevents said charged droplets from reaching said document.
Claim 4
Dependent Claim
202 words
An ink jet printer for printing a line of data on a document during relative movement between the printer and the document which comprises: a. a nozzle structure for projecting a stream of ink dropletS toward the document, said nozzle structure includes a metal mounting bar; b. means for mechanically moving the nozzle cyclically at a constant frequency and amplitude in a direction lateral to the axis of the nozzle to cyclically alter the direction of travel of successive droplets and produce a droplet pattern, said moving means includes: a pair of field coils located on opposite sides of said mounting bar; and means for cyclically energizing said coils to repeatedly deflect said mounting bar between said coils; c. means for selectively charging the droplets issuing from the nozzle to a potential above a predetermined level; d. means for establishing an electric field in a region through which the droplets pass; and e. control means synchronized with the movement of the nozzle for selectively energizing said charging means to charge the droplets in those portions of the droplet pattern not desired on the document whereby the reaction of the charged droplets with said field prevents said charged droplets from reaching said document.
Claim 5
Dependent Claim
199 words
An ink jet printer for printing a line of data on a document during relative movement between the printer and the document which comprises: a. a nozzle structure for projecting a stream of ink droplets toward the document, b. means for mechanically moving the nozzle cyclically in a direction lateral to the axis of the nozzle to cyclically alter the direction of travel of successive droplets and produce a droplet pattern, said moving means includes a serrated plate mounted for movement in a direction transverse to the axis of said nozzle whereby contact of the serrations with said nozzle induce cyclic vibrations in said nozzle, c. means for selectively charging the droplets issuing from the nozzle to a potential above a predetermined level, d. means for establishing a deflecting field in a region through which the droplets pass, e. an ink catcher adjacent to the path of said droplets, and f. control means synchronized with the movement of the nozzle for selectively energizing said charging means to charge the droplets in those portions of the droplet pattern not desired on the document whereby the reaction of the charged droplets with said field directs said charged droplets into said catcher.
Claim 6
Dependent Claim
199 words
An ink jet printer for printing a line of data on a document during relative movement between the printer and the document which comprises: a. a nozzle structure for projecting a stream of ink droplets toward the document, b. means for mechanically moving the nozzle cyclically in a direction lateral to the axis of the nozzle to cyclically alter the direction of travel of successive droplets and produce a droplet pattern, said moving means includes a serrated plate mounted for movement in a direction transverse to the axis of said nozzle whereby contact of the serrations with said nozzle induce cyclic vibrations in said nozzle, c. means for selectively charging the droplets issuing from the nozzle to a potential above a predetermined level, d. means for establishing a deflecting field in a region through which the droplets pass, e. an ink catcher adjacent to the path of said droplets, and f. control means synchronized with the movement of the nozzle for selectively energizing said charging means to charge the droplets in those portions of the droplet pattern not desired on the document whereby the reaction of the charged droplets with said field directs said charged droplets into said catcher.
Claim 7
Dependent Claim
196 words
An ink jet printer for printing a line of data on a document during relative movement between the printer and the document which comprises: a. a nozzle structure for projecting a stream of ink droplets toward the document; b. means for mechanically moving the nozzle cyclically at a constant frequency and amplitude in a direction lateral to the axis of the nozzle to cyclically alter the direction of travel of successive droplets and produce a droplet pattern, said moving means includes a serrated plate mounted for movement in a direction transverse to the axis of said nozzle whereby said contact of the serrations with said nozzle induce cyclic vibrations in said nozzle; c. means for selectively charging the droplets issuing from the nozzle to a potential above a predetermined level; d. means for establishing an electric field in a region through which the droplets pass; and e. control means synchronized with the movement of the nozzle for selectively energizing said charging means to charge the droplets in those portions of the droplet pattern not desired on the document whereby the reaction of the charged droplets with said field prevents said charged droplets from reaching said document.
Claim 8
Dependent Claim
196 words
An ink jet printer for printing a line of data on a document during relative movement between the printer and the document which comprises: a. a nozzle structure for projecting a stream of ink droplets toward the document; b. means for mechanically moving the nozzle cyclically at a constant frequency and amplitude in a direction lateral to the axis of the nozzle to cyclically alter the direction of travel of successive droplets and produce a droplet pattern, said moving means includes a serrated plate mounted for movement in a direction transverse to the axis of said nozzle whereby said contact of the serrations with said nozzle induce cyclic vibrations in said nozzle; c. means for selectively charging the droplets issuing from the nozzle to a potential above a predetermined level; d. means for establishing an electric field in a region through which the droplets pass; and e. control means synchronized with the movement of the nozzle for selectively energizing said charging means to charge the droplets in those portions of the droplet pattern not desired on the document whereby the reaction of the charged droplets with said field prevents said charged droplets from reaching said document.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |