Patent US4381515A successfully refreshed from Google Patents.
US4381515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of pulsed droplet array crosstalk
Assignee: Xerox Corp
•
Filing: 1981-04-27
•
Granted: 1983-04-26
•
Expires: 2001-04-27
Abstract
Abstract A method for eliminating mechanical crosstalk in a drop-on-demand ink jet array by inducing electrical crosstalk using passive elements, which effectively neutralize the mechanical crosstalk.
Inventors
- 👤 Lee L. Bain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:29
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/015; B41J2/04; B41J2/045; B41J2/04501; B41J2/04525; B41J2/04541; B41J2/04581; B41J2/07
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
29 words
A method for reducing or eliminating mechanical crosstalk in a drop-on-demand droplet ejector array, which comprises: providing an induced electrical crosstalk, which at least partly offsets the mechanical crosstalk.
Claim 2
Independent Claim
29 words
A method for reducing or eliminating mechanical crosstalk in a drop-on-demand droplet ejector array, which comprises: providing an induced electrical crosstalk, which at least partly offsets the mechanical crosstalk.
Claim 3
Dependent Claim
26 words
The method of claim 1 wherein said electrical crosstalk is induced by provision of a passive electrical network connected to the drive circuitry of said array.
Claim 4
Dependent Claim
77 words
A circuit for compensating for positive mechanical crosstalk between adjacent channels of an ink jet array, each channel comprising an ink jet transducer coupled between an electrical driver and ground; the improvement comprising: a series resistor connecting said transducer to ground and at least one compensating resistor per channel connected from the driver side of each transducer, and at least one of said compensating resistor being connected to the ground side of at least one adjacent transducer.
Claim 5
Dependent Claim
77 words
A circuit for compensating for positive mechanical crosstalk between adjacent channels of an ink jet array, each channel comprising an ink jet transducer coupled between an electrical driver and ground; the improvement comprising: a series resistor connecting said transducer to ground and at least one compensating resistor per channel connected from the driver side of each transducer, and at least one of said compensating resistor being connected to the ground side of at least one adjacent transducer.
Claim 6
Dependent Claim
12 words
The circuit of claim 3 wherein said compensating resistors are variable resistors.
Claim 7
Independent Claim
65 words
A method for compensating for positive crosstalk between adjacent channels of an ink jet array, where each channel comprises an ink jet transducer coupled between an electrical driver and ground, comprising the steps of: connecting a resistor between ground and the ground side of each transducer and coupling a portion of the pulse at each driver output to the ground sides of said adjacent transducers.
Claim 8
Independent Claim
65 words
A method for compensating for positive crosstalk between adjacent channels of an ink jet array, where each channel comprises an ink jet transducer coupled between an electrical driver and ground, comprising the steps of: connecting a resistor between ground and the ground side of each transducer and coupling a portion of the pulse at each driver output to the ground sides of said adjacent transducers.
Claim 9
Dependent Claim
78 words
A circuit for compensating for negative mechanical crosstalk between adjacent channels of an ink jet array, each channel comprising an ink jet transducer coupled between an electrical driver and ground; the improvement comprising: a resistor in series with each transducer and its driver and one compensating resistor per channel connected at one end between the series resistor and transducer of a channel and connected at the opposite end between the series resistor and transducer of an adjacent channel.
Claim 10
Dependent Claim
78 words
A circuit for compensating for negative mechanical crosstalk between adjacent channels of an ink jet array, each channel comprising an ink jet transducer coupled between an electrical driver and ground; the improvement comprising: a resistor in series with each transducer and its driver and one compensating resistor per channel connected at one end between the series resistor and transducer of a channel and connected at the opposite end between the series resistor and transducer of an adjacent channel.
Claim 11
Dependent Claim
12 words
The circuit of claim 6 wherein said compensating resistors are variable resistors.
Claim 12
Independent Claim
82 words
A method for compensating for negative crosstalk between adjacent channels of an ink jet array, where each channel comprises an ink jet transducer coupled between an electrical driver and ground, comprising the steps of: connecting a series resistor between the driver and the transducer of each channel and connecting a compensating resistor at one end between said series resistor and said transducer and at the other end between said series resistor and the transducer of at least one of said adjacent channels.
Claim 13
Independent Claim
82 words
A method for compensating for negative crosstalk between adjacent channels of an ink jet array, where each channel comprises an ink jet transducer coupled between an electrical driver and ground, comprising the steps of: connecting a series resistor between the driver and the transducer of each channel and connecting a compensating resistor at one end between said series resistor and said transducer and at the other end between said series resistor and the transducer of at least one of said adjacent channels.
References Cited (Backward Citations)
US4158847A
Cited
US4074278A
Cited
US4156823A
Cited
US4216483A
Cited
US4251823A
Cited
US4282535A
Cited
US4215354A
Cited
US4243995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-25 | 1986-10-25 | 1987-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-25 | 1990-10-25 | 1991-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-25 | 1994-10-25 | 1995-04-26 | $7700.00 | Window Closed / Lapsed |