US3686678A
Expired / Lapsed
US
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Dual mode electrostatic printing
Assignee: Xerox Corp
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Filing: 1969-03-10
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Granted: 1972-08-22
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Expires: 1989-03-10
Abstract
Abstract A dual operating mode electrostatic printer wherein input information from a remote apparatus is printed a line at a time at high speeds in a first operating mode and wherein information from a keyboard is printed a character at a time in a second low speed operating mode.
Inventors
- 👤 Neal R Robbins
- 👤 Howard Daniel Ring
- 👤 Gerard C Wright
- 👤 Theodore M Ceelen
- 👤 Stuart E Hotchkiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:12
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/221; B; B41; B41J; B41J2/00; B41J2/385; B41J2/41; G06; G06K; G06K15/00; G06K15/02; G06K15/14; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
282 words
Apparatus for printing characters in spaces on a recording medium, said apparatus being selectively operable in either a low or high speed mode of operation, comprising: a carriage slider having a stylus mounted thereon, support means located adjacent said recording medium for supporting said carriage slider, a first drive mechanism for selectively driving said carriage slider at a substantially constant rate across the recording medium between a first and second position on said support means, said first drive mechanism being operable in said high speed mode of operation, a second drive mechanism for selectively driving said carriage slider incrementally across the recording medium between said first and second positions on said support means, said second drive mechanism being operable in said low speed mode of operation, motor means for selectively driving said first or second drive mechanisms when coupled thereto, first means responsive to a first control signal for selectively coupling said motor means to said first drive mechanism for a first time period in said high speed mode of operation, said first time period being greater than that required to move said stylus continuously across one of said spaces, said stylus being actuated by a first input signal to print at least one character during said first time period, and second means responsive to a second control signal for selectively coupling said motor means to said second drive mechanism for a second time period in said low speed mode of operation, said second time period being that required to move said stylus an increment equal to a single one of said spaces, said stylus being actuated by a second input signal to print a single character during said second time period.
Claim 2
Dependent Claim
282 words
Apparatus for printing characters in spaces on a recording medium, said apparatus being selectively operable in either a low or high speed mode of operation, comprising: a carriage slider having a stylus mounted thereon, support means located adjacent said recording medium for supporting said carriage slider, a first drive mechanism for selectively driving said carriage slider at a substantially constant rate across the recording medium between a first and second position on said support means, said first drive mechanism being operable in said high speed mode of operation, a second drive mechanism for selectively driving said carriage slider incrementally across the recording medium between said first and second positions on said support means, said second drive mechanism being operable in said low speed mode of operation, motor means for selectively driving said first or second drive mechanisms when coupled thereto, first means responsive to a first control signal for selectively coupling said motor means to said first drive mechanism for a first time period in said high speed mode of operation, said first time period being greater than that required to move said stylus continuously across one of said spaces, said stylus being actuated by a first input signal to print at least one character during said first time period, and second means responsive to a second control signal for selectively coupling said motor means to said second drive mechanism for a second time period in said low speed mode of operation, said second time period being that required to move said stylus an increment equal to a single one of said spaces, said stylus being actuated by a second input signal to print a single character during said second time period.
Claim 3
Dependent Claim
24 words
The apparatus as defined in claim 1 wherein said second input signal is generated by actuation of a single character key on a keyboard.
Claim 4
Dependent Claim
27 words
The apparatus as defined in claim 2 wherein said first input signal is generated by means responsive to data transmitted from apparatus remote from said printing apparatus.
Claim 5
Dependent Claim
39 words
The apparatus as defined in claim 1 wherein said support means comprises a tubular member having a slot along a portion of the surface thereof, said carriage slider being driven within said slot between said first and second positions.
Claim 6
Dependent Claim
66 words
The apparatus as defined in claim 4 wherein said tubular member further includes means for retaining a compressible fluid medium at each end thereof, said medium being compressed within the non-slotted portion of said tubular member as said carriage slider moves towards either said first or second position, the compressed medium slowing the speed of the carriage slider as it nears said first or second position.
Claim 7
Dependent Claim
29 words
The apparatus as defined in claim 1 and including means for retracting said stylus from the recording medium during the return of said carriage slider to said first position.
Claim 8
Dependent Claim
72 words
The apparatus as defined in claim 1 wherein each character space comprises a plurality of equal length elements and further including means for generating an electrical pulse each time said stylus moves a distance equal to the length of a single element when said motor means is coupled to said second drive mechanism, each pulse actuating the stylus so that a portion of said single character is printed at a corresponding element.
Claim 9
Dependent Claim
21 words
The apparatus as defined in claim 1 wherein said first and second coupling means comprise first and second clutch means, respectively.
Claim 10
Dependent Claim
158 words
Apparatus for printing characters in spaces on a recording medium comprising: a carriage slider having a stylus mounted thereon, support means located adjacent said recording medium for supporting said carriage slider, a drive mechanism for driving said carriage slider across said record medium between a first and second position on said support means, means responsive to a control signal for selectively driving said drive mechanism for a period of time required to move said stylus an increment equal to a single one of said spaces, each character space comprising a plurality of equal length elements, said stylus being actuated by an input signal to print a single character during said time period, and means connected to said responsive means for generating an electrical pulse each time said stylus moves a distance equal to the length of a single element, each pulse actuating said stylus so that a portion of said single character is printed at a corresponding element.
Claim 11
Dependent Claim
158 words
Apparatus for printing characters in spaces on a recording medium comprising: a carriage slider having a stylus mounted thereon, support means located adjacent said recording medium for supporting said carriage slider, a drive mechanism for driving said carriage slider across said record medium between a first and second position on said support means, means responsive to a control signal for selectively driving said drive mechanism for a period of time required to move said stylus an increment equal to a single one of said spaces, each character space comprising a plurality of equal length elements, said stylus being actuated by an input signal to print a single character during said time period, and means connected to said responsive means for generating an electrical pulse each time said stylus moves a distance equal to the length of a single element, each pulse actuating said stylus so that a portion of said single character is printed at a corresponding element.
Claim 12
Dependent Claim
24 words
The apparatus as defined in claim 9 wherein said input signal is generated by the activation of a single character key on a keyboard.
Claim 13
Dependent Claim
41 words
The apparatus as defined in claim 9 wherein said support means comprises a tubular member having a slot along a portion of the surface thereof, said carriage slider being connected for movement within the slot between said first and second positions.
Claim 14
Dependent Claim
254 words
Apparatus for printing characters in spaces on a recording medium comprising: a carriage slider having a stylus mounted thereon, support means located adjacent said recording medium for supporting said carriage slider, said support means comprising a tubular member having a slot along a portion of the surface thereof, said carriage slider being connected for movement within the slot between a first and second position on said support means, said tubular member further including means for retaining a compressible fluid medium at each end thereof, whereby said medium is compressed within the non-slotted portion of said tubular member as said carriage slider moves towards either said first or second position, the compressed medium slowing the speed of the carriage slider as it approaches said first or second position, a drive mechanism for driving said carriage slider across said record medium between said first and second positions on said support means, means responsive to a control signal for selectivEly driving said drive mechanism for a period of time required to move said stylus an increment equal to a single one of said spaces, each character space comprising a plurality of equal length elements, said stylus being actuated by an input signal to print a single character during said time period, and means connected to said responsive means for generating an electrical pulse each time said stylus moves a distance equal to the length of a single element, each pulse actuating said stylus so that a portion of said single character is printed at a corresponding element.
Claim 15
Dependent Claim
254 words
Apparatus for printing characters in spaces on a recording medium comprising: a carriage slider having a stylus mounted thereon, support means located adjacent said recording medium for supporting said carriage slider, said support means comprising a tubular member having a slot along a portion of the surface thereof, said carriage slider being connected for movement within the slot between a first and second position on said support means, said tubular member further including means for retaining a compressible fluid medium at each end thereof, whereby said medium is compressed within the non-slotted portion of said tubular member as said carriage slider moves towards either said first or second position, the compressed medium slowing the speed of the carriage slider as it approaches said first or second position, a drive mechanism for driving said carriage slider across said record medium between said first and second positions on said support means, means responsive to a control signal for selectivEly driving said drive mechanism for a period of time required to move said stylus an increment equal to a single one of said spaces, each character space comprising a plurality of equal length elements, said stylus being actuated by an input signal to print a single character during said time period, and means connected to said responsive means for generating an electrical pulse each time said stylus moves a distance equal to the length of a single element, each pulse actuating said stylus so that a portion of said single character is printed at a corresponding element.
Claim 16
Dependent Claim
181 words
Apparatus for printing characters electrically on a recording medium comprising: a carriage slider having a stylus mounted thereon, support means located adjacent said recording medium and comprising a tubular member having a slot along a portion of the surface thereof, said carriage slider being driven within said slot between a first and second position, said tubular member including means for retaining a compressible fluid medium at each end thereof, whereby said medium is compressed within the non-slotted portion of said tubular member as said carriage slider moves towards either said first or second position, the compressed medium slowing the speed of the carriage slider as it approaches said first or second position, a drive mechanism for driving said carriage slider across said recording medium between said first and second positions on said support means, motor means for driving said drive mechanism when coupled thereto, and means responsive to a control signal for coupling said motor means to said drive mechanism, said stylus being actuated to print characters on said recording medium as the stylus is driven thereacross by said drive mechanism.
Claim 17
Dependent Claim
181 words
Apparatus for printing characters electrically on a recording medium comprising: a carriage slider having a stylus mounted thereon, support means located adjacent said recording medium and comprising a tubular member having a slot along a portion of the surface thereof, said carriage slider being driven within said slot between a first and second position, said tubular member including means for retaining a compressible fluid medium at each end thereof, whereby said medium is compressed within the non-slotted portion of said tubular member as said carriage slider moves towards either said first or second position, the compressed medium slowing the speed of the carriage slider as it approaches said first or second position, a drive mechanism for driving said carriage slider across said recording medium between said first and second positions on said support means, motor means for driving said drive mechanism when coupled thereto, and means responsive to a control signal for coupling said motor means to said drive mechanism, said stylus being actuated to print characters on said recording medium as the stylus is driven thereacross by said drive mechanism.
Claim 18
Dependent Claim
207 words
Apparatus for printing characters in spaces on a recording medium, said apparatus being selectively operable in either a low or high speed mode of operation, comprising: a carriage slider having a stylus mounted thereon, support means located adjacent said recording medium for supporting said carriage slider, means for driving said carriage slider across said recording medium, motor means for energizing said driving means when coupled thereto, first clutch means responsive to a first control signal for selectively coupling said motor means to said driving means for a first time period in said high speed mode of operation, said first time period being greater than that required to move said stylus continuously across one of said spaces, said stylus being actuated by a first input signal to print at least one character during said time period, and second clutch means responsive to a second control signal for selectively coupling said motor means to said driving means for a second time period in said low speed mode of operation, said second time period being that required to move said stylus an increment equal to a single one of said spaces, said stylus being actuated by a second input signal to print a single character during said second time period.
Claim 19
Dependent Claim
207 words
Apparatus for printing characters in spaces on a recording medium, said apparatus being selectively operable in either a low or high speed mode of operation, comprising: a carriage slider having a stylus mounted thereon, support means located adjacent said recording medium for supporting said carriage slider, means for driving said carriage slider across said recording medium, motor means for energizing said driving means when coupled thereto, first clutch means responsive to a first control signal for selectively coupling said motor means to said driving means for a first time period in said high speed mode of operation, said first time period being greater than that required to move said stylus continuously across one of said spaces, said stylus being actuated by a first input signal to print at least one character during said time period, and second clutch means responsive to a second control signal for selectively coupling said motor means to said driving means for a second time period in said low speed mode of operation, said second time period being that required to move said stylus an increment equal to a single one of said spaces, said stylus being actuated by a second input signal to print a single character during said second time period.
Claim 20
Dependent Claim
69 words
The apparatus as defined in claim 14 further including a rotatable driven member connected to said first clutch means and a rotatable driving member connected to said second clutch means, said first clutch means being coupled to said driving means by said rotatable driven member and said second clutch means being coupled to said driving means by the interface of said rotatable driving member with said rotatable driven member.
Claim 21
Dependent Claim
51 words
The apparatus as defined in claim 15 further including an actuable interposer for engaging said rotatable driven member when said second clutch means selectively couples said motor means to said driving means and after said stylus moves said one character space, thereby preventing said stylus from returning towards said first position.
Claim 22
Dependent Claim
39 words
The apparatus as defined in claim 14 wherein said support means comprises a tubular member having a slot along a portion of the surface thereof, said carriage slider bEing driven within said slot between a first and second position.
Claim 23
Dependent Claim
66 words
The apparatus as defined in claim 17 wherein said tubular member further includes means for retaining a compressible fluid medium at each end thereof, said medium being compressed within the non-slotted portion of said tubular member as said carriage slider moves towards either said first or second position, the compressed medium slowing the speed of the carriage slider as it nears said first or second position.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |