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US4646107A
Expired / Lapsed
US
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XY plotter apparatus
Assignee: Pilot Corp
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Filing: 1986-01-02
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Granted: 1987-02-24
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Expires: 2006-01-02
Abstract
Abstract An XY plotter apparatus includes a magnetic panel, a writing tool for applying a magnetic field, a writing tool drive and an erasing magnetic field generator. The writing tool consists of an electromagnet which is arranged so that specified characters and figures may be displayed at a high speed on a magnetic panel by the writing tool. Data of a figure to be displayed is inputted into the writing tool drive so as to generate signals for position control and a signal for actuating a switch for a coil inside the electromagnet.
Inventors
- 👤 Takanori Shimizu
- 👤 Masahiko Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:21
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/22; G01; G01D; G01D15/00; G01D15/12; G01D9/00; G01D9/38
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
269 words
An XY plotter apparatus comprising: a magnetic panel having two plates of which one at least is transparent and a sealing dispersion liquid which dispersedly suspends fine magnetic particles between said two plates, a writing tool for applying a magnetic field to display a figure on said magnetic panel, which has an electromagnet having at least a core and a coil, a writing tool driving device which drives said writing tool to a prescribed position by contacting said writing tool with said magnetic panel, a control means which controls the driving of said writing tool driving device and the current for said writing tool, and an erasing magnetic field generating device, wherein said writing tool is kept in contact with said magnetic panel by a spring, and wherein said control means includes a data processing unit, an X direction drive circuit, a Y direction drive circuit, a current ON/OFF switch for said coil of said electromagnet and a control circuit for said current ON/OFF switch, and wherein the data comprising the X-axis and Y-axis coordinate signals corresponding to a figure to be displayed and control data for said current ON/OFF switch are inputted to said data processing unit so that, the X-axis and Y-axis coordinate signals are fed to said writing tool driving device and the control data is inputted to said control circuit, and wherein a signal for switching said current ON/OFF switch from an ON state to an OFF state is generated by said control circuit while said writing tool moves from the position where the specified display is completed to a position for starting next display.
Claim 2
Dependent Claim
269 words
An XY plotter apparatus comprising: a magnetic panel having two plates of which one at least is transparent and a sealing dispersion liquid which dispersedly suspends fine magnetic particles between said two plates, a writing tool for applying a magnetic field to display a figure on said magnetic panel, which has an electromagnet having at least a core and a coil, a writing tool driving device which drives said writing tool to a prescribed position by contacting said writing tool with said magnetic panel, a control means which controls the driving of said writing tool driving device and the current for said writing tool, and an erasing magnetic field generating device, wherein said writing tool is kept in contact with said magnetic panel by a spring, and wherein said control means includes a data processing unit, an X direction drive circuit, a Y direction drive circuit, a current ON/OFF switch for said coil of said electromagnet and a control circuit for said current ON/OFF switch, and wherein the data comprising the X-axis and Y-axis coordinate signals corresponding to a figure to be displayed and control data for said current ON/OFF switch are inputted to said data processing unit so that, the X-axis and Y-axis coordinate signals are fed to said writing tool driving device and the control data is inputted to said control circuit, and wherein a signal for switching said current ON/OFF switch from an ON state to an OFF state is generated by said control circuit while said writing tool moves from the position where the specified display is completed to a position for starting next display.
Claim 3
Dependent Claim
29 words
An XY plotter apparatus in accordance with claim 1, wherein data to be displayed which is inputted into said writing tool is obtained from a hand-drawn figure input device.
Claim 4
Dependent Claim
37 words
An XY plotter apparatus in accordance with claim 1, wherein data to be displayed which is inputted into said writing tool drive device for controlling the position of the writing tool is obtained from a personal computer.
Claim 5
Dependent Claim
22 words
An XY plotter apparatus in accordance with claim 1, wherein an alternating current is applied to the electromagnet of said writing tool.
Claim 6
Dependent Claim
37 words
An XY plotter apparatus in accordance with claim 1, wherein a plurality of writing tools are provided and different data to be displayed are applied to said writing tools, respectively for simultaneously displaying both letters and figures.
Claim 7
Dependent Claim
42 words
An XY plotter apparatus in accordance with claim 1, wherein said erasing magnetic field generating device is actuated by a data signal for displaying operation when said data signal is inputted and subsequently the data signal is applied to the writing tools.
Claim 8
Dependent Claim
22 words
An XY plotter apparatus in accordance with claim 2, wherein an alternating current is applied to the electromagnet of said writing tool.
Claim 9
Dependent Claim
22 words
An XY plotter apparatus in accordance with claim 3, wherein an alternating current is applied to the electromagnet of said writing tool.
Claim 10
Dependent Claim
37 words
An XY plotter apparatus in accordance with claim 2, wherein a plurality of writing tools are provided and different data to be displayed are respectively applied to said writing tools for simultaneously displaying both figures and letters.
Claim 11
Dependent Claim
37 words
An XY plotter apparatus in accordance with claim 3, wherein a plurality of writing tools are provided and different data to be displayed are respectively applied to said writing tools for simultaneously displaying both figures and letters.
Claim 12
Dependent Claim
37 words
An XY plotter apparatus in accordance with claim 4, wherein a plurality of writing tools are provided and different data to be displayed are respectively applied to said writing tools for simultaneously displaying both figures and letters.
Claim 13
Dependent Claim
42 words
An XY plotter apparatus in accordance with claim 2, wherein said erasing magnetic field generating device is actuated by a data signal for displaying operation when said data signal is inputted and subsequently the data signal is applied to the writing tools.
Claim 14
Dependent Claim
42 words
An XY plotter apparatus in accordance with claim 3, wherein said erasing magnetic field generating device is actuated by a data signal for displaying operation when said data signal is inputted and subsequently the data signal is applied to the writing tools.
Claim 15
Dependent Claim
42 words
An XY plotter apparatus in accordance with claim 4, wherein said erasing magnetic field generating device is actuated by a data signal for displaying operation when said data signal is inputted and subsequently the data signal is applied to the writing tools.
Claim 16
Dependent Claim
42 words
An XY plotter apparatus in accordance with claim 5, wherein said erasing magnetic field generating device is actuated by a data signal for displaying operation when said data signal is inputted and subsequently the data signal is applied to the writing tools.
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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) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |