Patent EP0090924A2 successfully refreshed from Google Patents.
US3662397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal sensitive recording medium responsive to force fields and apparatus for using same
Assignee: Honeywell Inc
•
Filing: 1969-09-25
•
Granted: 1972-05-09
•
Expires: 1989-09-25
Abstract
Abstract A recording medium is shown which is responsive to a magnetic or an electrostatic field for recording an input signal thereon. The recording medium includes a continuous web formed from a thermal sensitive material in which highly reflective flake-like particles are preoriented parallel to the plane thereof. These preoriented, reflective flake-like particles form a light background across the surface of the recording medium by reflecting ambient light therefrom. Exposure to a magnetic or an electrostatic field in response to an input signal reorients the reflective particles causing them to absorb ambient light for forming a recording trace thereon. Heat is utilized to permanently fix the recording trace upon the thermal sensitive recording medium.
Inventors
- 👤 Dale O Ballinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:53
CPC Classifications
G; G03; G03G; G03G16/00; G02; G02F; G02F1/00; G02F1/01; G02F1/17; G02F1/172; G03G5/00; G03G5/02; G03G5/022; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
21 words
A recorder as claimed in claim 1 wherein said thermal means includes a laser for generating said beam of electromagnetic energy.
Claim 2
Dependent Claim
34 words
A recorder as claimed in claim 1 wherein said displacement means includes electromagnetic energy reflecting means responsive to said input signal for selectively displacing said beam of electromagnetic energy across said continuous web member.
Claim 3
Dependent Claim
28 words
A recorder as claimed in claim 1 wherein said flake-like particles are electrically conductive and are responsive to an electrostatic force field and said force field means includes
Claim 4
Dependent Claim
224 words
A recorder for recording an input signal on a continuous web member formed from a thermoplastic material having highly reflective, force field responsive and flake-like particles contained therein and exposed to incident electromagnetic energy and said highly reflective flake-like particles being preoriented with their faces parallel with the plane of said continuous web member for reflecting incident electromagnetic energy therefrom thereby producing a uniform background surface on said continuous web member comprising: force field means for reorienting said preoriented flake-like particles within said continuous web member for absorbing incident electromagnetic energy therein; thermal means for generating a concentrated beam of electromagnetic energy upon said recording medium capable of softening said thermoplastic web member in the area of said beam through the thermal energy supplied by said beam and displacement means responsive to said input signal for selectively displacing said beam of electromagnetic energy across said continuous web member in an area encompassed by said force field means in response to said input signal for softening said web member along a recording line and concurrently allowing said force field means to reorient said flake-like particles along said recording line thus forming a recording trace; said thermoplastic material forming said continuous web member hardening after exposure to said thermal energy in said beam for permanently forming said recording trace as a recording of said input signal.
Claim 5
Dependent Claim
226 words
A recorder for recording an input signal on a continuous web member formed from a thermoplastic material having highly reflective, force field responsive and flake-like particles contained therein and exposed to incident electromagnetic energy with said particles being preoriented in a uniform relationship with a plane of said web member to provide a uniform background surface on said web member with respect to incident electromagnetic energy comprising; force field means for reorienting said preoriented particles within said web member to produce a contrasting relationship with respect to said preoriented particles for incident electromagnetic energy; thermal means for generating a concentrated beam of electromagnetic energy upon said web member capable of softening said thermoplastic web member in the area of said beam through the thermal energy supplied by said beam and displacement means responsive to said input signal for selectively displacing said beam of electromagnetic energy across said continuous web member in an area encompassed by said force field means in response to said input signal for softening said web member along a recording line and concurrently allowing said force field means to reorient said flake-like particles along said recording line thus forming a Recording trace; said thermoplastic material forming said continuous web member hardening after exposure to said thermal energy in said beam for permanently forming said recording trace as a recording of said input signal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |