Patent US3869612A successfully refreshed from Google Patents.
US3869612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copy apparatus with means to effect visible ray imaging and infrared ray transfixing
Assignee: Xerox Corp
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Filing: 1973-12-28
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Granted: 1975-03-04
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Expires: 1993-12-28
Abstract
Abstract An original and heat sensitive member are exposed to a tungsten lamp rays to form a heat image on the heat sensitive member. During this exposure, a dichroic filter is in the ray path to filter out a substantial amount of infrared rays but allow visible rays to pass therethrough effecting a broader range of heat imaging a colored original. The image is developed with carbon black containing toner particles and a copy sheet and the developed heat sensitive sheet are exposed to the same ray path of the same lamp only with the filter removed to allow the infrared and visible rays to heat the toner particles for transfixing the same to the copy sheet. If desired, the toner particles can be fused to the heat sensitive sheet rather than transfixing the same to a copy sheet.
Inventors
- 👤 Myron J Lenhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:06
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/30; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
201 words
A copying apparatus comprising: a tungsten lamp for emanating energy at a high ratio of infrared to visible, a filter capable of allowing a substantial portion of visible rays emanated by said lamp to pass therethrough and for filtering a substantial amount of infrared rays to substantially reduce said energy ratio, means for energizing said lamp a first time when an original member having an image thereon to be copied and a heat sensitive member are at said station to form a heat image on said heat sensitive member, means for locating said filter in an operative position to be in the path of the rays emitted from said lamp when said lamp is energized said first time so that the heat sensitive member and said original member will be exposed to rays of said reduced energy ratio, means for energizing said lamp a second time when the heat sensitive member having a developed image thereon is at said ray path for heating the developed image, and means for withdrawing said filter from its operative position to allow said heat sensitive member to be exposed to visible energy and substantially more infrared energy when said lamp is energized the second time.
Claim 2
Dependent Claim
201 words
A copying apparatus comprising: a tungsten lamp for emanating energy at a high ratio of infrared to visible, a filter capable of allowing a substantial portion of visible rays emanated by said lamp to pass therethrough and for filtering a substantial amount of infrared rays to substantially reduce said energy ratio, means for energizing said lamp a first time when an original member having an image thereon to be copied and a heat sensitive member are at said station to form a heat image on said heat sensitive member, means for locating said filter in an operative position to be in the path of the rays emitted from said lamp when said lamp is energized said first time so that the heat sensitive member and said original member will be exposed to rays of said reduced energy ratio, means for energizing said lamp a second time when the heat sensitive member having a developed image thereon is at said ray path for heating the developed image, and means for withdrawing said filter from its operative position to allow said heat sensitive member to be exposed to visible energy and substantially more infrared energy when said lamp is energized the second time.
Claim 3
Dependent Claim
71 words
The structure as recited in claim 1 wherein means are provided to move the original member and the heat sensitive member as a sandwich across said ray path when the lamp is energized said first time and to move the heat sensitive member and a copy member as a sandwich across said ray path when the lamp is energized said second time to transfix the developed image to the copy member.
Claim 4
Dependent Claim
53 words
The structure as recited in claim 2 further comprising a developing station, means for transporting the heat sensitive member to the developing station and for returning the heat sensitive member to said ray path, and means for aligning the copy member with the developed heat sensitive member prior to entering said ray path.
Claim 5
Dependent Claim
56 words
The structure as recited in claim 3 further comprising a supply roll and a take-up roll, said rolls being so located that the heat sensitive member may extend across said ray path and through said station in web form with one end connected to said supply roll and the other end connected to said take-up roll.
Claim 6
Dependent Claim
34 words
The structure as recited in claim 1 further comprising a developing station, means for transporting the heat sensitive member to the developing station and for returning the heat sensitive member to said ray path.
Claim 7
Dependent Claim
56 words
The structure as recited in claim 5 further comprising a supply roll and a take-up roll, said rolls being so located that the heat sensitive member may extend across said ray path and through said stations in web form with one end connected to said supply roll and the other end connected to said take-up roll.
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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |