Patent US4833488A successfully refreshed from Google Patents.
US4833488A
Expired / Lapsed
US
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Thermal-optical recording head
Assignee: Fujifilm Holdings Corp
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Filing: 1987-10-07
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Granted: 1989-05-23
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Expires: 2007-10-07
Abstract
Abstract The ink jet method and thermal copying method have been developed as the method of obtaining hard copies in colors from terminals of data systems such as a computer. This inventive thermal recording apparatus can produce copies of clear images without color blurs or mixtures on multi-color heat-sensitive recording materials having a color developing mechanism which allows color development in desired hues. This invention recording head is small in size and low in cost, achieving recording of clear images without color blur at a higher speed.
Inventors
- 👤 Shigemitsu Mizutani
- 👤 Jun Yamaguchi
- 👤 Tadashi Miyakama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:32
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/315; B41J2/32; G; G03; G03C; G03C5/00; G03C5/18; G03D; G03D13/00; G03D13/002
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
176 words
A thermal recording head structure for use in a thermal recording apparatus of the type in which a sheet having heat sensitive recording material thereon is transported along a path for being first subjected to heat in selected portions for developing desired portions of the heat sensitive material and then subjected to light to decompose undesired portions of the recording material and then again subjected to heat to develop further desired portions, said head structure comprising: a substrate having a width corresponding to the width of the sheet to be transported; a plurality of at least two linear heating resistor member arrays extending parallel to each other and extending across substantially the entire width of said substrate transverse to the path of the sheet, said resistor member arrays being spaced from each other in the direction of transport of the sheet along the path; said substrate having a slit between said resistor member arrays and extending across substantially the entire width of said substrate for emitting light therethrough against the sheet being transported along the path.
Claim 2
Dependent Claim
176 words
A thermal recording head structure for use in a thermal recording apparatus of the type in which a sheet having heat sensitive recording material thereon is transported along a path for being first subjected to heat in selected portions for developing desired portions of the heat sensitive material and then subjected to light to decompose undesired portions of the recording material and then again subjected to heat to develop further desired portions, said head structure comprising: a substrate having a width corresponding to the width of the sheet to be transported; a plurality of at least two linear heating resistor member arrays extending parallel to each other and extending across substantially the entire width of said substrate transverse to the path of the sheet, said resistor member arrays being spaced from each other in the direction of transport of the sheet along the path; said substrate having a slit between said resistor member arrays and extending across substantially the entire width of said substrate for emitting light therethrough against the sheet being transported along the path.
Claim 3
Dependent Claim
22 words
The thermal recording head as claimed in claim 1 further comprising a driving circuit provided close to said heating resistor member arrays.
Claim 4
Dependent Claim
26 words
The thermal recording head as claimed in claim 1, further comprising light guide members each having one end embedded in a corresponding one of said slits.
Claim 5
Dependent Claim
19 words
The thermal recording head as claimed in claim 1, wherein the number of said heating resistor arrays is two.
Claim 6
Dependent Claim
36 words
The thermal recording head as claimed in claim 1, wherein the number of said heating resistor member arrays is at least three and said slits are provided between each pair of adjacent heating resistor member arrays.
References Cited (Backward Citations)
US4346449A
Cited
US4630073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |