US4636818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonless system including solvent-only microcapsules
Assignee: Moore Business Forms Inc
•
Filing: 1985-06-05
•
Granted: 1987-01-13
•
Expires: 2005-06-05
Abstract
Abstract A carbonless system having improved imaging characteristics by the use of microcapsules containing only solvent is disclosed. The solvent-only capsules are disposed within a carbonless system to enhance the resulting image without the use of additional dye precursor.
Inventors
- 👤 Richard J. Jerabek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:41
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/165
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
138 words
In a carbonless copying system having a recording substrate, first and second mark-forming components capable of reacting with each other to produce a colored reaction product, and microcapsules having generally continuous walls encapsulating a first fill material, the first fill material comprising a solution or suspension containing the first mark-forming component, the improvement in combination therewith comprising, microcapsules having generally continuous walls encapsulating a second fill material, the second fill material consisting of solvent capable of dissolving either the first or the second mark-forming component or both, the microcapsules encapsulating the first fill material, the microcapsules encapsulating the second fill material, and the second mark-forming component being arranged in juxtaposed pressure-sensitive contact with respect to one another such that the application of marking pressure upon the carbonless system causes a colored marked to form on the recording substrate.
Claim 2
Dependent Claim
138 words
In a carbonless copying system having a recording substrate, first and second mark-forming components capable of reacting with each other to produce a colored reaction product, and microcapsules having generally continuous walls encapsulating a first fill material, the first fill material comprising a solution or suspension containing the first mark-forming component, the improvement in combination therewith comprising, microcapsules having generally continuous walls encapsulating a second fill material, the second fill material consisting of solvent capable of dissolving either the first or the second mark-forming component or both, the microcapsules encapsulating the first fill material, the microcapsules encapsulating the second fill material, and the second mark-forming component being arranged in juxtaposed pressure-sensitive contact with respect to one another such that the application of marking pressure upon the carbonless system causes a colored marked to form on the recording substrate.
Claim 3
Dependent Claim
29 words
The carbonless copying system of claim 1 wherein the first mark-forming component is a colorless dye precursor and the second mark-forming component is an acidic clay or phenolic resin.
Claim 4
Dependent Claim
23 words
The carbonless copying system of claim 2 wherein the second fill material is an organic solvent capable of dissolving the colorless dye precursor.
Claim 5
Dependent Claim
31 words
The carbonless copying system of claim 3 wherein the microcapsules encapsulating the second fill material and the second mark-forming component are coated over at least a portion of the recording substrate.
Claim 6
Dependent Claim
31 words
The carbonless copying system of claim 4 additionally comprising a transfer substrate wherein the microcapsules encapsulating the first fill material are coated over at least a portion of the transfer substrate.
Claim 7
Dependent Claim
40 words
The carbonless copying system of claim 3 additionally comprising a transfer substrate wherein the microcapsules encapsulating the second fill material and the microcapsules encapsulating the first fill material are both coated over at least a portion of the transfer substrate.
References Cited (Backward Citations)
US30041A
Cited
US30116A
Cited
US2299694A
Cited
US2712507A
Cited
US3016308A
Cited
US3429827A
Cited
US3720534A
Cited
US3672935A
Cited
US3663256A
Cited
GB1290369A
Cited
US4003589A
Cited
GB1417206A
Cited
US4071469A
Cited
USRE30041E
Cited
USRE30116E
Cited
US4096314A
Cited
US4147830A
Cited
US4343944A
Cited
US4355823A
Cited
US4187233A
Cited
US4295662A
Cited
US4130299A
Cited
US4316036A
Cited
US4211436A
Cited
US4372581A
Cited
US4250098A
Cited
US4335013A
Cited
US4309047A
Cited
US4287074A
Cited
US4398753A
Cited
US4363503A
Cited
US4343939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-12 | 1990-07-14 | 1991-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-12 | 1994-07-14 | 1995-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-12 | 1998-07-14 | 1999-01-13 | $7700.00 | Window Closed / Lapsed |