Patent US1786138A successfully refreshed from Google Patents.
US4714943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging device
Assignee: Brother Industries Ltd
•
Filing: 1987-03-04
•
Granted: 1987-12-22
•
Expires: 2007-03-04
Abstract
Abstract An imaging device wherein a latent image is formed on a photo and pressure sensitive recording sheet by exposing a light thereon and the latent image is then developed by applying a pressure thereon. The degree of pressing is automatically and/or manually controlled so as to obtain a visible image of stable color deepness and of good quality.
Inventors
- 👤 Kenji Sakakibara
- 👤 Michitoshi Akao
- 👤 Shigeyuki Hayashi
- 👤 Jun Sakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:27
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03F; G03F7/00; G03F7/002; G03F7/0022; G03F7/0027; G03B2227/00; G03B2227/32; G03B2227/325
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
56 words
An imaging device comprising; means for exposing a light on a photo and pressure sensitive recording sheet for forming a latent image thereon; means for applying a pressure on said recording sheet for developing said latent image thereon; and means for controlling a degree of pressing applied to said recording sheet by said pressure applying means.
Claim 2
Dependent Claim
56 words
An imaging device comprising; means for exposing a light on a photo and pressure sensitive recording sheet for forming a latent image thereon; means for applying a pressure on said recording sheet for developing said latent image thereon; and means for controlling a degree of pressing applied to said recording sheet by said pressure applying means.
Claim 3
Dependent Claim
27 words
The imaging device according to claim 1 wherein said means for controlling a degree of pressing comprises means for controlling a pressure of said pressure applying means.
Claim 4
Dependent Claim
37 words
The imaging device according to claim 1 wherein said pressure applying means comprises a pair of pressing rollers, and said means for controlling a degree of pressing comprises means for controlling rotary speed of said pressing rollers.
Claim 5
Dependent Claim
47 words
The imaging device according to claim 1 which further comprises means for detecting a degree of exposure on said recording sheet, and wherein said means controlling a degree of pressing automatically controls a degree of pressing depending upon the degree of exposure detected by said detecting means.
Claim 6
Dependent Claim
22 words
The imaging device according to claim 1 wherein said means for controlling a degree of pressing is operated by manual switching means.
Claim 7
Dependent Claim
65 words
The imaging device according to claim 1 wherein said pressure applying means comprises a pair of pressing rollers, each sides of which being rotatably supported by a pair of upper and lower arms, one ends of said arms being pivoted while the other ends being relatively swingable, and means for biasing said other end of one of said arms to that of the other one.
Claim 8
Dependent Claim
61 words
The imaging device according to claim 6 wherein said biasing means comprises a compression spring mounted on a screw shaft and arranged between said one of arms and a stopper mounted on one end of said screw shaft, said screw shaft being threadably connected to said other end of arms and relatively slidably and rotatably passing through said one of arms.
Claim 9
Dependent Claim
21 words
The imaging device according to claim 7 wherein said stopper comprises a nut threaded on one end of said screw shaft.
Claim 10
Dependent Claim
33 words
The imaging device according to claim 7 wherein said means for controlling a degree of pressing comprises means for rotating said screw shaft so as to vary the compression condition of said spring.
Claim 11
Dependent Claim
38 words
The imaging device according to claim 9 wherein said rotating means comprises a driven gear secured to one end of said screw shaft and a driving gear engaged with said driven gear and rotated by a stepping motor.
Claim 12
Dependent Claim
63 words
The imaging device according to claim 1 wherein said light exposing means comprises a linear-shape light source, and said pressure applying means comprises a pair of pressing rollers, the diameter of at least one of said pressing rollers being decreased from the lateral center portion towards both end portions thereof substantially in proportion to the luminous flux distribution of said linea-shape light source.
Claim 13
Dependent Claim
40 words
The imaging device according to claim 1 wherein said light exposing means is a linear-shape light source, and said pressure applying means comprises a pair of pressing rollers and means for additionally pressing the central area of said pressing rollers.
Claim 14
Dependent Claim
68 words
An imaging device wherein a latent image is formed on a photo and pressure sensitive recording sheet by exposing a light thereon and the latent image is then developed by applying a pressure thereon with a pair of pressing rollers, the improvement which comprises in that the diameter of at least one of said pressing rollers being decreased from the lateral center portion toward both ends portions thereof.
Claim 15
Dependent Claim
68 words
An imaging device wherein a latent image is formed on a photo and pressure sensitive recording sheet by exposing a light thereon and the latent image is then developed by applying a pressure thereon with a pair of pressing rollers, the improvement which comprises in that the diameter of at least one of said pressing rollers being decreased from the lateral center portion toward both ends portions thereof.
References Cited (Backward Citations)
US4044366A
Cited
US3999202A
Cited
US4174163A
Cited
US4253757A
Cited
US4360260A
Cited
US4440846A
Cited
US4448516A
Cited
US4568167A
Cited
US4624560A
Cited
US4648699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-21 | 1991-06-22 | 1991-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-21 | 1995-06-22 | 1995-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-21 | 1999-06-22 | 1999-12-22 | $7700.00 | Window Closed / Lapsed |