US4176273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light and heat writing pen for photosensitive material
Assignee: Olympus Corp
•
Filing: 1977-10-18
•
Granted: 1979-11-27
•
Expires: 1997-10-18
Abstract
Abstract A writing pen for heat developing photoconductive material including a pen having a nib formed of material of high thermal conductivity and pervious to light, for contacting photosensitive heat developing material. The pen has a light source for illuminating the photosensitive material through the pen nib contacting the material, and a heater embedded in the nib for heating the nib portion in contact with photosensitive material. The pen nib may include a light-pervious rotatable ball tip seated in a light-pervious ball receptacle.
Inventors
- 👤 Tetsuo Fujie
- 👤 Hiromi Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:47
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/83; B29C66/836; B29C65/00; B29C65/02; B29C65/18; B29C66/84; B29C66/861; B29C66/8616; B29C66/8618; B43; B43K; B43K29/00; B43K29/10; B43K8/00; B43K8/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
91 words
A writing pen for heat developing type photoconductive material comprising: a pen having a pen nib formed of material having good thermal conductivity and light-perviousness and adapted to be brought into contact with photosensitive heat developing type material; a light source in said pen for illuminating through said light pervious pen nib the photosensitive heat developing type material contacted by said pen nib; and a heater embedded in said pen nib and for heating at least a portion of said nib adapted to contact the photosensitive material to a predetermined temperature.
Claim 2
Dependent Claim
91 words
A writing pen for heat developing type photoconductive material comprising: a pen having a pen nib formed of material having good thermal conductivity and light-perviousness and adapted to be brought into contact with photosensitive heat developing type material; a light source in said pen for illuminating through said light pervious pen nib the photosensitive heat developing type material contacted by said pen nib; and a heater embedded in said pen nib and for heating at least a portion of said nib adapted to contact the photosensitive material to a predetermined temperature.
Claim 3
Dependent Claim
24 words
A writing pen as claimed in claim 1 wherein said pen nib includes a light-pervious rotatable ball tip seated in a light-pervious ball receptacle.
References Cited (Backward Citations)
US439238A
Cited
US1381194A
Cited
US1447730A
Cited
US1455842A
Cited
US1744720A
Cited
US1656690A
Cited
US1875048A
Cited
US2368839A
Cited
US2598900A
Cited
US2533955A
Cited
US3969606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |