Method of making a sintered cadmium-containing photoconductor
Abstract
Abstract A SINTERED PHOTOCONDUCTOR IS MADE BY FIRST MIXING A PHOTOCINDUCTIVE POWDER SUCH AS CADMIUM SULFIDE, CADMIUM SELENDIE, OR CADMIUM SULFORESENIDE WITH ABOUT 10 PERCENT BY WEIGHT OF THE PHOTOCONDUCTIVE POWDER OF CADMIUM CHLORIDE POWDER. THE MIX IS ADDED TO AN AMOUNT OF GLYCERINE AOBUT ONE QUARTER TO ABOUT ONE HALF TIMES BY WEIGHT OF THE PHOTOCONDUCTIVE POWDER. THE RESULTING MIXTURE IS VIGOROUSLY STIRRED FOR ABOUT FORTY-FIVE MINUTES AT A TEMPERATURE OF ABOUT 100*C. TO 125*C. TO FORM A SLURRY. THE SLURRY IS THEN COATED ONTO A SUITABLE SUBSTRATE USING A DOCTOR BLADE TO OBTAIN A SMOOTH LAYER. THE SLURRY COATED SUBSTRATE IS THEN PLACED ON A HOT PLATE AT A TEMPERATURE FROM AOBUT 200*C. TO ABOUT 250*C. UNTIL ALL OF THE GLYCERINE HAS BEEN REMOVED. THE COATED SUBSTRATE IS THEN PLACED IN AN OVEN THAT HAS BEEN PREVIOUSLY HEATED TO ABOUT 250*C. THE OVEN TEMPERATURE IS THEN RAISED TO ABOUT 500*C. TO 550*C. WHILE A FLOW OF NITROGEN IS MAINTAINED DURING A SINTERING CYCLE OF ABOUT 20 TO 25 MINUTES.
Inventors
- 👤 Harvey A Hodes
- 👤 James Sobieski
- 👤 Michael C Zerner
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |