Zinc oxide binder plate for chargeless electrophotography
Abstract
Abstract An electrophotographic plate for chargeless electrostatic printing and the method of making the same using a photoconductive material such as microcrystalline zinc oxide and a binder of suitable type with an organic acid such as citric, oxalic or malic and mixing the ingredients and applying them to a baseplate in the desired proportions to control the sensitivity of the electrophotographic plate to light and to control the recovery of memory effect so that the electrophotographic plate can be subject to ordinary light and still be usable for reproduction by being placed in the dark for a short period of time so that the recovery of the memory effect takes place and the electrophotographic plate can then be used for reproduction thereby greatly simplifying the storage of the electrophotographic plates and also greatly simplifying the manufacture thereof. The electrophotographic plate having a smooth glossy surface thereby preventing adherence of the toner to the nonimage areas.
Inventors
- 👤 Yasuo Ueda
- 👤 Akira Takatsu
- 👤 Tatsuo Aizawa
Bibliographic Details
Claims Analysis
Total Claims: 1References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |