US4737433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatographic method of making images
Assignee: Eastman Kodak Co
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Filing: 1986-11-03
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Granted: 1988-04-12
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Expires: 2006-11-03
Abstract
Abstract An electrostatographic method of forming a latent electrostatic image, developing the latent image with a toner having an average radius (r avg ) less than 5 μm, 90% of the particles having a radius of 0.8 r avg to 1.2 r avg and 99% of the toner particles having a radius of 0.5 r avg to 2 r avg , electrostatically transferring the developed image to a receiver, the surface of whch has an average peak height less than 0.3 r avg and fixing the image on the receiver.
Inventors
- 👤 Donald S. Rimai
- 👤 Arun Chowdry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
G; G03; G03G; G03G7/00; G03G7/0006; G03G7/006; G03G9/00; G03G9/08; G03G9/0819
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
122 words
An electrostatographic method of producing an image which comprises forming a latent electrostatic image on a surface, developing said latent electrostatic image with dry toner particles having an average radius (r avg ) of less than about 5 μm, wherein 90% of the particles have a radius within the range of from about 0.8 r avg to about 1.2 r avg and 99% of the toner particles have a radius within the range of from about 0.5 r avg to about 2 r avg , electrostatically transferring the developed image to a receiver, the surface of the receiver having an average peak height less than about 0.3 r avg of the toner particles and fixing said transferred toner image on said receiver.
Claim 2
Dependent Claim
122 words
An electrostatographic method of producing an image which comprises forming a latent electrostatic image on a surface, developing said latent electrostatic image with dry toner particles having an average radius (r avg ) of less than about 5 μm, wherein 90% of the particles have a radius within the range of from about 0.8 r avg to about 1.2 r avg and 99% of the toner particles have a radius within the range of from about 0.5 r avg to about 2 r avg , electrostatically transferring the developed image to a receiver, the surface of the receiver having an average peak height less than about 0.3 r avg of the toner particles and fixing said transferred toner image on said receiver.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein r avg is less than about 3.5 μm.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein r avg is from about 0.5 μm to about 3.5 μm.
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein the toner particles are substantially spherical.
Claim 6
Dependent Claim
24 words
The method of claim 1 wherein the average peak height of the receiver is less than about 0.2 r avg of the toner particles.
Claim 7
Dependent Claim
24 words
The method of claim 3 wherein the average peak height of the receiver is less than about 0.2 r avg of the toner particles.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |