US5172164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image forming apparatus with microcapsules dispersed in the photoconductive member
Assignee: Alps Alpine Co Ltd
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Filing: 1990-12-04
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Granted: 1992-12-15
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Expires: 2010-12-04
Abstract
Abstract According to the present invention, an image forming apparatus uses a photoconductive member in which microcapsules with a liquid crystal material sealed therein are dispersed inside of a photoconductive layer thereof and comprises a charger for uniformly charging the photoconductive member and an LED head for forming an electrostatic latent image on the photoconductive member, and furthermore, comprises a voltage applying device for applying an alternating electric field to the photoconductive member so as to make the electrostatic latent image visible by the phase transition of the liquid crystal material, and a toner sticking device for sticking toner to the photoconductive member so as to make the electrostatic latent image visible. Therefore, it is possible to easily obtain both a display image and a printed image having high resolution.
Inventors
- 👤 Mitsugu Fujiwara
- 👤 Makoto Tomoyori
- 👤 Kazuyoshi Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:23
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/221; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1334; G02F1/135; G03G15/04; G03G15/04036; G03G15/04045; G03G15/04054; G03G5/00; G03G5/02; G03G5/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
160 words
In an image forming apparatus including a photoconductive member having a photoconductive layer arranged within a body thereof, an electrical charger for uniformly charging said photoconductive member, and an LED head for forming an electrostatic image by causing toner to adhere to said photoconductive member in response to a desired image signal, said LED head disposed adjacent to said photoconductive member, wherein the improvement comprises: microcapsules with a liquid crystal material sealed therein dispersed inside of said photoconductive layer of said photoconductive member; a voltage applying device for providing an alternating electric field to said photoconductive member so as to make a variation in phase of said liquid crystal material in said microcapsules which are dispersed in said photoconductive layer and to make said electrostatic latent image visible; and toner sticking means for selectively sticking the toner to said photoconductive member so as to make said electrostatic latent image visible, said toner sticking means mounted downstream from said LED head.
Claim 2
Dependent Claim
160 words
In an image forming apparatus including a photoconductive member having a photoconductive layer arranged within a body thereof, an electrical charger for uniformly charging said photoconductive member, and an LED head for forming an electrostatic image by causing toner to adhere to said photoconductive member in response to a desired image signal, said LED head disposed adjacent to said photoconductive member, wherein the improvement comprises: microcapsules with a liquid crystal material sealed therein dispersed inside of said photoconductive layer of said photoconductive member; a voltage applying device for providing an alternating electric field to said photoconductive member so as to make a variation in phase of said liquid crystal material in said microcapsules which are dispersed in said photoconductive layer and to make said electrostatic latent image visible; and toner sticking means for selectively sticking the toner to said photoconductive member so as to make said electrostatic latent image visible, said toner sticking means mounted downstream from said LED head.
Claim 3
Dependent Claim
31 words
An image forming apparatus according to claim 1, wherein an opening for visually confirming the image made visible by said voltage applying device therethrough is formed adjacent to said photoconductive member.
Claim 4
Dependent Claim
16 words
An image forming apparatus according to claim 1, wherein said photoconductive member is a photoconductive belt.
Claim 5
Dependent Claim
19 words
An image forming apparatus according to claim 3, wherein said LED head is disposed inside of said photoconductive belt.
Claim 6
Dependent Claim
138 words
An image forming apparatus having a display unit comprising: a body; a photoconductive member having a photoconductive layer and disposed in said body, said photoconductive layer including a plurality of microcapsules with a liquid crystal material sealed therein; a charger disposed adjacent to said photoconductive member; an LED head positioned adjacent said photoconductive member for forming an electrostatic latent image on said photoconductive member based on desired image signals; a voltage applying device positioned adjacent said photoconductive member for applying an alternating electric field to said photoconductive member; and toner sticking means for selectively sticking toner to said electrostatic latent image so as to make said electrostatic latent image visible in a hard copy, said toner sticking means mounted in said body of said apparatus; wherein said display unit is rotatably mounted in said body of said apparatus.
Claim 7
Dependent Claim
138 words
An image forming apparatus having a display unit comprising: a body; a photoconductive member having a photoconductive layer and disposed in said body, said photoconductive layer including a plurality of microcapsules with a liquid crystal material sealed therein; a charger disposed adjacent to said photoconductive member; an LED head positioned adjacent said photoconductive member for forming an electrostatic latent image on said photoconductive member based on desired image signals; a voltage applying device positioned adjacent said photoconductive member for applying an alternating electric field to said photoconductive member; and toner sticking means for selectively sticking toner to said electrostatic latent image so as to make said electrostatic latent image visible in a hard copy, said toner sticking means mounted in said body of said apparatus; wherein said display unit is rotatably mounted in said body of said apparatus.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-15 | 1996-06-15 | 1996-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-15 | 2000-06-15 | 2000-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-15 | 2004-06-15 | 2004-12-15 | $7700.00 | Window Closed / Lapsed |