US3598487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic recording apparatus
Assignee: Toshiba Corp
•
Filing: 1969-01-14
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Granted: 1971-08-10
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Expires: 1989-01-14
Abstract
Abstract An electrostatic recording apparatus is provided with means for removing a residual toner on a recording surface carried by a movable recording medium after image transfer. The means for removal includes a wiper, a nozzle, a vessel, a circulating device and a filter. The wiper sweeps the recording surface to wipe said residual toner, and is supplied with a liquid cleaner by the nozzle. The vessel stores therein the liquid cleaner discharged from the nozzle and dispersed with the toner removed from the wiper. The toner dispersed in the liquid cleaner is removed by the filter, and then the liquid cleaner is circulated by the circulator to be discharged again from the nozzle. When the wiper is made of a liquid-absorbing soft material, there is further provided a pressing means for squeezing said wiper material containing the residual toner removed from the recording surface.
Inventors
- 👤 Mamoru Mizuguchi
- 👤 Teruo Kurihara
- 👤 Masasumi Yana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:27
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0088
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
155 words
An electrostatic recording apparatus comprising a movable electrostatic recording medium having an electrostatic recording surface, means for supplying an electrostatic latent image on said electrostatic recording surface, a developing means for supplying a toner to said electrostatic latent image, means for transferring the image developed on said electrostatic recording surface onto another material, and means for removing a residual toner present on said recording surface after image transfer, characterized in that said means for removing a residual toner comprises a wiper including a soft rotary brush sweeping said recording surface to wipe said residual toner therefrom, a nozzle for pouring a liquid cleaner on said wiper, a vessel for storing the liquid cleaner discharged from said nozzle and in which an amount of the toner deposited on said wiper is dispersed, means for circulating the liquid cleaner to supply it to said nozzle, and a filter for removing the toner dispersed in the liquid cleaner.
Claim 2
Dependent Claim
155 words
An electrostatic recording apparatus comprising a movable electrostatic recording medium having an electrostatic recording surface, means for supplying an electrostatic latent image on said electrostatic recording surface, a developing means for supplying a toner to said electrostatic latent image, means for transferring the image developed on said electrostatic recording surface onto another material, and means for removing a residual toner present on said recording surface after image transfer, characterized in that said means for removing a residual toner comprises a wiper including a soft rotary brush sweeping said recording surface to wipe said residual toner therefrom, a nozzle for pouring a liquid cleaner on said wiper, a vessel for storing the liquid cleaner discharged from said nozzle and in which an amount of the toner deposited on said wiper is dispersed, means for circulating the liquid cleaner to supply it to said nozzle, and a filter for removing the toner dispersed in the liquid cleaner.
Claim 3
Dependent Claim
31 words
An electrostatic recording apparatus as claimed in claim 1 wherein said brush includes a number of short hairy elements having unidirectional orientations on the surface thereof which sweeps said recording surface.
Claim 4
Dependent Claim
30 words
An electrostatic recording apparatus as claimed in claim 1 in which said wiper sweeps said electrostatic recording surface in a direction opposite to that of movement of said recording surface.
Claim 5
Dependent Claim
168 words
An electrostatic recording apparatus comprising a movable electrostatic recording medium having an electrostatic recording surface, means for supplying an electrostatic latent image on said electrostatic recording surface, a developing means for supplying a toner to said electrostatic latent image, means for transferring the image developed on said electrostatic recording surface onto another material, and means for removing a residual toner present on said recording surface after image transfer, characterized in that said means for removing a residual toner comprises a wiper including a liquid-absorbing soft body for sweeping said recording surface in a direction opposite to that of movement of said recording surface to wipe said residual toner therefrom, a nozzle for pouring a liquid cleaner on said wiper, a vessel for storing the liquid cleaner discharged from said nozzle and in which an amount of the toner deposited on said wiper is dispersed, means for circulating the liquid cleaner to supply it to said nozzle, and a filter for removing the toner dispersed in the liquid cleaner.
Claim 6
Dependent Claim
168 words
An electrostatic recording apparatus comprising a movable electrostatic recording medium having an electrostatic recording surface, means for supplying an electrostatic latent image on said electrostatic recording surface, a developing means for supplying a toner to said electrostatic latent image, means for transferring the image developed on said electrostatic recording surface onto another material, and means for removing a residual toner present on said recording surface after image transfer, characterized in that said means for removing a residual toner comprises a wiper including a liquid-absorbing soft body for sweeping said recording surface in a direction opposite to that of movement of said recording surface to wipe said residual toner therefrom, a nozzle for pouring a liquid cleaner on said wiper, a vessel for storing the liquid cleaner discharged from said nozzle and in which an amount of the toner deposited on said wiper is dispersed, means for circulating the liquid cleaner to supply it to said nozzle, and a filter for removing the toner dispersed in the liquid cleaner.
Claim 7
Dependent Claim
169 words
An electrostatic recording apparatus comprising a movable electrostatic recording medium having an electrostatic recording surface, means for supplying an electrostatic latent image on said electrostatic recording surface, a developing means for supplying a toner to said electrostatic latent image, means for transferring the image developed on said electrostatic recording surface onto another material, and means for removing a residual toner present on said recording surface after image transfer characterized in that said means for removing a residual toner comprises a wiper including a liquid-absorbing soft material for sweeping said recording surface to remove the residual toner therefrom, a nozzle for pouring a liquid cleaner on said wiper, a pressing means for squeezing said liquid-absorbing soft material containing the liquid cleaner discharged from said nozzle, a vessel for storing the liquid cleaner in which the toner squeezed by said pressing means is dispersed, means for circulating the liquid cleaner within said vessel to supply it to said nozzle, and a filter for removing the toner dispersed in the liquid cleaner.
Claim 8
Dependent Claim
169 words
An electrostatic recording apparatus comprising a movable electrostatic recording medium having an electrostatic recording surface, means for supplying an electrostatic latent image on said electrostatic recording surface, a developing means for supplying a toner to said electrostatic latent image, means for transferring the image developed on said electrostatic recording surface onto another material, and means for removing a residual toner present on said recording surface after image transfer characterized in that said means for removing a residual toner comprises a wiper including a liquid-absorbing soft material for sweeping said recording surface to remove the residual toner therefrom, a nozzle for pouring a liquid cleaner on said wiper, a pressing means for squeezing said liquid-absorbing soft material containing the liquid cleaner discharged from said nozzle, a vessel for storing the liquid cleaner in which the toner squeezed by said pressing means is dispersed, means for circulating the liquid cleaner within said vessel to supply it to said nozzle, and a filter for removing the toner dispersed in the liquid cleaner.
Claim 9
Dependent Claim
56 words
An electrostatic recording apparatus as claimed in claim 5 in which said wiper includes a rotatable shaft and said liquiD-absorbing soft material is disposed on the circumference of said rotatable shaft, and said pressing means includes a roller for inserting said soft material between said rotatable shaft and said roller in cooperation with the rotatable shaft.
Claim 10
Dependent Claim
46 words
An electrostatic recording apparatus as claimed in claim 5 in which said wiper includes a plurality of rollers and a liquid-absorbing beltlike soft material extending over said plurality of rollers, and said pressing means includes a pair of rollers to hold said beltlike soft material therebetween.
Claim 11
Dependent Claim
36 words
An electrostatic recording apparatus as claimed in claim 1 in which said filter includes a plurality of electrodes and porous dielectric materials each inserted between two adjacent electrodes, said electrodes being impressed by a DC voltage.
Claim 12
Dependent Claim
36 words
An electrostatic recording apparatus as claimed in claim 5 in which said filter includes a plurality of electrodes and porous dielectric materials each inserted between two adjacent electrodes, said electrodes being impressed by a DC voltage.
References Cited (Backward Citations)
US2878120A
Cited
US3128683A
Cited
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 |