Patent US4889267A successfully refreshed from Google Patents.
Patent US5260760A successfully refreshed from Google Patents.
US5260760A
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US
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Image forming apparatus with auxiliary image forming mechanism
Assignee: Kyocera Mita Industrial Co Ltd
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Filing: 1991-11-25
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Granted: 1993-11-09
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Expires: 2011-11-25
Abstract
Abstract The present invention relates to an image forming apparatus comprising a main image forming mechanism for forming a toner image on a recording sheet based on image information and an auxiliary image forming mechanism for forming an auxiliary image on a recording sheet on which the main image is formed. The auxiliary image forming mechanism supplies charged toner to a substrate provided with a plurality of toner passage holes and selectively forms electric potential which allow or does not allow the charged toner to pass through each toner passage hole by a pair of electrodes. A predetermined image is formed with the toner passed through the toner passage holes.
Inventors
- 👤 Osamu Takemura
- 👤 Eiji Nimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:32
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/23; G03G15/231; G03G15/238; G03G15/221; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00405; G03G2215/00409; G03G2215/00413; G03G2215/00789; G03G2215/00797; G03G2217/00; G03G2217/0008; G03G2217/0025
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
157 words
An image forming apparatus including a main image forming mechanism for forming a main image on a recording sheet by transferring a toner image formed on a photosensitive body based on image information onto the recording sheet and an auxiliary image forming mechanism for forming an auxiliary image on the recording sheet, wherein the auxiliary image forming mechanism comprises: an insulating substrate having a plurality of toner passage holes; a pair of electrodes which have through holes corresponding to the toner passage holes and which are disposed sandwiching the insulating substrate so that each through hole is aligned with each toner passage hole; toner supply means for supplying toner onto the electrode on one side; and image information generating means for applying predetermined potential between the pair of electrodes so that potential allowing the toner to pass through the toner passage holes in accordance with the image information is formed at least in the toner passage holes.
Claim 2
Dependent Claim
157 words
An image forming apparatus including a main image forming mechanism for forming a main image on a recording sheet by transferring a toner image formed on a photosensitive body based on image information onto the recording sheet and an auxiliary image forming mechanism for forming an auxiliary image on the recording sheet, wherein the auxiliary image forming mechanism comprises: an insulating substrate having a plurality of toner passage holes; a pair of electrodes which have through holes corresponding to the toner passage holes and which are disposed sandwiching the insulating substrate so that each through hole is aligned with each toner passage hole; toner supply means for supplying toner onto the electrode on one side; and image information generating means for applying predetermined potential between the pair of electrodes so that potential allowing the toner to pass through the toner passage holes in accordance with the image information is formed at least in the toner passage holes.
Claim 3
Dependent Claim
35 words
An image forming apparatus according to claim 1, wherein the auxiliary image forming mechanism forms the auxiliary image on the photosensitive body on which the toner image is formed by the main image forming mechanism.
Claim 4
Dependent Claim
40 words
An image forming apparatus according to claim 2, wherein the main image forming mechanism includes a developing unit for forming the toner image on the photosensitive image, and the auxiliary image forming mechanism is disposed adjacent to the developing unit.
Claim 5
Dependent Claim
39 words
An image forming apparatus according to claim 2, wherein the main image forming mechanism includes a developing unit for forming the toner image on the photosensitive body, and the auxiliary image forming mechanism is disposed in the developing unit.
Claim 6
Dependent Claim
58 words
An image forming apparatus according to claim 4, wherein the main image forming mechanism includes a cleaning unit for cleaning the photosensitive body after the toner image formed on the photosensitive body is transferred onto the recording sheet, and the toner removed from the photosensitive body by the cleaning unit is supplied to the auxiliary image forming mechanism.
Claim 7
Dependent Claim
22 words
An image forming apparatus according to claim 1, wherein the auxiliary image forming mechanism forms the auxiliary image on the recording sheet.
Claim 8
Dependent Claim
35 words
An image forming apparatus according to claim 6, wherein the auxiliary image forming mechanism is disposed facing the recording sheet transported into a position where the toner image formed on the photosensitive body is transferred.
Claim 9
Dependent Claim
39 words
An image forming apparatus according to claim 7, wherein the main image forming mechanism includes a developing unit for forming the toner image on the photosensitive body, and the auxilary image forming mechanism is disposed in the developing unit.
Claim 10
Dependent Claim
54 words
An image forming apparatus according to claim 7, wherein the main image forming mechanism includes a developing unit for forming the toner image on the photosensitive body, the developing unit includes a toner accomodation means in which the toner is accommodated, and the auxiliary image forming mechanism is disposed in the toner accomodation means.
Claim 11
Dependent Claim
32 words
An image forming apparatus according to claim 6, wherein the auxiliary image forming mechanism is disposed facing the recording sheet transported with the toner image formed on the photosensitive body transferred thereon.
Claim 12
Dependent Claim
50 words
An image forming apparatus according to claim 10, wherein the main image forming mechanism includes a cleaning unit for cleaning the photosensitive body after the toner image formed on the photosensitive body is transferred onto the recording sheet, and the auxiliary image forming mechanism is disposed in the cleaning unit.
Claim 13
Dependent Claim
45 words
An image forming apparatus according to claim 1, wherein the auxiliary image forming mechanism forms the auxiliary image on the surface of the recording sheet which is an opposite side of the surface on which the toner image formed on the photosensitive body is transferred.
Claim 14
Dependent Claim
46 words
An image forming apparatus according to claim 12, wherein the main image forming mechanism includes a transfer roller for transferring the toner image formed on the photosensitive body onto the recording sheet, and the auxiliary image forming mechanism forms the auxiliary image on the transfer roller.
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) | 1996-11-08 | 1997-05-10 | 1997-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-08 | 2001-05-10 | 2001-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-08 | 2005-05-10 | 2005-11-09 | $7700.00 | Window Closed / Lapsed |