US3612677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic transfer apparatus
Assignee: Xerox Corp
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Filing: 1969-06-04
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Granted: 1971-10-12
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Expires: 1989-06-04
Abstract
Abstract An electrically biased transfer drum for use as a transfer mechanism in an electrostatic reproduction machine and having gripping devices for maintaining a sheet of paper on the drum during one or multiple transfer operations and other means for effecting stripout of the sheet.
Inventors
- 👤 Michael J Langdon
- 👤 Alan F Mccarroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:20
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0105; G03G15/0131; G03G15/14; G03G15/16; G03G15/1665; G03G15/167
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
98 words
A transfer apparatus for use in a multicolor printing machine having means for producing a series of one or a plurality of transferable images of an original to be copied onto a printing member, support means for supporting a sheet of transfer material and moving the same in a recirculating path into contact with the member, said support means including means for holding the sheet thereon and releasing the same to permit removal therefrom, and means associated with the support means for controlling the releasing in accordance with a predetermined number of images of the original being produced.
Claim 2
Dependent Claim
98 words
A transfer apparatus for use in a multicolor printing machine having means for producing a series of one or a plurality of transferable images of an original to be copied onto a printing member, support means for supporting a sheet of transfer material and moving the same in a recirculating path into contact with the member, said support means including means for holding the sheet thereon and releasing the same to permit removal therefrom, and means associated with the support means for controlling the releasing in accordance with a predetermined number of images of the original being produced.
Claim 3
Dependent Claim
108 words
A transfer apparatus for use in a multicolor printing machine having means for producing a series of one or a plurality of transferable images of an original to be copied onto a printing member, support means for supporting a sheet of transfer material and moving the same in a recirculating path into contact with the member, said support means including means for gripping the transfer material for holding the same thereon and means for releasing the sheet to permit removal therefrom, and means associated with the support means for controlling activation of the releasing means in accordance with a predetermined number of images of the original being produced.
Claim 4
Dependent Claim
108 words
A transfer apparatus for use in a multicolor printing machine having means for producing a series of one or a plurality of transferable images of an original to be copied onto a printing member, support means for supporting a sheet of transfer material and moving the same in a recirculating path into contact with the member, said support means including means for gripping the transfer material for holding the same thereon and means for releasing the sheet to permit removal therefrom, and means associated with the support means for controlling activation of the releasing means in accordance with a predetermined number of images of the original being produced.
Claim 5
Dependent Claim
129 words
A transfer apparatus for use in a multicolor printing machine having means for producing a series of one or a plurality of transferable images of an original to be copied onto a printing member, support means for supporting a sheet of transfer material and moving the same in a recirculating path into contact with the member, said support means including means for registering and gripping the transfer material for holding the same thereon in one mode of operation and means for releasing the sheet to permit removal therefrom in another mode of operation, and means associated with the support means for placing said registering and gripping means in said one mode of operation in accordance with the time sequence of production of the first transferable image of the original.
Claim 6
Dependent Claim
129 words
A transfer apparatus for use in a multicolor printing machine having means for producing a series of one or a plurality of transferable images of an original to be copied onto a printing member, support means for supporting a sheet of transfer material and moving the same in a recirculating path into contact with the member, said support means including means for registering and gripping the transfer material for holding the same thereon in one mode of operation and means for releasing the sheet to permit removal therefrom in another mode of operation, and means associated with the support means for placing said registering and gripping means in said one mode of operation in accordance with the time sequence of production of the first transferable image of the original.
Claim 7
Dependent Claim
154 words
A transfer apparatus for use in a multicolor printing machine having means for producing a series of one or a plurality of transferable images of an original to be copied onto a printing member, support means for supporting a sheet of transfer material and moving the same in a recirculating path into contact with the member, said support means including means for registering and gripping the transfer material for holding tHe same thereon in one mode of operation and means for releasing the sheet to permit removal therefrom in another mode of operation, and means associated with the support means for placing said registering and gripping means in said one mode of operation in accordance with the time sequence of production of the first transferable image of the original and to place said release means in said other mode of operation in accordance with a predetermined number of images of the original being produced.
Claim 8
Dependent Claim
154 words
A transfer apparatus for use in a multicolor printing machine having means for producing a series of one or a plurality of transferable images of an original to be copied onto a printing member, support means for supporting a sheet of transfer material and moving the same in a recirculating path into contact with the member, said support means including means for registering and gripping the transfer material for holding tHe same thereon in one mode of operation and means for releasing the sheet to permit removal therefrom in another mode of operation, and means associated with the support means for placing said registering and gripping means in said one mode of operation in accordance with the time sequence of production of the first transferable image of the original and to place said release means in said other mode of operation in accordance with a predetermined number of images of the original being produced.
Claim 9
Dependent Claim
124 words
A transfer apparatus operable in a multicolor printing machine having means for producing a series of one of a plurality of transferable images of an original to be copied onto a printing member, a rotatable drum for supporting a sheet of transfer material and moving the same in a recirculating path into contact with the member, said drum including means for registering and holding the transfer material thereon, means for normally maintaining said drum out of contact with the printing means, force-generating means associated with said last-named means for overcoming its normal effect on the drum when said force means is activated, and means associated with the force-generating means for activating the same when the latter is in condition for operation in the machine.
Claim 10
Dependent Claim
124 words
A transfer apparatus operable in a multicolor printing machine having means for producing a series of one of a plurality of transferable images of an original to be copied onto a printing member, a rotatable drum for supporting a sheet of transfer material and moving the same in a recirculating path into contact with the member, said drum including means for registering and holding the transfer material thereon, means for normally maintaining said drum out of contact with the printing means, force-generating means associated with said last-named means for overcoming its normal effect on the drum when said force means is activated, and means associated with the force-generating means for activating the same when the latter is in condition for operation in the machine.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |