US3765757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transport arrangement for thin sheet material
Assignee: Xerox Corp
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Filing: 1971-12-29
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Granted: 1973-10-16
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Expires: 1991-12-29
Abstract
Abstract A transport arrangement for an elongated relatively thin web or continuous sheet of material comprises a means for transporting the material in contact with an electrically conductive body formed of an electrically conductive mat and a plurality of electrically conductive contact members extending from the mat and which are secured to the mat and are in elecrical contact with the mat. The web or sheet is engaged by the conductive body at distal segments of the contact members thereby supporting and spacing the material from the mat while the material is transported. The conductive body is positioned on a transport for movement therewith and imparts motion to the web or sheet. Alternatively, the conductive body is maintained stationary and the material is drawn across the body. Through this arrangement the web or sheet is spaced from the surfaces of the transport and other support surfaces thereby advantageously resisting the adhesion of a charged web or sheet to the surface of the transport surface. Additionally, the contact between the contact members and transported material provides countercharge with relatively firm, well defined local contact thereby avoiding sparking and attendant degradation of the sheet.
Inventors
- 👤 J Weigl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:52
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6529; B; B65; B65H; B65H5/00; B65H5/02; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/58; G03B27/585; G03D; G03D5/00; G03D5/06; G03D5/067; G03G15/22; G03G15/28
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
130 words
A transport for an elongated thin sheet of material comprising: a transport body, means for supplying an elongated thin sheet of material to said transport body for advancement by said body; a transport body drive means operatively coupled to said transport body for causing motion of said transport body; an electrically conductive mat and a plurality of electrically conductive contact members secured to said mat in electrical contact therewith and extending from said mat, said mat positioned on said transport body for movemEnt with said body and for engaging said sheet at distal segments of said members thereby supporting said sheet at a spaced-apart position from said mat for inhibiting adhesion of said thin sheet to said transport body and for advancing said sheet upon motion of said transport body.
Claim 2
Dependent Claim
130 words
A transport for an elongated thin sheet of material comprising: a transport body, means for supplying an elongated thin sheet of material to said transport body for advancement by said body; a transport body drive means operatively coupled to said transport body for causing motion of said transport body; an electrically conductive mat and a plurality of electrically conductive contact members secured to said mat in electrical contact therewith and extending from said mat, said mat positioned on said transport body for movemEnt with said body and for engaging said sheet at distal segments of said members thereby supporting said sheet at a spaced-apart position from said mat for inhibiting adhesion of said thin sheet to said transport body and for advancing said sheet upon motion of said transport body.
Claim 3
Dependent Claim
16 words
The transport of claim 1 wherein said mat is secured to said body for transport therewith.
Claim 4
Dependent Claim
13 words
The transport of claim 2 wherein said transport body comprises a rotating drum.
Claim 5
Dependent Claim
14 words
The transport of claim 1 wherein said mat is arranged as an endless belt.
Claim 6
Dependent Claim
17 words
The transport of claim 1 wherein means are provided for establishing an electric charge on said sheet.
Claim 7
Dependent Claim
28 words
The transport of claim 5 wherein said means for establishing a charge on said sheet includes means for maintaining said mat and contact members at a predetermined potential.
Claim 8
Dependent Claim
23 words
The transport of claim 1 wherein said sheet comprises a dielectric material which is adapted for receiving and retaining an electric surface charge.
Claim 9
Dependent Claim
13 words
The transport of claim 1 wherein said sheet comprises an electrically conductive material.
Claim 10
Dependent Claim
129 words
An electrostatic reproduction apparatus comprising: means for establishing an electrostatic charge in image configuration on a sheet of material; means for transporting said sheet bearing said electrostatic charge to a developing station, said transporting means comprising a transport body, means operatively coupled to said body for imparting motion to said body, said body having secured thereon an electrically conductive mat and a plurality of electrically conductive contact members secured to and in electrical contact with the mat and extending from said mat for supporting and transporting said sheet near distal segments of said contact members at a spaced-apart location from said body for inhibiting adhesion of said sheet to said body and for advancing said sheet upon motion of said transport body; and, means for developing said electrostatic image.
Claim 11
Dependent Claim
129 words
An electrostatic reproduction apparatus comprising: means for establishing an electrostatic charge in image configuration on a sheet of material; means for transporting said sheet bearing said electrostatic charge to a developing station, said transporting means comprising a transport body, means operatively coupled to said body for imparting motion to said body, said body having secured thereon an electrically conductive mat and a plurality of electrically conductive contact members secured to and in electrical contact with the mat and extending from said mat for supporting and transporting said sheet near distal segments of said contact members at a spaced-apart location from said body for inhibiting adhesion of said sheet to said body and for advancing said sheet upon motion of said transport body; and, means for developing said electrostatic image.
Claim 12
Dependent Claim
158 words
In an apparatus for transporting a sheet of material between different stations in a process for operating on the sheet in order to alter the chemical or physical characteristics of the sheet, said sheet having characteristics which enhance the accummulation of an electric charge on said sheet when contacting elements of the apparatus and undesirably causing said sheet to adhere to said elements, the improvement for transporting said sheet through apparatus comprising: a transport body, means operatively coupled to said body for imparting motion to said body, and an electrically conductive mat positioned on said transport body for movement therewith and including a plurality of electrically conductive contact members secured to said mat and extending therefrom for engaging said sheet near distal segments of said members for spacing said sheet at a location apart from said body whereby an accummulation of static electric charge on said sheet is minimized and the sheet is readily separable from the transport.
Claim 13
Dependent Claim
158 words
In an apparatus for transporting a sheet of material between different stations in a process for operating on the sheet in order to alter the chemical or physical characteristics of the sheet, said sheet having characteristics which enhance the accummulation of an electric charge on said sheet when contacting elements of the apparatus and undesirably causing said sheet to adhere to said elements, the improvement for transporting said sheet through apparatus comprising: a transport body, means operatively coupled to said body for imparting motion to said body, and an electrically conductive mat positioned on said transport body for movement therewith and including a plurality of electrically conductive contact members secured to said mat and extending therefrom for engaging said sheet near distal segments of said members for spacing said sheet at a location apart from said body whereby an accummulation of static electric charge on said sheet is minimized and the sheet is readily separable from the transport.
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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |