Patent US4435863A successfully refreshed from Google Patents.
Patent EP0047181A2 successfully refreshed from Google Patents.
EP0047181A2
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EP
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A substrate inverter
Assignee: Xerox Corp
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Filing: 1981-09-02
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Granted: —
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Expires: 2001-09-02
Abstract
Abstract A substrate inverter for a copier capable of producing simplex and duplex copies. Specifically, a tri-roll inverter (116) is described that employs a corrugation roll on roll return force applicator (76, 77) located downstream of and off line from the inout nip of the tri-roll input/output members (70,71,72). A sheet driven by the input nip into the inverter is corrugated as it penetrates the roll on roll return force applicator nip. In an alternate embodiment, a ball on roll return force applicator (79,80) is utilized wherein the roll has a minimum friction force engagement with a sheet moving in the opposite direction. When the last portion of the sheet is driven into the return force applicator nip, the friction return force of the nip will cause the sheet to buckle into an output nip of the tri-roll members for output movement.
Inventors
- 👤 George John Roller
- 👤 Leroy Allan Baldwin
- 👤 Danny Joseph Prats
- 👤 Richard Clement Schenk
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 09:17
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/625; B; B65; B65H; B65H15/00; B65H15/004; B65H2301/00; B65H2301/30; B65H2301/33; B65H2301/333; B65H2301/3332
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
130 words
A substrate inverter (116) comprising inversion channel means (73 or 90), input drive means (70, 72 or 401, 402) for driving a substrate into said channel means, and output drive means (70, 71 or 402, 403) for driving a substrate out of said channel means, characterised by nip means (76, 77 or 79, 80 or 600, 700) located within said channel means and downstream of said input drive means for applying a continuous force to the substrate in a direction opposite to the initial incoming sheet direction while the substrate is being influenced by said input means, whereby as the last portion of the substrate leaves said input means the force of said nip means will drive the substrate into said output means for movement out of said channel means.
Claim 2
Dependent Claim
130 words
A substrate inverter (116) comprising inversion channel means (73 or 90), input drive means (70, 72 or 401, 402) for driving a substrate into said channel means, and output drive means (70, 71 or 402, 403) for driving a substrate out of said channel means, characterised by nip means (76, 77 or 79, 80 or 600, 700) located within said channel means and downstream of said input drive means for applying a continuous force to the substrate in a direction opposite to the initial incoming sheet direction while the substrate is being influenced by said input means, whereby as the last portion of the substrate leaves said input means the force of said nip means will drive the substrate into said output means for movement out of said channel means.
Claim 3
Dependent Claim
23 words
An inverter according to claim 1, wherein said inversion channel means (73) includes a buckle inhibitor (89) such as a pivotally mounted ski.
Claim 4
Dependent Claim
22 words
An inverter according to claim 1 or 2, wherein said nip means comprises an idler ball (79) and a drive roller (80).
Claim 5
Dependent Claim
38 words
An inverter according to claim 3 wherein said idler ball (79) is housed within an angled channel (74) located within a support block, or is mounted on a shaft (85) and spring loaded (81) against said drive roller.
Claim 6
Dependent Claim
52 words
An inverter according to claim 1 or 2, wherein said nip means (76, 77) is provided with corrugation means (200, 300) for corrugating the substrate to increase the foam strength thereof, said corrugation means (200, 300) preferably including a pair of opposed rollers with at least one ring attached to each roller.
Claim 7
Dependent Claim
117 words
A substrate inverter mechanism (116) with feed means (70, 71, 72 or 401, 402, 403) for feeding a substrate into and out of a first end of a substrate reversing chute (73 or 90) to reverse the lead and trail edge orientation of the substrate, characterised by retard feed applicator means (76, 77 or 79, 80 or 600, 700) for receiving the substrate from said feed means and applying a retard frictional force to the substrate while the substrate is being received, whereby as the last portion of the substrate leaves said feed means coming into said reversing chute the friction force of said applicator means will cause the sheet to feed out of said reversing chute.
Claim 8
Dependent Claim
117 words
A substrate inverter mechanism (116) with feed means (70, 71, 72 or 401, 402, 403) for feeding a substrate into and out of a first end of a substrate reversing chute (73 or 90) to reverse the lead and trail edge orientation of the substrate, characterised by retard feed applicator means (76, 77 or 79, 80 or 600, 700) for receiving the substrate from said feed means and applying a retard frictional force to the substrate while the substrate is being received, whereby as the last portion of the substrate leaves said feed means coming into said reversing chute the friction force of said applicator means will cause the sheet to feed out of said reversing chute.
Claim 9
Dependent Claim
110 words
A tri-roll sheet inverter mechanism (116) having an input nip (401, 402) and an output nip (402, 403) for feeding sheets into and out of a first end of a sheet reversing chute (90) to reverse the lead and trail edge orientation of the sheets, characterised by soft drive scuffer nip means (600, 700) located at a second end of said chute (73) to receive the leading edges of the sheets directed into said reversing chute, said nip means serving to dampen the kinetic energy of the incoming sheets while simultaneously driving sheets out of the reversing chute, said scuffer nip means being located off line from said input nip.
Claim 10
Dependent Claim
110 words
A tri-roll sheet inverter mechanism (116) having an input nip (401, 402) and an output nip (402, 403) for feeding sheets into and out of a first end of a sheet reversing chute (90) to reverse the lead and trail edge orientation of the sheets, characterised by soft drive scuffer nip means (600, 700) located at a second end of said chute (73) to receive the leading edges of the sheets directed into said reversing chute, said nip means serving to dampen the kinetic energy of the incoming sheets while simultaneously driving sheets out of the reversing chute, said scuffer nip means being located off line from said input nip.
Claim 11
Dependent Claim
78 words
An inverter according to claim 7, wherein said input nip (401, 402) comprises urethane rollers (401) mounted on a first shaft for frictional contact with rubber rollers (402) mounted on a second shaft, said second shaft also including non-contacting foam rollers (404) mounted thereon adjacent said rubber rollers, said foam rollers (404) having a larger diameter than said rubber rollers (402) and adapted to allow sheets to penetrate thereinto and to deliver the sheets to said output nip.
Claim 12
Dependent Claim
30 words
An inverter according to claim 7 or 8, wherein said scuffer nip means (600, 700) is located about 10 0 above a horizontal plane through said input nip (401, 402).
Claim 13
Dependent Claim
23 words
An inverter according to claim 9, wherein said scuffer nip (600, 700) and said input nip (401, 402) are about 31 mm apart.
References Cited (Backward Citations)
No citation records indexed.
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