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US3834804A Expired / Lapsed US ⏱️ 0.0 years remaining

Copying machine with means for mounting carrier bead pickoff roller therein

Assignee: Xerox Corp
•
Filing: 1972-12-06
•
Granted: 1974-09-10
•
Expires: 1992-12-06
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Abstract

Abstract An electrostatic copying machine having an endless belt mounted for movement around a closed path has a cylindrical roller rotatably mounted immediately adjacent the surface of the belt. Because it is important that the roller be capable of being removed and precisely replaced in its original position without contacting the surface of the belt, the roller is mounted so that it can be released and guided out of the machine, and then guided back into its original mounted position where it is again secured. A shaft extends through the roller, the shaft having a tapered portion on one end of the roller, the other end being supported by a removably mounted bracket. By removing the bracket, the roller is released, and can then be guided by the tapered portion into a receptacle beneath the roller. The roller and receptacle are then guided away from the belt through a trough which supports the receptacle. When replacing the roller the procedure is reversed, the brackets being precisely relocated via guide pins, thus precisely relocating the roller in its original mounted position.

Inventors

  • 👤 G Bhagat
  • 👤 G Veillard

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 18:51
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0047; G03G15/00; G03G15/06; G03G15/08; G03G15/09

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 116 words
The combination of a printing machine having means defining a photoconductive surface, with a roller, shaft means for rotatably mounting the roller at a precise location immediately adjacent to but spaced from the surface, means including a removably mounted bracket for releasably supporting the shaft means at one end of the roller, a receptacle for receiving the roller when released, means for guiding the roller into the receptacle after the bracket is removed and the roller is released, means for guiding the receptacle with the roller therein away from the surface so that the roller can be removed, and a plurality of guide pins for precisely relocating the bracket when replacing the roller in the machine.
Claim 2
Dependent Claim 116 words
The combination of a printing machine having means defining a photoconductive surface, with a roller, shaft means for rotatably mounting the roller at a precise location immediately adjacent to but spaced from the surface, means including a removably mounted bracket for releasably supporting the shaft means at one end of the roller, a receptacle for receiving the roller when released, means for guiding the roller into the receptacle after the bracket is removed and the roller is released, means for guiding the receptacle with the roller therein away from the surface so that the roller can be removed, and a plurality of guide pins for precisely relocating the bracket when replacing the roller in the machine.
Claim 3
Dependent Claim 132 words
The combination of a printing machine having means defining a photoconductive surface, with a roller, shaft means for rotatably mounting the roller at a precise location immediately adjacent to, but spaced from the surface, means including a removably mounted bracket for releasably supporting the shaft means at one end of the roller, a receptacle having a generally V-shaped cross-section for receiving the released roller, the other end of the shaft means having a tapered portion formed thereon for guiding the roller into the receptacle after the bracket is removed and the roller is released, means for guiding the receptacle with the roller therein away from the surface so that the roller can be removed, and a plurality of guide pins for precisely relocating the bracket when replacing the roller in the machine.
Claim 4
Dependent Claim 132 words
The combination of a printing machine having means defining a photoconductive surface, with a roller, shaft means for rotatably mounting the roller at a precise location immediately adjacent to, but spaced from the surface, means including a removably mounted bracket for releasably supporting the shaft means at one end of the roller, a receptacle having a generally V-shaped cross-section for receiving the released roller, the other end of the shaft means having a tapered portion formed thereon for guiding the roller into the receptacle after the bracket is removed and the roller is released, means for guiding the receptacle with the roller therein away from the surface so that the roller can be removed, and a plurality of guide pins for precisely relocating the bracket when replacing the roller in the machine.

References Cited (Backward Citations)

US3606532A Cited
US3770345A Cited
US3659311A Cited
US3647294A Cited
US3672764A Cited
US3667840A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-09-09 1978-03-11 1978-09-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-09-09 1982-03-11 1982-09-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-09-09 1986-03-11 1986-09-10 $7700.00 Window Closed / Lapsed

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