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US4931618A Expired / Lapsed US ⏱️ 0.0 years remaining

Image glazing device

Assignee: Sharp Corp
•
Filing: 1988-12-13
•
Granted: 1990-06-05
•
Expires: 2008-12-13
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Abstract

Abstract An image glazing device for applying a gloss to an image formed on an image receiving material is accommodated in an image forming apparatus the image glazing device being provided with at least two rollers disposed in a direction of feed of the image receiving material, an image glazing belt passed between and rotatably driven by the two rollers for applying the gloss to the image, a heater accommodated in or disposed in the vicinity of an upstream one of the two rollers for heating the image glazing belt and a paper transport guide located immediately below and along the image glazing belt for transporting the image receiving material wherein the diameter of the downstream one of the two rollers is determined in accordance with the rotating speed of the image glazing belt and the temperature of the image glazing belt at a location where the downstream roller is provided so that image offsetting will not take place. A guide member may be provided at a predetermined angle with the paper transport guide is provided in the vicinity of the downstream roller which is conducive to easy separation of the image receiving material from the image glazing belt.

Inventors

  • 👤 Syoichi Nagata
  • 👤 Kunio Ohashi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 12:36
CPC Classifications
B; B41; B41M; B41M7/00; G; G03; G03F; G03F7/00; G03F7/002; G03F7/0022; G03F7/0032; G03B; G03B2227/00; G03B2227/32; G03B2227/325

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 147 words
An image glazing device, for use in an image forming apparatus, for applying a gloss to an image formed on an image receiving material, said device comprising: at least two rollers disposed subsequent to development of an image on an image receiving material; an image glazing member passed around and rotatably driven by said two rollers for applying a gloss to said image; a heating means associated with an upstream one of said two rollers for heating said image glazing member; and a paper transport means juxtapositioned to said image glazing member for transporting said image receiving material, wherein a diameter of a downstream one of said two rollers is determined in accordance with a rotating speed of said image glazing member and a temperature of said image glazing member at a location where said downstream roller is provided so that image offsetting does not take place.
Claim 2
Dependent Claim 147 words
An image glazing device, for use in an image forming apparatus, for applying a gloss to an image formed on an image receiving material, said device comprising: at least two rollers disposed subsequent to development of an image on an image receiving material; an image glazing member passed around and rotatably driven by said two rollers for applying a gloss to said image; a heating means associated with an upstream one of said two rollers for heating said image glazing member; and a paper transport means juxtapositioned to said image glazing member for transporting said image receiving material, wherein a diameter of a downstream one of said two rollers is determined in accordance with a rotating speed of said image glazing member and a temperature of said image glazing member at a location where said downstream roller is provided so that image offsetting does not take place.
Claim 3
Dependent Claim 46 words
The image glazing device of claim 1, further including a guide member positioned after a downstream one of said two rollers for easy separation of said image receiving material from said image glazing member, said guide member forming a predetermined angle with said paper transport means.
Claim 4
Dependent Claim 24 words
The image glazing device according to claim 2, wherein said guide member forms an angle of at least 10° with said paper transport means.

References Cited (Backward Citations)

US3249738A Cited
US3997262A Cited
US3864709A Cited
US4095886A Cited
US4399209A Cited
US4616917A Cited
US4554235A Cited
US4576891A Cited
US4761311A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-06-04 1993-12-04 1994-06-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-06-04 1997-12-04 1998-06-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-06-04 2001-12-04 2002-06-05 $7700.00 Window Closed / Lapsed

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