US5659868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure roll having a flat shaft for use in a heat and pressure fuser apparatus
Assignee: Xerox Corp
•
Filing: 1995-12-11
•
Granted: 1997-08-19
•
Expires: 2015-12-11
Abstract
Abstract A heat and pressure fuser apparatus including a heated fuser roller cooperating with a pressure or back-up roller to form a nip through which substrates carrying toner images pass with the images contacting the heated fuser roll. A non-rotating pressure roll shaft is fabricated from preplated sheet stock material to provide a low cost, light-weight shaft.
Inventors
- 👤 Paul M. Fromm
- 👤 Edward C. Hanzlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:14
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/206
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
91 words
A fuser structure for fixing toner images to an image receiving surface, said structure comprising: a fuser roll; a pressure roll pressure engageable with said fuser roll; said pressure roll comprising: a core structure; an abhesive layer secured to said core structure; a plurality of bearings for operatively supporting said fuser structure in an imaging device; and a flat shaft having a substantially rectangular cross section and received in said bearings, said cross section being about 3 by 17 mm and having bearing zones which are fine blanked, coined or turned.
Claim 2
Dependent Claim
91 words
A fuser structure for fixing toner images to an image receiving surface, said structure comprising: a fuser roll; a pressure roll pressure engageable with said fuser roll; said pressure roll comprising: a core structure; an abhesive layer secured to said core structure; a plurality of bearings for operatively supporting said fuser structure in an imaging device; and a flat shaft having a substantially rectangular cross section and received in said bearings, said cross section being about 3 by 17 mm and having bearing zones which are fine blanked, coined or turned.
Claim 3
Dependent Claim
30 words
Apparatus according to claim 1 further including a pair of wedges inserted between said larger dimension of said flat shaft and said bearings for centralizing said shaft in said bearings.
Claim 4
Dependent Claim
77 words
A pressure roll structure for use in a heat and pressure roll fuser, said pressure roll comprising: a core structure; an abhesive layer secured to said core structure; a plurality of bearings for operatively supporting said fuser structure in an imaging device; and a flat shaft having a substantially rectangular cross section and received in said bearings, said cross section being about 3 by 17 mm and having bearing zones which are fine blanked, coined or turned.
Claim 5
Dependent Claim
77 words
A pressure roll structure for use in a heat and pressure roll fuser, said pressure roll comprising: a core structure; an abhesive layer secured to said core structure; a plurality of bearings for operatively supporting said fuser structure in an imaging device; and a flat shaft having a substantially rectangular cross section and received in said bearings, said cross section being about 3 by 17 mm and having bearing zones which are fine blanked, coined or turned.
Claim 6
Dependent Claim
31 words
Apparatus according to claim 3 further including a pair of wedge members inserted between the larger dimension of said flat shaft and said bearings for centralizing said shaft in said bearings.
References Cited (Backward Citations)
CA775410A
Cited
US2898662A
Cited
US4041752A
Cited
US4357743A
Cited
US4709571A
Cited
US4389114A
Cited
DK97085A
Cited
US4577747A
Cited
US4681215A
Cited
US4870731A
Cited
US4872246A
Cited
US4882922A
Cited
US4691421A
Cited
US5081759A
Cited
US5099289A
Cited
US5070366A
Cited
US5308307A
Cited
US5200786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-08-18 | 2001-02-17 | 2001-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-18 | 2005-02-17 | 2005-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-18 | 2009-02-17 | 2009-08-19 | $7700.00 | Window Closed / Lapsed |