← Back to Patent Explorer
US4357098A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrostatic recording apparatus

Assignee: ELECTROSTATIC RECORDING APPARATUS
•
Filing: 1980-10-03
•
Granted: 1982-11-02
•
Expires: 2000-10-03
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract An electrostatic recording apparatus comprising a cleaning device having a toner scraping member and a cleaning member. The cleaning device is movable between a position where a tip end of the toner scraping member is in contact with an image forming member and a position where the tip end of the toner scraping member is apart from the image forming member. The cleaning member is arranged on the moving path of the tip end for the toner scraping member. Toner attached on the tip end of the toner scraping member is removed when the tip end is contacted with and passed through the cleaning member.

Inventors

  • 👤 Koichi Endo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 21:09
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0011; G03G21/0029

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 275 words
An electrostatic recording apparatus comprising a cleaning device having a movable lever 11 pivotally supported at one end thereof through a shaft 10 on a housing, a plate member 13 which is moved with the lever 11 around the shaft 10, a plate member 14 connected at one end thereof through a shaft 10a with a first portion of the plate member 13, an intermediate plate member 17 pivotally connected at one end thereof through a shaft 10b with a second portion of the plate member 13, a plate member 18 pivotally supported at one end thereof through a shaft 8 by the housing 9, a shaft 18a for connecting the other end of the intermediate plate member 17 with the plate member 18, a tension spring 20, one end of which is fixed to the housing 9 and the other end of which is fixed to the shaft 18a, a toner scraping member 2 including a tip end 3 which is movable along a path between a position where the tip end 3 of the toner scraping member 2 is in contact with an image forming member 1a and a position where the tip end 3 of the toner scraping member 2 is apart from the image forming member 1a and fixed to the plate member 18, and a cleaning member 6 arranged on the path of the tip end 3 for the toner scraping member 2, the cleaning member 6 being operable to scrape off residual toner attached to the tip end 3 of the toner scraping member 2 when the tip end 3 moves along the path past the cleaning member 6.
Claim 2
Dependent Claim 275 words
An electrostatic recording apparatus comprising a cleaning device having a movable lever 11 pivotally supported at one end thereof through a shaft 10 on a housing, a plate member 13 which is moved with the lever 11 around the shaft 10, a plate member 14 connected at one end thereof through a shaft 10a with a first portion of the plate member 13, an intermediate plate member 17 pivotally connected at one end thereof through a shaft 10b with a second portion of the plate member 13, a plate member 18 pivotally supported at one end thereof through a shaft 8 by the housing 9, a shaft 18a for connecting the other end of the intermediate plate member 17 with the plate member 18, a tension spring 20, one end of which is fixed to the housing 9 and the other end of which is fixed to the shaft 18a, a toner scraping member 2 including a tip end 3 which is movable along a path between a position where the tip end 3 of the toner scraping member 2 is in contact with an image forming member 1a and a position where the tip end 3 of the toner scraping member 2 is apart from the image forming member 1a and fixed to the plate member 18, and a cleaning member 6 arranged on the path of the tip end 3 for the toner scraping member 2, the cleaning member 6 being operable to scrape off residual toner attached to the tip end 3 of the toner scraping member 2 when the tip end 3 moves along the path past the cleaning member 6.
Claim 3
Dependent Claim 78 words
An electrostatic recording apparatus according to claim 1, wherein the cleaning device further comprises a toner guide member 4 pivotally supported through a shaft 12 on the housing so that it is in contact with the image forming member, and a projecting portion 14b provided on the plate member 14 for moving the toner guide member 4 when the plate member 14 is moved so that the toner guide member 4 is apart from the image forming member.
Claim 4
Dependent Claim 26 words
An electrostatic recording apparatus according to claim 1 or 2 wherein the cleaning member can be removed from the machine frame of the electrostatic recording apparatus.
Claim 5
Dependent Claim 20 words
An electrostatic recording apparatus according to claim 1 or 2, wherein the cleaning member 6 is movable in the housing.

References Cited (Backward Citations)

US3792925A Cited
US4025180A Cited
US4218131A Cited
US4131359A Cited
US4140388A Cited
US4158498A Cited
US4218132A Cited
US4278345A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-11-01 1986-05-03 1986-11-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-11-01 1990-05-03 1990-11-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-11-01 1994-05-03 1994-11-02 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag