Patent US5359400A successfully refreshed from Google Patents.
US5359400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image forming apparatus
Assignee: Canon Inc
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Filing: 1992-12-10
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Granted: 1994-10-25
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Expires: 2012-12-10
Abstract
Abstract The present invention provides an image forming apparatus with a sheet supply cassette which can contain a plurality of recording members and can be removably mounted within the image forming apparatus, an image forming device for forming an image on the recording member with toner to form a toner image, fixing rollers having a heater for thermally fixing the toner image on the recording member, remaining amount detecter means for detecting the remaining amount of the recording members in the sheet supply cassette or/and a remaining amount of the toner and generating a detection signal, and energization stopping control for stopping the energization of the heater on the basis of the detection signal.
Inventors
- 👤 Toshiyuki Itoh
- 👤 Junichi Kimizuka
- 👤 Takeji Gima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:54
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G2215/00; G03G2215/00362; G03G2215/00535; G03G2215/00717; G03G2215/00729
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
99 words
An image forming apparatus comprising: a sheet supply cassette for holding a plurality of recording members therein, said cassette removably mounted within the image forming apparatus; image forming means for forming a non-fixed image on the recording member supplied from said sheet supply cassette; fixing means having a heater for thermally fixing the non-fixed image on the recording member; remaining amount detection means for detecting a remaining amount of recording members in said sheet supply cassette; and energization stopping means for stopping energization of said heater on the basis of a detection signal from said remaining amount detection means.
Claim 2
Dependent Claim
99 words
An image forming apparatus comprising: a sheet supply cassette for holding a plurality of recording members therein, said cassette removably mounted within the image forming apparatus; image forming means for forming a non-fixed image on the recording member supplied from said sheet supply cassette; fixing means having a heater for thermally fixing the non-fixed image on the recording member; remaining amount detection means for detecting a remaining amount of recording members in said sheet supply cassette; and energization stopping means for stopping energization of said heater on the basis of a detection signal from said remaining amount detection means.
Claim 3
Dependent Claim
25 words
An image forming apparatus according to claim 1, wherein said remaining amount detection means detects absence of the recording member in said sheet supply cassette.
Claim 4
Dependent Claim
15 words
An image forming apparatus according to claim 1, wherein said heater is a halogen heater.
Claim 5
Dependent Claim
63 words
An image forming apparatus, comprising: image forming means for forming a toner image on a recording member; fixing means having a heater for thermally fixing the image on the recording member; remaining amount detection means for detecting a remaining amount of toner; and energization stopping means for stopping energization of said heater based on a detection signal from said remaining amount detection means.
Claim 6
Dependent Claim
63 words
An image forming apparatus, comprising: image forming means for forming a toner image on a recording member; fixing means having a heater for thermally fixing the image on the recording member; remaining amount detection means for detecting a remaining amount of toner; and energization stopping means for stopping energization of said heater based on a detection signal from said remaining amount detection means.
Claim 7
Dependent Claim
38 words
An image forming apparatus according to claim 4, wherein said image .forming means has a containing portion for containing the toner, and wherein said remaining amount detection means detects remaining amount of the toner in said containing portion.
Claim 8
Dependent Claim
45 words
An image forming apparatus according to claim 5, wherein said image forming means has an image bearing member for bearing a latent image and a developing device for developing the latent image with toner, and wherein said containing portion is provided in said developing device.
Claim 9
Dependent Claim
15 words
An image forming apparatus according to claim 4, wherein said heater is a halogen heater.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-24 | 1998-04-25 | 1998-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-24 | 2002-04-25 | 2002-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-24 | 2006-04-25 | 2006-10-25 | $7700.00 | Window Closed / Lapsed |