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US4259565A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of controlling heaters for copying apparatus

Assignee: Kyocera Mita Industrial Co Ltd
•
Filing: 1979-09-05
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Granted: 1981-03-31
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Expires: 1999-09-05
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Abstract

Abstract A method of controlling dew formation preventing heaters for a copying apparatus which includes a first temperature detecting means for detecting the temperature inside the copying apparatus, with a first reference temperature (T1) being set, a second temperature detecting means for detecting the temperature inside the copying apparatus, with a second reference temperature (T2) higher than said first reference temperature (T1) being set, a humidity detecting means for detecting the humidity inside the copying apparatus, with a reference humidity (H1) being set, and a first group of heaters and a second group of heaters to be controlled by said temperature detecting means and said humidity detecting means. The method comprises the steps of: (I) Heating said first and second groups of heaters when the temperature inside the copying apparatus is lower than the reference temperature (T1) of said first temperature detecting means, and (II) heating said second group of heaters when the temperature (T) inside the copying apparatus is higher than the reference temperature (T1) of said first temperature detecting means and lower than the reference temperature (T2) of said second temperature detecting means. (II-a) with the humidity (H) inside the copying apparatus being higher than the reference humidity (H1) of said humidity detecting means.

Inventors

  • 👤 Tetsuo Ogino
  • 👤 Takashi Sengo
  • 👤 Toshio Yoshiyama

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 14:47
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/20; G03G21/203; B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/28; Y; Y10; Y10S; Y10S236/00; Y10S236/13

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 202 words
A method of controlling heaters for a copying apparatus which indicates a first temperature detecting means for detecting the temperature within the copying apparatus, with a first reference temperature (T1) being set, a second temperature detecting means for detecting the temperature within the copying apparartus, with a second reference temperature (T2) higher than said first reference temperature (T1) being set, a humidity detecting means for detecting the humidity within the copying apparatus, with a reference humidity (H1) being set, and a first group of heaters and a second group of heaters to be controlled by said temperature detecting means and said humidity detecting means, said method comprising the steps of; (I) heating said first and second groups of heaters when the temperature within the copying apparatus is lower than the reference temperature (T1) of said first temperature detecting means, and (II) heating said second group of heaters when the temperature (T) within the copying apparatus is higher than the reference temperature (T1) of said first temperature detecting means and lower than the reference temperature (T2) of said second temperature detecting means, (II-a) with the humidity (H) within the copying apparatus being higher than the reference humidity (H1) of said humidity detecting means.
Claim 2
Independent Claim 202 words
A method of controlling heaters for a copying apparatus which indicates a first temperature detecting means for detecting the temperature within the copying apparatus, with a first reference temperature (T1) being set, a second temperature detecting means for detecting the temperature within the copying apparartus, with a second reference temperature (T2) higher than said first reference temperature (T1) being set, a humidity detecting means for detecting the humidity within the copying apparatus, with a reference humidity (H1) being set, and a first group of heaters and a second group of heaters to be controlled by said temperature detecting means and said humidity detecting means, said method comprising the steps of; (I) heating said first and second groups of heaters when the temperature within the copying apparatus is lower than the reference temperature (T1) of said first temperature detecting means, and (II) heating said second group of heaters when the temperature (T) within the copying apparatus is higher than the reference temperature (T1) of said first temperature detecting means and lower than the reference temperature (T2) of said second temperature detecting means, (II-a) with the humidity (H) within the copying apparatus being higher than the reference humidity (H1) of said humidity detecting means.

References Cited (Backward Citations)

US2229612A Cited
US3167734A Cited
US3234868A Cited
US3618368A Cited
US3902040A Cited
US4172975A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-03-30 1984-09-29 1985-03-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-03-30 1988-09-29 1989-03-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-03-30 1992-09-29 1993-03-31 $7700.00 Window Closed / Lapsed

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