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EP0159570A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

A controlling method of a copying machine

Assignee: Kyocera Mita Industrial Co Ltd
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Filing: 1985-03-28
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Granted: —
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Expires: 2005-03-28
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Abstract

Abstract In a copying machine comprising a fusing device (5) which, by rotating a heating roller (53) and a press roller (54) in a mutually forcible contact, fuses a toner image on the copying paper (P) passing through the rollers (53) (54) and which is controlled to the wait-reset state capable of the copying operation and the wait state incapable of the copying operation in accordance with the conditions of the fusing device (5), a method for controlling the copying machine is established in such a way to set it in the wait-reset state after passing a certain fixed period of time after heating the heating roller (53) to a temperature T 3 higher than a setting temperature T 2 for fusing in the initial starting stage, and, after passing the initial starting stage, to raise the temperature from the low setting temperature T 1 in the wait state to bring it up to the setting temperature T 2 for fusing, and setting the wait-reset state even before reaching the setting temperature for fusing, but reaching it without fail when the edge of the copying paper (P) reaches the fusing device (5).

Inventors

  • 👤 Yutaka Shigemura
  • 👤 Yoshinori Makiura
  • 👤 Mitsuya Ishito

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 20:41
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2039; G03G15/205

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 188 words
In a copying machine having a fusing device (5) which, by rotating a heating roller (53) and a press roller (54) in a mutually forcible contact, fuses a toner image on the copying paper (P) passing through the two rollers (53) (54), a controlling method of the copying machine characterized in setting it to the wait-reset state capable of copying operation in the initial starting stage by passing a certain fixed period of time after heating the heating roller (53) to a certain setting temperature (T 3 ) higher than a setting temperature T 2 for fusing, and, after passing the initial starting stage, heating the fusing device (5) to a fusing tempe- rature T 2 from a setting temperature T 1 lower than the setting temperatur T 2 for fusing in the wait state mentioned above, and restoring it to the wait-reset state capable of the copying operation from the wait state for preheating after a fixed period of time shorter than the time necessary for a temperature rise by the time necessary for an edge of the copying paper (P) to reach the fusing device (5).
Claim 2
Dependent Claim 188 words
In a copying machine having a fusing device (5) which, by rotating a heating roller (53) and a press roller (54) in a mutually forcible contact, fuses a toner image on the copying paper (P) passing through the two rollers (53) (54), a controlling method of the copying machine characterized in setting it to the wait-reset state capable of copying operation in the initial starting stage by passing a certain fixed period of time after heating the heating roller (53) to a certain setting temperature (T 3 ) higher than a setting temperature T 2 for fusing, and, after passing the initial starting stage, heating the fusing device (5) to a fusing tempe- rature T 2 from a setting temperature T 1 lower than the setting temperatur T 2 for fusing in the wait state mentioned above, and restoring it to the wait-reset state capable of the copying operation from the wait state for preheating after a fixed period of time shorter than the time necessary for a temperature rise by the time necessary for an edge of the copying paper (P) to reach the fusing device (5).
Claim 3
Dependent Claim 27 words
A controlling method for the copying machine as claimed in claim 1, which starts heating a fusing device (5) by operating a key on an operation panel.

References Cited (Backward Citations)

US4144835A Cited
EP0006553A1 Cited
US4425494A Cited

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