Electrophotography – Control of electrophotography process – Having temperature or humidity detection
Patent
1997-10-02
1998-11-03
Lee, S.
Electrophotography
Control of electrophotography process
Having temperature or humidity detection
399 69, 399 94, G03G 1500, G03G 1520, G03G 2120
Patent
active
058323325
ABSTRACT:
In an apparatus for forming an image using a toner, a toner temperature is maintained below a protective temperature even in a high temperature environment, thereby preventing frequent operational errors caused by an excessive increase in the toner temperature. A standby mode is provided wherein, after a recording operation ends, a fixing heater for heating and fixing the toner is kept at a predetermined temperature for a predetermined period of time so that it is ready for the next recording operation. If the toner temperature exceeds the protective temperature during, for example, a recording operation when the standby mode has been selected, a mode switching control is performed to forcibly discontinue the currently set standby mode and switch to a mode wherein the fixing heater is immediately turned off after a recording operation ends. Thus, the fixing heater will be immediately turned off at the end of the next and later recording operations, thereby significantly reducing a toner temperature increase.
REFERENCES:
patent: 5321479 (1994-06-01), Yoshida et al.
patent: 5640646 (1997-06-01), Toyohara et al.
Brother Kogyo Kabushiki Kaisha
Lee S.
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