Photocopying – Contact printing – Light boxes
Patent
1990-08-21
1991-08-13
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355285, G03G 2100, G03G 1520
Patent
active
050400223
ABSTRACT:
Disclosed is a fixing apparatus wherein a print medium having an image transferred thereto is conveyed by rollers provided with a heat source, whereby the transferred image is fixed to the print medium. At least one of the fixing rollers has a hollow section in which the heat source is disposed toward the side at which the print medium is held and upstream with regard to the direction of rotation of the roller. The fixing apparatus comprises a detector for detecting the temperature at or in the vicinity of the heat source; an operating circuit for operating the heat source when the detected temperature is lower than a required temperature; a device for notifying an operator that the temperature of the fixing apparatus has reached a temperature required for the fixing operation; and a timer which starts to count from the start of operation of the heat source. When the required temperature is reached, the timer is reset, and when operation of the heat source is restarted, the timer starts to count again. The notification by the notifying device is continued regardless of the temperature, and is stopped when the count of the timer reaches a predetermined value.
REFERENCES:
patent: 3452181 (1969-06-01), Stryjewski
patent: 4163892 (1979-08-01), Komatsu et al.
patent: 4549803 (1985-10-01), Ohno et al.
patent: 4603245 (1986-06-01), Yagasaki
patent: 4745436 (1988-05-01), Matsuura
patent: 4897696 (1990-01-01), Matsumoto
patent: 4952781 (1990-08-01), Kozaiku
Hasegawa Makoto
Kashima Hiroyuki
Kinoshita Naohisa
Muto Kiyoshi
Tsuzuki Toshihiro
Brother Kogyo Kabushiki Kaisha
Grimley A. T.
Ramirez Nestor R.
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