JPH01173761U

JPH01173761U -

Info

Publication number: JPH01173761U
Application number: JP7047988U
Authority: JP
Priority date: 1988-05-26
Filing date: 1988-05-26
Publication date: 1989-12-11

Description

[Brief explanation of the drawing]

第１図は本考案の安全装置の一実施例のブロツ
ク図、第２図の表１は電源ＯＮ後における入力電
圧と検知時間との対応関係を示す説明図、同表２
は待機中における入力電圧と検知時間との対応関
係説明図、表３はコピー中における入力電圧と検
知時間との対応関係説明図、第３図はフローチヤ
ートである。１０……メイン制御板、１１……温度制御板、
１２……ヒータ、１３……電圧検知部、１５……
定着ユニツト、１６……サーミスタ、１７……排
紙検知手段。 Fig. 1 is a block diagram of an embodiment of the safety device of the present invention, Table 1 of Fig. 2 is an explanatory diagram showing the correspondence between input voltage and detection time after power is turned on, and Table 2 of the same
is an explanatory diagram of the correspondence between input voltage and detection time during standby, Table 3 is an explanatory diagram of correspondence between input voltage and detection time during copying, and FIG. 3 is a flowchart. 10... Main control board, 11... Temperature control board,
12... Heater, 13... Voltage detection unit, 15...
Fixing unit, 16...Thermistor, 17... Paper discharge detection means.

補正昭６３．９．６図面の簡単な説明を次のように補正する。明細書の第８頁第１８行目の記載「第２図の表
１」を「第２図ａ」と訂正する。明細書第８頁第１９行目の記載「同表２」を「
第２図ｂ」と訂正する。明細書第９頁第１行目の記載「表３」を「第２
図ｃ」と訂正する。Amendment September 6, 1983 The brief description of the drawing is amended as follows. The statement "Table 1 in Figure 2" on page 8, line 18 of the specification is corrected to "Figure 2 a." The description on page 8, line 19 of the specification “Table 2” is changed to “
Figure 2b” is corrected. The description in the first line of page 9 of the specification “Table 3” has been changed to “Table 3” in the first line of page 9 of the specification.
Figure c” is corrected.

Claims

[Scope of utility model registration request]

In a device equipped with a fixing unit that heats and fixes an image transferred onto a transfer paper, a voltage detection means for detecting an input voltage to a heater constituting the fixing unit, and an abnormality detection time corresponding to the input voltage to the heater 1. A safety device for a fixing unit, comprising: a storage means storing a memory; and a control unit that turns off the heater when the energization time of the heater exceeds an abnormality detection time corresponding to the current voltage.