JPS6459178A - Battery state detecting apparatus - Google Patents
Battery state detecting apparatusInfo
- Publication number
- JPS6459178A JPS6459178A JP62218249A JP21824987A JPS6459178A JP S6459178 A JPS6459178 A JP S6459178A JP 62218249 A JP62218249 A JP 62218249A JP 21824987 A JP21824987 A JP 21824987A JP S6459178 A JPS6459178 A JP S6459178A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- during
- detected
- absence
- copy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 abstract 2
- 238000004904 shortening Methods 0.000 abstract 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE:To accurately detect the charge period of a battery and to prevent the shortening of the life of the battery due to over-discharge, by changing over battery-absence detection voltage between during image forming operation and during non-operation when the charge period of a secondary battery is detected. CONSTITUTION:The inputs P0, P1 of a microcomputer 101 are connected to the output terminals of comparators 106, 107, and battery voltage and stable voltage are inputted to the input terminals of the comparators 106, 107. When an operating part 102 is pushed, the microcomputer 101 performs a copy sequence and, when both of the ports P0, P1 are a low level and the absence of a battery is detected, charge display is performed after copy is finished and, in the case of the presence of the battery, a command stand-by state is obtained. When the port P0 becomes a low level during stand-by and the absence of the battery detected, charge display is performed. As mentioned above, by changing over detection voltage between during copy and during stand-by, the over-discharge of the battery is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62218249A JPS6459178A (en) | 1987-08-31 | 1987-08-31 | Battery state detecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62218249A JPS6459178A (en) | 1987-08-31 | 1987-08-31 | Battery state detecting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6459178A true JPS6459178A (en) | 1989-03-06 |
Family
ID=16716928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62218249A Pending JPS6459178A (en) | 1987-08-31 | 1987-08-31 | Battery state detecting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6459178A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7885569B2 (en) * | 2003-12-08 | 2011-02-08 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus operable with a main and auxiliary power supply unit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6189573A (en) * | 1984-10-09 | 1986-05-07 | Nec Corp | Battery alarm circuit |
| JPS61157240A (en) * | 1984-12-28 | 1986-07-16 | キヤノン株式会社 | Forming device for picture |
-
1987
- 1987-08-31 JP JP62218249A patent/JPS6459178A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6189573A (en) * | 1984-10-09 | 1986-05-07 | Nec Corp | Battery alarm circuit |
| JPS61157240A (en) * | 1984-12-28 | 1986-07-16 | キヤノン株式会社 | Forming device for picture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7885569B2 (en) * | 2003-12-08 | 2011-02-08 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus operable with a main and auxiliary power supply unit |
| US7957663B2 (en) | 2003-12-08 | 2011-06-07 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus |
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