JPS5727268A - Safety device for copying machine - Google Patents
Safety device for copying machineInfo
- Publication number
- JPS5727268A JPS5727268A JP10258280A JP10258280A JPS5727268A JP S5727268 A JPS5727268 A JP S5727268A JP 10258280 A JP10258280 A JP 10258280A JP 10258280 A JP10258280 A JP 10258280A JP S5727268 A JPS5727268 A JP S5727268A
- Authority
- JP
- Japan
- Prior art keywords
- turns
- drum
- goes
- high voltage
- output
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0266—Arrangements for controlling the amount of charge
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0291—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices corona discharge devices, e.g. wires, pointed electrodes, means for cleaning the corona discharge device
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE:To prevent local electric discharge by logically operating control signals to a rotator driving means and a high voltage generating means or these signals and an output signal of the high voltage generating means and performing controlling such as force driving a rotator when the above-mentioned control signals do not coincide. CONSTITUTION:When a control signal V1 goes to a 0 and V2 to a 1 on account of abnormality in a control signal generating circuit 1 or a control signal branching circuit 2, that is, when a high voltage device 4 turns on in spite of nonoperation of a drum, the inputs of an NAND gate 10 are both 1s and therefore the output thereof goes to a 0, and a relay 14 turns on. Then, its control contacts 17 close, and a motor 5 turns on, by which the drum is driven. Hence, the deterioration of a photoreceptor owing to the local electric discharge by a corona discharger can be prevented. Since LEDs 12, 13 turn on at the same time, abnormality is displayed as well. In case when an output V3 goes to a 1 in spite of the 0 of the signal V2, the relay 14 turns on to drive the drum.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10258280A JPS5727268A (en) | 1980-07-25 | 1980-07-25 | Safety device for copying machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10258280A JPS5727268A (en) | 1980-07-25 | 1980-07-25 | Safety device for copying machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5727268A true JPS5727268A (en) | 1982-02-13 |
Family
ID=14331215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10258280A Pending JPS5727268A (en) | 1980-07-25 | 1980-07-25 | Safety device for copying machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5727268A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61112350U (en) * | 1984-12-26 | 1986-07-16 |
-
1980
- 1980-07-25 JP JP10258280A patent/JPS5727268A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61112350U (en) * | 1984-12-26 | 1986-07-16 | ||
JPH0440199Y2 (en) * | 1984-12-26 | 1992-09-21 |
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