Processing cartridge and electrophotographic imaging equipment
A technology for processing boxes and power supply control circuits, applied to equipment for electrical recording technology using charge patterns, electrography, and electrical recording technology using charge patterns, etc.
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Embodiment 1
[0079] Figure 11is a block diagram of the power supply control circuit in this embodiment. The power supply control circuit 5 includes a main power supply 50, a first switch circuit 51, a second switch circuit 52, a voltage boost circuit 53, a voltage drop circuit 54, a trigger device 55, a control circuit 56 and a forward / reverse drive circuit 57, the first The input end of the switch circuit 51 and the input end of the second switch circuit 52 are all connected with the main power supply 50; the output end of the first switch circuit 51 is connected with the input end of the booster circuit 53; the output end of the second switch circuit 52 is connected with the The input end of the control circuit 56 is connected; the input end of the step-down circuit 54 is connected with the output end of the booster circuit 53, and its output end is connected with the input end of the second switch circuit 52; the input end of the control circuit 56 is also connected with the trigger de...
Embodiment 2
[0082] Figure 12 is a block diagram of the power supply control circuit in this embodiment. In order to prevent when the battery power in the first embodiment is exhausted, Figure 11 The positive / reverse driving circuit 37 in the motor cannot work, and eventually the disadvantageous situation that the power receiving member 212 cannot be pulled back occurs. Compared with the first embodiment, the backup power supply 58 and the backup power switching circuit 59 are added in this embodiment.
[0083] Such as Figure 12 As shown, the main power supply 50 and the backup power supply 58 are connected through the backup power switching circuit 59, the backup power switching circuit 59 is also connected to the boost circuit 53, and the backup power supply 58 is connected to the forward / reverse drive circuit 57. In this implementation In an example, the voltage output by the backup power supply 58 is not only used to drive the forward / reverse drive circuit 57 to work, but also to ...
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