JPH0630000B2 - Copier - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a copying machine having a reserved power-off function for turning off the power of the copying machine at a preset time zone for saving power.

2. Description of the Related Art In a conventional copying machine, the power of the copying machine is automatically turned off for a certain period of time from a preset time, thereby eliminating wasteful power consumption when copying is not performed, for example, after working hours are over. There is something like this.

However, in this type of conventional copying machine, when copying is performed while the power is off during the set time period, the timer that measures the power off time is reset once and the power is turned on. After that, it was necessary to perform a complicated operation of copying the image, turning off the power and resetting the timer when the copying was completed. In addition, if the user forgets to turn off the power after finishing copying, the power may be turned on and off.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a copying machine that simplifies the copying operation during a preset power-off time.

The copying machine according to the present invention includes a numerical value input key for inputting the number of copies, and a mode changing means for changing a stop time at which the power of the copying machine is automatically turned off to a mode in which the numerical input key is set. A power-off control means for automatically turning off the power supply at the stop time set by the mode changing means and the numerical value input key, and a manual power-supply operation regardless of whether the power supply is turned off by the power-off control means. In the copying machine having a power-on means for turning on the power, the power-off control means sets the set stop when a certain time elapses after the copying operation, the copying preparation operation, or the key input operation to the copying machine is completed. It is characterized in that the power is automatically turned off again only in the stop time zone between the time and the predetermined time.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of an electrophotographic copying machine according to the present invention. A photoconductor drum 1, which can be driven to rotate in a counterclockwise direction, is arranged in a substantially central portion of the main body of the copying machine, and a main eraser lamp 2, a sub-charger 3, a sub-eraser lamp 4, and a main charger 5 are arranged around the photoconductor drum 1. A developing device 6, a transfer charger 7, a copying paper separation charger 8, and a blade type cleaning device 9 are provided. The photoconductor drum 1 is provided with a photoconductor layer on its surface, and the photoconductor is sensitized and charged by passing through the eraser lamps 2 and 4 and the chargers 3 and 5, and is subjected to image exposure from the optical system 10. .

The optical system 10 is installed below the original glass 16 so that the original image can be scanned, and includes a light source (not shown) and a movable mirror 1.
1, 12, 13, a lens 14, and a mirror 15. The light source and the movable mirror 11 move leftward at a speed of v / n (where n is a copying magnification) with respect to the peripheral speed v of the photosensitive drum 1 (constant regardless of equal magnification or variable magnification).
The movable mirrors 12 and 13 are driven by the scan motor M3 so as to move leftward at a speed of v / 2n. When changing the copy magnification, the lens 14 moves along the optical axis and the mirror 15 moves and swings, but such a magnification changing device is well known and will not be described in detail.

On the other hand, an upper sheet feeding section 20 and a lower sheet feeding section 22 are installed on the left side of the main body of the copying machine, and the conveyance path of the copying machine has roller pairs 24, 2
5, a timing roller pair 26, a conveyor belt 27, a fixing device 28, and a discharge roller pair 29.

FIG. 2 shows the layout of the operation keys on the operation panel of the copying machine. The operation panel 70 includes a print key 71 and a 7-segment LED for starting a copying operation.
And a numerical display device 72 that is capable of displaying 4-digit numerical values,
Numeric keys 80 to 89 corresponding to numerical values of 1, 2, ..., 9, 0 respectively, an interrupt key 90 for designating interrupt copying, a clear / stop key 91, and copy papers in a multi-stage mounted paper cassette depending on size. A designated paper selection key 92, up and down keys 93 and 94 for stepwise changing and designating the copy image density, and copy magnification setting key groups 100 to 103 are arranged. Copy magnifications corresponding to the magnification setting keys 100, 101, 102, and 103 are stored in advance in a storage device, which will be described later. By operating the keys 100 to 103, the stored copy magnifications are stored. The copy operation is executed.

Reference numeral 95 is a power-off time setting key for setting a time zone in which the power of the copying machine is turned off. When setting the power-off time zone, first, the power-off time setting key 95
After pressing, input the time data with the numeric keys 80 to 89. When the power off time setting key 95 is pressed again, this time data is stored. Reference numeral 96 denotes a cancel key for canceling the power-off state during this set time period.

FIG. 3 shows a control circuit used in the copying machine according to the present invention, in which 201 is a first CPU and 202 is a second CPU, 20.
3 is a battery-backed RAM, 204 is a switch matrix formed by keys on the operation panel, 2
Reference numeral 05 is a drive circuit of a DC motor M3 for scanning the original, 206
Is a drive circuit of the stepping motor M4 for zooming, 207
Is a decoder. The output terminals A1 to A7 are transistors (not shown) for switching drive of the main motor M1, the developing motor M2, the timing roller clutch CL1, the upper sheet feeding clutch CL2, the lower sheet feeding clutch CL3, the charger 5, and the transfer charger 7, respectively. The output terminal A8 is connected to a power supply circuit (not shown) of the copying machine. A signal for turning off the power of the copying machine is output to the output terminal A8 during the power-off time period.

Various data for controlling the copying operation is written in the RAM 203 or is shifted and stored from the ROM in the CPU, and the selection keys 100 to 103 are also stored.
Corresponding to the storage unit Q1, Q2, Q3, Q4, for example, when the selection key 100 is turned on, the storage unit Q
1 is read out, and when the selection key 101 is turned on, the storage section Q2 is read out. In addition, RAM2
03 stores the time data of the set power-off time zone.

Reference numeral 208 denotes a timepiece IC, which is backed up by a battery and once the time is set, the time is set thereafter. The timepiece IC 208 is connected to the first CPU 201 via a data bus, and the first CPU 201 inputs time data from the timepiece IC 208.

4 to 10 show a procedure of processing executed by the first CPU 201.

FIG. 4 schematically shows the overall configuration of the processing of the first CPU 201. When the program starts, first in step S1, a subroutine for initializing the CPU and the copying machine is executed. In this initial setting subroutine, as shown in FIG. 5, the number of copies is set to 1, the sheet feed port is set to upper feed, and the copy magnification is set to the same size. In step S2, the internal timer of the first CPU 201 is set, and then in step S3, data of various detection switches (not shown) inside the copying machine is input. Then, in step S4, it is determined whether or not the copying operation is in progress. If the copying operation is not in progress, the temperature adjustment routine, the operation processing routine and the time setting routine are executed in steps S5, S6 and S7. For details of the temperature control routine, the operation processing routine, and the time setting routine, see FIGS.
Figure 8 and Figure 8 respectively.

In step S8, the auto reset timer is judged. The auto reset timer counts the above-mentioned time when the setting data is changed to the initial setting data when the operation unit of the copying machine is not operated for a predetermined time. When the auto-reset timer times out, the initialization routine is executed in step S9, and then the copy prohibition flag is determined in step S10. If the copy prohibition flag is "0", the copy operation control routine is executed in step S11. After that, the automatic power-off routine is executed in step S12. Details of the copying operation control routine and the automatic power-off routine are shown in FIGS. 9 and 10, respectively. Then, in step S13, one routine is ended after waiting for the end of the internal timer.

FIG. 6 shows a temperature control routine. In step S31, it is determined whether or not the fixing device 28 (FIG. 1) has risen to the set temperature. If the temperature has not risen, the copy prohibit flag is set in step S32. Is set to "1" and the temperature is raised, the copy prohibition flag is set to "0" in step S33, and the auto reset timer is set in step S34.

FIG. 7 shows the operation processing routine, and step S4
In step 1, it is determined whether or not the key on the operation panel 70 is turned on. When the key is turned on, the operation flag is set to "1" in step S42. If the key is not turned on, the operation flag is set in step S43. While setting to 0 ",
In step S44, the auto reset timer is set.

FIG. 8 shows a time setting routine. Step S
At 51, the on-edge of the power-off time setting key 95 (FIG. 2) is determined. When the key 95 is pressed to determine the on-edge, the power-off time setting flag is determined at step S52 to set the power-off time. If the flag is "0", the time will be set from now on. Therefore, the power-off time setting flag is set to "1" in step S53, and the 7-segment LED display of the numerical display device 72 is displayed in step S54. Leave blank. In addition, step S52
If it is determined that the power-off time setting flag is "1", it means that the time setting has already been completed, so the power-off time setting flag is set to "0" in step S55, and step S56. The data of the time displayed on the numerical display device 72 is stored in the memory of the RAM 203 (FIG. 3). Then, in step S57, the numerical display device 72
Is returned to the display of the number of copies and 1 is displayed. Next, in step S58, it is determined whether or not the ten keys 80 to 89 (FIG. 2) are input. If the ten keys 80 to 89 are input, the power off time setting flag is determined in step S59, and this If the power-off time setting flag is not "0", the data of the power-off time keyed in step S61 is displayed on the numerical display device 72, and if the power-off time setting flag is "0", In step S60, the data of the number of copies keyed in is set.

The flowchart of FIG. 9 shows a copying operation control routine for controlling the copying operation of the copying machine, and the timing chart of FIG. 11 shows the operating state of the essential parts of the copying machine.

In the block 10, when the print key 71 is turned on, the main motor M1 for driving the photosensitive drum 1, the developing motor M2 for driving the developing device 6, the charging chargers 3 and 5, and the transfer charger 7 are activated, and The copy flag, which means that the copying operation is in progress, is set to "1", and the control timers T-A and T-
B is started, and the clutch of the paper feeding roller of the paper feeding unit selected from the upper paper feeding unit and the lower paper feeding unit is turned on.

In block 11, it is determined that the timer TA has ended and the paper feed clutch is turned off.

In block 12, it is determined whether the timer TB is finished,
The scan motor M3 that drives the scan optical system 10 is turned on to start the scan operation.

In block 13, when a timing switch (not shown) is actuated during the scanning operation to output a timing signal, the clutch of the timing roller 26 is turned on and the process of setting the timer TC is executed. The copying paper is conveyed by the timing roller 26 in synchronization with the image on the photosensitive drum 1.

In block 14, it is determined that the timer TC has ended, and the charging charger, scan motor, and timing roller clutch are turned off. In addition, timer T-
C may be variably set according to the size of copy paper used.

In block 15, when the optical system returns to the fixed position and the fixed position switch (not shown) is turned on in accordance with the return operation, the developing motor and the transfer charger are turned off, and the copy flag is set to "0". , Timer T-
The process of setting D is executed.

In block 16, it is determined that the timer T-D has ended, and the main motor is turned off. Block 17 performs processing for various outputs.

Note that the timers T-A to T-D, etc. described in the above flow charts and timing charts are programmed to count up to "1" in one routine of the processing executed within the time defined by the internal timer. It is a digital timer that is operated and the type-up time is stored as numerical data.

FIG. 10 shows an automatic power-off routine. In step S71, it is determined whether or not the cancel key 96 (FIG. 2) is turned on. When the cancel key 96 is off, it is determined in step S72 whether or not the current time is in the power-off set time zone. If the time is in the power-off set time zone, the copy prohibition flag in steps S73 to S76 is "0", that is, the temperature of the fixing device 28 has been raised, and the operation flag is "0", that is, the operation panel 70.
Key operation is not performed, main motor M1
Is OFF, that is, the copying operation is not in progress, and if the auto-reset timer is not counting, the power-off signal is output in step S78. Although the above conditions are satisfied, if it is determined in step S76 that the auto reset timer is counting, the completion of counting of the auto reset timer is waited in step S77, and the power off signal is output in step S78. To do.

That is, in this control, if the power-off set time is during the temperature rise of the fixing device 28 or the key operation or the copying operation is being performed on the operation panel 70 of the copying machine, the power is not immediately turned off. After those operations are completed, the power is automatically turned off after waiting the count of the auto reset timer. If the temperature of the fixing device 28 is not being raised, the key operation of the operation panel 70 is not being performed, and the copying operation is not being performed at the set time of power-off, the power is immediately turned off. further,
When copying is performed by manually turning on the power during the power-off set time period, when copying is completed, the power is automatically turned off after waiting for the auto reset timer to finish counting. When the cancel key 96 is pressed during the power-off set time period, the power-off function is canceled.

In the flowchart of FIG. 10, the end time of the power-off set time zone is set to 24:00, but this can be arbitrarily changed.

Effect As described above, according to the present invention, even if the power of the copying machine is automatically turned off by the timer in the time zone set in advance by the numeric keypad or the like, the power is manually turned on. Since the copying machine can be used and the power of the copying machine is automatically turned off again after a certain time after the operation of the copying machine or the specific operation of the copying machine is completed, it is possible to prevent forgetting to turn off the power supply.

Further, since the copying machine according to the present invention can use the numerical value input key for inputting the number of copies also for setting the stop time zone, it is necessary to provide another input means for setting the stop time zone. This simplifies the structure of the device and helps reduce the cost of the device.

[Brief description of drawings]

FIG. 1 is a layout diagram showing a schematic configuration of a copying machine according to the present invention,
FIG. 2 is a plan view showing the configuration of the operation panel of the copying machine, and FIG.
FIG. 4 is a block diagram showing the configuration of the control device of the copying machine, FIGS. 4 to 10 are flowcharts showing the processing procedure executed by the first CPU, and FIG. 11 is a timing chart showing the operating state of the main parts of the copying machine. Is. 80 to 89 ... Numeric keypad, 95 ... Power off time setting key,
201 ... First CPU, 208 ... Clock IC.

Continuation of the front page (56) Reference JP-A-58-221854 (JP, A) JP-A-57-168262 (JP, A) JP-A-58-203461 (JP, A) JP-A-58-203463 (JP , A) JP 58-203459 (JP, A) JP 58-203460 (JP, A) JP 58-14847 (JP, A) Actual development 60-16148 (JP, U) Actual development 57-82340 (JP, U) Actual Development Sho 59-109350 (JP, U) Japanese Patent Sho 60-49901 (JP, B2) Japanese Patent Hei 4-3546 (JP, B2) Japanese Official Hei 3-14671 (JP, Y2)

Claims (1)

[Claims] 1. A numerical value input key for inputting the number of copies, a mode changing means for changing to a mode in which the stop time for automatically turning off the power of the copying machine is set by the numerical input key, and this mode changing means. And a power-off control means for automatically turning off the power at the stop time set by the numerical value input key, and a power supply for manually turning on the power regardless of whether the power is turned off by the power-off control means In the copying machine provided with an on-means, the power-off control means is configured such that the preset stop time and the predetermined time are a time point at which a predetermined time has elapsed after the copying operation, the copying preparation operation, or the key input operation to the copying machine is completed. A copying machine characterized in that the power is automatically turned off again only when it is during a stop time between.