JPH0318711B2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention provides a display for appropriately controlling the display state of an operation unit in a variable magnification copying machine equipped with a variable magnification mode in order to prevent operator's erroneous operation during the variable magnification mode. Concerning improvements to control devices.

<Prior art> In a variable magnification copying machine equipped with a variable magnification mode, the optical system and drive system are generally switched depending on the type of variable magnification mode instructed by the operator, and an indicator lamp corresponding to the specified variable magnification mode is turned on. I try to let them do it. However, if the most frequently used mode is the same-size mode, when the operator changes, the operator assumes that the current mode is the same-size mode and continues copying as is (the previously set variable size mode). There is a possibility that it will happen. Conventionally, in order to prevent such erroneous operations by the operator, after a certain period of time has elapsed after copying in a specific mode, the mode is forcibly switched to the most frequently used mode, such as 1x mode, and the display lamp changes to the 1x mode indicator. I was trying to switch it up.

However, with the above devices, it is difficult to set a certain period of time for switching to a frequently used mode, and if the setting time is too short, the mode will switch automatically while the operator is changing the document. There was a possibility that erroneous copying could be made against the operator's wishes.

<Objective of the invention> The object of the invention is to display the currently set variable magnification mode after a certain period of time has elapsed, rather than forcibly switching to the most frequently used mode after a certain period of time has elapsed. The lamp is blinking to inform the operator of the current variable magnification mode and the copying operation is disabled, thereby ensuring the operator's grasp of the situation and preventing unnecessary copying. An object of the present invention is to provide a display control device for a variable magnification copying machine that can be used.

<Structure of the Invention> The present invention provides a variable magnification copying machine that includes a timer for measuring time, and detects that a variable magnification mode is selected by a mode selection switch to operate the optical system moving means and operate the optical system moving means. Reset the timer and start a new time, and if the copy switch is not operated by the time the timer has elapsed, the display lamp for the selected magnification mode among the mode display lamps will blink. , and turns off the copy enable timer, invalidates the input of the copy switch, and then, when it is detected that the mode selection switch has been operated again, operates the optical system moving means in accordance with the selected mode again. The present invention is characterized by comprising a control means that resets the timer and starts a new timekeeping, and enables the input of the copying switch until the timer has elapsed for a certain period of time.

<Embodiment> FIG. 1 is a block diagram of a display control device which is an embodiment of the present invention. Further, FIG. 2 is a flowchart showing the operation of the display control device.

In FIG. 1, reference numeral 1 denotes a control CPU, to which a group of mode changeover switches 2 is connected via an input port (not shown). Mode change switch group 2
is composed of a same magnification mode selection switch and four types of variable magnification mode selection switches, and the control CPU 1 sets the mode corresponding to the switch operated by the above-mentioned five types of selection switches in total. Further, a signal when the copying switch 3 is operated is inputted to the CPU 1 via a gate 4. Signals a to f are outputted from the CPU 1 to the outside via output ports (not shown), and the signals a to f are input to the AND gate 9, respectively, and the signal f is input to the AND gates 4 and 9 and the OR gate 10.
Enter. The OR gate 10 further receives the output of the variable magnification blinking oscillator 11, and provides an oscillation output to the AND gates 6 to 8 when the signal f is low. When the variable magnification mode is set by the CPU 1, the signals a to d become high according to the variable magnification mode. Further, the signal e becomes high when the copying is possible. The signal f is normally high, but
When the copying switch 3 is not operated for a certain period of time after the variable magnification mode is selected, it falls to low level, closes the gates 4 and 9, and allows the oscillation output of the oscillator 11 to be given to the gates 5 to 8.
The outputs of AND gates 5 to 9 are outputted to variable magnification mode indicator lamp 13 via lamp driver array 12, and the output of AND gate 9 is outputted to copyable indicator lamp 14 via lamp driver array 12.

Next, the operation of the display control device having the above configuration will be explained with reference to the flowchart of FIG.

After turning on the power, step n1 (hereinafter referred to as step ni)
is simply called ni. ) performs initialization processing such as resetting the timer T and flag F provided in the CPU 1 and setting the control signal f to high. Subsequently, in n2, the operating state of the switches in mode changeover switch group 2 is determined;
If none of the five types of switches is operated, the process advances to n3. At n3, the time measured by the timer T and a predetermined constant time t0 are compared. Since the timer T has been reset at n1, the sequence initially progresses from n3 to n4. At step n4, the signal e is turned on in order to turn on the copy-ready indicator lamp 14. And gate 9 after finishing n4
opens, and the copy-ready indicator lamp 14 lights up. Next, at n5, it is determined whether the copy switch 3 is operated, and if it is not operated, it is determined whether the current mode is the variable magnification mode (n5).
6), and further determines whether flag F is set (n7), and if the magnification mode is not set or flag F is set, n is set again.
Return to 2. When the zoom mode is in effect and the flag F is in the reset state, the flag F is set (n8) and the timer T is started (n8).
9) Return to n2. Incidentally, the variable magnification mode is set when any of the four types of variable magnification mode switches in the mode changeover switch group 2 is operated. Therefore, when the mode changeover switch is not operated after the power is turned on, the routine from n2 to n6 is repeated because the zoom mode is not in effect.

When one of the mode changeover switches is operated, the process progresses from n2 to n10, resets both the timer T and flag F, and adjusts the drive system and optical system corresponding to the mode set in n10 and n11 (n12). ). Furthermore, if the setting mode is the variable magnification mode, the process proceeds to step 3, where any of the variable magnification mode display lamp signals a to d corresponding to the set switch is turned on (high). When the mode changeover switch is operated in this way, the drive system and optical system are adjusted and then n3→n4→...→n2
→... However, if the operated switch is the variable magnification mode setting switch, the process proceeds as n6 → n7 → n8, sets flag F (n8), and drives timer T (n9). . After starting the timer T, if the copying switch 3 is operated when the measured time is less than time t0, the copying process proceeds from n5 to n14 and the copying process is executed, and the timer T and flag F are reset again. te n15,
n16 Return to the original n2. However, timer T is n
9, if the copying switch 3 is not operated for a long time, the time measured by the timer T exceeds a certain time t0 and progresses from n3 to n18. In this case, the signal e for lighting the copyable display lamp 14 is turned off (n18), and the control signal f is turned on (n19), and the process returns to n2. As a result, the oscillation output of the variable magnification and blinking display oscillator 11 is guided to the input side of ANDs 5 to 8, causing any of the variable magnification mode lamp display lamps LA to LR that are lit at that time to be in a blinking state. At the same time, the AND gate 9 is closed and the copy ready indicator lamp 14 is turned off. Further, by also closing the AND gate 4, the operation of the copying switch 3 is invalidated. When the variable magnification mode setting switch is operated as described above, timer T is started, and if the copy switch is not operated within a certain period of time, the variable magnification mode indicator lamp that has been set is flashed and the copy ready indicator lamp is flashed. It is possible to turn off the light and disable the operation of the copying switch 3. The blinking display calls the operator's attention, and by blinking the variable magnification mode display lamp, it is possible to reliably inform the operator of the currently set mode. If the operator desires to copy in another mode at this stage, he does not need to operate the copying switch 3, but only operates the desired mode setting switch and then operating the copying switch 3. At this time, even if the copy switch 3 is operated by mistake, the operation will be invalid because the AND gate 4 is closed.
Miscopy can be prevented.

Note that when the mode set in n2 is the same magnification mode, the timer T is not activated because the process progresses unconditionally from n6 to n2. Therefore, the timer T is reset and does not advance from n3 to n18, and the copy-ready indicator lamp 14 always remains lit. In the case of the 1x mode, such time regulation is not performed because the 1x mode is the most frequently used mode.

<Effects of the Invention> As described above, according to the present invention, if the copy switch is not operated within a certain period of time after selecting the variable magnification mode, the variable magnification mode display lamp set at that time blinks. At the same time, the copy operation is disabled, so even if the time between the previous copy operation and the current copy operation by the same operator is long, the display blinks to alert the operator. It is possible to prevent copy mistakes due to misunderstandings. In addition, if the previous operator attempts to operate after a certain period of time has elapsed after finishing copying while the previous operator was in variable magnification mode, the variable magnification mode display lamp set previously will be blinking, so the next operator will At that point, the desired mode can be set correctly, and even if the blinking display is missed, the copying operation is disabled, so it is possible to prevent erroneous copying. Therefore, even if the same operator performs the operation or a different operator from the previous operation performs the operation, it is possible to effectively prevent the occurrence of copy mistakes.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a display control device for a variable magnification copying machine according to an embodiment of the present invention, and FIG. 2 is a flowchart showing the operation of the display control device. 3... Copying switch, 13... Lamp for variable magnification mode, 14... Copying possible indicator lamp.

Claims (1)

[Claims of Claims] 1. A copying switch that starts a copying operation, a copying lamp that displays when copying is possible, a mode selection switch that selects each mode of the same magnification mode and variable magnification mode, and displays the selected mode. In a variable magnification copying machine equipped with a mode display lamp for displaying a mode, and a moving means for moving an optical system in accordance with the selected mode, a timer for measuring time and a mode selection switch are used to indicate that a variable magnification mode has been selected. When the copying switch is not operated by the time when the timer has elapsed for a certain period of time, one of the mode display lamps is activated. The display lamp of the selected variable magnification mode blinks, the copy enable lamp is turned off, the input of the copy switch is invalidated, and then, when it is detected that the mode selection switch has been operated again, the mode selection switch is selected again. control that operates the optical system moving means in accordance with the selected mode, resets the clocking of the timer to start counting anew, and enables the input of the copying switch until the timer clocking has elapsed for a certain period of time; 1. A display control device for a variable magnification copying machine, comprising: means.