JPS6410831B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an image processing apparatus such as a copying machine.

2. Description of the Related Art Conventionally, in an image processing apparatus such as a copying machine, the magnification of an image is changed by driving a lens or the like to a constant magnification position or a variable magnification position using a drive system in response to a magnification instruction by a key operation on an operation unit. By the way, there are cases where the operator, after having instructed the first magnification using the operation section, realizes that the first magnification is incorrect and instructs the second magnification in order to correct the first magnification. After instructing the first magnification, there are cases where the user changes his mind and instructs the second magnification. Copying machines capable of variable magnification often do this kind of thing, especially high-performance copying machines with many magnifications. However, conventionally, once the drive system starts changing the magnification based on an instruction from the operating section, it does not accept the next instruction on the magnification from the operating section during the switching of the magnification.
Therefore, the magnification cannot be instructed until the drive system stops, resulting in extremely poor operability.

An object of the present invention is to improve this drawback and provide an image processing device with good operability.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. To explain the case where the variable magnification key is operated while the optical system such as a lens or mirror is being driven to the same magnification position in a copying machine, flip-flops FF1 and FF2 are activated when the optical system is being driven to the same magnification position. It is set. Then, the output of the flip-flop FF1 is applied to the base of the transistor Q1 via the buffer A1, and the transistor Q1 is turned on to light the equal-magnification display lamp L1. At the same time, the output of flip-flop FF2 is applied to the base of transistor Q2 via buffer A2, turning it on and exciting relay RA1.
Therefore, the magnification switching drive motor M is a relay RA.
When the normally open contact RA1-a1 of No. 1 closes, the optical system rotates in the normal direction and drives the optical system to the same magnification position. When the variable magnification key is operated to instruct magnification, the signal from this variable magnification key is sent to the flip-flop FF1.
is reset, and the same magnification display lamp L1 goes out.
At the same time, the signal from the variable magnification key passes through the AND gate G1 by the output of the inverter 1N1 and sets the flip-flop FF3, and the output of the flip-flop FF3 is applied to the base of the transistor Q3 via the buffer A3, turning on the variable magnification display lamp L.
Turn on 2. In other words, the magnification display lamps L1 and L2 are switched at the time the key is operated. However, since the flip-flop FF2 maintains its set state, the magnification drive motor M continues to rotate normally. When the optical system reaches the predetermined position at 1:1 magnification,
The same magnification position sensor S1 detects this and turns on, resetting the flip-flop FF2. That is, the flip-flop FF2 is reset by applying the output of the equal-size position detection circuit comprising the equal-size position sensor S1 and the resistor R1 to the reset input terminal via the inverter 1N2, and turning on the equal-size position sensor S1. When flip-flop FF2 is reset, relay RA1 is turned off and AND gate G2 is established. This and gate G
2 is established by inputting the outputs of flip-flops FF2 and FF4 via inverters 1N3 and 1N4, as well as inputting the output of flip-flop FF3 and the variable-magnification position detection circuit consisting of variable-magnification position sensor S2 and resistor R2, and resetting flip-flop FF2. and set flip-flop FF4.
Therefore, transistor Q4 is a flip-flop.
The output of FF4 is applied to the base via buffer A4, turning on and exciting relay RA2. The magnification switching drive motor M is reversely rotated when the normally open contact RA2-a1 of the relay RA2 is turned on, thereby driving the optical system to the magnification changing position. Thereafter, when the optical system reaches the variable magnification position, the variable magnification position sensor S2 detects this and turns on, resetting the flip-flop FF4. That is, the flip-flop FF4 is reset by inputting the output of the magnification position detection circuit comprising the magnification position sensor S2 and the resistor R2 to the reset input terminal via the inverter 1N5, and turning on the magnification position sensor S2. When flip-flop FF4 is reset, the relay
RA2 is turned off and the magnification switching drive motor M is turned off. That is, the optical system is first set at the same magnification position, then driven to the variable magnification position, and then set at the variable magnification position. FIG. 2 is a timing chart showing the above operation.

Next, the case where the operation key is operated a plurality of times during equal magnification switching drive will be explained. During equal magnification switching drive, flip-flop FF2 is set and the magnification switching drive motor M is rotating in the normal direction. If the variable magnification key is operated here, the flip-flop FF will be turned on as described above.
1 is reset, the same-magnification display lamp L1 goes out, flip-flop FF3 is set, and the variable-magnification display lamp L2 lights up. When the equal magnification key is pressed in this state, the signal from the equal magnification key resets the flip-flop FF3 and turns off the variable magnification display lamp L2, and at the same time, the signal from the equal magnification key is sent to the flip-flop FF through the AND gate G3 by the output of the inverter 1N6.
1 and lights up the 1x display lamp L1.
Inverters 1N6 and 1N1 have flip-flops.
The outputs of FF1 and FF3 are added, and when the magnification switching key consisting of the equal magnification key and the variable magnification key is operated, the flip-flops FF1 and FF3 are set alternately and the magnification display lamps L1 and L2 are also alternately lit. However, since the flip-flop FF2 maintains its set state, the magnification switching drive motor M continues to rotate in the normal direction until the equal magnification position sensor S1 is turned on. If the last key operated during this same-magnification switching drive is the same-magnification key, the flip-flop FF2 is reset when the same-magnification position sensor S1 is turned on, and the magnification switching drive motor is activated. M stops and the magnification switching operation is completed. However, if the last key operated during the same magnification switching drive is the variable magnification key, the same magnification position sensor S1 is turned on and the same magnification switching operation is completed, and the AND gate G2 is established and the flip-flop FF4 is set. The magnification switching drive motor M starts reverse rotation,
Thereafter, the magnification changeover operation is completed when the magnification change position sensor S2 is turned on. That is, if the magnification switching key is operated multiple times during the magnification switching drive, only the last operated key becomes effective and the mode of that key is entered. Note that the AND gate G4 has the outputs of the flip-flops FF2 and FF4 connected to the inverter 1N7,
1N8 and the output of the equal-magnification position detection circuit consisting of the equal-magnification position sensor S1 and resistor R1 and the flip-flop FF1, and when the AND of these inputs is established, the flip-flop FF2 is set.

Although the above embodiment is an example of a case where there is one type of variable magnification, it can be similarly implemented even when there are two or more types of variable magnification.

As described above, according to the present invention, even when the optical system is being driven to change the magnification, it is possible to give an instruction to change the magnification, so there is no need to wait for the completion of driving the optical system each time, which is very convenient. It's convenient. Moreover, when the optical system is being driven to a position corresponding to the first magnification, an instruction of the second magnification causes the optical system to be driven to the position corresponding to the second magnification after the optical system has been moved to the position corresponding to the first magnification. Therefore, while the optical system is being driven to the position corresponding to the first magnification, the optical system is driven to the second position.
If you change the drive to a position according to the magnification of It is possible to solve the problem of easily causing deterioration. In addition, since only the latest magnification instructed by the operation unit is displayed, it is possible to display the position according to which magnification the optical system will finally be driven while the optical system is being driven.

[Brief explanation of drawings]

Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
The figure is a timing chart of the same embodiment. FF1~FF4...Flipflop, G1~G4
...and gate, 1N1 to 1N8...inverter,
Q1 to Q4...Transistor, RA1, RA2...Relay, M...Magnification switching drive motor, S1...Same magnification position sensor, S2...Variable magnification position sensor, R1 to R
2...Resistor, L1, L2...Magnification display lamp.

Claims (1)

[Claims] 1. In an image processing device that drives an optical system to a position according to a magnification according to an instruction from an operation section, a display means for displaying the magnification instructed from the operation section, and a first magnification instruction from the operation section. means for allowing the operating section to specify a second magnification while the optical system is being driven from an arbitrary position to a position corresponding to the first magnification; Optical system driving means for driving the optical system to a position according to the second magnification after completion of driving the optical system to the position according to the first magnification according to the instruction of the second magnification during driving to the corresponding position. The display means displays the first magnification when the first magnification is specified, and is driven from an arbitrary position to a position according to the first magnification according to the instruction of the first magnification. When an instruction for a second magnification is received while the optical system is being driven to a position corresponding to the first magnification, the display is changed from the first magnification to the second magnification and displayed. An image processing device characterized by: