JPH039464B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a control method for an electronic copying machine, and more particularly to a control method for testing constituent electrical components and their drive circuits during maintenance of the electronic copying machine. Conventionally, in electronic copying machines, each component is marked with an XY matrix symbol (for example, the main motor is X2-X3) to make it convenient for service personnel to test each component. Connect the X and Y lead wires to the specified locations on the control board (for example, connect the X lead wire to X2 and the Y lead wire to
Y3) to operate the desired component (e.g. main motor). In such a configuration, the number of lead wires and connection contacts equal to the number of parts to be inspected is required, increasing costs and increasing the size of the board. Moreover, there is an inconvenience in that the service person has to connect the X and Y lead wires respectively. In order to eliminate this inconvenience, a method has been proposed in which a specific key for specifying and selecting a component to be inspected is built in in advance, and by selecting the key, the desired component is driven. In this method, several subroutines are usually stored in the machine control section, and the entire machine is controlled by a computer. By selecting a specific key, the service person or operator can call the corresponding subroutine and operate and inspect the desired part. In such a method, for example, If you want to move 10 different parts, you will need 10 specific keys, and you will also need separate keys for start and stop. This means that an increase in the number of control parts directly leads to an increase in hardware (keys and their space), which is also disadvantageous for downsizing and simplifying the structure. Further, a technology that allows specifying a component inside a copying machine using a function button on the console panel of the copying machine is disclosed, for example, in Japanese Patent Application Laid-Open No. 127643/1982. Because the function buttons are used to specify and operate parts in the copier at the same time, the disadvantage is that many parts cannot be specified from the console panel, and the operation of many parts cannot be controlled on and off at arbitrary timings. There were flaws. An object of the present invention is to eliminate the above-mentioned drawbacks, to enable individual selection of a large number of parts from a console panel through simple operations, and to perform operational tests of the selected individual parts at any timing. The purpose of the present invention is to provide a method for controlling a copying machine. Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. 1 is a programmer section, which includes a number setting device 12 such as a numeric keypad switch or a rotary switch;
A set number memory 13 for storing the set number of copies, and a copy number counter 1 for counting and storing the number of copied copies.
4, and a comparator 15 that compares the contents of the memory 13 and the counter 14 to determine whether or not a set number of copies have been completed. 6 is a decoder that reads the contents of the set number of copies memory 13, converts the code, and generates signals e ₁ to e _l specifying the parts to be inspected and their operation modes; a control circuit that generates signals f ₁ to f _n for selecting components to be operated and their operating modes according to a predetermined sequence; 8;
is a component selection drive circuit that receives a component and its operation mode designation signal from either the decoder 6 or the control circuit 7, selects the corresponding component, and operates it according to the selection of the test/copy selection switch. be. During normal copying operation, the test/copy selection switch is set to the "copy" side, and at this time the component selection drive circuit 8 is prepared to receive component and operation designation signals f ₁ to f _n from the control circuit 7. (The specific circuit example will be described later). When the copy number data is input to the memory 15 by the copy number setter 12 and stored, the output d of the comparator 15 goes to L level, indicating that the content b of the copy number counter 14 and the set copy number a are not equal. In this state, start signal g
(generated by a normal start print switch), the control circuit 7 operates, and sends the component/operation designation signals f ₁ to f _n to the component selection drive circuit 8 in a predetermined sequence. The latter output signals k ₁ , k _{2 .} . . k _o selectively operate the corresponding components. Control circuit 7
supplies a count signal c to the copy number counter 14 each time one copy is completed, and counts up the counter. When a≦b, the signal d of the comparator 15 becomes H level, and the control circuit 7 ends the copying operation. Next, when maintaining, inspecting, or repairing the copying machine, turn the test/copy selection switch to the "test" side. The component selection drive circuit 8 does not accept the output signals f ₁ to f _n from the control circuit 7, but only receives the component/operation selection signals e ₁ to e _l from the decoder 6, and outputs the control outputs k ₁ to k _o . It functions to transmit information to drive parts. An example of a circuit for this purpose is shown in FIG.
When the test/copy selection switches 9-1 and 9-2 are connected to the copy side, the 1 input of the logic gate 81 is always 0, and no matter how the output e _i of the decoder 6 changes, the output of the gate 83 is always held at 0. In other words, the component selection drive circuit 8 cannot be controlled depending on the signal e _i . On the other hand, since one input of the logic gate 82 is always 1, when the signal f _i from the control circuit 7 changes, the outputs of the gates 82 and 83 are inverted and the drive transistor Tri is controlled, thereby controlling the selected transistor. Part 10i is driven.
Note that S2 is a start print switch, and S3 is a stop print switch, each of which is normally open. On the other hand, when switches 9-1 and 9-2 are connected to the test side, one input of logic gate 81 is always 1, one input of logic gate 82 is always 0, and component selection drive circuit 8 is driven by signal e _i . and become controlled. That is, if e _i is 0 (indicating that the corresponding component is not selected for testing), the output of gate 83 is 0, and the output of flip-flop 8 is 0.
The output of 4 is 1, so the transistor Tri is 0
It becomes a bias, and the corresponding part 10i does not operate.
If e _i is 1 (indicating that the corresponding part is selected for testing), the output of gate 83 becomes 1, and therefore, by closing start print switch S2, flip-flop 8
4 becomes 0, the transistor Tri becomes forward biased, and the corresponding component 10i is energized. When stop print switch S3 is then closed, the output of flip-flop 84 is inverted and component 10i is deenergized. Since such a circuit is provided for each component, after the operator connects the test/copy selection switches 9-1 and 9-2 to the test side and sets the appropriate component/operation designation signal e _i , When the start print switch S2 is closed, only the desired parts are energized and driven, and when the stop print switch S3 is closed, the energization and drive can be cut off. In the present invention, the desired test parts are specified by the number setter 1 according to a predetermined part code.
This is done by setting the number of copies to 2. Now, when the number of copies for specifying the part to be tested is set in the number setter 12 of the programmer section 1, the set number of copies is stored in the memory 13. The decoder 6 decodes the set number of pieces data and uses it as a component/operation designation signal for each component to be operated.
Output e ₁ ~ e _l . FIG. 3 is a block diagram showing an example of a decoding circuit, where I ₀ and I ₁ are binary signals for setting the number of sheets, e ₁ ,
e ₂ ... is a signal specifying the component under test and its operation. As is clear from the figure, in the illustrated example, logical conversion as shown in Table 1 is performed.

[Table] Therefore, if each part to be inspected and its operation corresponds to each signal e ₁ to _{e l} ,
The part to be inspected and its operation can be selected by the same operation as setting the number of copies during a copying operation. The thus designated component is energized by operation of start print switch S2 and stopped by operation of stop print switch S3, as described above with respect to FIG. As is clear from the above description, according to the present invention, each component in the copier can be specified using the numeric keypad for setting the number of copies, and the operation of the selected component can be turned on or off using the existing start print switch and stop switch. This can be done using a print switch. Therefore, it is possible to arbitrarily select a desired part from among a large number of parts with a simple operation, and to test whether the selected part operates normally or not at any time. be. Another advantage is that the amount of hardware added to the basic configuration of the copying machine can be kept to a minimum.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG.
The figure is a block diagram showing an example of test/copy selection means, and FIG. 3 is a block diagram of an example of the decoder shown in FIG. 1. 1...Programmer section, 6...Decoder, 7...
Control circuit, 8...Component selection drive circuit, 9-1, 9
-2...Test/copy selection switch, 12...
Number of sheets setting device, 13...Setting number of sheets memory, 14...
Copy number counter, 15... Comparator, 10...
parts.

Claims (1)

[Scope of Claims] 1. A console panel including at least a numeric keypad for setting the number of copies, a start print switch, and a stop print switch; a sequence control circuit that is started by an operation signal of the start print switch and controls the copying operation in sequence; A mode switching means for switching between a normal copying mode and a test mode for each part of a copying machine, a plurality of parts each having an individually determined part code, and a parts selection driving means for selecting the plurality of parts. In the method for controlling a copying machine, a normal copying mode selection signal is input from the mode switching means to the component selection drive means, so that the component selection drive means is controlled by the sequence control circuit into a predetermined sequence. Therefore, based on the input of the output component/operation designation signal, the corresponding component is selected, the selected component is commanded to start and stop the operation, and the test mode selection signal from the mode switching means is applied to the component. By inputting the input to the selection driving means, the parts selection driving means selects a part corresponding to the part code based on the part code inputted from the numeric keypad for setting the number of pieces, and A copying machine characterized in that a selected part is commanded to start operation by inputting an operation signal of a start print switch, and a command is given to a selected part to stop operation by inputting an operation signal of the stop print switch. Control method.