JP3162805B2 - Image forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a copying machine, a facsimile, and a laser beam printer.

[0002]

2. Description of the Related Art Conventionally, a configuration for determining a product program state and a check program state of an image forming apparatus has been configured as shown in FIG. FIG. 6 is a circuit diagram of a conventional image forming apparatus. In FIG. 6, reference numeral 50 denotes a CPU for controlling a printing unit, SW1 denotes a switch for setting a function check mode, SW2 denotes a switch for setting a sequence check mode, SW3 denotes a switch for setting a test print mode, and SW4 denotes a laser light amount check mode. , R5 to R8 are pull-up resistors corresponding to the respective SW1 to SW4, and R1 to R4 are input resistors between the respective SW1 to SW4 and the CPU 50.

Next, the operation of the conventional example will be described with reference to FIG. FIG. 7 is a flowchart for controlling the operation in the conventional example. 6 and 7, immediately after the power is turned on {step (hereinafter referred to as S) 71}, the CPU 50 monitors the state of the function check mode setting switch SW1 (S72). If the function check mode switch SW1 is in the ON state, a function mode, which is the check program mode A, is entered (S73). If the function check mode switch SW1 is in the OFF state, the sequence check mode setting switch SW2
Is monitored (S74). If the sequence check mode setting switch SW2 is in the ON state, the sequence enters the sequence check mode S79, which is the check program mode A.

In the sequence check mode S79, the states of the test print mode setting switch SW3 and the laser light amount check mode setting switch SW4 are monitored, and the test print mode setting switch SW
If 3 (S75) is ON, the operation proceeds to the test print mode (S76). If the laser light amount check mode setting switch SW4 (S77) is ON, the operation proceeds to the laser light amount check mode (S78).

Immediately after the power is turned on, the CPU 50 sets both the function check mode setting switch SW1 and the sequence check mode setting switch SW2 to O.
When it is determined that the state is the FF state, the state transits to the product program mode B.

In the product program mode B, the CPU 50 sets the test print mode setting switch S
W3 and laser light amount check mode setting switch SW
4 is monitored (S80, S81), if the test print mode setting switch SW3 is ON, the operation proceeds to the test print mode (S81), and if the laser light amount check mode setting switch SW4 is ON, the laser light amount check mode (S83). ).

[0007]

However, the above-mentioned prior art has the following problems (1) to (5). (1) Since one mode setting switch is provided for each mode, the number of signal lines from the CPU increases,
This has led to an increase in O ports. (2) The mounting area tends to increase by mounting a multi-pin IC due to the increase in the number of I / O ports, which has been an obstacle to miniaturization. (3) Since one mode setting switch is provided for each mode as described above, the number of switches tends to increase, which is an obstacle to cost reduction. (4) As described above, the mounting area tends to increase due to the increase in the number of switches, which has been an obstacle to miniaturization. (5) As described above, since there are many mode setting switches, the product inspection jig and the service jig also tend to be large.
There was a problem in terms of maintenance.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is possible to reduce the number of I / O ports of a CPU, thereby reducing the mounting area of an IC and downsizing. Another object is to reduce the cost by using two mode setting switches, to reduce the size of the product inspection jig and the service jig, and to be effective in terms of maintenance.

[0009]

Means for Solving the Problems To achieve the above object,
Therefore, in the present invention, the image forming apparatus is configured by the following (1) to (5).
Configure as follows. (1) First switch, second switch, and power-on
Detecting the operating states of the first and second switches
The hardware inspection of the image forming apparatus.
Function check mode, sequence check mode
Mode and product program mode
That is, a first determining means for determining one operation mode to be executed
And the predetermined operation mode is determined by the first determination means.
After that, the operation state of the first and second switches is detected.
By doing so, operation modes other than the above three operation modes
A second discriminating means for discriminating the mode, wherein the first discriminating means is provided.
In addition to the execution of the operation mode determined by
An image forming apparatus that allows execution of the operation mode determined by the determination unit. (2) Further, a predetermined operation mode is set by the first determination means.
Operation mode of the first and second switches after the
State by detecting the state of the three operation modes
What is the operation mode determined by the first determination means?
Determination means for determining whether to shift to a different operation mode
Wherein having (1) an image forming apparatus according. (3) The predetermined operation mode is a sequence check mode.
(1) or in the program or product program mode
The image forming apparatus according to (2) . (4) The image forming apparatus includes a laser unit and a scanner.
It has a laser / scanner unit including a
Operation modes other than the operation mode are the laser / scanner
Laser light check mode and test print mode
Any of the above (1) to (3) having at least one
The image forming apparatus according to. (5) The predetermined operation mode is the sequence check
Mode and product program mode, wherein the first determination
Means for checking the sequence check mode and product
No matter which of the program modes has been determined,
Serial laser light switch Ekkumodo and test print mode
(4) The image forming apparatus according to (4), wherein

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 to FIG.
This will be described with reference to FIG. FIG. 1 is a circuit configuration diagram of an image forming apparatus according to a first embodiment of the present invention, FIG. 2 is a flowchart for controlling the operation of the first embodiment, and FIG. (1), and FIG. 4 is a diagram (2) showing the relationship between the mode setting switch and the program mode of the first embodiment.

In FIG. 1, reference numeral 10 denotes a CPU in a control system;
SW10 is a mode setting switch, SW11 is a mode setting switch, and R10 is a switch from the SW10 to the CPU1.
The input resistance to 0, R11 is from the SW11 to the CPU
R12 is a pull-up resistor of the SW10, and R13 is a pull-up resistor of the SW11.

Next, the operation of the first embodiment will be described with reference to FIGS.
This will be described with reference to FIG. 1 and 2, the CPU 1
0 is the state of the SW10 and the SW11 immediately after the power is turned on {step S21 in FIG.
2). If it is determined that both the switches SW10 and SW11 are in the ON state, the flow shifts to the function check mode (S23) which is the check program mode A.

If both the switches SW10 and SW11 are in states other than the ON state, the state of the switch SW11 is monitored (S24). If it is determined that the switch SW11 is in the ON state, the flow shifts to a sequence check mode (S29) which is a check program mode.

In the sequence mode, the SW1
If it is determined that both 0 and SW11 are ON, the mode transits to the laser light amount check mode (S26). SW10
If both SW11 and SW11 are in states other than the ON state,
The state of W10 is monitored (S27). SW10 is O
If it is determined that the state is N, the test print mode (S28)
Transition to f.

Immediately after turning on the power, the CPU 10
After it is determined that both the switch 10 and the switch 11 are in the state other than the ON state, if the switch 11 (S24) is further determined to be in the OFF state, a transition is made to the product program mode B.

In the product program mode B, similarly to the sequence check mode in the check program mode A, the laser light amount check mode (S3
1) It is possible to transition to the test print mode (S33).

FIG. 3 shows the relationship (1) between each of the mode setting switches SW10 and SW11 and the program mode when the power is turned on. FIG. 4 shows the relationship (2) between each of the mode setting switches SW10 and SW11 and the program mode after the power is turned on.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a flowchart for controlling the operation of the second embodiment of the present invention. In FIG. 5, the second embodiment is different from the first embodiment in that the product program mode B
After the transition to (S54), the state of the SW11 is monitored (S54).
Then, if it is determined that the SW 11 is in the ON state, it is possible to transit to the sequence check mode S59 in the check program mode A. After further transition to the sequence check mode, the state of the SW 11 is monitored (S5).
4) If it is determined that the SW 11 is in the OFF state, it is possible to shift to the product program mode B.

[0028]

As described above, according to the present invention, by monitoring the state of the two mode setting switches and transiting to each program mode, the following effects (1) to (4) are obtained. . (1) Since only two mode setting switches are set,
The number of signal lines from the CPU is reduced, and the number of I / O ports can be reduced. (2) Since the number of I / O ports can be reduced as described above, the number of pins of the IC can be reduced, the mounting area can be reduced, and the size can be reduced. (3) Since only two mode setting switches are set, the cost can be reduced. (4) By reducing the number of mode setting switches,
Product inspection jigs and service jigs can also be miniaturized, which is effective in terms of maintenance.

As described above, the present invention is very effective not only for solving the problems of the conventional example but also for reducing the cost and size of the product.

[Brief description of the drawings]

FIG. 1 is a circuit configuration diagram of an image forming apparatus according to a first embodiment of the present invention.

FIG. 2 is a flowchart for controlling the operation of the first embodiment.

FIG. 3 is a diagram (1) showing a relationship between a mode setting switch and a program mode according to the first embodiment.

FIG. 4 is a diagram (2) showing a relationship between a mode setting switch and a program mode according to the first embodiment;

FIG. 5 is a flowchart for controlling the operation of the second embodiment of the present invention;

FIG. 6 is a circuit configuration diagram of a conventional image forming apparatus.

FIG. 7 is a flowchart for controlling the operation of the conventional example.

[Explanation of symbols]

 10, 50 CPU SW10, SW11 Mode setting switch A Check program mode B Product program mode In the drawings, the same reference numerals indicate the same or corresponding parts.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B41J 29/38 B41J 2/44 B41J 29/46 G03G 21/00 510 H04N 1/00 106

Claims (5)

(57) [Claims] A first switch, a second switch, and an operation state of the first and second switches when power is turned on.
By detecting, the hardware of the image forming apparatus
Function check mode and sequence for inspection
Three operations of check mode and product program mode
Determine which operation mode to execute from among the modes
A first determination unit, and a predetermined operation mode determined by the first determination unit;
Later, the operation state of the first and second switches is detected.
Thus, operation modes other than the above three operation modes are determined.
A second discriminating means for performing the operation mode determined by the first discriminating means.
In addition, the operation mode determined by the second determination means
An image forming apparatus characterized in that the execution of the image forming apparatus is permitted . 2. The method according to claim 1, further comprising :
After the operation mode is determined, the first and second switches
By detecting the operation state of the three
The operation mode determined by the first determination means
To determine whether to transition to an operation mode different from the mode
The image forming apparatus according to claim 1, further comprising a determination unit . 3. The method according to claim 1, wherein the predetermined operation mode is a sequence check.
It is characterized by the lock mode or the product program mode
The image forming apparatus according to claim 1, wherein: 4. An image forming apparatus, comprising: a laser unit;
And a laser / scanner unit including a scanner motor
The operation modes other than the three operation modes are laser / scan mode.
Check mode and test print
Claims having at least one of the modes
Item 4. The image forming apparatus according to any one of Items 1 to 3 . 5. The method according to claim 1, wherein the predetermined operation mode includes the sequence
Check mode and product program mode.
The sequence check mode and the
And product program mode are determined.
Also, the record over The light check mode and test pudding
5. The execution of the default mode is allowed.
Placing the image forming apparatus.