JPH09188047A - Recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve low cost by eliminating bundles of lines for indicators and printed circuit boards for fixing indicators, in a recording device in which indicators are located near various sensing elements in a body of the device to easily find out defective parts. SOLUTION: There are provided sensors 10, 11 in a body of recording device to sense conditions of each part in the body of recording device to judge if it is possible to effect recording action by means of CPU. And if recording action can not be taken, corresponding LEDs 14-19 are turned on and light emitted therefrom is passed through each optical fiber 24-29 so as to be transmitted to indicators located near the sensors 10, 11. And a judging means B with the CPU and an indicator means C for turning on and actuating the indicators are provided on the same packaging board F.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus which makes it easy to find a defective portion by displaying on a display unit which area in the apparatus has a defective area when a recording operation is impossible. .

[0002]

2. Description of the Related Art Conventionally, as a means for finding a defective portion when a recording operation is disabled in a recording apparatus,
For example, as disclosed in Japanese Utility Model Laid-Open No. 5-88967, a display unit is installed in the vicinity of various sensors provided to detect that a recording operation is possible.
This makes it possible to improve the efficiency of the repair work.

FIG. 4 is a schematic diagram showing the structure of a conventional recording apparatus in which a display section is provided near various sensors as described above. In the figure, M is a recording device, and each component of 1 to 19 is provided in the main body of the device.

That is, 1 is a photosensitive drum, 2 is a laser unit, 3 is a polygon motor, 4 is a main motor for paper conveyance and rotation of the photosensitive drum, 5 is a fixing roller for heat fixing and paper conveyance, and 6 is a discharge roller. , 7 is a paper feed cassette, 8 is a paper feed roller, and 9 is a registration roller for adjusting the leading end position of the paper.

Reference numeral 10 is a sensor for detecting the presence / absence of paper in the paper feeding cassette 7, 11 is a sensor for detecting the presence / absence of the paper feeding cassette 7, 12 is a sensor for detecting fixing paper ejection, and 13 is for detecting opening / closing of a door. Sensors, these sensors 10-1
3 constitutes the detection element D.

Reference numeral 14 is an LED that lights up when there is no paper in the paper feed cassette 7, 15 is an LED that lights up when the paper feed cassette 7 is not mounted, and 16 is a paper jam when the sensor 12 for fixing and discharging paper is detected. L that lights up when is detected
ED, 17 is an LED that lights when the main motor 4 fails, 18 is an LED that lights when the polygon motor 3 fails, and 19 is an LED that lights when the door is opened. Each of these LEDs 14 to 19 is displayed. It constitutes part E.

FIG. 5 is a diagram showing the construction of an electric circuit of the recording apparatus M, which circuit is composed of a detection means A, a judgment means B and a display means C.

The detection means A detects the presence / absence of the paper feed cassette 7 and a detection circuit for outputting a detection signal SNS10 according to the operating state of the photo interrupter which is the sensor 10 for detecting the presence / absence of paper in the paper feed cassette 7. A detection circuit that outputs a detection signal SNS11 according to the operating state of a switch that is the sensor 11 for detecting, and a motor ready signal MRDY depending on whether the rotation speed of the main motor 4 has reached a specified rotation speed.
A motor drive circuit 101 that outputs 1 is provided. The sensor 12 for detecting the fixed sheet discharge and the sensor 13 for the door
The detection circuit of (1) is substantially the same as the detection circuit of the sensor 10 for detecting the presence or absence of paper, and therefore the illustration thereof is omitted.

The judging means B comprises a CPU for driving the display means C according to the judgment result using the detection signal of the detecting means A as an input signal. Further, the display means C is provided with an LED 14 which is turned on and off depending on the presence / absence of paper in the paper feed cassette 7, and a display circuit having a current limiting resistor R5. The display circuits of the LED 16, the LED 17, and the LED 18 are substantially the same as the display circuit of the LED 14, and therefore the illustration thereof is omitted.

[0010]

However, in the conventional recording apparatus as described above, the display unit is installed in the vicinity of various sensors for detecting that the recording operation is possible, and the display is performed. There is a problem in that a bundle of wires for displaying to bring the unit closer to various sensors and a PCB (printed wiring circuit board) for fixing the display unit are required, which causes a cost increase in the entire apparatus.

The present invention has been made in view of the above-mentioned problems, and provides a recording apparatus in which a display bundle and a PCB for fixing a display unit can be omitted, and an increase in the cost of the entire apparatus can be eliminated. The purpose is to do.

[0012]

The recording apparatus according to the present invention is capable of recording operation by detecting means for detecting the operating states of various detecting elements in the main body of the recording apparatus and information detected by the various detecting elements. A judgment means for judging whether or not it is present, and a display means for driving a display unit located in the vicinity of the various detection elements. The judgment means and the display means are formed on the same substrate, and the recording operation is impossible. In this case, the display unit in the vicinity of the detection element for detecting the failure is driven.

Further, the display means is such that display information is transmitted to the display section by an optical fiber, and one end of the optical fiber is used as the display section.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIG. 1 shows a recording apparatus M according to an embodiment of the present invention.
5 is a schematic diagram showing the configuration of FIG. 4, and the same reference numerals as those in the conventional example of FIG. 4 indicate the same components.

In FIG. 1, 1 is a photosensitive drum, 2 is a laser unit, 3 is a polygon motor, 4 is a main motor for carrying paper and rotating the photosensitive drum, 5 is a fixing roller for carrying out thermal fixing and paper carrying, and 6 is a discharge roller. Paper rollers, 7 is a paper cassette,
Reference numeral 8 is a paper feed roller, and 9 is a registration roller for adjusting the leading end position of the paper.

Reference numeral 10 is a sensor for detecting the presence / absence of paper in the paper feed cassette 7, 11 is a sensor for detecting the presence / absence of the paper feed cassette 7, 12 is a sensor for detecting fixing paper discharge, and 13 is for opening / closing the door. Sensors, these sensors 10-1
3 constitutes the detection element D.

Reference numeral 24 is an optical fiber that lights up when there is no paper in the paper feed cassette 7, 25 is an optical fiber that lights up when the paper feed cassette 7 is not mounted, and 26 is a sensor 12 for detecting the fixed paper discharge. An optical fiber that is turned on when a paper jam is detected, 27 is an optical fiber that is turned on when the main motor 4 fails, 28 is an optical fiber that is turned on when the polygon motor 3 is broken, and 29 is light that is turned on when the door is opened. Fiber, and these optical fibers 24 ~
One end of each of 29 constitutes the display unit E.

FIG. 2 is a diagram showing a configuration of an electric circuit of the recording apparatus M. This circuit is composed of a detecting means A, a judging means B and a displaying means C, and the judging means B and the displaying means C are formed on the same mounting board (PCB: printed wiring circuit board) F.

The detection means A detects the presence / absence of the paper feed cassette 7 and a detection circuit for outputting a detection signal SNS10 according to the operating state of the photo interrupter which is the sensor 10 for detecting the presence / absence of paper in the paper feed cassette 7. A detection circuit that outputs a detection signal SNS11 according to an operating state of a switch that is a sensor 11 for detecting, and a motor ready signal MRDY depending on whether or not the rotation speed of the main motor 4 has reached a specified rotation speed.
A motor drive circuit 101 that outputs 1 is provided. The sensor 12 for detecting the fixed sheet discharge and the sensor 13 for the door
The detection circuit of (1) is substantially the same as the detection circuit of the sensor 10 for detecting the presence or absence of paper, and therefore the illustration thereof is omitted.

The judging means B comprises a CPU for driving the display means C according to the judgment result using the detection signal of the detecting means A as an input signal. Further, the display means C is provided with an LED 14 which is turned on and off depending on the presence / absence of paper in the paper feed cassette 7, and a display circuit having a current limiting resistor R5. The display circuits of the LED 16, the LED 17, and the LED 18 are substantially the same as the display circuit of the LED 14, and therefore the illustration thereof is omitted.

Here, the LED 14 that lights up when there is no paper in the paper feed cassette 7, the LED 15 that lights up when the paper feed cassette 7 is not mounted, and the sensor 12 for detecting the fixed paper ejection are paper jams. LED 16 which is lit when the main motor 4 is broken, LED 17 which is lit when the main motor 4 is broken, LED 18 which is lit when the polygon motor 3 is broken, and LED which is lit when the door is opened.
Reference numerals 19 correspond to the light sources of the optical fibers 24 to 29 that form the above-mentioned display section E, respectively. That is,
The light emitting portions of the LEDs 14 to 19 are closely attached to the optical fibers 24 to 29, respectively, and the light emitted from the LEDs is transmitted to the display portion E on the opposite side of the optical fibers 24 to 29. .

Next, the operation of this embodiment will be described based on the above configuration.

When the paper feed cassette 7 is not inserted,
The switch provided as the sensor 11 is off, and the signal level of the detection signal SNS11 that is the output signal of this detection circuit becomes H (high level). When the CPU of the determination means B detects that the signal level of the detection signal SNS11 has become H, the drive signal LE of the LED drive circuit of the display means C is detected.
The signal level of DD2 is set to L (low level), and LED15
Is turned on, and the fact that there is a defect is displayed on the display unit E through the optical fiber 25.

When the paper feed cassette 7 is inserted,
The switch is on, and the signal level of the detection signal SNS11 becomes L. Therefore, the CPU sets the signal level of the LED drive signal LEDD2 to H, turns off the LED 15, and displays the normal state on the display unit E through the optical fiber.

Further, when the paper feed cassette 7 is not inserted, the light receiving portion of the photo interrupter used for the sensor 10 for detecting the presence or absence of paper detects light, so that the detection signal SNS10 which is an output signal of the detection circuit is detected. The signal level becomes L. When the CPU detects that the signal level of the detection signal SNS10 has become L, it sets the signal level of the drive signal LEDD1 of the LED drive circuit to L, turns on the LED 14, and the display section E is defective through the optical fiber 24. Display that.

At this time, when the paper feed cassette 7 containing paper is inserted, the photo interrupter 10 is shielded from light and the signal level of the detection signal SNS10 becomes H. Therefore, C
PU sets the signal level of the drive signal LEDD1 to H and sets it to L
The ED 14 is turned off, and the display unit E is passed through the optical fiber 24.
Is displayed in the normal state.

On the other hand, the main motor 4 (polygon motor 3
The same operation is also performed for the above), and the CPU starts rotation by outputting the motor drive signal MON1 to the motor drive circuit 101. The motor drive circuit 101 uses the rotation speed detection signal FG fed back from the main motor 4.
When it is determined that the specified number of revolutions has been reached, the motor ready signal MRDY1 is sent to the CPU.

When the CPU sets the signal level of the motor drive signal MON1 to H and the main motor 4 starts rotating, and the signal level of the motor ready signal MDRY1 does not become H even after a lapse of a predetermined time. Is L
The signal level of the ED drive signal LEDD6 is set to L and LE is set.
D19 is turned on and the defective state is displayed on the display unit E through the optical fiber 29.

As described above, the CPU of the judging means B has the sensor 11 for detecting the presence / absence of the paper feed cassette 7 and the paper feed cassette 7.
LEDs 15 corresponding to the operating states of the sensor 10 for detecting the presence / absence of paper inside and the sensor 13 for detecting the opening / closing of the door,
LED14 and LED19 are turned on, and the optical fiber 2
The display portion E is turned on and off through 5, 24 and 29.

Further, LED 1 which is a failure display of the motor
7. Regarding the display of the LED 18, when the failure occurs, the corresponding LED is turned on and the optical fibers 27, 28
The display portion E is turned on through and the state is maintained until the power is turned off.

Further, LED 1 which is a paper jam display
Regarding the display of No. 6, when the paper jam occurs, the corresponding LED is turned on to turn on the display unit E through the optical fiber 26, and the state is closed again after the door provided in the recording apparatus main body is released. Hold up to.

In this way, when the recording operation of the recording apparatus M is disabled, the display portion E near the sensor for detecting the failure is driven to light up, so that the defective state can be promptly dealt with. However, in the present embodiment, the defective state determining means B and the display means C are configured on the same mounting board F, so that the display bundling line and the PCB for fixing the display portion can be omitted, and the entire device can be eliminated. Cost increase can be prevented.

(Embodiment 2) FIG. 3 is a diagram showing the construction of another embodiment of the present invention, in which the arrangement relationship between the LED and the optical fiber is shown.

In the above-described embodiment, the light emitting portion of the LED is simply brought into close contact with the optical fiber, and the end portion on the opposite side of the optical fiber is positioned near each sensor for display.

However, depending on the recording apparatus, if the light intensity of the display section near the sensor is high, the appearance of the apparatus may be affected. Further, if the light intensity of the display section of the adjacent sensor is equal, it becomes difficult to determine which sensor the sensor belongs to.

Therefore, in this embodiment, as shown in FIG.
By adjusting the light intensity setting by changing the distance or angle at which the individual LEDs and the optical fiber are in close contact with each other, it is possible to improve the external appearance of the device and to reduce the cost by using the same LED. I try to get the effect.

[0037]

As described above, according to the present invention,
Since the judgment means for judging whether or not the recording operation is possible based on the information from the various detection elements and the display means for driving the display section located in the vicinity of each detection element are formed on the same substrate, It is possible to omit the bundled wires and the printed wiring circuit board for fixing the display unit, and it is possible to obtain an effect that the cost increase of the entire device can be eliminated.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of an electric circuit according to an embodiment.

FIG. 3 is an explanatory diagram showing the configuration of another embodiment of the present invention.

FIG. 4 is a schematic diagram showing a configuration of a conventional example.

FIG. 5 is a diagram showing a configuration of an electric circuit of a conventional example.

[Explanation of symbols]

 10 to 13 sensor 14 to 19 LED 24 to 29 optical fiber A detection means B determination means C display means D detection element E display section F mounting board

Claims (3)

[Claims] 1. A detection means for detecting the operating states of various detection elements in the main body of the recording apparatus, a determination means for determining whether or not a recording operation is possible based on the information detected by the various detection elements, and the various types described above. A display unit for driving a display unit located in the vicinity of the detection element, the determination unit and the display unit are configured on the same substrate, and when the recording operation is impossible, A recording apparatus characterized by driving a display unit in the vicinity. 2. The recording apparatus according to claim 1, wherein the display means transmits display information to the display section by an optical fiber. 3. The recording apparatus according to claim 2, wherein one end of the optical fiber is used as a display section.