JPH0588967U - Recording device - Google Patents

Abstract

(57) [Summary] [Purpose] The indicator lamp near the location of the abnormality in the main body of the recording device is turned on to facilitate the discovery of the abnormality. [Structure] Various detection elements are arranged in the main body of the recording apparatus, and an indicator lamp is arranged in the vicinity of the detection elements. The operating state of the detecting element 10 detected by the detecting means A is C which is the judging means B.
The PU determines whether the recording operation is possible. When the recording operation is impossible, the display unit 14 arranged in the vicinity of the detection element 10 is driven by the display means C and is turned on. This display state is maintained even after the door provided in the recording apparatus main body is opened, and is released when it is determined that the recording operation is possible based on the detection information of the detection element.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a recording apparatus that makes it easy to find a defective portion by displaying on a display unit which area in the apparatus the defect has occurred when the recording operation is impossible.

[0002]

[Prior Art]

 Conventionally, when the recording operation is impossible in the recording apparatus, the contents are transmitted to the controller by the communication apparatus, or the operator is warned using the display panel.

[0003]

[Problems to be solved by the device]

 However, with this measure, although it was possible to display information that recording was not possible, it was not enough to point out a defective part inside the recording device, leading to a reduction in efficiency in repair work. Further, although detailed information could be transmitted by a communication device, at least a controller and a defect information display device, which were separately provided, were necessary, which impaired the mobility of the repair work.

The present invention has been made in view of the above circumstances, and provides a recording apparatus capable of improving the efficiency of repair work by easily obtaining detailed information when a recording operation is not possible. It is an object.

[0005]

[Means for Solving the Problems]

 The present invention has been made to solve the problems of the conventional example as described above, and uses the detection means for detecting the operating state of various detection elements in the recording apparatus main body and the information detected by the various detection elements. If the recording operation is impossible, it is composed of a judgment means for judging whether or not the recording operation is possible, and a display means for driving the display portion by arranging the display portion in the vicinity of the various detection elements. In addition to driving the display unit in the vicinity of the detection element that detects the failure, the display unit maintains the display state before opening even after the door provided in the recording apparatus main body is opened, and the display unit When it is determined from the detection information that the recording operation is possible, the driving of the display unit is canceled to achieve the above-mentioned object.

[0006]

[Action]

 The operating state of the various detection elements detected by the detection means is judged by the judgment means whether or not the recording operation is possible, and the display section arranged in the vicinity of the various detection elements is driven by the display means to record. When the operation is impossible, the display unit is turned on and displayed. The display state is maintained even after the door provided in the main body of the recording apparatus is opened, and when it is determined that the recording operation is possible based on the detection information of the various detection elements, the driving of the display unit is released and the light is turned off.

[0007]

【Example】

 An embodiment of this invention will be described with reference to the drawings. (Structure) FIG. 1 is a schematic diagram showing a structure of an embodiment of the present invention, FIG. 2 is a block diagram of an electric circuit of the above embodiment, and FIGS. 3 to 5 are other embodiments of the electric circuit block diagram. It is an electric circuit diagram.

In FIG. 1, M is a recording device, and 1 to 19 are components of the recording device M. 1 is a photosensitive drum, 2 is a unit including a laser, 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 heat fixing and paper carrying, 6 is a paper discharge roller, Reference numeral 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 paper presence / absence sensor in the paper feeding cassette, 11 is a paper feeding cassette presence / absence sensor, 12 is a fixing paper ejection sensor, 13 is a door sensor, and each of these sensors 10 to 13 constitutes a detection element D. 14 is an LED that lights when there is no paper in the paper feed cassette 7, 15 is an LED that lights when a paper feed cassette is not mounted, and 16 is when the fixing paper ejection sensor 12 detects a paper jam. An LED that is turned on, 17 is an LED that is turned on when the main motor 4 fails, 18 is an LED that is turned on when the polygon motor 3 is broken, and 19 is an LED that is turned on when the door is open. It constitutes the display unit E.

FIG. 2 is a block diagram of an electric circuit including a detection circuit which is the detection unit A, a CPU which has ROM and RAM built therein which is the determination unit B, and an LED drive circuit which is the display unit C.

Referring to FIG. 2, the detection means A includes a detection circuit that outputs a detection signal SNS10 according to the operating state of the photo interrupter, which is the paper presence / absence sensor 10 in the paper feed cassette, and the paper feed cassette presence / absence sensor. A detection circuit that outputs a detection signal SNS11 according to the operating state of the switch that is 11, and a motor drive circuit that outputs a motor ready signal MRDY1 according to whether or not the rotation speed of the main motor 4 has reached a specified rotation speed. It is represented by 101. The detection circuits of the fixed paper discharge sensor 12 and the door sensor 13 are substantially the same as the detection circuit of the paper presence sensor 10, and therefore the illustration thereof is omitted. The judgment means B is represented by a CPU which uses the detection signal of the detection means A as an input signal and drives the display means C according to the judgment result. The display means C is represented by an LED 14 which is turned on and off depending on the presence / absence of paper in the paper feed cassette, and a display circuit by 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 is omitted.

(Operation) An operation will be described based on the above configuration. When the paper feed cassette is not inserted, the switch 11 is off and the signal level of the detection signal SNS11 which is the output signal of the detection circuit becomes H. The CPU determines that the signal level of the detection signal SNS11 has become H, sets the signal level of the drive signal LEDD2 of the LED drive circuit to L, lights the LED 15, and displays a defect. When the paper feed cassette is inserted, the switch 11 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 and turns off the LED 15 to make a normal operation. Show that you are in a state.

Further, when the paper feed cassette is not inserted, the light receiving portion of the photo interrupter used for the paper presence sensor 10 detects light, so that the signal level of the detection signal SNS10 which is the output signal of the detection circuit is It becomes L. The CPU determines that the signal level of the detection signal SNS10 has become L, sets the signal level of the drive signal LEDD1 of the LED drive circuit to L, lights the LED 14, and displays a defect. When the paper feed cassette with paper is inserted, the photo interrupter 10 is shielded from light and the signal level of the detection signal SNS 10 becomes H. Therefore, the CPU sets the signal level of the drive signal LEDD1 to H and turns off the LED 14. To display that it is in a normal state.

The main motor 4 (the same operation also applies to the polygon motor 3) starts rotation when the CPU outputs a motor drive signal MON1 to the motor drive circuit 101. The motor drive circuit 101 receives the rotation speed detection signal FG fed back from the main motor 4 and sends a motor ready signal MRDY1 to the CPU when it determines that the rotation speed has reached the specified rotation speed. The CPU sets the signal level of the motor drive signal MON1 to H so that the signal level of the motor ready signal MDRY1 does not become H even if a predetermined time has elapsed after the main motor 4 started rotating. At this time, the CPU sets the signal level of the LED drive signal LEDD4 to L, lights the LED 14, and displays the defect.

As described above, the CPU controls the LED15, LED14, and LED19, which are the corresponding display units, for the paper feed cassette presence / absence sensor 11, the paper presence / absence sensor 10 in the paper feed cassette, and the door sensor 13 according to the operating state. Turn on or off. As for the indications of the LEDs 17 and 18 which are the failure indications of the motor, the LEDs are turned on when a failure occurs, and are kept until the power is turned off. Regarding the display of the LED 16 which is a paper jam indication, the LED is turned on when a paper jam occurs, and is held until the door provided in the main body of the recording apparatus is opened and then closed again.

Next, a second embodiment will be described based on the electric circuit diagram shown in FIG. In the figure, the same or corresponding parts as those of the first embodiment are designated by the same reference numerals. In FIG. 3, C1 is a display means, which includes a display section driving transistor Tr1, a resistor R5, and an LED 14 of the display section.

In this embodiment, when the LED is driven, it is directly performed by the information detected by the detection element without depending on the judgment of the CPU. For example, when the photo interrupter, which is the paper presence sensor 10, is installed so that it is shielded by the presence of paper and the absence of paper is detected, the transistor Tr1 is turned on and the LED 14 is turned on. By doing so, it is possible to simplify the control program built in the CPU, which is the judging means, and to fulfill the same function as in the first embodiment.

Next, a third embodiment will be described based on the electric circuit diagram shown in FIG. In the figure, the same or corresponding parts as in the first embodiment are designated by the same reference numerals. In FIG. 4, C2 is a display means, which is composed of a resistor R5 and an LED 14 of the display section.

In this embodiment, when the photo interrupter, which is the paper presence / absence sensor 10, detects the absence of paper, the LED is directly turned on by the output of the photo interrupter, and the same as in the second embodiment. The effect is obtained and the cost is lower.

Next, a fourth embodiment will be described based on the electric circuit diagram shown in FIG. In the figure, the same or corresponding parts as in the first embodiment are designated by the same reference numerals. In FIG. 5, C3 is a display means, which is composed of a resistor R6 and an LED 15 of the display section.

In this embodiment, the LED 15 of the display unit is installed between the switch 11 of the paper feed cassette sensor and the pull-up resistor R6, and it is detected when the cassette is set and the switch 11 is turned on. At the same time when the signal level of the signal SNS11 becomes L, the LED 15 is turned on. With this structure, the same effect as that of the first embodiment can be obtained, and the cost is lower.

[0021]

[Effect of the device]

 As described above, according to the present invention, since the display unit is installed in the vicinity of various sensors for detecting that the recording operation is possible, the judgment result of whether the recording operation is possible or not can be displayed. The efficiency of repair work can be improved by displaying it on the part.

[Brief description of drawings]

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

FIG. 2 is a block diagram of an electric circuit of the above embodiment.

FIG. 3 is an electric circuit diagram of another embodiment of the present invention.

FIG. 4 is an electric circuit diagram of another embodiment of the present invention.

FIG. 5 is an electric circuit diagram of another embodiment of the present invention.

[Explanation of symbols]

 M recording device 10 paper presence / absence sensor 11 paper feed cassette presence / absence sensor 12 fixing paper ejection sensor 13 door sensor 14-19 LED A detection means B determination means C, C1, C2, C3 display means D detection element E display section

Front Page Continuation (72) Inventor Akihisa Kusano 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Tomohiro Nakamori 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Yuzo Kiyono 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (1)

[Scope of utility model registration request] 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. When the recording operation is impossible, the display unit is positioned in the vicinity of the detection element and is driven by the display unit. When the recording operation is impossible, it is possible to drive the display unit in the vicinity of the detection element. Characteristic recording device.