JP2000335782A - Image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image forming device capable of removing in-machine remaining papers after jamming has been cleared by informing an operator of a door to be opened, and the number of recording papers to be removed when jamming takes place. SOLUTION: A corresponding door is determined based on the position of a recording paper housed in a recording paper information memory part 201, a remaining counter value in the corresponding door is added thereto. After that, an in-machine remaining counter value within the recording paper information memory part 201 is also added thereto, so that the in-machine remaining counter value within the remaining paper information part 201 and a remaining counter value every door, are directed to an operation display part 205 through a main control part 204.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an image forming apparatus which aims to smoothly remove a jam when a jam occurs and to perform a smooth restart.

[0002]

2. Description of the Related Art At present, there are many OA devices using recording paper, such as copiers, fax machines and printers, in offices.
When a jam occurs during use of these devices, a jam occurrence position displayed on the operation unit is confirmed, and a jam processing method corresponding to the jam occurrence position is read. Then, a method corresponding to the jam processing position is executed. If only the jam removal operation is performed according to the procedure, there is a case where the remaining paper in the machine exists.

In a conventional image forming apparatus, when a jam occurs, an operator is informed of a jam occurrence position on a display unit. The operator performs a jam removal operation based on the position of occurrence of the jam according to a procedure for operating a seal affixed in the door opening / closing section or a procedure displayed on the operating section. At this time, if the recording paper is removed according to the jam removal procedure, unless the remaining paper is detected by the paper detection means, the jam removal operation has been completed normally, and the recording paper exists in a portion not detected by the paper detection means. In this case, the operator does not notice the presence of the recording paper and causes a jam again.

[0004]

As described above, where the office efficiency is reduced due to the occurrence of the jam, the office efficiency is further reduced by the occurrence of the jam after the jam recovery again.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and in such a case, how many sheets of recording paper must be removed by opening a door due to the occurrence of a jam for an operator. By providing such information, it is possible to provide an image forming apparatus that can eliminate the remaining paper in the machine after the jam removal operation.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a recording paper position detecting means for detecting a position where a recording paper exists and a recording paper position detecting means are provided. When the position of the recording paper is detected, the counter value is incremented by one for each detected position and stored, and the remaining paper information is stored for each position detected by the recording paper position detecting means. Display means for displaying the counter value added by the means.

According to a second aspect of the present invention, there is provided a recording paper position detecting means for detecting a position where a recording paper exists, and a counter value is incremented by one every time the recording paper position is detected by the recording position detecting means. The first remaining paper information storage means for storing and the second remaining paper information for adding and storing a counter value for each detected position when the position of the recording paper is detected by the recording paper position detecting means. The storage means displays the counter value added by the first remaining paper information storage means and the counter value added for each position detected by the recording paper position detection means by the second remaining paper information storage means. Display means.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the recording paper position detecting means is provided with a plurality of sensors provided in accordance with the position of a door from which the remaining recording paper can be taken out by an operator. It is characterized by comprising.

According to a fourth aspect of the present invention, there is provided a recording paper leading end detecting means for detecting a leading end position of the recording paper by passing the leading end of the recording paper, and a trailing end of the recording paper by passing a trailing end of the recording paper. A recording paper trailing edge detecting means for detecting the passage of the recording paper, a recording paper trailing edge position detected by the recording paper trailing edge detecting means and a recording paper trailing edge position detected by the recording paper trailing edge detecting means. Recording paper position detecting means for detecting the position where the recording paper exists, recording paper position storing means for storing the detected recording paper position, and a discharge door specification for specifying a door capable of discharging the recording paper from the stored recording paper position And a first remaining sheet information storage means for adding and storing a counter value by one each time the position of the recording paper is detected by the recording position detection means, and erasing the stored recording paper position from the recording position storage means. And the door specified by the discharge door A second remaining sheet information storing means for adding and storing a counter value corresponding to the above, a determining means for determining whether or not the recording paper position is still stored in the recording paper position detecting means, and a determining means. When it is determined that the recording sheet position is not stored, the counter value added by the first remaining sheet information storage means and the door detected by the recording sheet position detection means by the second remaining sheet information storage means. And a display means for displaying a counter value added in accordance with (1).

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, when the determining means determines that there is still a recording paper position stored in the recording paper position storing means, the first
The counter value corresponding to the door specified from the recording paper position stored in the recording paper position storage means by the remaining paper information storage means is incremented by one and stored.

According to a sixth aspect of the present invention, in the invention of the fourth aspect, the recording paper leading edge detecting means and the recording paper trailing edge detecting means are provided in accordance with the position of the door from which the remaining recording paper can be taken out by an operator. And a plurality of sensors.

[0012]

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

FIG. 1 shows a schematic configuration of a copying machine which is an image forming apparatus according to an embodiment of the present invention. In FIG. 1, reference numeral 100 denotes a document feeding unit; 101, a scanner unit for reading a document; 102, an image forming unit for forming an image of a recording sheet; A pickup roller 104 for feeding the recording paper fed by the pickup roller 103; a paper feed sensor 105 for detecting the leading or trailing end of the recording paper; Paper sensor 10
5, a transport roller for feeding the recording paper that has passed through 5, a vertical transport sensor 107 that is a detector for detecting the leading edge or trailing edge of the recording paper, and 108, a leading edge or trailing edge of the recording paper before registration. A registration sensor 109 as a detector for detecting
Is a registration roller that temporarily suspends the recording paper to synchronize with the image forming unit 102; 110 is a paper transfer roller that transfers the image formed in the image forming unit 102 to the recording paper;
111 is a fixing roller for fixing the image transferred to the recording paper, 112 is a paper ejection sensor which is a detector for detecting the leading or trailing end of the fixed recording paper, and 113 is a paper ejected outside the machine. Reference numeral 114 denotes a manual paper feed unit for performing manual paper feed, and 115 denotes an operation unit for setting operating conditions by an operator.

Reference numeral 116 denotes a discharge door, and a discharge sensor 112
Used for jam clearance etc. Reference numeral 117 denotes a paper feed vertical transport door, which is used for paper jam processing by the paper feed sensor 105, the vertical transport sensor 107, and the registration sensor. Reference numeral 118 denotes a front door, which is a registration sensor 108 and a paper ejection sensor 112.
Used when clearing jams.

FIG. 2 is a block diagram showing a schematic configuration of a control system of a copying machine according to an embodiment of the present invention. Reference numeral 201 denotes a remaining sheet information storage unit that stores the number of recording sheets remaining in the apparatus due to occurrence of a jam, etc., and 202, a recording sheet that stores information on a leading edge position and a trailing end position of the recording sheet in the apparatus for each sheet. A position storage unit 203 is a recording sheet position detection unit that transmits a state detected by the paper feed sensor 105, the vertical conveyance sensor 107, the registration sensor 108, and the discharge sensor 112 to the main control unit 204. An operation display unit that performs control for displaying an instruction on the operation unit 115;
An image processing unit 206 processes image information read by the scanner unit 101 and sends the processed image information to the image forming unit 102, and 207 denotes a pickup roller 103, a sheet feeding roller 104, and a conveying roller 1
Reference numerals 06, a registration roller 109, a fixing roller 111, and the like, indicate paper feed units that exchange with the main control unit 204 to feed recording paper.

FIGS. 3 and 4 are flowcharts showing the flow up to the display of the number of remaining sheets in the machine for the operator when a jam occurs. Normal operation is performed by the operator using the operation unit 10.
When the operation condition is set to 1 and started, the image processing unit 2
06, an operation instruction is issued from the main control unit 204 to the paper feeding unit 207. As a result, the recording paper started to be fed by the pickup roller 103 and the paper feed roller 104 passes through the paper feed sensor 105, is further conveyed by the conveyance roller 106, passes through the vertical conveyance sensor 106, passes through the registration sensor 108, and Wait at 109.

Thereafter, the recording paper is sent to the paper transfer roller 110 by the registration roller 109 in synchronization with the image forming unit 102, passes through the fixing roller 111, passes through the paper ejection sensor 112, and is ejected to the paper ejection tray 113. You. During this operation, when the leading edge of the recording paper 1 passes through the paper feed sensor 105, the leading edge position of the recording paper 1 passes through the paper feed sensor, and the recording paper position detection unit 203 sends the recording paper to the recording paper position storage unit 202 through the main control unit 204. Is stored. Thereafter, when the trailing edge of the recording paper passes the paper feed sensor 105, the trailing edge of the recording paper passes the paper feed sensor, and is stored in the recording paper position storage unit 202 from the recording paper position detection unit 203 through the main control unit 204. You.

Similarly, when the leading edge of the recording paper 1 passes through the vertical transport sensor 107, the leading edge position of the recording paper 1 passes through the vertical transport sensor, and the recording paper position detecting unit 203 transmits the recording paper position to the main control unit 204. 202.
Thereafter, when the trailing edge of one sheet of recording paper passes through the vertical transport sensor 105, the trailing edge of one sheet of recording paper passes through the vertical transport sensor, and is stored in the recording sheet position storage unit 202 from the recording sheet position detection unit 203 through the main control unit 204. You.

When the leading edge of the recording paper 1 passes through the registration sensor 108, the leading edge of the recording paper 1 passes through the registration sensor, and is stored in the recording paper position storage unit 202 from the recording paper position detection unit 203 through the main control unit 204. Is done. Thereafter, when the trailing edge of one recording sheet passes through the registration sensor 108, the trailing edge of one recording sheet passes through the registration sensor, and is stored in the recording sheet position storage unit 202 from the recording sheet position detection unit 203 through the main control unit 204.

Further, when the leading edge of the recording paper 1 passes through the paper ejection sensor 112, the leading edge position of the recording paper 1 passes through the paper ejection sensor.
4 is stored in the recording paper position storage unit 202. Thereafter, when the trailing edge of the recording paper passes the paper ejection sensor 112, the trailing edge of the recording paper passes the paper ejection sensor, and is stored in the recording paper position storage unit 202 from the recording paper position detection unit 203 through the main control unit 204. You.

As an example, in the registration sensor 108, when the recording sheet 1 causes a jam that the registration sensor has not reached (step S301), the jam in the remaining sheet information storage unit 201 is cleared by the occurrence of the jam in step S301 (step S301). Step S302). After that, recording paper 1
The leading edge position of the recording paper stored from the recording paper position detecting unit 203 through the main control unit 204 is stored in the recording paper position storage unit 20.
2 is stored in the remaining paper information storage unit 201 (step S303), and the leading edge position of the recording paper stored in the remaining paper information storage unit 201 is deleted from the recording paper position storage unit 202. Next, similarly, the rear end position of the recording paper is read from the recording paper position storage unit 202 and stored in the remaining paper information storage unit 201 (step S304).

Then, the door where the recording paper 1 is present is determined from the leading end position and the trailing end position of the recording sheet stored in the remaining sheet information storage unit 201 (step S305, step S305).
307). In this case, the corresponding door is the paper feed vertical transport door 117 because of the jam that has not reached the registration sensor 108 (step S305 / YES). Therefore, the paper feed vertical conveyance door counter in the remaining paper information storage unit 201 is incremented by one,
It is stored in the remaining paper information storage unit 201 (step S308),
The in-machine remaining paper counter in the remaining paper information storage unit 201 is incremented by one.
Then, it is stored in the remaining paper information storage unit 201 (step S31).
0).

Thereafter, it is checked whether or not the paper position information of the recording paper that has not been properly discharged from the machine exists in the recording paper position storage unit 202 and is not stored in the remaining paper information storage unit 201 (step S311). ). Step S311
In the check of (3), if the paper position information of the recording paper does not exist in the recording paper position storage unit 202 (Step S31)
1 / NO), the main controller 204 stores the remaining sheet counter value and the in-machine remaining sheet counter value for each door in the remaining sheet information storage section 201.
, And instructs the operation display unit 205.

Thus, the total number of remaining sheets and the number of recording sheets to be processed when the door is opened are displayed on the operation unit 115, so that the operator can know the number of remaining sheets at the time of jam for each door.

Next, in the check of step S311, if the paper position information of the recording paper (paper position front end position, paper position rear end position) exists in the recording paper position storage unit 202 (step S311 / YES). Then, the leading edge position of the recording paper stored from the recording paper position detection unit 203 of the recording paper via the main control unit 204 is read from the recording paper position storage unit 202 and stored in the remaining paper information storage unit 201 (step S30).
3). Next, similarly, the rear end position of the recording paper is stored in the storage paper position storage unit 2.
02, and stores it in the remaining sheet information storage unit 202 (step S304).

The corresponding door is determined from the recording paper position stored in the recording paper information storage unit 201 (step S30).
5, step S307), and increments the remaining sheet counter of the corresponding door by one (step S306, step S308, step S309). After that, the remaining paper information storage unit 201
The remaining paper counter in the machine is incremented by one, and the remaining paper information storage unit 2
01 (step S310) and step S311
The paper position of the recording paper that has not been properly ejected from the inside of the apparatus is determined by the recording paper position storage unit 202 in the recording paper position storage unit 202.
The processing is repeated until the information does not exist in the file and all the information is stored in the paper information storage unit 201.

Thereafter, the main controller 204 instructs the operation display unit 205 about the remaining sheet counter value and the in-machine remaining sheet counter value for each door in the remaining sheet information storage unit 201. As a result, the total number of remaining sheets and the number of recording sheets to be processed when the door is opened are displayed on the operation unit 115, so that the operator can know the number of remaining sheets at the time of the jam for each door to be jammed. Thereafter, when the door is opened (step S401), it is determined which door has been opened (step S402, step S404), and a counter corresponding to each door is instructed to the operation display unit 205 and displayed (step S403, step S403). S405, step S4
06).

Thus, it is possible to see at a glance how many sheets of jam paper must be removed by the door opened at the time of jam removal. Further, when the wrong door is opened, there is no need to worry because there is no jammed paper, and the display counter becomes 0, so that the user can immediately notice that the wrong door has been opened, so that the working efficiency is not reduced.

[0029]

As is apparent from the above description, according to the present invention, when a jam occurs, how many recording papers are present in the machine and how many recording papers must be removed at the time of jam clearance. The number of sheets for each opened door can be displayed on the operation unit to notify the operator himself. This avoids repetition of jam removal work, increases jam removal efficiency,
Do not reduce the efficiency of the work.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a schematic configuration of a copying machine that is an image forming apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a schematic configuration of a control system of a copying machine which is an image forming apparatus according to an embodiment of the present invention.

FIG. 3 is a first flowchart illustrating an operation when a jam occurs in a copying machine which is an image forming apparatus according to an embodiment of the present invention.

FIG. 4 is a second flowchart illustrating an operation of the copying machine as the image forming apparatus according to the embodiment of the present invention when a jam occurs.

[Explanation of symbols]

 201 remaining paper information storage unit 202 recording paper position storage unit 203 recording paper position detection unit 204 main control unit 205 operation display unit 206 image processing unit 207 paper feeding unit

Claims (6)

[Claims] A recording paper position detecting means for detecting a position where the recording paper exists; and a counter value of 1 for each detected position when the recording paper position is detected by the recording paper position detecting means. Remaining paper information storage means for adding and storing; and display means for displaying a counter value added by the remaining paper information storage means for each position detected by the recording paper position detection means. Image forming apparatus. 2. A recording paper position detecting means for detecting a position where a recording paper is present, and a first value which is added to a counter value and stored each time the position of the recording paper is detected by the recording position detecting means. A remaining sheet information storage unit that, when the position of the recording sheet is detected by the recording sheet position detection unit, increments a counter value by one for each detected position and stores the result; The counter value added by the first remaining sheet information storage means and the counter value added for each position detected by the recording sheet position detection means by the second remaining sheet information storage means are displayed. An image forming apparatus comprising: a display unit. 3. The recording paper position detecting means according to claim 1, wherein said recording paper position detecting means includes a plurality of sensors provided according to a position of a door from which a remaining recording paper can be taken out by an operator. Or the image forming apparatus according to 2. 4. A recording paper leading edge detecting means for detecting the leading edge position of the recording paper when the leading edge of the recording paper passes, and detecting the passage of the trailing edge of the recording paper when the trailing edge of the recording paper passes. Recording paper trailing edge detecting means, and the recording paper trailing edge position detected by the recording paper trailing edge detecting means and the recording paper trailing edge position detected by the recording paper trailing edge detecting means. Recording paper position detecting means for detecting a position where paper is present; recording paper position storing means for storing the detected recording paper position; a door capable of discharging the recording paper from the stored recording paper position A discharge door specifying means for specifying a value, and a counter value is added and stored every time the position of the recording paper is detected by the recording position detecting means, and the stored recording paper position is deleted from the recording position storage means. A first remaining paper information storage means for performing A second remaining sheet information storage unit that adds 1 to a counter value corresponding to the door specified by the discharge door specifying unit and stores the same; and whether a recording paper position is still stored in the recording paper position detection unit. And a counter value added by the first remaining sheet information storage means and the second remaining sheet when the determining section determines that the recording sheet position is not stored. Display means for displaying a counter value added corresponding to the door detected by the recording paper position detection means in the information storage means. 5. When the determination means determines that there is still a recording paper position stored in the recording paper position storage means, the first remaining paper information storage means stores the recording paper position in the recording paper position storage means. 5. The image forming apparatus according to claim 4, wherein a counter value corresponding to the door specified from the recording paper position is incremented by one and stored. 6. The recording paper leading edge detecting means and the recording paper trailing edge detecting means include a plurality of sensors provided in accordance with a position of a door from which a remaining recording paper can be taken out by an operator. The image forming apparatus according to claim 4, wherein: