JP2525693Y2 - Image forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an image forming apparatus such as a copying machine, and more particularly to a jam processing thereof.

[Conventional technology]

Conventionally, when a recording paper jam (paper jam) occurs in this type of image forming apparatus, the information is displayed on an operation panel so that the jammed paper can be removed from the image forming apparatus. I have. As a method of displaying the jam information on the operation panel, a method of displaying the jam information on the display unit D of the operation unit of the example of the image forming apparatus shown in FIG. 5-1 as shown in FIG. There is a display lamp or a message display that displays only information indicating that "jam exists".

As an example of the jam processing method, when the display of (jam in zone 1) is lit in FIG. 5-2, the jam processing cover is opened as shown in FIG. The handle (lever) 1 is tilted in the direction of the arrow, and the knob 1a is turned to release the pressure of the conveying roller pair, thereby removing the jammed copy sheet. In the case where the indication of (jam in zone 2) is turned on in FIG. 5-2, as shown in FIG. 5-5, the jam handling handles (lever) 2 are respectively raised in the direction of the arrow to remove the jammed paper. Was configured to remove.

[Problems to be solved by the invention]

However, in the above conventional example, if the image forming apparatus has a simple configuration, this may be sufficient. However, with the trend toward more multifunctional and higher performance, the internal structure of the image forming apparatus accordingly. However, in many cases, the information on the operation panel alone is not sufficient to smoothly perform the jam processing. Further, when a jam occurs between two zones, if the operation order of the jam clearing lever is incorrect, the recording paper may be broken and remain in the conveyance path, and the jam clearing may become more difficult. is there.

The present invention has been made in view of the above-mentioned problems of the conventional example. Even in an image forming apparatus complicated by multifunction and high performance, even if a jam occurs in a plurality of zones, the jam processing can be easily performed. It is another object of the present invention to provide a jam display / processing means that can be implemented reliably.

[Means for solving the problem]

For this reason, according to the present invention, a jam detecting means for detecting a jam of the recording paper at a plurality of positions on the transport path, and a plurality of jams provided near the jam detecting position and operated to remove the jammed recording paper. An operation member, a display provided near each of the plurality of operation members, and, when a jam occurs in a plurality of zones of the transport path, according to a position of the jam detected by the jam detection. ,
Control means for displaying a display corresponding to an operation member to be operated first and a display corresponding to another operation member to be operated so as to be identifiable, by providing an image forming apparatus, It is to achieve the purpose.

[Action]

With the above-described configuration, even in an image forming apparatus having a complicated configuration, and even when a jam occurs in a plurality of zones, the jam processing can be easily and reliably performed.

〔Example〕

 Hereinafter, the present invention will be described based on embodiments.

FIGS. 1-1 to 1-4 and FIGS. 2-1 to 2-2 show respective explanatory views of the first embodiment of the image forming apparatus according to the present invention. FIG. 1-1 is a front perspective view of an example of an image forming apparatus to which the present embodiment can be applied.
FIG. 2 to FIG. 1-4 are enlarged detail views of the portion A in FIG. 1-1 when a jam occurs, and FIG. 2-1 is a diagram when the pressurization of the transport unit is released for jam clearance. Perspective view of main part of the second
FIG. 2 is an enlarged detailed view of the portion B.

(Configuration) In FIG. 1-1, 3 is a toner hopper, 4 is a charger, 5 is a transporter, 17/18 is an upper / lower guide plate for transporting paper, 23 is an opening / closing cover for jam clearance, 24 Indicates a lower transport unit during double-sided recording.

In FIGS. 1-2 to 1-4, which show the operation of the portion A in FIG. 1-1 at the time of occurrence of a jam, reference numeral 8 denotes a portion for releasing the pressure of the conveying roller pair for the purpose of the jam clearance. The handle (jam clearing handle), 9 is an arrow indicating the direction of rotation of the handle 8, 10 is a display lamp arranged inside the arrow 9 at the tip of the handle 8 according to the present invention, and 11 is the indicator lamp. Lamp 10
12 is a drive gear fixed to the rotation center shaft 13 of the handle 8, and 14 is a contact pressurizing and conducting of the contact plates 15 and 16 as rotation detecting means of the handle 8. It is a cam.

Further, in FIG. 2A, reference numeral 25 denotes a process kit containing a photosensitive drum or the like, 26 denotes a developing device, 6 denotes a jam processing knob, 7 denotes a jam processing handle (a pair of rollers for releasing pressure), and 7a. Is an arrow indicating the rotation direction.

(Jam Processing Means) First, a procedure of a jam processing when a jam occurs in the zone 1 shown in FIG. 5-3 will be described. When a jam occurs in the zone 1, the output of the jam detection sensor (not shown) corresponding to the zone 1 is displayed on the display unit D of the operation unit shown in FIGS. 5-1 and 5-2. In this case, zone 1) is displayed. Next, the operator opens the open / close cover 23 shown in FIG. 1-1 for jam clearance. When the cover 23 is opened, the power of the image forming apparatus main body is turned off for safety. The indication of the tip of the jam handling handle 8 (in this case, the handle for releasing the pressurization of the conveying roller pair (not shown) shown in FIGS. 1-2 to 1-4) to be operated for jam handling. The lamp 10 is turned on, which indicates to the operator which jam handling handle should be operated to smoothly perform the jam handling. As a result, the operator rotates the handle 8 in the direction of the arrow 9 to perform jam processing.

Then, after the end of the jam processing, the operator moves the handle 8 to the arrow 9
When the roller pair of the transport unit 5 is pressed again by rotating in the opposite direction, the indicator lamp 10 turns off if the jam processing is completely performed, and if the jam processing is incomplete (jam processing). When the output of the detection sensor is on)
10 remains lit.

Next, the lighting of the display lamp 10 and the rotation of the transport pressure release handle 8 will be described. The indicator lamp 10 is turned on by the output of the jam detection sensor in zone 1, but when the handle 8 is turned in the direction of arrow 9, the handle 8 is turned around the shaft 13, and the drive gear 12, the driven gear (not shown) and the lever Thus, the pressurization in the transport unit 5 is released, and the jam processing is smoothly performed. Further, the cam 14 attached to the center shaft 13 in conjunction with the rotation of the handle 8 separates from the contact plate 16 and
As shown in FIG. 2-2, the rotation of the handle 8 can be detected. At this time, the indicator lamp 10 remains lit, and after the jam has been cleared, when the handle 8 is rotated in the direction opposite to the arrow 9 to press the transport unit, the contacts are connected as shown in FIG. 1-4. If the output of the jam detection sensor is off, the display lamp 10 is turned off. Contact plates 15, 16
May be a commonly used microswitch or the like.

The display lamp wiring (bundled wire) 11 is guided to a power supply or a control unit (not shown) through the vicinity of the rotation center shaft 13 so as not to get caught when the handle 8 or the like is rotated. FIG. 3-1 is a configuration block diagram showing the operation flow. Since the operation flow is clear from the figure, detailed description is omitted.

(Processing Procedure when Jams Occur in Multiple Zones) Next, operations of display lamps and the like when a jam occurs in a plurality of zones shown in FIG. 5-3 will be described.

For example, when a jam occurs in the zone 1 and the zone 2, the jam processing handle 7 shown in FIG. Even if it is kept in the state, it is configured to return in the direction opposite to the arrow 7a by its own weight (details not shown). In this case, clear the jam
If the processing is performed first, after the jam of the zone 2 is cleared, the handle 7 may be left rotating in the direction of the arrow 7a. A conventionally known lamp on / off mechanism (not shown) is provided in the apparatus main body so that the operator can clearly notify the operator of the priority of the jam processing by blinking.

FIG. 3-2 is a configuration block diagram showing an operation flow when the priorities of operations on n zones are assigned, and Table 1 shows a sequence table of a plurality of jam processing.
Table 1 is displayed according to the respective states (ON, OFF) of the jam detection sensor 1, the jam detection sensor 2, the jam processing cover 23 opening / closing detection, the jam processing handle rotation detection 1, and the jam processing handle rotation detection 2. It shows what the display of the lamp 1, the display lamp 2, and the jam / jam processing insufficient display (operation unit) looks like.

As shown in FIGS. 3-1 and 3-2, by flashing each display lamp in response to the opening / closing of the jam processing cover 23 and the output of each jam detection sensor, it is unnecessary. In this case, the lamp is not turned on and the photosensitive layer of the photosensitive member is not adversely affected.

(Second Embodiment) FIGS. 4-1 and 4-2 are main part explanatory diagrams of a second embodiment in which the present invention is applied to jam processing by opening and closing a sheet transport guide plate.

17 is an upper guide plate, 18 is a lower guide plate, 18 and 20 are contact plates, 21 is a rotation center axis of the upper guide plate 17, and 22 is a wiring (bundled wire) for a display lamp (not shown).

In this embodiment, as in the first embodiment, the contacts of the contact plates 19/20 are turned on / off by the opening / closing operation of the guide plate 17, and the lamp blinks. The operations of the jam detection sensor and the display lamp (both not shown) when a jam occurs are the same as in the first embodiment.

(Third Embodiment) In the first and second embodiments, the display lamp is flickered in order to clarify the priority of the jam processing, but a plurality of lamps are provided on the jam processing handles 7, 8 and the like. The priority may be clarified by changing the color of the cover of each lamp.

(Fourth Embodiment) In the first to third embodiments, the lamp wiring 1
The processes 1 and 22 are performed in the vicinity of the center of rotation of the handle 8, the guide plate 17, and the like. However, if the rotation of these handles and the like is 360 °, a so-called slip ring is provided at the center of rotation. ,
If the wiring is connected via this slip ring, the above function can be performed without any trouble.

(Effects of the Invention) As described above, according to the present invention, even when the image forming apparatus jams over a plurality of zones of the recording paper conveyance path, among the plurality of operation members to be operated,
Since it is possible to know which operation should be performed first, it is possible to prevent the occurrence of further trouble during the jam processing, and to easily perform the jam processing.

[Brief description of the drawings]

FIG. 1-1 is a front perspective view of an example of an image forming apparatus to which an embodiment of the present invention can be applied, and FIGS. 1-2, 1-3 and 1-4 show a state in which a jam occurs. FIG. 1-1 is an enlarged detailed view of part A of FIG. 1, FIG. 2-1 is a perspective view of a main part when conveying pressure is released for jam processing, and FIG. B
FIG. 3-1 is a configuration block diagram illustrating a jam processing flow, FIG. 3-2 is a configuration block diagram illustrating a jam processing flow when priorities are assigned, FIG. FIG. 4-2 is an explanatory view of the second embodiment, and FIG.
FIG. 5-2 is an example of a jam display unit, FIG. 5-3 is an example of a jam detection sensor position, FIG. 5-4 and FIG. FIG. 4 is a diagram illustrating an example of a jam processing procedure. 7,8… Jam clear handle 10… Indicator lamp 23… Jam clear cover

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-69663 (JP, A) JP-A-61-12575 (JP, A) JP-A-59-81652 (JP, A) JP-A-2- 52834 (JP, A) JP-A-62-275947 (JP, A) JP-A-60-216356 (JP, A) JP-A-63-233655 (JP, A) JP-A-59-32092 (JP, A) Japanese Utility Model Application Showa 56-96436 (JP, U) JP 6-75220 (JP, B2)

Claims (3)

(57) [Scope of request for utility model registration] 1. A jam detecting means for detecting a jam of a recording sheet at a plurality of positions on a conveyance path; and a plurality of operating members provided near the jam detecting position and operated to remove the jammed recording sheet. A plurality of indicators provided in the vicinity of each of the plurality of operation members, and when a jam occurs in a plurality of zones of the transport path,
According to the position of the jam detected by the jam detection, a plurality of indicators corresponding to the operation member to be operated are displayed, and the indicator corresponding to the operation member to be operated first should be operated for another operation. An image forming apparatus, comprising: a display corresponding to an operation member; 2. The image forming apparatus according to claim 1, wherein said control means blinks a display corresponding to an operation member to be operated first. 3. An image forming apparatus according to claim 2, wherein said control means turns on a display corresponding to another operation member to be operated.