JPH03120140A - Picture forming device - Google Patents

Abstract

PURPOSE:To obtain the simplification and the highness of efficiency in jam processing work by connecting a case open-close mechanism to a cover open- close mechanism through an interruptably interlocking mechanism. CONSTITUTION:First in the case of detecting a paper jam in a transcription part 12 by a signal from an actuator 18, a clamshell 17, which serves for a location to be operated, is displayed, and a clutch 24 is placed in an off- condition. As a result, only the clamshell 17 is opened. Next in the case of detecting a paper jam in the inside of the transcription part 12 and a feed part 10 being based on signals from the actuators 18, 15, the clamshell 17, serving as a location to be operated, is displayed, and the clutch 24 is turned on. As a result, by opening the clamshell 17, a cover 9 is opened with the clamshell 17.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to an image forming apparatus such as a laser beam printer or a copying machine, and more particularly, to an image forming apparatus having a structure that allows easy removal of jammed transfer paper within the apparatus. .

[Prior art]

Conventionally, copying machines have, for example, multiple paper feed cassettes (
If the transfer paper is provided with a paper feed section, the transport path for the transfer paper will inevitably be long (and the probability of paper jams will also be high). A copying machine has been proposed that is equipped with a cover so that paper jams can be easily cleared in the conveyance path. This problem is not limited to the conveyance path as described above, but can also occur in the feeding section and the transfer section.In this case, in the conventional copying machine as mentioned above, the paper According to the location where the jam occurs, each part of the copying machine main body and the transport path cover must be opened individually to clear the jam, which is a troublesome task for the operator.Therefore, the present invention is aimed at. The transfer paper transport path is divided into sections that can be opened and closed so that each section can be selectively opened depending on the occurrence of paper jams, thereby simplifying and increasing the efficiency of jam removal work. [Means for Solving the Problems] In order to achieve the above object, the main means adopted by the present invention is to provide an image forming apparatus that is housed in a paper feed section. In an image forming apparatus, the transfer paper is fed through a conveyance path and a feeding section covered with an openable/closable cover, and then to a transfer section covered with an openable/closable casing with the conveyance path as a border, wherein the above-mentioned casing The opening/closing mechanism of the cover is connected to the opening/closing mechanism of the cover through an intermittent interlocking mechanism, and the parts to be operated are displayed according to the state of paper jams on the transfer section, the feeding section, and the conveyance path. and the above-mentioned interlocking mechanism is turned on and off as appropriate to enable the above-mentioned housing and/or the above-mentioned cover to be opened in conjunction with each other or independently. [Example] Referring to the attached drawings below. Examples embodying the present invention will now be described to provide an understanding of the present invention.The following examples are examples embodying the present invention, and have the character of limiting the technical scope of the present invention. Here, FIG. 1 is a schematic configuration diagram of an image forming apparatus according to an embodiment of the present invention, and FIG. 2 is an example of the operation status of each part in the image forming apparatus according to the state of occurrence of a paper jam. Fig. 13 is a diagram corresponding to Fig. 1, and Fig. 13 is a chart showing the relationship between the operating states of each part depending on the paper jam pattern. As shown in FIG. 2, a plurality of paper feed cassettes 3.3. ... (paper feed section) is provided, and each paper feed cassette 3 has transfer paper (of different size) (
(not shown) is accommodated. Then, each paper cassette 3
The transfer paper inside is fed into the conveyance path 5 by the rotation of each paper feed roller 4. The transfer paper fed into the transport path 5 is transported toward the copying machine main body 1 by a plurality of transport roller pairs 7 provided within the transport path 5. In the conveyance path 5, there are a plurality of actuators 8.8.
...is provided. Then, the actuator 8
A cover 9 covering the conveying path 5 can be opened and closed together with one of the pair of conveying rollers 7 so that the jam can be easily cleared when a paper jam is detected in the conveying path 5 (see FIG. 2). ). A feeding section 10 communicating with the conveyance path 5 is provided at the lower part of the copying machine main body 1 . A roller l1m is provided at the upper part of the feeding section 10, and the roller 1 constitutes a feed roller pair 11 together with a roller Ils provided on the clamshell 17 (casing) of the copying machine main body 1. . Then, the transfer paper conveyed through the conveyance path 5 is fed to the registration roller pair 13 of the transfer section 12 by the feed roller pair 11 . Further, the feeding section 10 is covered with the cover 9 together with the conveying path 5, and when a paper jam of transfer paper inside the feeding section 10 is detected by an actuator 15, a clam shell 17 (described in detail later) is removed. Then, the cover 9 is opened and jam processing for this feeding section 1G is performed. The feeding section 10 is provided with a solenoid 16 that can engage with the cover 9. Then, the solenoid 16
When turned on, the cover 9 becomes unable to be opened. On the other hand, by turning off the solenoid 16, the engagement with the cover 9 by the solenoid 16 is released,
The cover 9 is now ready to be opened. The transfer section 12 is covered with the taram shell 17 that can be opened and closed across the transport path. Talamusiel 1 above
7 is movable together with one of the rollers constituting the registration roller pair 13 (see FIG. 2), so that when the actuator 18 detects a paper jam of the transfer paper in the transfer section 12, the clamshell By opening 17, jam processing can be easily performed. A gear 19 is attached to the pivot axis of the Taram shell 17, and the gear 19 is connected to a gear 20° double gear 2.
1 and a pinion gear 22 to an arcuate rack 23 provided at the top of the cover 9. A latch 24 (interlocking mechanism) is provided between the double gears 21 and can be disconnected. Therefore, when the clutch 24 is turned on, the cover 9 is also opened as the clamshell 17 is opened. At this time, the solenoid 16 is turned off. On the other hand, when the clutch 24 is turned off, only the taram shell 17 is released. At this time, the solenoid 16 is turned on. Furthermore, in the present embodiment, the transfer section 12 and the feeding section 10 are
A display panel is provided that displays parts to be operated when clearing a jam according to the state of paper jams on the top and conveyance path 5. That is, depending on the state of the output signal from the actuator 1B, 15.8, the clamshell 17. Feeding section 1
0. The cover 9 is configured so that the LEDs indicating each part are lit. Next, the operation of the copying machine having the above configuration will be explained based on FIG. (2) First, when a paper jam in the transfer section 12 is detected based on a signal from the actuator 18, the clamshell 17 is displayed as the part to be operated, and the clutch 24 is turned off. As a result, only the taram shell 17 is opened. (2) When a paper jam inside the transfer section 12 and the feeding section 10 is detected based on the signals from the actuator 18.15, the clamshell 17 is displayed as the part to be operated, and the clutch 24 is turned on. As a result, by opening the clam shell 17, the clam shell 17 can be opened.
At the same time, the cover 9 is opened (see FIG. 2). (2) Based on the signals from the actuator 18.15.8, the transfer unit 12. Feeding section 10. When a paper jam is detected in the conveyance path 5, the Talam shell 1 is the part to be operated.
7 is displayed and the clutch 24 is turned on. the result,
By opening the taram shell 17, the cover 9 is opened together with the clam shell 17. ■, Feeding section 10.11 based on the signal from actuator 15.8! When a paper jam is detected in the feed path 5, the clamshell 17 is displayed as the part to be operated,
Clutch 24 is turned on. As a result, clamshell 1
By opening 7, the cover 9 is opened together with the clamshell 17. (2) When a paper jam in the conveyance path 5 is detected based on a signal from the actuator 8, the cover 9 is displayed as the part to be operated, and the clutch 24 is turned off. As a result, only the cover 9 is opened. ■, feeding section 1 based on the signal from actuator 15;
When a paper jam inside the printer 0 is detected, the taram shell 17 is displayed as the part to be operated, and the clutch 24 is turned on. As a result, the taram shell 17 and cover 9 are opened. Note that if the signal from the actuator 18.15.8 is off and the actuator 8 is not turned on within a predetermined time after paper feeding from the paper feed cassette 3 is started,
It is displayed on the display panel that a paper jam has occurred in the paper feed section. In this embodiment, as described above, the parts to be operated are displayed according to the state of paper jams on the transfer section 12, on the feeding section IO, and on the conveyance path 5, and the clutch 24 is selectively operated as appropriate. Since the taram shell 17 and/or the cover 9 can be opened on/off in conjunction with each other or independently, jam removal work on the transfer paper conveyance path can be carried out extremely easily and efficiently. can. Although this embodiment has been explained using a Taramshiel type copying machine as an example, the mechanism according to the present invention is capable of attaching and detaching the transfer section, fixing section, etc. to the main body of the device in a pull-out manner across the transport path of the transfer paper. The present invention can also be applied to an image forming apparatus having a structure that can be opened and closed. [Effects of the Invention] As described above, the present invention provides a transport path covered with an openable and closable cover and a housing that can be opened and closed across the transport path through the transport path covered with an openable and closable cover. In an image forming apparatus configured to feed paper to a transfer section covered with The parts to be operated are displayed according to the state of paper jams on the top and the conveyance path, and the interlocking mechanism is turned on and off as appropriate so that the casing and/or the cover can be opened in conjunction with each other or independently. Since the image forming apparatus is characterized by this, it is possible to simplify and improve the efficiency of jam removal work.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an image forming apparatus according to an embodiment of the present invention, and FIG. FIG. 3, which corresponds to the figure, is a chart showing the relationship between the operating states of each part depending on the paper jam pattern. [Explanation of symbols] 1...Copying machine main body 3...Paper feeding power center (paper feeding section) 5...Conveyance path 8.15.18...Actuator 9...Cover 10...Feeding Feeding section 12... Transfer section 17... Clamshell (housing) 19.20.
...Gear 21...Double gear 22...Pinion gear 23.
...Rank 24...Clutch (interlocking mechanism)

Claims (1)

[Scope of Claims] 1. Transfer paper stored in the paper feed section passes through a conveyance path covered with an openable and closable cover and a transfer section covered with a casing that can be opened and closed across the conveyance path. In an image forming apparatus configured to feed paper to An image characterized in that the part to be operated is displayed depending on the state of the paper jam, and the interlocking mechanism is turned on and off as appropriate so that the casing and/or the cover can be opened in conjunction with each other or independently. Forming device.