JPH055744U - Image forming device - Google Patents

Abstract

(57) [Summary] [Purpose] The recording paper discharge unit of the image forming apparatus is configured to be capable of discharging even large-sized recording paper, and various sizes can be used. [Structure] Upper lid of paper feed cassette 3 provided in the image forming apparatus
The large-sized recording paper P can also be discharged by providing the slidable outside 48 and the auxiliary discharge tray 51 at one end of the upper lid 48 so as to be openable and closable.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a recording device, an image forming device, etc., in which a sheet feeding device provided in the image forming device. The present invention relates to a device that uses a part of an upper lid of a cassette as a discharge tray.

[0002]

[Prior art]

  A recording device, an image forming layer device, etc., feeds recording paper from a paper feed cassette After transferring the formed image to the recording paper, the recording paper is discharged to the outside of the apparatus.

[0003]   In general, a special paper tray is provided to facilitate smooth paper ejection. If the paper tray and the paper ejection tray are separately provided, the paper feed cassette and the paper ejection tray are provided outside the apparatus. There was a drawback that the plate protruded and required a large installation area. Therefore, this drawback is remedied As a method of rotating the recording paper, the recording paper is turned upside down with respect to the paper feeding direction, and There is also a method of reducing the layout area by using the upper lid provided on the ing. However, the discharge tray of the upper lid discharges normal size recording paper such as A4. However, large-sized recording paper that uses the full width of the paper cassette However, there is a disadvantage that the recording paper will fly out to the outside in the paper tray using the top lid. Even if the miniaturization was solved, there was a practical problem.

[0004]

[Problems to be solved by the device]

  This is a device specifically designed to eliminate the above-mentioned drawbacks of the present invention. That is, the image With a paper feed cassette provided in the image forming apparatus, etc., open it at one end of the upper lid provided in the paper feed cassette. Large-sized recording paper can also be discharged by providing an auxiliary discharge tray that can be closed. Thus, the above-mentioned drawbacks are solved.

[0005]

[Means for Solving the Problems]

  In order to solve the above problems, the present invention provides an image forming apparatus having a sheet feeding cassette. In addition, the lid member provided in the upper opening of the sheet feeding cassette and the sheet feeding cassette A paper discharge tray that can be opened and closed is provided at the portion of the lid member of the tray protruding from the image forming apparatus. The problem was solved by configuring the image forming apparatus characterized by the above.

[0006]

【Example】

  FIG. 1 shows the construction of an embodiment of the image forming apparatus of the present invention. . Hereinafter, description will be given with reference to the drawings.

[0007]   In FIG. 1, reference numeral 1 is a lower frame of the image forming apparatus, and a recording paper P is placed in the lower frame 1. A sheet feeding cassette provided with a half-moon shaped sheet feeding roller 2 for feeding a plurality of recording sheets P. The cover 3 is detachably provided on the lower frame 1. In the paper cassette 3, A push-up plate 4 that is pushed up by a pulling 5 is provided, and the recording paper P is placed on it. Then, the separation claw 6 rotatably provided on a part of the paper feed cassette 3 is provided at the uppermost end of the recording paper P. Lock on. 7 is a guide plate for guiding both sides of the recording paper P and is adjusted according to the size of the recording paper. It is possible. The above configuration is provided in the paper feed cassette 3. 8 is The recording roller P is provided on the lower frame 1 and is used to feed the recording paper P, and the paper feeding roller 2 feeds the recording paper P. It is provided between a guide plate 9 for guiding the leading edge of the recording paper P and a reverse guide plate 10.

Reference numeral 11 denotes a guide plate for guiding the recording paper P to the registration roller 12 after the recording paper P is reversed and fed, and guides the recording paper P to the registration roller 12. Reference numeral 13 is a rocking member for turning on and off a sensor S ₁ for detecting the recording paper P at the position of the registration roller 12. Reference numeral 14 is a guide plate that guides the recording paper P that has passed through the registration roller 12 toward the transfer belt 15, and the transfer belt 15 is suspended by a transfer roller 16, a roller 17 and a drive roller 18. Reference numeral 15a is a cleaning means for cleaning the surface of the transfer belt 15. Reference numeral 19 denotes a fixing device for fixing the image transferred on the recording paper P, which comprises a fixing heating roller 20 and a pressure roller 21, and a cleaning roller 20a is brought into pressure contact with the fixing heating roller 20 and rotates in accordance with the rotation. To clean. Reference numeral 22 denotes a paper discharge roller for discharging the recording paper P from the fixing device 19. The swinging member 23 for turning on and off the sensor S ₂ for confirming the discharge of the recording paper P is operated by the recording paper at the time of paper discharge. The discharged recording paper P is recorded on a recording paper guide member 24, a guide passage 25 formed in the upper frame 1c, and guide conveying rollers 26, 27 on a paper discharge tray 28 provided above the upper frame 1c. The paper P is configured to be discharged. Next, a photoconductor drum 29 for image formation is provided in the substantially central portion of the upper frame 1c, and four developing devices 30, 31, 32, 33 are arranged along the surface of the photoconductor drum 29 from the top. It is a developing device frame 30a which can be installed, and the developing device frame 30a has four sets of developing devices 30, 31, 32 and 33 independently as shown in FIG. A gear (not shown) that is operated by A polygon mirror 34 reflects the laser light emitted from the laser light source 35 by reflecting mirrors 36, 37 and 38 to expose the photosensitive drum 29. Reference numeral 39 denotes an optical system frame body integrally incorporating optical systems such as the polygon mirror 34 and the reflection mirrors 36, 37, 38, etc., which is incorporated in the uppermost part of the upper frame body 1c.

[0009]   Reference numeral 40 is a charging electrode for charging the entire surface of the photosensitive drum 29, which is provided on a part of the upper frame 1c. It is provided. Reference numeral 41 denotes a photoconductor drum 29 after the image is transferred from the photoconductor drum 29 to the recording paper P. Use a cleaning blade to clean the residual developer adhering to the surface of the ram 29. A transport device 43 for discharging the cleaned developer to the outside is provided. The developer scraped off by the cleaning blade is efficiently sent to the transport device 43. The agent receiving member 42 is provided below the cleaning blade 41. Externally by the transport device 43 The conveyed developer is conveyed to the container 44 by the conveyor 45 and stored in the container 44 to an appropriate amount. It is designed so that it can be stacked and can be removed and discarded. 46 is the developing device 30,3 1, 32, and 33 are developer containers for supplying developer, respectively. There are only four sets, but four sets are provided side by side, and the developing devices 30, 31, 32, 33 are provided with, for example, cyan, Magenta, yellow, and black color developers are supplied so that color development can be performed. Is made. Reference numeral 47 is a manual tray which can manually feed the recording paper P. The lower frame 1 and the upper frame 1c are assembled so that the conveyance path of the recording paper P can be opened around the support shaft 1b. The recording paper P is standing up and is in a defective conveyance state while the recording paper P is being fed and conveyed. If both do not reach the fixing device 19, the upper frame 1c is opened centering on the support shaft 1b. The recording paper P can be taken out. In addition, the recording paper P provided on the lower frame 1 can be fed to another paper feeding device. A guide plate 1a that can be supplied from (not shown) is provided.

[0010]   Reference numeral 48 is an upper lid attached to the upper opening of the paper feed cassette 3.

[0011]   As shown in FIG. 1, an auxiliary paper ejection tray 51 is provided on the upper lid 48 so that it can be opened and closed. At a position outside the paper feed cassette 3 provided in the lower frame 1 of the image forming apparatus. It is pivotally attached to the upper lid 48 by a shaft 50. On the other hand, as shown in FIG. A slideable member is provided in the direction of arrow A, and the upper lid 48 has a surface that contacts the paper feed cassette 3. A protrusion 49 is formed on the upper surface of the sheet feeding cassette 3, and a locking portion 3a is also provided on the surface that contacts the upper lid 48 of the sheet feeding cassette 3. The upper opening of the paper feed cassette 3 of the upper lid 48 toward the outside, and slide it in the direction of arrow A. When the lid is pulled, the protrusion 49 of the upper lid 48 and the locking portion 3a of the paper feed cassette 3 abut against each other. Then, the upper lid 48 stops at a constant withdrawal length. In this state, the upper lid 48 of the paper feed cassette 3 Only the one slides out and is ready to be used as a paper ejection tray. As described above, the auxiliary paper discharge tray 51 is opened around the shaft 50. At that time, the lock provided on the upper lid 48 A part of the auxiliary paper ejection tray is locked to the portion 48A, and the large paper ejection tray is Ray is formed.

[0012]   As an embodiment of the present invention, the recording paper P loaded in the paper feed cassette 3 is fed to the paper feed roller 2 After the recording paper P is fed by the feeding roller 8 and the registration roller 12 by , The visible image of the toner developed by the developing device 30, 31, 32, 33 is recorded on the photosensitive drum 29. The toner is transferred to the recording paper P by the transfer belt 15, and the toner is transferred to the recording paper P by the fixing heating roller 20. Fix the visible image of the FIG. 1 shows the upper frame of the image forming apparatus by the recording paper guide member 22. The recording paper P is discharged to the discharge tray 28 of 1c. By switching the guide member 22, paper is discharged toward the upper lid 48 and the auxiliary paper discharge tray 51.

[0013]   In addition, as shown in FIG. 2, in the case of discharging in the direction of the upper lid 48 and the auxiliary discharge tray 51, As described above, the auxiliary lid tray 51 is slid and pulled out in the direction of the arrow A to draw out the auxiliary discharge tray 51. It goes without saying that the paper is discharged after opening the paper.

[0014]

[Effect of device]

  INDUSTRIAL APPLICABILITY As described above, the present invention is applied to a recording paper ejecting device such as a recording device or an image forming device. For example, in the case of a normal size paper such as A4, put it in the paper discharge tray provided in the image forming apparatus. When ejecting large size paper such as A3, the upper lid 48 of the paper feed cassette 3 is Large size recording by simply opening the auxiliary paper ejection tray 51 provided on the upper lid 48 There is an effect that the paper P can be discharged safely.

[Brief description of drawings]

FIG. 1 is an overall vertical cross-sectional view of an image forming apparatus in which an auxiliary paper discharge tray according to the present invention is implemented.

FIG. 2 is a longitudinal sectional view of a part of the image forming apparatus in which the auxiliary sheet discharge tray according to the present invention is in use.

[Explanation of symbols]

1 Lower frame 1c Upper frame 2 paper feed rollers 3 paper cassettes 7,9,10,11,14 Guide plate 12 Registration roller 15 Transfer belt 20 Fixing heating roller 20a Cleaning roller 28 Output tray 29 photoconductor drum 30,31,32,33 Developing device 30a Developing device frame 34 polygon mirror 48 Top cover 48A locking part 49 protrusions 51 Auxiliary output tray

Claims (2)

[Scope of utility model registration request] 1. An image forming apparatus having a sheet feeding cassette, wherein a lid member provided at an upper opening of the sheet feeding cassette and a portion of the lid member of the sheet feeding cassette protruding from the image forming apparatus. An image forming apparatus comprising a paper discharge tray that can be opened and closed. 2. The image forming apparatus according to claim 1, wherein the lid member of the paper feeding cassette is slidably provided.