JP2706436B2 - Recording device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus such as an electrophotographic copying machine, a printer, and a facsimile. In particular, the sheet on which the recording has been performed is discharged with the recording surface facing down to a tray portion formed on the upper main body cover of the main body cover, and expandable electric components are attached inside the upper main body cover. The present invention relates to a recording device provided with an electric circuit board. 2. Description of the Related Art In the above-mentioned recording apparatus, for example, a printer, a well-known electrophotographic process such as a Carlson process is executed by a controller provided on the electric circuit board. In this case, recent printers are required to have multiple functions, and it is no longer sufficient if a single electrophotographic process can always be executed. In order to achieve such multi-function, the main part of the controller must be changed as necessary. When making such a change, in the conventional printer, all of the electric circuit boards are taken out of the printer and the necessary parts are changed. However, this operation is very complicated, and at the time of the operation. It is difficult to secure the shielding properties. SUMMARY OF THE INVENTION An object of the present invention is to make it possible to easily change the main parts of an electric circuit board while securing the shielding property, and to achieve many functions with a simple operation. It is to provide a recording device. According to the present invention, there is provided a recording apparatus of the type initially described according to the present invention, wherein a chassis in which an electric circuit board functions as a shield case, a chassis cover, and the electric component are provided. An opening and closing member that is covered with a chassis door that opens and closes an opening disposed in a chassis cover portion facing the chassis door, and further has an opening in a portion of the main body cover that faces the chassis door, and that opens and closes the opening. It is solved by having provided. Hereinafter, the present invention will be described with reference to embodiments shown in the drawings. FIG. 1 is a side sectional view of a printer according to one embodiment. In the figure, this printer is divided into an upper unit 20 and a lower unit 1. Around the drum-shaped photoconductor 2 disposed in the lower unit 1, a charging and cleaning unit 3, a developing device 4, a toner cartridge 4-1, an optical device 21, and a transfer device 7 are provided. [0007] A paper container 5 arranged on the right side of the lower unit 1
When the bottom plate 51 in the container 50 is pushed up by the lever 60, the recording paper P stored in the container 0 is lifted upward, comes into contact with the paper feed roller 5, and is sent out by the rotation of the paper feed roller 5. . Reference numeral 61 denotes a rotation center of the lever 60, and reference numeral 62 denotes a recording paper separating device provided with a friction pad. The recording paper P sent out by the paper feed roller 5 is conveyed between the photoconductor 2 and the transfer device 7 via the registration switch SW1 and the registration roller 6. [0008] During the conveyance process of the recording paper P, the surface of the photoreceptor 2 is uniformly charged by the charging unit 3, the image is exposed by the optical device 21, and the electrostatic latent image corresponding to the image is formed on the surface. An image is formed, and the electrostatic latent image is further developed (visualized) by undergoing a developing operation by the developing device 4. The above visible image formed on the photoreceptor 2 is
The sheet P is superimposed on the recording sheet P sent between the photoconductor 2 and the transfer unit 7 and is transferred onto the recording sheet P under the action of the discharge of the transfer unit 7. After that, the recording paper P is discharged in the A direction or the B direction selected by the switching lever 100 via the fixing device 8, the switch SW2, and the discharge roller 9. The recording paper P discharged in the B direction is stacked on a paper discharge tray T. Recording paper P discharged in direction A
The paper is turned over and discharged on a reverse paper discharge tray 25-2 formed on the upper main body cover of the main body cover 25. 25
Reference numerals -1 and 26 denote guide members for the recording paper P, and 27 denotes a discharge roller. The upper unit 20 is covered with a main body cover 25, and a frame 24 as a structural member is housed inside the main body cover 25. In the frame 24, in addition to the optical device 21, a power supply device 23 and the like are housed. A chassis 30 is mounted on an upper portion of the frame 24, and a printed circuit board (electric circuit board) is provided inside the chassis 30.
22 are stored. The printed board 22 includes a driver board 22-1 for controlling the operation of the printer and a controller board 22-2. The controller board 22-2 is connected to a not-shown host computer (for example, a personal computer), and based on character information sent from the host computer,
The drive of the optical device 21 is controlled. The recording paper discharged to the reverse discharge tray 25-2 as indicated by an arrow A in FIG. 1 is placed on the reverse discharge tray 25-2 as indicated by P 'in FIG. The opening / closing member 28 is detachably attached to the main body cover 25 as described later. A step D is provided between the opening / closing member 28 and the upper surface of the main body cover 25, and the opening / closing member 28 is inverted as described above. When taking out the recording paper P 'placed on the paper discharge tray 25-2, a fingertip can be put under the recording paper P', thereby facilitating the removal of the recording paper P '. FIG. 3 shows the chassis 30 mounted on the upper portion of the frame 24 in FIG. 1 in detail. The driver board 22-1 and the controller board 22-2 are housed and fixed in the chassis main body 31. Then, the chassis cover 32 is fixed to the chassis main body 31 from above the substrates 22-1 and 22-2 with several screws. Reference numeral 22-3 denotes a printed circuit board, an IC memory, and the like that can be added by the user's selection (hereinafter referred to as a spare board).
It is. The spare board 22-3 is mounted on the controller board 22-2 as needed when the user requests the printer for multi-function. Since the spare board 22-3 is detachable as needed, it is desirable that the spare board 22-3 can be easily handled by the user. Therefore, FIG.
An opening 32-1 slightly larger than the spare board 22-3 is provided at a position of the chassis cover 32 corresponding to the spare board 22-3. The opening 32-1 is closed by the chassis door 33. FIG. 6 shows the closed state. Positioning hole 32- of chassis 32
2 is fitted with one end 33-1 of the chassis door 33, and a leaf spring 33-2 is attached to the opening 32 of the chassis cover 32.
-1 is fitted into the bent portion 32-3 provided around the -1. The leaf spring 33-2 may be riveted or welded to the chassis door 33, or may be integrally formed of the same member as the chassis door 33. The chassis body 31, the chassis cover 32, and the chassis door 33 are made of an iron plate or an aluminum plate or the like.
Electromagnetic waves are shielded by covering -1, 22-2, 22-3 and the like. In addition, the chassis main body 31 is provided with a hole for drawing an electric wire therein as appropriate. As shown in FIGS. 4 and 5, an opening 2 is formed in a portion of the upper body cover corresponding to an upper portion of the chassis door 33.
5-3 are provided. The cover opening 25-3 is closed by the opening / closing member 28. Hooks 28-1 and 28-2 are formed on the opening / closing member 28, and these hooks fit into the edge of the opening 25-3 of the upper main body cover, so that the opening / closing member 28 is attached to the upper main body cover. Can be When the user needs to extend the function,
To add -3, the opening / closing member 28 is first removed from the upper body cover of the body cover 25. The opening and closing member 28 can be removed by inserting a coin or the like into the groove 28-3 shown in FIGS. Next, when the leaf spring 33-2 of the chassis door 33 is pinched and pulled up, the chassis door 3
3 is removed from the chassis 30. Thus, the spare substrate 22
-3 is opened to the outside through the opening 25-3 of the upper main body cover. Therefore, the user can use the entire body cover 25 and further the driver board 22-1.
The spare board 22-3 can be easily mounted at a predetermined position without taking out the entire electric circuit board. In the above-described embodiment, the opening / closing member 28 is attached to a portion that is recessed from the surface of the main body cover 25 with a step D (a concave portion for facilitating removal of the recording paper P ′). However, each substrate 22-
In some cases, the opening / closing member 28 and the chassis door 33 may not be provided in the above-mentioned recessed portion due to the arrangement of the components 1, 22, and 22-3. In this case, the reverse discharge tray 25-
The top of the opening / closing member 28 is slightly lower than the upper surface of the inverted sheet discharge tray 25-2 and the upper surfaces of the other main body covers 25, for example, so that the leading end of the recording paper P ′ discharged to the tray 2 does not catch on the opening / closing member 28. Good. According to the present invention, it is possible to extremely easily change an electric component such as a spare board placed on a main part of an electric circuit board while securing the shielding property.

[Brief description of the drawings] FIG. 1 is a cross-sectional view of a printer according to an embodiment. FIG. 2 is an overall perspective view of the printer. FIG. 3 is an exploded perspective view of the electrical component chassis 30. FIG. 4 is an exploded perspective view of a main part of the upper unit 20. FIG. 5 is an enlarged sectional view of a main part of FIG. FIG. 6 is an enlarged sectional view of a main part of FIG. 5; [Explanation of symbols] P sheet (recording paper) 22-1, 22-2 Electric circuit board 22-3 Spare board (electric component) 25 Body cover 25-2 Tray Unit (Reversed Output Tray) 25-3 Opening 28 Opening / closing member 30 chassis 32 chassis cover 32-1 opening 33 Chassis door

Continuation of front page    (56) References JP-A-60-263958 (JP, A)                 JP-A-61-32865 (JP, A)                 62-35353 (JP, U)                 Showa 55-155249 (JP, U)                 Shokai Sho 61-158984 (JP, U)                 Shokai Sho 61-201055 (JP, U)                 62-8259 (JP, U)                 Shokai Sho 61-182546 (JP, U)                 62-186159 (JP, U)                 Tokiko Hei 7-89261 (JP, B2)

Claims (1)

(57) [Claims] (1) The sheet on which recording has been performed is discharged to a tray portion formed on the upper main body cover of the main body cover with the recording surface facing down, and the sheet is placed inside the upper main body cover. In a recording apparatus provided with an electric circuit board to which expandable electric parts are attached, the electric circuit board is disposed on a chassis functioning as a shield case, a chassis cover, and a chassis cover portion facing the electric parts. It is covered with a chassis door that opens and closes the opening, and another opening is provided in a portion of the main body cover facing the chassis door, and an opening and closing member that closes and opens this opening is provided. Recording device.