JPH0466960A - Image forming device - Google Patents

Abstract

PURPOSE:To prevent the danger of the image forming device from sliding off a mounting stand by providing an engagement part for fixing where a restraining part of a restraining device is engaged in one part of the device main body. CONSTITUTION:A laser printer 20 is installed on an uppermost rack of top plate 25a of a rack 25, a chamfer part 32 is provided on a bottom part of the printer 20, and one edge of the restraining device 50 is engaged to it. The restraining device 50 is of U-shape, its top side 51 is inserted to the before mentioned chamfer part 32 and positioned below a tapped hole 53 of a bottom side 52 and the top plate 25a, and fixing of the printer 20 to the top plate 25a is carried out by turning a screw 54 screwed into this tapped hole, having the abutting plate 55 pressurized to the lower side of the top plate.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming apparatus such as a copying machine, a facsimile machine, and a printer.

[Conventional technology]

In offices with large floor space, image forming devices such as copiers, fax machines, printers, etc. are placed on desks or dedicated stands, but in small offices, equipment is placed on racks in multiple tiers in order to make effective use of space. Increasingly, it is equipped with In particular, printers tend to be placed on the top plate of a rack due to their nature, so when the rack is moved or an earthquake occurs, there is a risk that the equipment may slip on the top plate and fall from the rack. Also, some printers have a wide opening to remove jammed paper or replace consumables, and if the printer is opened too vigorously, there is a great risk that the printer will slip and fall due to the reaction. .

On the other hand, an electrophotographic device has already been proposed that has a handle for hanging the main body of the device on a wall and legs for holding it in a stable state by contacting the wall (Japanese Patent Publication No. 63-1353).
Publication No. 2).

[Problem that the invention seeks to solve]

The above proposal cannot be applied to a heavy device or an image forming device in which a part of the device can be opened for replacing consumables. Furthermore, it is difficult to adopt the above proposal even when the device is placed on an installation stand such as a rack.

An object of the present invention is to eliminate the above-mentioned fear and danger when placing an image forming apparatus on an installation stand.

[Means to solve the problem]

According to the present invention, the above problem is solved by providing, in a part of the main body of the apparatus, a fixing engaging part that engages with a locking part of a locking tool for attaching one image forming apparatus to an installation stand.

Furthermore, in order to solve the above-mentioned problems, the present invention proposes to use a carrying handle of an image forming apparatus as a fixing engagement part.

[For production]

According to the present invention, one image forming apparatus is prevented from slipping on the installation stand, and therefore there is no danger of it falling from the installation stand.

〔Example〕

In the laser printer 20 shown in FIG.
The transfer paper 2 fed in the direction of arrow A is conveyed to a latent image carrier consisting of a belt-shaped photoreceptor 4 at a timing determined by a pair of registration rollers 3 . Photoreceptor belt 4
travels clockwise, and its surface is charged by the charging charger 5. Then, it is irradiated with laser light from the laser unit 6, and an electrostatic latent image is formed on the photoreceptor.

This latent image is made visible by toner when passing through the developing device 7, and a toner image is formed. This toner image is transferred to the transfer paper 2 conveyed to the photoreceptor belt 4 under the action of the transfer charger 8, and the transfer paper 2 after transfer is separated by the curvature of the photoreceptor 4. Thereafter, the toner image is fixed on the transfer paper 2 by the fixing device 9, and then the transfer paper 2 passes through the first paper discharge roller 10.11.

The transfer paper 2 that has passed through the first paper ejection roller 10.11 is either ejected in the direction of arrow C with the image side facing up according to the direction switching of the switching claw 12, or is ejected in the direction of the arrow C with the image side facing up, or the transfer paper 2 is ejected from the paper conveyance guide 22.
The paper passes through the reversing conveyance path 13 constituted by 24, and is discharged with the image side facing down in the direction B via the second paper discharge rollers 14, 15 to the paper discharge tray 16 on the printer 20.

On the other hand, the photoreceptor belt 4 after transfer is cleaned by a cleaning device 17.
Therefore, the residual toner is removed, and the residual charge is removed by the charge eliminating lamp 18, and the sheet is prepared for the first printing.

The printer 20 has an upper frame 30 and a lower frame 40.
Inside the upper frame 30, the above-mentioned laser unit 6, static elimination lamp 18, charger 5, etc. are provided. Further, the upper frame 30 removably supports the photoreceptor 4 and the cleaning device 17 at its lower part. This upper frame 30 uses the rotation pin 21 as a common support shaft with the lower frame 40, and the main cover 31
The lower frame 40 is configured to be able to be opened and closed integrally with the lower frame 40 as shown in FIG. In this case, the rotation pin 21
is arranged on the back side of the printer main body, and the front side of the upper frame 30 is opened and closed.

Further, when the upper frame 30 is opened as shown in FIG. 2, a circuit of an internal safety switch (not shown) is opened, and at least the circuits of the drive motor and the high voltage section are turned off. Reference numeral 26 denotes an operation display unit, which is rotatable around the shaft 21.

33 is a rubber ring or plastic foot arranged on the lower frame 40, and 34 is a paper feeding tray that stores the transfer paper 2.

As shown in FIG. 3, the laser printer 20 is mounted on a rack 25.
As already mentioned, if the printer is installed on the top plate 25a of the printer, there is a risk that the printer will fall when the printer is moved by rank or in the event of an earthquake.

26 is a display, 27 is a memory, 28 is a keyboard, and 29 is an operator. laser printer 2
0 is installed as shown in FIG. 3, the operation display unit 26 is rotated around the axis 21 so that the display surface of the unit faces downward. This makes it easier for the operator to check the display contents and operate the switches while sitting. In accordance with the present invention, the laser printer 20 includes a locking device 50.
is fixed to the top plate 25a of the rack 25.

The details will be explained with reference to FIGS. 4 to 7.

In FIG. 4, the laser printer 20 is installed on the top plate 25a of the rack 25, and the bottom of the printer 20 is provided with a notch 32, into which one end of the locking tool 50 is locked. Ru. The cutout portions 32 are provided on both sides of the printer 20, and the locking tools 50 are also locked in the cutout portions 32 on both sides as shown. The paper feed tray 34 is inserted and removed in the direction of arrow a. The cutout portion 32 is provided at a location where there is no problem in inserting and removing the paper feed tray.

In FIG. 5, a leg portion 42 is welded to a bottom plate 41 of the printer main body, and a foot 33 is further fixed to this leg portion 42. As shown in FIG. 43 is a cover, and this cover and the leg portion 42 are provided with the notch portion 32 described above. 44 is cover 43
This is a protrusion provided on the printer, which is used as a grip when transporting the printer.

The locking tool 50 has a U-shape, and its upper side 51 is inserted into the notch 32, and its lower side 52 is provided with a punching hole 53 and is located below the top plate 25a, and is screwed into this screw hole. The printer 20 is fixed to the top plate 25a by turning the screw 54 and pressing the backing plate 55 toward the lower side of the top plate.

6 and 7, a handle 45 is welded to the legs 42 at the bottom of the printer 20 and extends horizontally outwardly. The upper side 51 of the locking tool 50 locks onto the upper side of this handle 45. Other points are the same as the embodiments shown in FIGS. 4 and 5.

The above-mentioned handle 45 is shaped so that the fingers of the hand do not slip during transportation, and so that the installation phase is not interrupted. This handle can also be stored in a sliding or folding manner at the bottom of the printer.

〔Effect of the invention〕

The present invention can reliably prevent an image forming apparatus mounted on a desk or rack from slipping or falling due to slipping.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of a laser printer as an image forming apparatus to which the present invention is applied, Fig. 2 is an open view of its upper frame, and Fig. 3 shows the laser printer installed at the top of a rack. FIG. 4 is a perspective view of a laser printer according to the present invention located at the top of the rack, FIG. 5 is a partial sectional view taken along the α-α line in FIG. 4, and FIG. A perspective view of the embodiment, and FIG. 7 is a partial sectional view taken along the β-β line in FIG. 6. 20... Laser printer 25... Rack 25a... Top plate 32... Notch portion 50... Locking tool 54... Screw male light p

Claims (3)

[Claims] (1) An image forming apparatus characterized in that a part of the main body of the apparatus is provided with a fixing engagement part that engages with a locking part of a locking tool for attaching the image forming apparatus to an installation stand. (2) A fixing engagement part that engages with a latching part of a latching tool for attaching the image forming apparatus, which is divided into an upper frame and a lower frame, and the upper frame can be opened from the lower frame, to the installation stand. An image forming apparatus characterized in that it is provided on a lower frame side. (3) The image forming apparatus according to claim 1 or 2, wherein a carrying handle of the image forming apparatus is used as the fixing engagement part.