JPH0326521Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a portable electrophotographic device, and particularly to a portable electrophotographic device that prevents developer from spilling from the developing device or cleaning device when being carried around. It is related to the device.

(Prior Art) Conventionally, it has been considered to make an electrophotographic copying device into a portable type that can be carried with one hand, such as an attaché case.

If such a portable type electrophotographic copying device is realized, the user will be able to take the electrophotographic copying device to a desired location and make copies, which will be very convenient for commercial use. In addition, even if it is not for commercial use, if a large company or government office is equipped with fixed electrophotographic copying equipment in only a few locations, it may be necessary to use it one by one every time copies are needed at meetings, etc. It is extremely inconvenient to have to go to the installation location to retrieve copies. However, if a portable electrophotographic copying device is realized, copies can be made at a desired location (for example, a conference room).
This has the effect of shortening the meeting time.

(Problems to be solved by the invention) The above-mentioned conventional techniques had the following problems.

That is, when carrying a portable electrophotographic device, if the copying machine body is tilted, developer from the developing device or cleaning device spills, staining the machine body and contaminating the optical device.

Furthermore, when such contamination occurs, there is a problem in that fog or the like occurs on the copy, impairing the quality of the copy image.

The present invention has been made to solve the above-mentioned problems.

(Means and effects for solving the problem) In order to solve the above problem, the present invention maintains the developer and the cleaning device horizontally when the portable electrophotographic device is carried, so that the developer is It is unique in that it prevents spillage from the developing device and cleaning device.

(Example) The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic perspective view of the main parts of an embodiment of the present invention.

In the figure, reference numeral 2 indicates a housing of the main body of the copying machine, and inside the housing 2, a photosensitive drum 4, a developing device 6, a cleaning device 8, etc. are installed. In addition,
Above the photosensitive drum 4, a platen and an optical system for projecting the image of the document placed on the platen onto the photosensitive drum 4 are arranged in a predetermined positional relationship. A paper conveyance path for conveying the paper fed from the paper feed tray mounting port 10 toward the transfer device, a transfer device, a fixing device, etc. are provided in the height part, but these are the main parts of the present invention. It is omitted from illustration because it is unrelated.

The developing device 6 and the cleaning device 8 are fixed to rotational support shafts 6a and 8a, respectively, and bearing portions 12a and 12b (not shown) and 14a are provided at both open ends of the rotational support shafts 6a and 8a, respectively. and 14b (not shown) are rotatably attached. Further, the bearing portions 12a and 12b, and 14a and 14b are slidably fitted in the bearing guide rails 16a and 16b, and 18a and 18b, which are integrally formed inside the side surface of the housing 2, respectively, in the horizontal direction. ing. Rotation support shaft 6a of bearing parts 12a and 12b
One side in the direction parallel to is connected to one side of springs 20a and 20b, respectively, and the other side is connected to actuation rods 24a and 24b of solenoids 22a and 22b. Similarly, one side of the bearings 14a and 14b in a direction parallel to the rotational support shaft 8a is connected to springs 26a and 26b, respectively, and the other side is connected to actuation rods 30a and 30b of solenoids 28a and 28b. There is.

The other ends of the springs 20a, 20b and 26a, 26b are respectively fixed to the inner wall of the housing 2 as shown. Also,
Solenoids 22a, 22b, 28a and 28b
A switch (not shown) is connected between the handle 32 and a power source (not shown), and this switch is interlocked with the handle 32. In other words, handle 3
When 2 is in the state shown, the switch is on and each solenoid is on. On the other hand, when the handle 32 is rotated 90 degrees counterclockwise from the illustrated position, the switch is turned off.

Next, the structures of the rotation support shaft 6a, the bearing portion 12a, and the bearing guide rail 16a will be explained in more detail with reference to FIG. FIG. 2 shows the rotation support shaft 6a shown in FIG.
A partial sectional view taken through the central axis of the bearing guide rail 16a and perpendicular to the surface of the bearing guide rail 16a.

As shown in the figure, an opening 17 having a width larger than the diameter of the rotation support shaft 6a is provided inside the side wall of the housing 2.
Bearing guide rails 16a, 16a forming part a are fixed together or by means such as adhesive. The bearing guide rails 16a, 16a have a bearing portion 12a slidably housed therein.
These end lines are bent vertically to face each other to prevent them from slipping out of 6a. The opening 17a is formed by this vertically bent opposing portion. Further, the rotation support shaft 6a of the developing device 6 passes through the opening 17a to the bearing portion 12.
It is rotatably supported by a.

Next, FIG. 3 shows a partial cross-sectional view of FIG. 1 taken along a plane perpendicular to the rotating support shaft 6a including the operating rod 24a and the spring 20a. Note that each symbol in the figure indicates the same or equivalent thing as in FIG. 1.

As is clear from FIG. 3, the bearing portion 12a is slid to the left end of the bearing guide rail 16a when the solenoid 22a is turned on (actuated), while when the solenoid 22a is turned off, the bearing portion 12a is slid to the left end of the bearing guide rail 16a.
The bearing guide rail 1 is slid to the right by the force of
Stop at the right end of 6a.

Note that the above description representatively shows the configuration of one supporting portion of the developing device 6 and cleaning device 8, and the configurations of other supporting portions of the developing device 6 and cleaning device 8 may be the same or equivalent. One thing is clear.

Next, the operation of this embodiment will be explained using FIGS. 4, 5, and 6. These figures each show a schematic configuration diagram of this embodiment, with FIG. 4 showing the copying operation, and FIG. 5 showing the handle being moved horizontally in order to transport the copying machine of this embodiment to another location. Fig. 6 shows the case when it is being carried by the handle.

In the figure, 40 is a cover, 42 is a platen,
44 is an optical system, 46 is a transfer device, 48 is a charging corotron, 50 is a fixing device, and other symbols are the same as or equivalent to those in FIG.

In the portable electrophotographic apparatus having such a configuration, the handle 32 is tilted downward as shown in the figure during a copying operation. This allows a power source (e.g. battery) not shown as described above to be used.
and solenoids 22a, 22b, 28a and 28
b is turned on, and power is supplied to these solenoids.

When power is supplied to the solenoid, the bearing portion 12 as shown in FIG. 1 or FIG.
a, 12b, 14a and 14b all receive a force in the approaching direction. Therefore, the developing device 6 and the cleaning device 8 are carried at a position closest to the photosensitive drum 4, and copying becomes possible.

Next, in the first step when the copying operation is finished and the paper is transported to another location, the handle 32 is rotated horizontally as shown in FIG. As a result, the switch is turned off and solenoids 22a, 22a, 28a and 28b are turned off. Then, the suction force of each solenoid disappears, and the bearings 12a, 12b, 14a and 14b are moved by the springs 20a, 20b and 14b, respectively.
It is subjected to tensile forces by 26a and 26b. Therefore, bearing sections 12a and 12b slide to the right in FIG. 1 along bearing guide rail 16a and bearing guide rail 16b, respectively, while bearing sections 14a and 14b slide along bearing guide rail 18a and bearing guide rail 16b, respectively. 18b to the left.

Therefore, the developing device 6 and the cleaning device 8
are each carried in a direction away from the photosensitive drum 4 and held at the position shown in FIG.

Next, in the second stage when the copying machine is carried by the handle 32 by hand to another location, the copying machine is moved from the position shown in FIG. 5 as shown in FIG. Rotate 90 degrees counterclockwise to stand upright.

At this time, the developing device 6 and the cleaning device 8 are designed so that their centers of gravity are located at the bottom, and as described above, the rotational support shafts 6a and 8a are connected to the bearing portion 12.
Since they are rotatably supported by a, 12b and 14a, 14b, the postures of the developing device 6 and the cleaning device 8 do not change and maintain the state shown in FIG.

Therefore, while the copying machine is being transported, the developer (toner) stored in the developing device 6 and the cleaning device 8 will not spill out from these, causing the machine body to become dirty or the optical device to become contaminated. There is no problem that it will be done.

In the portable electrophotographic apparatus of this embodiment, if there is a concern that the developing device 6 and the cleaning device 8 may vibrate due to vibrations etc. during the copying operation (see FIG. 4), the developing device 6 and the cleaning device 8 should be It would be readily conceivable to those skilled in the art to provide anti-vibration means which engage the developer unit 6 and part of the cleaning device 8 only when the device is in the position shown in FIG.

Further, although FIGS. 1 to 3 show an example of a means for moving the developing device 6 and cleaning device 8 closer to or farther away from the photosensitive drum 4, the present invention is not limited to this, and other similar functions may be used. Of course, the means having the following may also be used.

Further, in the embodiment, the solenoids 22a, 2
2b, 28a, and 28b, the switches for connecting the power supply are linked with the operation of the handle 32, but the present invention is not limited to this, and the switches do not have to be linked with the operation of the handle 32. Of course. In this case, it is clear that the user should turn on this switch when copying and turn it off when carrying the copy.

(Effects of the invention) As is clear from the above explanation, according to the present invention, the following effects are achieved.

(1) The developing device and cleaning device can always be kept horizontal when carrying the copying machine.
Developer will not spill out of the developing device and cleaning device.

(2) Therefore, the main body of the machine and the optical device are not contaminated by the developer, and high-quality copy images without fogging can always be obtained.

[Brief explanation of the drawing]

1 is a schematic perspective view of the main parts of an embodiment of the present invention, FIG. 2 is a sectional view of FIG. 1 taken along a plane passing through the rotation support shaft 6a and perpendicular to the bearing guide rail 16a, The figure is a sectional view of FIG. 1 taken along a plane perpendicular to the rotation support shaft 6a and passing through the spring 20a and the operating rod 24a, and FIG. 4 is a schematic configuration diagram during copying operation.
FIG. 5 shows a schematic diagram of the preparation for carrying, etc., and FIG. 6 shows a schematic diagram of the configuration when carrying. 2... Housing, 4... Photosensitive drum, 6... Developing device, 6
a, 8a...Rotation shaft, 8...Cleaning device, 1
2a, 12b, 14a, 14b... bearing portion, 16
a, 16b, 18a, 18b... Bearing guide rail, 20a, 20b, 26a, 26b... Spring, 22a, 22b, 28a, 28b... Solenoid, 32... Handle.

Claims (1)

[Claims for Utility Model Registration] A portable electrophotographic device having at least a photosensitive drum and a developing device and a cleaning device arranged close to and substantially parallel to the photosensitive drum, wherein the developing device and the cleaning device are rotatable. a support means for supporting the support means; and by moving the support means, the developing device and the cleaning device are supported at a first position close to the photosensitive drum during a copying operation;
When carrying, the second
By having a structure in which the center of gravity of the developing device and the cleaning device is located downward, the developing device and the cleaning device can be kept horizontally regardless of the inclination of the main body of the machine. A portable electrophotographic device characterized by: