JP2686155B2 - Portable image forming device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a portable image forming apparatus such as a portable copying machine, a facsimile, and a printer.

[Prior Art] Conventionally, this type of copying machine has an openable / closable cover at the bottom thereof, and the jammed paper is removed by opening the cover.

At that time, if a voltage is applied to the internal charging device or the like, there is a risk of electric shock. Therefore, a conventional device has been devised so that the power is turned off at the same time when the cover is opened.

For example, in conjunction with the opening operation of the cover, the power switch is turned off to ensure the safety of the cover disclosure (see Japanese Patent Laid-Open No. 62-65400).

[Problems to be Solved by the Invention] However, the cover / power switch interlocking mechanism as described above requires a complicated mechanism and has problems such as failure and cost increase.

On the other hand, the conventional portable image forming apparatus is provided with a cylindrical toner storing means for developing therein, but the portable image forming apparatus includes not only a bottom surface but also an upper surface,
Furthermore, it can be placed on the floor, with the front and back or front and back facing down.

However, depending on the direction in which such an apparatus is placed, the cylindrical developing toner storage means may be left standing. In that case, the toner inside is unevenly compressed to the lower part of the cylinder. As a result, there is a problem that it is difficult to uniformly supply the toner during image formation.

An object of the present invention is to solve such problems of the related art.

[Means for Solving the Problems] The present invention according to claim 1 has a top surface, a bottom surface, a left side surface, and a front side surface. In a possible portable image forming apparatus, any one surface other than the one surface on which the cover is present has a shape capable of stably standing the apparatus with the surface as the bottom. A power supply unit to which a power cord is connected is provided, and the remaining four surfaces other than the surface on which the cover is present and the surface on which the power supply unit is provided can be used as a bottom surface to stably stand the device. It is an object of the present invention to solve the conventional problems such as the cost increase and the failure by using a portable image forming apparatus having a non-shaped shape.

Further, the present invention of claim 3 is a portable image forming apparatus having six surfaces of up, down, left and right, and front and back, which forms an image on a paper, and which is at least substantially perpendicular to the axis of the photoconductor. It is an object of the present invention to solve the conventional problem of uneven toner distribution by using a portable image forming apparatus having two surfaces whose bottom faces prevent the apparatus from standing upright.

[Operation] According to the present invention of claim 1, when the operator opens the cover and tries to fix the paper jam inside, the apparatus is placed with the five surfaces other than the surface to which the power cord is connected facing down. It cannot be placed stably on the floor or desk, so be sure to place the device with the plane to which the power cord is connected facing down. At that time, since the surface cannot be placed with the power cord still connected, the worker inevitably pulls out the power cord and places the device on the floor or the like. As a result, when the cover is opened, the power of the device is always turned off.

Further, in the present invention of claim 3, the two surfaces substantially perpendicular to the axis of the photoconductor have a shape such that the apparatus cannot be stably stood with the surfaces as the bottom. Do not place the device on the floor, etc. As a result, the cylindrical developing toner storage means is not placed upright. This can eliminate the bias of the developing toner.

[Examples] Hereinafter, the present invention will be described with reference to the drawings showing the examples.

FIG. 1 is a perspective view of an embodiment of a portable image forming apparatus according to the present invention.

In the figure, the copying apparatus main body 1 includes a front surface 1a, a rear surface 1b,
It has six surfaces, an upper surface 1c, a lower surface 1d, a right surface 1e, and a left surface 1f.

The front surface 1a and the rear surface 1b are shaped so that the apparatus main body 1 cannot be stably stood with the surfaces as the bottom. For example, as shown in the drawing, a convex curved surface is formed outward.

Moreover, the upper surface 1c has a shape such that the apparatus body 1 cannot be stood upright with the surface as the bottom. For example, as shown in the figure, the document pressing cover 2 is attached so as to be openable and closable. A storage pocket 3 for accommodating a document, which becomes thicker toward the end, is attached on the document pressing cover 2. Further, an operation panel 4 including keys such as a ten-key pad, a copy start key, a density adjustment key, and a display lamp is provided at an end of the upper surface 1c.

The right surface 1e has a shape such that the apparatus body 1 cannot be stably stood with the surface as the bottom. For example, as shown in the figure, a handle 5 for carrying the apparatus body 1 is attached.

The left surface 1f is shaped so that the apparatus main body 1 can be stably stood with the surface as the bottom. For example, it has a planar structure. Further, it may have a shape that allows the apparatus main body 1 to be stood upright even if there are some irregularities.
In addition, this planar structure is a cylindrical toner storage means of the developing device 12.
It is desirable to be parallel to the cylinder direction of 12a (second
See figure). As a result, when the apparatus main body 1 is stood up, it is possible to prevent the toner from being biased to one end portion in the longitudinal direction of the developing device 12. A power supply unit 7 to which a power cord 6 for supplying electric power to the apparatus body 1 is connected is provided on the left surface 1f. The power cord 6 may be of a type that is connected to the power source 7 by a magnet.

Further, on the lower surface 1d, as shown in FIG.
A cover 8 that opens and closes to open the inside of is attached. Inside the apparatus main body 1, a photoreceptor 10 on which a latent image is formed by image light, and a developing device 12 for developing the latent image
Further, a thermal fixing device 9 for thermally fixing the toner of the paper on which the toner image is transferred from the photoconductor 10 is provided.

FIG. 3 is a sectional view of the device, and FIG. 4 is a sectional view of the device with the cover 8 opened.

In the figure, the developing device 12 is supplied with toner from a cylindrical developing toner storage means 12a. Around the photoreceptor 10, a main charger 20 for main charging and a transfer device 1 for transfer charging
8. A cleaning device 19 for cleaning the residual toner is arranged. A contact glass 21 for placing a document is provided on the upper surface of the apparatus body 1, and a lamp 13 and an imaging lens 14 are arranged below the contact glass 21.

Further, a tray 15 for placing copy paper is provided on the side where the handle 5 is attached. Further downstream thereof, a paper feed roller 16 for feeding the copy paper inside and a registration roller 17 for timing the paper feed are arranged.

In such a device, the front and rear both sides 1a and 1b substantially perpendicular to the cylindrical developing toner storage means 12a of the developing device 12 should have the faces as the bottom as shown in FIG. Cannot be formed, for example, a convex curved surface is formed as shown in the figure.

 Next, the operation of the present invention will be described.

When a paper jam occurs, it is necessary to open the bottom cover 8. Therefore, the operator needs to make the surface 1d having the cover 8 on the upper side or the lateral side. For that purpose, it is necessary to make the other one side of the apparatus main body 1 face down, and at that time, the front and rear surfaces 1a, 1b
Has a convex curved surface, it cannot be placed on both sides, and the upper surface 1c cannot be placed on the right side because the document storage pocket 3 is projected. Since the handle 5 is attached to 1e, its surface cannot be turned down. Therefore, after all, the power cord 6
The only way is to stand the device main body 1 with the left side 1f attached with the face down. Therefore, the worker pulls out the power cord 6 from the power supply unit 7 and turns off the power. Then, the left side 1f is attached to the floor, the apparatus main body 1 is erected, the cover 8 is opened, and the jammed paper is removed. In addition, in the type in which the power cord 6 is connected to the power source section 7 by a magnet, even if the user forgets to pull out the power cord 6, the left side 1f is forcibly forced.
It comes off by putting on the floor.

Therefore, in this copying machine, since the power is turned off when the cover 8 is opened, there is no concern that the operator receives an electric shock.

On the other hand, since the front and rear surfaces 1a and 1b have convex curved surfaces, it is not possible to place both surfaces downward, so that the cylindrical developing toner storage means 12a of the developing device 12 stands vertically. There is no concern that the device body 1 is placed on the floor. Therefore, the toner in the cylinder is not biased to one end of the developing device 12 in the longitudinal direction.

The present invention is not limited to copying machines, but can be applied to portable image forming apparatuses such as copying machines and printers.

[Effects of the Invention] As described above, according to the present invention, the surface on which the power supply unit is provided has a shape that allows the apparatus to stand upright with the surface being the bottom, and the cover is attached. Other surfaces than the surface are shaped so that they cannot be stood upright, so if you want to open the cover, you have no choice but to turn down the surface of the power supply. As a result, when opening the cover, the power cord is unplugged, the apparatus main body is placed on the floor, and the cover is opened, so there is no risk of electric shock to the operator.

Further, according to the present invention, at least the two surfaces substantially vertical to the cylindrical developing toner storage means have a shape such that the apparatus cannot be stood upright with the surfaces being the bottoms. There is no need to worry about the device body being placed on the floor or the like when the storage means is set upright. Therefore, the toner in the cylinder can be prevented from being biased to one end portion in the longitudinal direction of the developing device 12.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a portable image forming apparatus according to the present invention, FIG. 2 is a perspective view showing a state where the cover of the embodiment is open, and FIG. Cross section,
FIG. 4 is a sectional view of the same embodiment with the cover opened. 1 ... Device main body, 1a ... Front surface, 1b ... Rear surface, 1c ... Top surface, 1d ... Bottom surface (bottom surface) 1e ... Right surface, 1f ... Left surface, 2 ...
... Document holding cover, 3 ... Document storage pocket, 5 ... Handle, 6 ... Power cord, 7 ... Power supply section, 8 ... Cover, 12 ... Developer, 12a ... Cylindrical developing toner storage means

Claims (3)

(57) [Claims] 1. A portable, portable image forming apparatus having six surfaces of up, down, left and right, front and back, and having an openable and closable cover on any one of the surfaces to form an image on a sheet. Any one surface other than the one surface on which is present has a shape that allows the device to stand upright with that surface as the bottom, and a power supply unit to which the power cord is connected is provided on that surface. A portable device characterized in that all of the remaining four surfaces other than the surface on which the cover is present and the surface on which the power supply unit is provided are shaped so that the apparatus cannot be stood upright with the surfaces as the bottom. Image forming apparatus. 2. The portable image forming apparatus according to claim 1, wherein the plane on which the power supply unit is provided is a plane substantially perpendicular to the sheet conveying line. 3. A portable, portable image forming apparatus for forming an image on a sheet, which has upper, lower, left and right, front and rear, and has at least two surfaces that are at least substantially perpendicular to the axis of the photosensitive member. A portable image forming apparatus having a shape such that the apparatus cannot be stably stood upside down.