JPH068138Y2 - Printer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a laser printer, an LED printer, and the like.
The present invention relates to a printer device that transfers an image of a document onto a fed sheet.

[Conventional technology]

In recent years, the number of office equipment owned by one office is increasing due to the spread of office equipment such as computers, and as the number of office equipment owned increases, it is becoming difficult to secure the installation location. For example, in general, in an office or the like, a computer or the like is often installed on a desk together with its peripheral devices, and if this computer and its peripheral devices occupy a large space, it may interfere with other work on the desk or its surroundings. Become. Therefore, these office equipments are inevitably required to be downsized.

A printer device is often used as a peripheral device such as a computer or a word processor which is widely used as office equipment. As the printer device, a laser printer or an L printer is used.
There are electrostatic copying devices such as ED printers.

For example, in a conventional laser printer, as in a general copying machine, a paper feed tray is provided with its rear end portion protruding from the machine frame. When feeding paper to the paper feed tray, the paper feed tray is removed from the machine frame and then paper is replenished. In addition, when a paper jam occurs, a predetermined door or the like is opened, the jam position of the paper is confirmed, and the paper is removed.

[Problems to be solved by the device]

However, in the above-mentioned conventional structure, since the paper feed tray is detachably attached to the machine frame, it is necessary to provide a member for detachably mounting the paper feed tray on the machine frame. Further, in the case of a paper jam, a door or the like is required so that the internal paper transport path can be exposed in order to take measures such as paper removal. Therefore, the number of parts increases, the structure becomes complicated, and the cost increases.

Further, since the rear end of the paper feed tray projects from the machine frame, there is an inconvenience that the installation occupation area of the laser printer inevitably becomes large.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the printer device according to the present invention is provided with a paper ejection receiving member for accommodating a paper on which an image is formed, which is a rear surface of the paper ejection receiving member. A paper feed tray for accommodating paper is arranged on the side, an image forming unit for forming an image on the paper is arranged on the back side of the paper feed tray, and reaches the paper ejection receiving member from the paper feed tray through the image forming unit. A paper transport path is formed on the back side of the paper feed tray, the paper discharge receiving member is rotatably provided with respect to the machine frame so as to expose the paper feed tray, and the paper feed tray is further provided. To expose at least the paper transport path,
It is characterized in that it is provided so as to be rotatable with respect to the machine frame.

[Action]

According to the above configuration, the paper discharge receiving member is provided so as to be a part of the machine frame, and is rotatably provided with respect to the machine frame so as to expose the paper feed tray. The paper can be supplied to the paper feed tray simply by rotating the paper discharge receiving member. Therefore, since it is not necessary to remove the paper feed trays one by one to replenish the paper, it is not necessary to provide a member for detachably mounting the paper feed tray, and the number of parts can be reduced. Further, since the paper discharge receiving member also serves as a part of the machine frame, it is not necessary to provide a new member such as an exposure door of the paper feeding tray.

Further, since the paper feed tray is also rotatably provided with respect to the machine frame so as to expose the paper transport path formed on the back side of the paper feed tray, the paper discharge receiving member should be rotated. After the paper feed tray is exposed, if the paper feed tray is further rotated, it is possible to easily perform paper jam processing and the like in the paper transport path.

In this way, the paper discharge receiving member is also used as the door that exposes the paper feed tray, and the paper feed tray is also used as the door that exposes the paper transport path, so the number of parts is further reduced, and the structure is simple. In addition, the cost can be reduced.

Further, the paper feed tray is arranged on the back side of the paper discharge receiving member, and the paper transport path connecting the paper feed side of the paper feed tray and the paper input side of the paper discharge receiving member passes through the back side of the paper feed tray. By being formed so as to reach the paper discharge receiving member, and the image forming unit is arranged along this paper conveyance path, the paper feed tray does not protrude from the machine frame, and the accommodation density in the machine frame is increased. As a result, the size of the printer device can be reduced.

[Embodiment 1] An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

As shown in FIG. 1, a laser printer as a printer device according to the present embodiment has a machine frame 26 having a substantially triangular cross-sectional shape, and a paper feed roller 20 provided with a paper feed roller 20 on the top thereof. A section 21 is provided. A face-down tray 19, which is a paper ejection receiving member for accommodating the paper ejected after printing, is provided below the manual insertion / feeding section 21 along the slope of the machine frame 26. That is, the face-down tray 19 also serves as a slope portion of the machine frame 26 and a tray for the printed paper. The face-down tray 19 is vertically rotatable by an upper shaft supporting portion 19b, and a face-down paper inlet into which the printed paper is inserted on a lower side wall which is a paper input side. 19a is provided. A discharge roller 18 is provided on the outer side of the lower side wall of the face-down tray 19 corresponding to the face-down paper inlet 19a, and a guide wall member 2 forming a part of one side of a paper transport path 25 described later. Are formed.

On the back side of the face-down tray 19, a paper feed roller 5 for sending out paper, a paper feed tray 1 for accommodating paper, and one end side thereof is rotatably supported by the shaft supporting portion 19b. On the other hand, a supporting and fixing member 31 having the other end attached to the upper side wall of the paper feed tray 1 is provided.

As shown in FIG. 2, the paper feed tray 1 is supported by a shaft supporting portion 19b via a supporting and fixing member 31 so as to be rotatable in the vertical direction with an inclination angle substantially the same as that of the face down tray 19 described above. It is supported. When the paper feed tray 1 is rotated, it is desirable that the paper supply tray 1 is supported by the support fixing member 31 in the rotated state. The paper feed tray 1 has a rotating plate 1a for pushing the paper toward the paper feed roller 5, and during paper feeding, the paper feed roller 5 rotates so that the paper is fed from inside the paper feed tray 1. Are sent out one by one. A mirror 3 is attached to the bottom wall of the paper feed tray 1, and a semiconductor laser device 12 shown by a chain double-dashed line in the drawing is provided in the vicinity of the mirror 3. Then, as indicated by the one-dot chain line in the figure, the semiconductor laser device 12
The laser light emitted from is reflected by the mirror 3 and guided onto the photosensitive drum 10 provided below. The semiconductor laser device 12 and the developing process unit centered on the photosensitive drum will be collectively referred to as an image forming unit.

A paper transport path 25 is formed from the paper feed side on which the paper feed rollers 5 are arranged in the paper feed tray 1, and from the manual insertion paper feed section 21 to the face-down paper entrance 19a. On the paper transport path 25, in order from the paper feed side of the paper feed tray 1, a transport roller 6 for transporting the paper sent from the paper feed roller 5 and a transport roller 6 or the paper feed roller 20 Use the received paper as the photoconductor drum 10.
Transport rollers 7, 8 and 9 for transporting to. Around the photosensitive drum 10, a main charger 11 that charges the photosensitive drum 10, a developing device 13 that develops an electrostatic latent image formed on the surface of the photosensitive drum 10 by exposure, and a photosensitive drum 10 are provided. A transfer charger 14 that transfers the toner image on the surface to a sheet and a cleaning device 15 that removes the toner adhering to the surface of the photosensitive drum 10 after the transfer are sequentially provided.

Therefore, in this laser printer, the face-down tray 19, the paper feed tray 1, and the developing process unit centering on the photosensitive drum 10 are arranged in parallel.

Further, face down paper inlet 1 from the photoconductor drum 10
A pair of upper and lower heat rollers 16 as a fixing device for heating and fixing the toner image transferred from the photoconductor drum 10 onto the sheet are provided on the sheet conveying path 25 to the discharge roller 18 near 9a, and the fixing roller after fixing. A guide wall member 4 that forms a part of the paper transport path 25 by facing the discharge roller 17 that further transports the paper, the transport path changing member 23, which will be described later, and the guide wall member 2 of the face-down tray 19 at a constant interval. And are arranged in this order.

The transport path changing member 23 is configured to form a paper transport path 25 and a branch discharge path 24 indicated by broken lines in the drawing by appropriately rotating around the upper end portion. The branch discharge path 24 communicates with a discharge port 22 for discharging the sheet sent from the roller 17 to the outside.

In the above configuration, the photosensitive drum 1 is used during the printing operation.
With the rotation of 0, the surface thereof is charged when it faces the main charger 11. Next, the semiconductor laser device 1
By irradiating the surface of the photoconductor drum 10 with the laser light emitted from No. 2 through the mirror 3, only the exposed portion is discharged and an electrostatic latent image is formed. When the electrostatic latent image faces the developing device 13, the toner adheres to form a toner image.

On the other hand, the paper is sent from the manual insertion paper feed unit 21 by the paper feed roller 20 or from the paper feed tray 1 by the paper feed roller 5 and the carry roller 6, and then the carry rollers 7, 8, 9
Are conveyed to the photoconductor drum 10. Then, the toner image formed on the photosensitive drum 10 is transferred onto the paper by the transfer charger 14, and the toner image on the paper is heated and fixed by the heat roller 16. After that, the paper is discharged from the branch discharge path 24 to the discharge port 22 by the discharge roller 17 and the conveyance path changing member 23, or discharged from the face-down paper inlet 19 a to the face-down tray 19 through the discharge roller 18.

The toner remaining on the photosensitive drum 10 after the toner image is transferred is removed by the cleaning device 15 to prepare for the next printing.

Here, when replenishing the paper to the paper feed tray 1, the face down tray 19 is rotated in the direction of arrow A. As a result, the paper feed tray 1 is exposed, so that paper can be easily replenished in the paper feed tray 1. Subsequently, when the paper feed tray 1 is rotated in the direction of arrow A, as shown in FIG. 2, the paper feed tray 1 is rotated with the same inclination angle as that of the face-down tray 19, and the paper feed path is rotated. 25, and the image forming portion is exposed. Therefore, for example, even if a paper jam occurs in the middle of the paper transport path 25, the paper jam can be easily removed by rotating the face-down tray 19 and the paper feed tray 1 as shown in FIG. be able to.

As described above, in this apparatus, since the face-down tray 19 and the paper feed tray 1 are respectively rotatable in the vertical direction, it is necessary to remove the paper feed tray 1 in order to replenish the paper. By eliminating the number of parts, the internal structure of the machine frame 26 can be simplified and the cost can be reduced.

Further, the paper feed tray 1 is housed inside, and the paper transport path 25 is formed so as to reach the face down tray 19 from the paper feed side of the paper feed tray 1 through the back side of the paper feed tray 1. By disposing the developing process unit centered on the photosensitive drum 10 along the transport path 25, the paper feed tray 1 does not project from the machine frame 26, and the accommodation density in the machine frame 26 is increased. Therefore, the printer device can be downsized.

Further, in this embodiment, the face-down tray 1
9 and the paper feed tray 1 are arranged in a vertical type inclined at a predetermined angle, and the above-mentioned developing process unit is provided in parallel with the paper feed tray 1, so that further miniaturization is promoted.
The installation area of the printer device on the desk is small.

In this embodiment, the face-down tray 19 and the paper feed tray 1 are pivotally supported in the upper part in order to be rotatable in the vertical direction, but this is not limited to the pivotal support. As long as it is movable, its structure does not matter.

[Embodiment 2] Another embodiment of the present invention will be described with reference to FIGS. The members having the same functions as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 3, a laser printer as a printer device according to this embodiment has a photosensitive drum 10, a main charger 11 arranged around the photosensitive drum 10, and a developing device 13.
The transfer charger 14 and the cleaning device 15 are linked by a frame member 32 to form a developing process unit 30.

Both ends of the frame member 32 are attached to both ends of the paper feed tray 1, respectively, and when the paper feed tray 1 is vertically rotated, the developing process unit 30 is also vertically rotated. become.

With the above configuration, the face-down tray 19 is rotated in the direction of arrow A when replenishing paper to the paper feed tray 1. As a result, as shown in FIG. 5, the paper feed tray 1 is exposed, so that it is possible to easily supply paper to the paper feed tray 1. Then, move the paper feed tray 1 to the arrow A
When the paper feed tray 1 is rotated in the direction, as shown in FIG. 4, the paper feed tray 1 is integrated with the developing process unit 30 and is rotated at the same inclination angle as that of the face-down tray 19. 25 is completely exposed. Therefore, for example, even if a paper jam occurs in the middle of the paper transport path 25, the paper jam can be removed more easily by rotating the face-down tray 19 and the paper feed tray 1 as shown in FIG. can do. The face-down tray 19 and the paper feed tray 1 are
It is desirable that the support fixing member 31 supports the support fixing member 31 in a rotated state.

And after paper supply or paper jam handling,
By opening the supporting and fixing member 31 and rotating the sheet feeding tray 1 in the direction of arrow B, the developing process section 30 is arranged on the sheet conveying path 25 as shown in FIG. By rotating the tray 19 in the direction of arrow B, it is possible to prepare for the next printing.

As described above, in the first embodiment, the components of the developing process unit are provided in the machine frame, whereas in the present embodiment, the developing process unit 30 is linked by the frame member 32, so that the face With the down tray 19 and the paper feed tray 1 rotated, paper jam processing can be easily performed.

[Effect of device]

As described above, the printer device according to the present invention is provided so that the paper ejection receiving member that accommodates the paper on which the image is formed is a part of the machine frame. A paper feed tray that accommodates the paper is arranged, and an image forming unit that forms an image on the paper is arranged on the back side of the paper feed tray, and a paper conveyance path that reaches the paper discharge receiving member from the paper feed tray through the image forming unit is provided. ,
Formed on the back side of the paper feed tray, the paper discharge receiving member is rotatably provided with respect to the machine frame so as to expose the paper feed tray, and the paper feed tray further includes at least the paper transport path. The structure is provided so as to be rotatable with respect to the machine frame so as to expose the.

As a result, the number of parts can be reduced, and the structure can be simplified and the cost can be reduced. Further, since the printer device is downsized, there is an effect that the installation occupation area can be reduced.

[Brief description of drawings]

1 and 2 show one embodiment of the present invention, and FIG. 1 is a schematic overall configuration diagram showing a printer device,
FIG. 2 is a schematic overall configuration diagram showing the printer device with the face-down tray and the paper feed tray rotated. 3 to 5 show another embodiment of the present invention. FIG. 3 is a schematic overall configuration diagram showing a printer device, and FIG. 4 is a schematic diagram showing the printer device at the time of paper jam processing. And FIG. 5 is a schematic overall configuration diagram showing the printer device at the time of paper supply. 1 is a paper feed tray, 10 is a photoconductor drum, 16 is a heat roller (fixing device), 19 is a face-down tray (paper ejection receiving member), 19a is a face-down paper inlet, 19b is a shaft support, and 21 is manual insertion. Paper feed unit, 25 is a paper transport path, 26 is a machine frame, 30 is a development process unit, 31 is a supporting and fixing member, 32
Is a frame member.

Claims (1)

[Scope of utility model registration request] 1. A paper discharge receiving member for accommodating a paper on which an image is formed is provided so as to be a part of a machine frame, and a paper feeding tray for accommodating paper is arranged on the back side of the paper eject receiving member. The image forming unit that forms an image on the paper is arranged on the back side of the paper feed tray, and the paper conveyance path from the paper feed tray to the paper discharge receiving member via the image forming unit is on the back side of the paper feed tray. Formed,
The paper ejection receiving member exposes the paper feeding tray,
A printer device rotatably provided with respect to the machine frame, and the paper feed tray further rotatably provided with respect to the machine frame so as to further expose at least the paper transport path. .