JPH0436764A - Desk with built-in copying machine - Google Patents

Abstract

PURPOSE:To easily perform the replenishment of a paper, the maintenance of a device and the removal of a jammed paper by providing an original placing part and an image forming part, etc., in an upper drawer part and a paper housing part, etc., in a lower drawer part. CONSTITUTION:The original placing part 111, the main part of a paper feeding mechanism, the image forming part and a fixing and paper ejecting part 113 are provided in the upper drawer part 102, and the upper housing part 141 and a part of the paper feeding mechanism are provided in the lower drawer part 103. With such constitution, in a desk, with built-in copying machine, a copying machine part is structurally divided into two upper and lower drawer parts to be incorporated and the respective drawer parts cn be singly pulled out. The maintenance is performed by properly pulling out the upper and lower drawers, so that the parts are easily exchanged. The replenishment of the paper is performed by housing the upper drawer part 102 and pulling out the lower part 103.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a desk with a built-in copying machine that is built into the desk and allows copying to be performed while sitting. The present invention relates to a desk with a built-in photocopier, which can be effectively used as a desk, and which allows easy maintenance of paper replenishment, image forming mechanism, paper transport mechanism, etc.

[Conventional technology]

2. Description of the Related Art As copying machines have become more widespread, opportunities to use them have increased, and there has been a strong desire to have them installed nearby.

In response to this, many proposals have been made for the copying machine to be built into the desk, or to be used by attaching it to the desk.
JP-A No. 61-80268 "Image Forming Apparatus"
No. 1-99168 "Image Forming Apparatus" ■ JP-A-61-11
There is one shown in No. 8771 "Image Forming Apparatus".

■ Utility Model Publication No. 55-6986 has a document placement surface and an operation section on the top surface of the desk, feeds and ejects sheets one by one from the front, and also has a document placement section, an image forming section, and a paper feeder. A configuration is shown in which the copying section is housed in one drawer, and the movable document table moves into the desk during exposure.

■ The copying machine shown in Japanese Patent Application Laid-Open No. 61-80268 stores the main body of the copying machine in one drawer, and when the drawer is stored inside the desk, the document placement section is at approximately the same height as the top surface of the surrounding desk. It forms part of the top surface of the desk. When making a copy, the document is placed on the document placement section on the top of the desk with the drawer retracted, and paper is fed and ejected from the front of the drawer.

■ The device shown in Japanese Patent Application Laid-open No. 61-99168 has an L-shaped appearance and is used by placing it so that one part is located above the desk and the other part is located on the side. . The upper part of the desk accommodates a document placing section and an exposure section, and the side section accommodates an image forming section and a paper feeding section. Paper is supplied from the front of the desk, and paper is ejected downward.

■ The device shown in JP-A No. 61-118771 houses the main body of the copying machine in one drawer section, and has two parts:
The structure of the image forming section, paper feeding section, etc. is based on the above-mentioned Japanese Patent Application Laid-Open No. 61-80268.
It is the same as that shown in the number. The device shown here also has a structure in which the contact glass provided on the top surface of the document tray also serves as the cover glass used for the desk, and the cover that presses the document also serves as the cover that covers the desk. .

[Problem to be solved by the invention]

However, with conventional desks with built-in copiers,
It has the following problems.

First, with devices that use the top surface of the desk as the document placement surface or those that place the document 'R placement area on the top surface of the desk, if there are documents etc. placed on that area, it is necessary to put them away first. You cannot use a photocopying machine. Another problem is that in order to keep the copying machine available for use at all times, it is impossible to place anything on the document placement surface, and the top surface of the desk cannot be used effectively.

The above-mentioned conventional examples: ■Japanese Patent Application Laid-Open No. 61-80268, ■Japanese Patent Application Publication No. 6
Some examples of Japanese Patent Application Laid-open No. 1-99168, (1) Japanese Patent Application Laid-Open No. 118771-1982, and (2) Japanese Patent Application Publication No. 6986-1986 have the above-mentioned problems. Note that Japanese Utility Model Publication No. 55-6986 shows a device that has a movable document table on the top surface of the drawer section and can be used with it pulled out. Therefore, there is an inconvenience that thick originals such as books hit the top plate of the desk and cannot be copied.

Secondly, in the case where paper is fed one sheet at a time or when a paper cassette is used, there is a problem in that it is time-consuming and troublesome to replenish paper.

With machines that feed paper one sheet at a time, it takes time to take out and feed paper each time you copy, and even with machines that use a paper cassette, it is necessary to remove the cassette from the copier body, replenish paper, and then replenish the paper. It requires time and effort to install.

The conventional example shown in ■ Japanese Utility Model Application No. 55-6986 feeds sheets one by one;
No. 8, ■Japanese Patent Publication No. 61-99168, ■Japanese Patent Publication No. 61-1
In the apparatus shown in No. 18771, the paper cassette is attached and detached from the front of the drawer or from the front of the main body of the copying machine, and both have the above-mentioned problems.

In addition, the paper cassette shown in JP-A No. 61-99168 has a vertical paper cassette, which has the disadvantage that the stored paper tends to buckle, requiring an additional mechanism to prevent this, and that it is difficult to attach and detach the cassette. It also has

Third, all of the copying machines shown in the conventional examples have a structure in which the paper storage section, paper feed section, image forming section, and document placement section are integrated, and because they are built into a desk, they are miniaturized and take up little space. There is a problem in that there is not enough room for maintenance of the image forming device, paper storage device, etc. If the device is built into a drawer, it would be difficult to repair or replace parts while it is pulled out because there is a large paper storage section at the bottom.

Another problem is that when a paper jam occurs in the paper transport path, it is not easy to remove it. To solve this problem, a copying machine having a structure in which the upper part and the lower part can be separated and opened with the paper conveyance path as a boundary has been proposed. There is something indicated in the number. However, in both cases, the upper part is rotated upward to open the apparatus, and since the image forming part, paper storage part, etc. are integrally constructed, both devices to be separated are large.

In particular, the upper part has an image forming device such as a photoreceptor, so the volume and weight are large, and a release assisting mechanism such as a spring is required to rotate it upward and open it.

As described above, all conventional desks with built-in copiers have all or part of the first to third problems described above.

The present invention has been made in view of the above, and is a copying machine built into a desk, in which the upper surface of the desk can be effectively used without being used as a document placement surface, and it is also convenient for paper replenishment and device maintenance. It also aims to facilitate removal of paper jams when they occur.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention is built into two upper and lower drawer sections of a desk, and the upper drawer section includes:
A built-in copying machine that has a document placement section, a main part of a paper feeding mechanism, an image forming section, and a fixing/discharging section, and the lower drawer section has a paper storage section and a part of the paper feeding mechanism. It provides a type desk.

Further, a main part of the paper feeding mechanism included in the upper drawer section and a part of the paper feed mechanism included in the lower drawer section are located at positions that form a continuous paper conveyance path when only the upper drawer section is pulled out. This provides a desk with a built-in copying machine that can be placed in a desk.

Further, there is provided a desk with a built-in copying machine, wherein a portion constituting the lower side of the paper conveyance path in the upper drawer is attached to a lower base rotatably coupled to the upper drawer main body and its rear part. It is something to do.

Furthermore, there is provided a desk with a built-in copying machine, in which one roller of all pairs of rollers that are provided in the paper transport path from the paper storage section to the paper ejection and that nip and transport the paper is attached to the lower base. It is something to do.

[Function] In a desk with a built-in copying machine configured as described above, the structure of the copying machine is divided into two upper and lower drawers, and each drawer can be pulled out independently. For maintenance, the upper and lower drawers can be pulled out as appropriate, and parts can be easily replaced.

Further, paper can be replenished by storing the upper drawer section and pulling out the lower drawer section.

At this time, in addition to the paper storage section, only a limited portion of the paper feed section is attached to the lower drawer section, so you can easily replenish the paper without removing the paper cassette, and you can sit in the chair. It is possible even if it remains.

When using the copying machine, when the upper drawer is pulled out and the lower drawer is closed, the paper feed mechanism, which is divided into the upper drawer and the lower drawer, forms a series of paper conveyance paths, The paper is conveyed from the paper storage section of the drawer section to the image forming section, and the state becomes ready for copying. At this time, the upper surface of the upper drawer can be used as a document placement surface, and there is no need to use it on a desk.

The part that constitutes the lower side of the paper transport path in the upper drawer is attached to the lower base that is rotatably connected to the upper drawer main body and behind it, so that even if paper jams occur in the paper transport path, , the upper drawer can be pulled out and the lower base rotated downward, and the upper and lower parts of the paper transport path are opened, allowing jammed paper to be easily removed. .

Further, since the lower side of the paper conveyance path is opened, the volume and weight of the members to be opened are small, and since the opening direction is in the direction of gravity, it is easily opened. Furthermore, there are no parts with strict positional accuracy, high-precision parts, or devices on the lower side of the paper conveyance path, so there is no risk of problems occurring due to the opening operation.

If one roller of all the roller pairs that nip and convey the paper in the paper conveyance path is attached to the lower base, all the roller pairs will be separated when the lower base is rotated downward. The jammed paper can be removed more easily without having to pinch the paper.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a schematic cross-sectional view from the side showing a state in which a desk with a built-in copying machine according to the present invention is used.

The desk 101 is equipped with an upper drawer part 102 and a lower drawer part 103, and as shown in FIG. (not shown). A document placement surface 111 is provided on the upper surface of the upper drawer section 102, and a document reading section 1 that runs under this surface reads an image on the document surface and converts it into an electrical signal.
It has 12. A pressure plate that presses the original may be attached on the original placing surface 111 so that it can be opened and closed. Further, although the document reading unit 112 is generally a device using a lens array, a mirror, or a fixed image sensor, it may be any device that does not take up space in the contraction direction, and a reading device with other structure may also be used. can.

A belt-shaped photoreceptor 121 is provided below the portion where the document reading section 112 travels, and on which an electrostatic latent image is formed by negative charging and partial charge removal.

Around the heald-shaped photoconductor 121, along the running direction, there is a charging device 122 that performs a -like charging process on the surface of the belt-shaped photoconductor 121, and a belt-shaped a writing device 123 that irradiates the photoreceptor 121 with an optical strength signal to form an electrostatic latent image;
A developing device 131 that makes an electrostatic latent image visible by attaching toner to it, a transfer device 124 that transfers the developed image onto paper, and a cleaning unit 125 that removes toner remaining on the heald-like photoreceptor 121. is provided.

Although the writing device of this embodiment uses an LED, the writing device is not limited to this as long as it is small.

Further, a paper conveyance path is formed in the lower part of the upper drawer section 102, and includes a half-moon-shaped paper feed roller 142 for taking out the uppermost paper from the paper storage section 141 when the lower drawer section 103 is closed, and the paper feed roller. An upper guide plate 148 and a lower guide plate 1 that guide the paper fed from 142 in a predetermined direction.
49 and an upper conveyance roller 143 which forms a pair with a lower conveyance roller 144 provided in the lower drawer section 103 and conveys the paper is provided at the rear lower side of the upper drawer section main body 153. Furthermore, between the transport roller pair 143 and 144 and the transfer device 124, there is a roller pair 145 that transports the paper sent out from the paper storage section, and a heald-like photoreceptor 1.
A pair of registration rollers 146 that feeds the paper in synchronization with the movement of the rollers 21 are provided, and a paper detection sensor 147 that detects the presence or absence of paper is arranged behind the pair of registration rollers 146. In front of the transfer device 124, there are a belt conveyance device 132 that conveys the paper onto which the image has been transferred, a fixing device 133 that fuses the toner image to the paper, and a fixing device 133 that fuses the toner image to the paper.
Paper ejection roller 134 that sends paper from 3 to tray 135
and is provided.

Among the devices forming the paper conveyance path, the upper conveyance roller 143, rollers 145a and 146a disposed below the roller pair 145 and registration roller pair 146, the transfer device 124, and the belt conveyance device 132. , the lower roller 133a of the fixing device 133, and the tray 135 are attached to a lower base 152, which is a separate part of the upper drawer main body 153, and this lower base 152 is attached to a rotating shaft provided near the rear end. Upper drawer main body 1 at shaft 151
53 so as to be rotatable. The front of the lower base 152 is locked to the upper drawer body 153 by a lock lever (not shown).

When making copies using a desk with a built-in copying machine configured as described above, the upper drawer 1 should be opened as shown in Figure 1.
02 in the direction of the arrow, close the lower drawer part 103, and lock both drawers so that they do not move.
A document is placed on the document placement surface 111. When a copy start button (not shown) is pressed, the document reading section 112 moves under the document placement surface 111 to a position 112a on the opposite side.
Scan and read the document contents. The read information is converted into an electrical signal, subjected to signal processing as necessary, and sent to the writing device 123. Based on this signal, the writing device 123 sends an optical strength signal to the charging device 12 in advance.
2 to form an electrostatic latent image on the uniformly charged belt-shaped photoreceptor 121. The formed electrostatic latent image is visualized by adhesion of toner in the developing device 131.

On the other hand, as the reading device 112 and the belt-shaped photoreceptor 121 are started, the half-moon-shaped paper feeding roller 142 rotates, and only the topmost sheet is sent to the pair of transport rollers 143 and 144 located downstream. This pair of transport rollers 143 and 144 cooperates with a pair of rollers 145 further downstream, and the paper is conveyed to a pair of registration rollers 146. At this time, the paper detection sensor 147
The paper is controlled by the signal obtained from the roller pair 145 and the registration roller pair 146, and the paper is temporarily stopped in a state where it is slightly bent.

The paper is sent from the registration roller pair 146 to the transfer device 124 in synchronization with the leading edge of the image on the belt-shaped photoreceptor 121.
Here, the image on the belt-shaped photoreceptor 121 is transferred. The transferred paper is transferred to the fixing device 1 via the belt conveying device 132.
33, and the toner image is fused onto the paper by high temperature and pressure.

The paper is discharged from the fixing device 133 onto a tray 135 via a paper discharge roller 134, and a series of copy processing operations is completed.

Note that although the reading of the original image and the formation of the electrostatic latent image in the above-described embodiments are based on digital image processing, analog type image processing that optically guides the light reflected by the original to the photoreceptor may also be used. good.

When the copying machine is not in use, both the upper drawer section 102 and the lower drawer section 103 are kept closed, as shown in FIG. Further, when replenishing the paper storage section 141 with paper, only the lower drawer section 103 is pulled out in the direction of the arrow as shown in FIG. At this time, it is desirable to use a lock mechanism or sliding resistance to make it difficult for the drawer to move.

The lower drawer section 103 only has a lower conveyance roller 144 and a lower guide plate 149 in the paper feeding mechanism.
Paper can be easily replenished from above without anything blocking the paper supply.

Since the mechanism of the copying machine is divided into two drawers and built-in, maintenance can be carried out by pulling out only the necessary drawers. The part that particularly requires maintenance is the image forming section, which can be easily operated by pulling out the upper drawer section 102 from either the top or bottom surface.

Furthermore, since each drawer can be removed from the desk, repairs and parts replacement are easy, and the device itself can be easily replaced.

If a jam occurs in the paper transport path, open the upper drawer section 1.
02 and with the lower drawer section 103 closed, release the lock lever that locks the lower base 152 of the upper drawer section 102 at the front. As shown in FIG. 4, the lower base 152 rotates in the direction of the arrow about the pivot shaft 151 located at the rear as a fulcrum, and the paper conveyance path is released. At this time, a paper discharge roller 134, a pair of fixing rollers 133, a pair of registration rollers 146, and a pair of rollers 145 are in pressure contact to convey the paper.
Then, the upper conveyance roller 143 and the lower conveyance roller 144 are all separated, and the jammed paper can be easily removed.

The lower base 15 also rotates to release the paper conveyance path.
1 supports only the lower part of the paper conveyance path;
Since the parts that require strict precision, the image forming part, etc. that have a large volume and weight are provided in the upper drawer main body 153, a simple rotation mechanism is required, and there is no fear that problems will occur due to rotation.

(Effects of the Invention) As explained above, in the desk with a built-in copying machine of the present invention, the image forming section, document placement section, etc. of the copying machine and the paper storage section are divided into two upper and lower drawer sections. Since it is built-in, repairs, parts replacement, etc. can be easily performed by pulling out the necessary drawer sections as needed.Replenishment of paper is also extremely simple as only the lower drawer section provided with the paper storage section can be pulled out.

In addition, the structure allows copies to be made with the upper drawer pulled out and the lower drawer closed, so copies can be made without using the desk space, making effective use of the desk space. .

Furthermore, since the lower side of the paper transport path is opened when the upper drawer is pulled out, it is easy to remove paper even if a paper jam occurs, and the opening mechanism is not limited to the structure of the copying machine. It can be made simple.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view from the side showing a copying machine according to an embodiment of the present invention when it is in use, FIG. 2 is a schematic sectional view showing the same copying machine in a stored state when not in use, and FIG. This figure is a schematic sectional view showing a state in which paper is supplied, and FIG. 4 is a schematic sectional view showing a state in which the paper conveyance path is opened. Explanation of symbols 101--Desk 102- Upper drawer section 1
03--lower drawer section i t t--original placement surface 112---1 original reading section 121---belt-shaped photoreceptor 122-1--charging device 123-- writing device 124---1 transfer device 131・-Developing device 132-
111 belt conveyance device 133- fixing device 135-
) - Ray 141 - Paper storage section 143 - Upper conveyance roller 144 - Lower conveyance roller 146 - Registration roller pair 151 - Co-movement shaft 152 - Lower base 153 - Upper drawer main body

Claims (4)

[Claims] (1) It is built into two upper and lower drawers in a desk, and the upper drawer has a document placement section, a main part of a paper feeding mechanism, an image forming section, and a fixing paper ejection section; A desk with a built-in copying machine, characterized in that a lower drawer section has a paper storage section and a part of a paper feeding mechanism. (2) In claim 1, the main part of the paper feeding mechanism of the upper drawer and a part of the paper feed mechanism of the lower drawer are continuous when only the upper drawer is pulled out. A desk with a built-in copying machine characterized by being placed at a position forming a paper conveyance path. (3) In the above claims 1 and 2, the portion constituting the lower side of the paper conveyance path in the upper drawer section is attached to a lower base rotatably coupled to the upper drawer section main body and its rear part. A desk with a built-in copying machine. (4) In any one of claims 1, 2, and 3, provided in a paper transport path from the paper storage section to paper ejection,
A desk with a built-in copying machine, characterized in that one roller of all pairs of rollers that nip and convey paper is attached to the lower base.