JPS61118771A - Image forming device - Google Patents

Abstract

PURPOSE:To improve operativity by providing a sheet member which serves as an original presser for pressing an original placed on an original platen on the top surface of a desk, and also providing an image forming device which picks up the image of the original in a drawer provided to the desk. CONSTITUTION:The copying machine body 51 is stored in the dedicated drawer 52, which is set in the drawer storage part 36 of an office desk 31 in this state as a substitute for its own drawer 43 so that it is drawn out and inserted, so the main body 51 never impedes office work and easily drawn out with the drawer 52. Further, a cover glass 46 is used as the original platen in common and a surface on which an original is written is within the top surface of the desk 31, so an operator takes a copy on a chair. The original is pressed with part of an elastic sheet 49 for writing, and consequently even if the desk is used in a normal state, there is no obstacle on the desk 31, so the operativity is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an image forming apparatus such as an electronic copying machine or a facsimile machine.

[Technical background of the invention and its problems]

Conventionally, electronic copying machines and the like have generally been used by being installed on a dedicated table, but in recent years, due to rapid miniaturization, many machines have been used on desks. This compact tabletop copying machine is convenient enough to be placed on a general office desk for quick use by office workers, and is also useful for making special copies*
Since there is no need to install an i or a dedicated stand, there are many advantages such as being useful for utilizing effective space in the office.

Here, the recent compact electronic copying machine for tabletop use will be explained based on FIG. Further, a drum-shaped photoreceptor 3 that rotates in a predetermined direction is pivotally supported in a substantially central shaft inside the main body 1, and an exposure optical system 4 is provided between this photoreceptor 3 and the document mounting table 2. There is. In this exposure optical system 4, a scanning lamp 5 and a scanning mirror 6 scan the original on the original placing table 2 at a predetermined speed, and a guide mirror 7.8 uses the scanning mirror 6 to keep the optical path length constant. It reciprocates in synchronization with the rotation of the photoreceptor 3 while moving at half the speed of the photoreceptor 3. The document on the document table 2 is illuminated by a scanning lamp 5, and the reflected light is guided onto the photoreceptor 3 by a mirror 6, 7, 8, 9 and a lens 10 to form an image of the document. There is. Further, from this image forming position, the developing device 11, the transfer charger 12,
A peeling charger 13, a cleaning device 14, and a charging charger 15 are provided.

Further, at the bottom of the main body 1, there is provided a transfer path 16 for the copy paper p passing through a transfer section between the photosensitive member 3, the transfer charger 12, and the peeling charger 13. Upper and lower paper feed cassettes 17.1 provided in
The copy paper p independently fed from the copy paper 8 is transferred to a paper discharge tray 20 provided on the other side of the main body 1 via the transfer section and the fixing device 19.

First, the photoreceptor 3 is charged to a predetermined potential by corona discharge by the charger 15, and then exposed by the exposure optical system 4, thereby forming an electrostatic latent image corresponding to the original. This electrostatic latent image is developed by the developing device 11.
An agent is applied and developed, thereby forming a toner imager. This developer image is transferred onto a copy paper p in a transfer section by a transfer charger 12, the copy paper p to which this developer image has been transferred is peeled off from the photoreceptor 3 by a peeling charger 13, and the developer image is transferred in a fixing device 19. After the image is fixed, the paper is discharged to the paper discharge tray 2o. On the other hand, the photoreceptor 3 after the transfer starts the next copying process after the developer remaining on the photoreceptor 3 without being transferred onto the copy paper p is removed by the cleaning device 214.

Compact desk-top electronic copying machines like this one are still becoming smaller and smaller, and as mentioned above, they can be placed on general office desks and used easily, and they can also be used in special copying rooms and dedicated stands. Although it has many advantages, such as being useful for making effective use of space in the office without being required, it also has the following disadvantages.

In other words, the electronic copy line is not small in diameter and occupies a corner of the top of the office desk, and cannot be easily moved, so the office work space on the office desk becomes narrow. Since the copying machine gets in the way when doing business on the desk, the actual situation is that the copying machine is used as a stand exclusively for the copying machine, and the above-mentioned effects are not effectively utilized. Furthermore, when the copying machine is placed on a desk, the original table of the copying machine is quite high relative to the top of the desk, so copying must be done by standing up from the chair.

(Object of the Invention) The present invention has been made based on the above circumstances, and its purpose is to prevent the device from interfering with office work at the desk, and to allow the user to sit at the desk while sitting on a chair. It is an object of the present invention to provide an image forming apparatus which allows an image forming operation to be performed on the top of a desk while facing the desk and doing office work.

(Summary of the Invention) In order to achieve the above object, the present invention includes a desk, a document mounting table disposed within the upper surface of the desk, a sheet member disposed on the desk, and a document mounting table disposed within the upper surface of the desk. The image forming apparatus includes a drawer and an image forming apparatus main body that is housed in the drawer and captures an image of a document placed on the document placement table, and the sheet member is configured to capture an image of the document placed on the document placement table. It is characterized in that it also serves as a document holder.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 9.

The second desk 1 is an existing general office desk that is often found in the offices of ordinary companies. On the lower side of the top plate 32 of this desk 31, in the center and on both sides, there are a plurality of drawer storage parts 33, 34, 35, 3 of various sizes with openings on the front side.
6.37 are provided, and each storage section 33.34
, 35°, 36.37, drawers 38, 39, 40, 41, and 42 of corresponding sizes are housed in drawers that can be inserted and removed. Also, each drawer 38, 39.40°41.4
Handles 44 are formed on the front plate portions 43 of No. 2. Also, on the right side of the top plate 32, there is a drawer storage section 36.
A window 45 is formed facing the top plate 32.
A general cover glass (cover member) 46 that also serves as a document placement stand is drawn on one side of the top, and as shown in the first cause, the part of this cover glass 46 corresponding to the above lI45 is the place where the document is placed. Section 47. Further, a positioning scale 48 is fixed on the cover glass 46 for positioning the document at the front edge of the document placement section 47. Furthermore, an elastic sheet (sheet member) 49 for writing is placed on the cover glass 46 and also serves as a document presser for holding down the document placed on the document placement section 47.
A handle 5 is provided on the side of the document placement section 47 of this elastic sheet 49.
0 is set. In addition, as shown in FIGS. 4 and 5, the drawer storage section 36 facing the window 45 has
In place of the existing drawer 41 that was housed there, a dedicated drawer 52 that accommodates a copying machine body (image forming apparatus body) 51 can be housed therein.

This dedicated drawer 52 has substantially the same structure as the existing drawer 41 described above, but is interesting in that a cassette attachment/detachment 56 and a paper ejection port 57 are formed on the front plate portion 55 with a handle 54 of the drawer box 53. Become.

Further, as shown in FIG. 1, a guide rail 58 is provided at the bottom of the drawer storage section 36, a step 59 is provided at the rear of the guide rail 58, and a guide roller 60 is provided at the front. ing. On the other hand, a guide rail 61 is provided at the bottom of the dedicated drawer 52 to be guided by the guide roller 60 of the drawer storage section 36, and the front part thereof is provided with a step 59 of the drawer storage section 36.
A step 62 corresponding to the above is provided, and a guide roller 63 that is guided by the guide rail 58 of the drawer storage section 36 is provided at the rear. And the sixth
As shown by the imaginary line in the figure, when the dedicated drawer 52 is inserted all the way, the guide roller 63 of the drawer 52 rides up on the step 59 of the drawer storage section 36, and the step 62 of the dedicated drawer 52 moves over the guide roller of the drawer storage section 36. 60, and as a result, the copying machine main body 51 is set higher by the height h of the step 59.62. That is,
The dedicated drawer 52 is guided so that there is a vertical difference between the pushed-in state B (the state shown by the imaginary line in FIG. 6) and the pulled-out state B (the state shown by the solid line in FIG. 6). It is now possible to do so. Further, at that time, the copying machine main body 51 housed therein is adapted to pass through the reinforcing portion 64 of the desk 31.

Next, the copying machine main body 51 will be explained. As shown in FIG. 1, a drum-shaped photoreceptor 65 that rotates in a predetermined direction is pivotally supported approximately at the central shaft inside the copying machine main body 51. An exposure optical system 66 is provided above the photoreceptor 65. In this exposure optical system 66, a scanning lamp 67 and a scanning mirror 68 scan an original on a cover glass 46 at a predetermined speed, and a guide mirror 69
70 reciprocates in synchronization with the rotation of the photoreceptor 65 while moving at a speed 12 times the speed of the scanning mirror 68 to keep the optical path length constant. Then, the original on the cover glass 46 is illuminated by a scanning lamp 67, and the reflected light is reflected by a mirror 68.
69, 70, 71 and a lens 72 to guide the document image onto the photoreceptor 65. Note that the lens 72 is arranged so that an image is formed on the surface of the cover glass 46 when the drawer 52 is pushed in. Further, around the photoreceptor 65, a developer @ 1173, a transfer charger 74, a peeling charger 75, a cleaning device 76, a charging charger 77, etc. are arranged in order from the position 111 along the rotation direction of the photoreceptor 65. has been done.

Further, on the front side of the copying machine main body 51, a paper ejection tray 78 and a paper feed cassette 79 are provided above and below, and the copy paper p stored in the paper feed cassette 79 is taken out by a paper feed roller 80, and the copy paper p is taken out by a paper feed roller 80, and then a registration roller Pair 81, transfer section between photoreceptor 65 and transfer and peeling chargers 74, 75, fixing device 8
2, and the paper ejection tray 7 through the paper ejection roller pair 83.
8.

First, the photoreceptor 65 is charged to a predetermined potential by corona discharge by the charger 77, and then exposed to light by the exposure optical system 66.
ii image is formed. This electrostatic latent image is developed by applying a developer by the developing device 72, thereby forming a developer image. This developer image is transferred onto a copy paper p in a transfer section by a transfer charger 74, the copy paper p to which this developer image has been transferred is peeled off from the photoreceptor 65 by a peeling charger 75, and the developer image is transferred in a fixing device 82. After the image is fixed, the paper is discharged to a paper discharge tray 78. On the other hand, the photoreceptor 65 after transfer
After the developer remaining on the photoreceptor 65 without being transferred onto the copy paper p is removed by the cleaning device @76, the next copying process begins.

Note that the paper feed cassette 79 is attached/detached via the cassette attachment/detachment port 56, and the ejected copy sheets p are accumulated on the paper ejection tray 78 with a portion protruding from the paper ejection port 57. .

According to the above configuration, the copying machine main body 51 is placed in the dedicated drawer 52.
is stored in the drawer storage section 36 of the office desk 31 in that state.
Since the copy machine body 51 can be easily stored in place of the existing drawer 43 there, the copy machine body 51 does not get in the way of office work on the desk 31, and the copy machine body 51 can be easily removed. Since it can be pulled out using the drawer 52, maintenance, service, etc. can be easily performed.

In addition, since the cover glass 46 is also used as a document mounting table,
Since the surface on which the original is placed is within the upper surface of the desk 31, the operator can make copies while sitting on the desk 31. Furthermore, since unnecessary steps are not created on the desk 31, the number of parts can be reduced. In addition, as shown in FIG. 1, a part of the elastic sheet 49 for writing is used to hold down the original, so even when the desk 31 is used in its normal state, the desk 31
Work efficiency is improved because there are no obstructions above.

Further, since the paper feed cassette 79 can be attached and detached and the ejected paper can be removed from the handle 54 side of the drawer 52, the operator can operate it while sitting.

〔Effect of the invention〕

As explained above, according to the present invention, a desk, a document mounting table disposed within the upper surface of the desk, a document mounting table disposed on the desk,
a sheet member that also serves as a document presser for holding down the document placed on the document placement table; and a drawer provided on the desk;
Since the main body of the image forming apparatus is housed in the drawer and forms a second image of the original placed on the original placing table, the apparatus does not interfere with office work on the desk. Moreover, image forming operations can be performed on the top of the desk while sitting in a chair while facing the desk and taking care of business, and furthermore, there are no obstacles on the desk even when the desk is used in its normal state, which improves work efficiency. It has excellent effects such as

[Brief explanation of drawings]

Figures 1 to 9 show one embodiment of the present invention. Figure 1 is a perspective view of an office desk in which the main body of the copying machine is housed in a special drawer, and Figure 5 is a perspective view showing the state in which the dedicated drawer is pulled out, FIG. 6 is a side view showing the same state with main parts cut away, FIG. 9 is an explanatory view of the operation, and FIG. is an internal configuration diagram showing a conventional example. 31... Desk, 43... Drawer, 46... Cover member that also serves as document placement stand (cover glass), 49... Sheet member that also serves as document presser (elastic sheet), 51... Image forming apparatus main body ( copying machine body), 52...dedicated drawer, 54
... Handle, 58 ... Guide rail, 59 ... Step, 60 ... Guide roller, 61 ... Guide rail,
62...Step, 63...Guide roller, 65...
Photoreceptor, 72...lens. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 jI4 Figure 5 Figure 6

Claims (5)

[Claims] (1) a desk, a document placing table disposed within the top surface of the desk, a sheet member provided on the desk and serving as a document presser for holding down the document placed on the document placing table; An image forming apparatus comprising: a drawer provided on a desk; and an image forming apparatus main body accommodated in the drawer and configured to capture an image of a document placed on the document mounting table. (2) The image forming apparatus according to claim 1, wherein a cover member, such as a cover glass, provided on the desk also serves as the document mounting table. (3) The image forming apparatus according to claim 1, wherein the sheet member that also serves as a document presser is an elastic sheet for writing. (4) The desk is configured with guide means for guiding the drawer so that there is a difference in level between the top and bottom when the drawer is pushed in and the drawer is pulled out; A lens is arranged so as to form an image on the surface of a cover member that also serves as a document placement table, and light emitted from the document placed on the cover member that also serves as a document placement table is guided to the photoreceptor through the lens. 2. The image forming apparatus according to claim 1, wherein the image forming apparatus is configured to form an image using the following methods. (5) The image forming apparatus according to claim 1, wherein the image forming apparatus main body is configured such that the paper feeding side and the paper ejection side are located on the handle side of the drawer.