JPH0396967A - Recording device - Google Patents

Abstract

PURPOSE:To prevent an opening/closing cover from being opened carelessly by providing a release preventing means which prevents a cover releasing means from operating when a tray is mounted on the opening/closing cover. CONSTITUTION:A recording sheet discharge tray 27 is fitted to a device main body by locking engagement projections 27a, provided at both ends in the width direction of a recording sheet, in engagement grooves 48 nearby a recording sheet discharge opening, and also detached by disengaging the projections. Further, a release preventive plate 27 as the release preventing means which inhibits a release lever 38 from being operated by covering a through hole 35a having the button part 38b of the release lever exposed when the tray 27 is fitted is provided integrally on one side of the discharge tray 27. Therefore, the release lever 38 can not be operated unless the recording sheet discharge tray 27 is detached and the opening/closing cover 35 can not be opened.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a recording device used in a facsimile machine, a copying machine, etc. The present invention relates to a recording device that can prevent such problems from occurring.

<Prior Art> Today, image recording devices such as facsimile machines and copying machines are widely used. The camera is exposed to remove jammed recording sheets during recording, and to replace developing toner.

Further, in the recording apparatus, a recording sheet discharge tray is generally detachably attached to the opening/closing cover, and the recording sheet on which an image has been recorded is discharged to the tray.

Problems to be Solved by the Invention In the device configured as described above, the opening/closing cover can be opened even with the ejection tray attached, but if the opening/closing cover is opened with the tray attached, the ejection tray may be damaged. Or, the tray may get in the way, leaving the opening/closing cover half-open.

When a method of recording by exposing a photosensitive drum to light is used as a recording means, the photosensitive drum is sometimes shielded from light in conjunction with the opening and closing of an opening/closing cover.
When the opening/closing cover is in a half-open state, the photosensitive drum is not completely shielded from light, and the drum may be damaged. Furthermore, if a developer cartridge or the like is forcibly replaced with the cover half open, the cartridge may come into contact with the cover, frame, etc. during the operation, and the cartridge may be damaged.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and provide a recording device in which the cover cannot be opened without removing the tray.

<Means for Solving the Problems> A typical means according to the present invention for solving the above problems includes a device main body having a recording means for recording an image on a recording sheet, and a device that can be opened and closed with respect to the device main body. a cover that can be opened and closed, a cover release means for releasing the closed state of the opening and closing cover with respect to the apparatus main body, a tray that is detachable from the opening and closing cover and for placing the recording sheet; The present invention is characterized in that a release prevention means is provided for preventing the cover release means from being operated when the tray is attached to the opening/closing cover.

<Operation> In the above means, the cover release means cannot be operated when the tray is attached to the opening/closing cover, and the tray must be removed in order to open the opening/closing cover.

Therefore, it is possible to prevent the opening/closing cover from being erroneously opened with the tray attached.

<Embodiment> Next, an embodiment of the present invention in which the above means is applied to a facsimile machine will be described.

FIG. I is a perspective explanatory view of a manual feeding portion and a discharge portion of a recording sheet, FIG. 2 is an explanatory cross-sectional view of the entire apparatus, and FIG. 3 is a perspective explanatory view of the entire apparatus.

First, the overall structure of this apparatus will be explained. A is a document reading means that reads information written on a document, converts it into an electrical signal, and transmits it to a predetermined recording system. Further, B is a recording means, which records an image on a recording sheet that is conveyed in accordance with an image signal. Furthermore, C is a recording sheet conveying means, which conveys the recording sheets stored in the cassette or the recording sheets fed from the manual feed port to the recording means B, and discharges the sheets after recording.

In FIG. 3, D is an operation panel provided with the number of recording sheets, recording density, transmission switch, etc., and E is a telephone set. This recording device has several storage shelves inside and is placed on a device W mounting table G that can store spare recording sheets and the like by opening and closing a door F.

The configuration of each part of this recording apparatus will be explained in order below.

[Manuscript reading means]

As shown in FIG. 2, the structure of the document reading means A is such that a document placing table 1 is formed on the top surface of the device, and documents are stacked on this placing table 1 with their surfaces facing down, and are guided by side guides 2. Among the original documents 3, the lowest document 3 is preliminarily conveyed by a preliminary conveyance roller 4a and a pressure contact member 4b that is in pressure contact with this, and a separation roller 5a and a pressure contact member 5 that is in pressure contact with this.
The structure is such that the sheets are separated one by one at point b and fed in the direction of arrow a in FIG. The separated and fed document 3 is then conveyed by a conveyance roller 6a and a pinch roller 6b pressed against the pinch roller 6b by a spring 7, and the document surface is read by a pressing member 8b made of a white polyester film that is pressed downward by a weight shaft 8a. It is pressed against the glass 8C, and when passing through the glass 8C, light from the light emitting member 8d such as an LED is irradiated, and the reflected light from the document surface passes through the lens 8e to the C.
It is configured such that an image written on a document is converted into an electrical signal by focusing on a photoelectric conversion element 8f such as a CD. In this embodiment, a contact type reading sensor using a short focus imaging lens is used as the lens 8e.

The document 3 whose image has been read by the optical means is discharged onto the document discharge tray 1o by a discharge port roller 9a and a Vinci roller 9b pressed against the discharge port roller 9a by a spring 7.

[Recording means]

Recording means B is configured as a laser beam printer in this embodiment. To explain its structure, a charger 1 is disposed around a photosensitive drum 1) rotating in the direction of arrow b.
2, the drum surface is charged, and light from a laser oscillator 13 that emits a laser beam in accordance with an image signal is reflected by a polygon mirror 14 and exposed to the rotating drum 1) to form an electrostatic latent image. , the latent image is made visible by toner in the developing section 15. Further, the toner image is transferred and recorded onto a recording sheet 17 that is conveyed between the photosensitive drum 1) and a transfer roller 16 that is in pressure contact with the photosensitive drum 1). Further, the photosensitive drum 1) after toner transfer is configured to be cleaned by a cleaning member for one day.

The photosensitive drum 1), the charger 12, the developing section 15, and the cleaning member 18 are housed in a recording cartridge 19, which is detachably housed in the main body of the apparatus as described later.

[Recording sheet conveyance means]

Next, to explain the recording sheet conveyance means C, a cassette 20 is detachably attached to the lower part of the main body of the apparatus, and recording sheets 17 made of cut sheets are stacked and stored in this cassette 20. .

As shown by arrow C in FIG. 2, this recording seam 7 is fed by a half-moon-shaped feed roller 21, and is registered and conveyed by a pair of cassette conveyance rollers 22a and 22b pressed against each other. Furthermore, the photosensitive drum l1 is transported by a pair of conveying rollers consisting of a drive roller 23a and a pinch roller 23b.
The sheet 17 is conveyed in synchronization with the rotation of the photosensitive drum 1l and an image is recorded when passing between the photosensitive drum 1l and the transfer roller 16.
The toner image is fixed by applying heat and pressure when the toner image passes between the fixing roller 25a having a built-in heater 24 and the pressure roller 25b in pressure contact with the fixing roller 25a, and the toner image is fixed to the discharge port-ra pair 26a, 26.
The recording sheet is ejected to a recording sheet ejection tray 27 by means of b.

In addition, in Figure 2, there is a manual feed port 2 on the left side of the main body of the device.
8 is formed, and a manual feed tray 29 serving as a sheet supply tray is attached to this manual feed port 28. This manual feed tray 29 is rotatably attached around a shaft 30, and when in use, the tray 29 is folded down as shown in FIG.
When the recording sheet 7 is placed on it and fed from the manual feed port 28, it is separated one by one by the separating member 31 that is in pressure contact with the drive roller 23a, and the pair of conveying rollers 23a, 23b
The recording medium is conveyed to the recording position by the following.

[Manual Feed Tray and Auxiliary Tray] Here, the manual feed tray 29 will be specifically explained. As shown in FIG. , is configured to guide the side edge of the recording seam 7 placed on the tray 29. Further, a fitting recess 29c is provided at the rotating tip of the tray 29.
This fitting concave portion 29c has a fitting convex portion 32 of the auxiliary tray 32.
A is configured so that it can be fitted. That is, the fitting convex portion 3 of the auxiliary tray 32 is inserted into the fitting concave portion 29c of the manual tray 29.
By fitting 2a, the auxiliary tray 32 can be connected to the manual tray 29, and by pulling out the auxiliary tray 32, it can be removed from the manual tray 29.

Therefore, when the size of the recording sheet 17 to be placed on the manual feed tray 29 is long, the auxiliary tray 3 is placed on the manual feed tray 29.
2, the recording sheet opening 7 can be reliably placed on the tray and manual feeding can be performed. Furthermore, when the size of the recording sheet 17 is short, by removing the manual feed tray 29, wasted space for stacking recording sheets can be eliminated. It can be removed and stored compactly, without creating wasted space in the device body or increasing the size of the entire device.

Further, on the lower surface of the recording sheet ejection tray 27 located above the manual feed tray 29, locking members 33 in the shape of a hook are protruded at intervals slightly wider than the width of the auxiliary tray 32, as shown in FIG. There is. This locking member 33 constitutes a housing section for the auxiliary tray 32, and holds the auxiliary 1/ray 32 removed from the manual feed tray 29 on the tapered side (
As shown in FIGS. 2 and 3 from the left end side in FIG. ing.

By providing the accommodating portion for the auxiliary tray 32 as described above, the auxiliary tray 32 removed from the manual tray 29 does not get in the way and can be prevented from being lost. In general, the width and length of the ejection tray 27 are such that the ejection tray 27 can accommodate the recording sheets 17 loaded on the manual feed tray 29.
Since the paper is to be loaded again, the manual feed tray 29
By providing the storage section on the lower surface of the recording sheet ejection tray 27 located above the manual feed tray 29, the two are accommodated so as to overlap, thereby saving space. Can be stored compactly. Further, there is no need to add a special space to the main body of the apparatus as an auxiliary tray accommodating section.Furthermore, since the auxiliary tray accommodating section is accommodated near the manual feed tray 29, the storage location is easy to identify and handling becomes easy.

[Recorded size switch]

Further, as shown in FIG. 1, the manual feed tray 29 has recording sheets to be manually fed on the inner side of the device and outside the fixed guide 29a, that is, outside the area where the recording sheets 17 are placed. A size switch 34 for manually adjusting the size of the eyes 7 is provided. In this embodiment, this switch 34 is constructed so that three types of size can be manually selected: 1) A4 size, 2) letter size (LTR), and 2) legal size (LGL).

As a result, the operator inputs the size of the recording sheet 17 placed on the manual feed tray 29 using the size switch 34,
When recording is executed, the recording means B performs recording according to the recording sheet size. This eliminates the need for a sensor to detect the size of the recording sheet opening 7, as well as extra space and a display device for indicating the recording sheet size on the operation unit, reducing the number of parts, downsizing the device, and reducing costs. It is possible to aim for

The size switch 34 is provided on the inner side of the manual feed tray 29 and on the back side of the tray opening/closing handle. 34 is located at a visual position near the operating position, so that the operator does not forget to input the size.

[Opening/closing cover]

Furthermore, the recording apparatus is constructed so that the recording cartridge 19 can be replaced. Therefore, in FIG. 2, the left side surface of the main body of the apparatus is configured as an open/close cover 35.

To explain this specifically, the opening/closing cover 35 is attached to be rotatable around a rotation pin 36, and
A release lever 38 is attached to a predetermined position of 5, as shown in FIG. 1, and is rotatable about a shaft 37. This release lever 38 constitutes a release member for releasing the closed state of the opening/closing cover 35, and has a hook portion 38a that engages with the chassis 39 of the device main body at one end, and a hook portion 38a at the other end. A release button portion 38b is formed.

Torsion coil spring 4 attached to rotation shaft 37
When the hook portion 38a is locked to the chassis 39 by the bias of 0, the opening/closing cover 35 is held in the closed state, and when the release button portion 38b is pulled up in the direction of the arrow e in FIG. The locked state of 38a is released,
The opening/closing cover 35 is configured to be openable. The release button portion 38b is configured to be exposed through the through hole 35a of the opening/closing cover 35 so that it can be operated by an operator.

A manual feed tray 29, a drive roller 23a, a transfer roller 1G, a fixing roller 25a, a pressure roller 25b, and discharge rollers 26a, 26b are attached to the opening/closing cover 35, and as shown in FIG. When the cover 35 is opened, the members attached to the cover 35 are separated from the main body of the apparatus. Therefore, the opening/closing cover 3
When opening 5, the recording cartridge 19 is exposed, and the cartridge 19 can be replaced.

[Relationship between the opening/closing cover and the recording cartridge] Here, the relationship between the recording cartridge 19 and the opening/closing cover 35 will be explained. On both sides of the recording cartridge 19, as shown in FIGS. 2 and 4, locking protrusions 19a are provided. is provided protrudingly, and the protruding strip 19a is provided in the cassette accommodating portion 41 of the main body of the device.
A locking groove 41a is formed into which the locking groove 41a can be slidably inserted. Therefore, open the opening/closing cover 35, hold the handle 19b of the exposed recording cartridge 19, and remove the cartridge cartridge 19.
By inserting and removing the cartridge 9, the recording cartridge 19 can be replaced with respect to the main body of the apparatus.

Further, the recording cartridge 19 is provided with a light-shielding shutter 19c that can be opened and closed about a shaft 19c+ for protecting the photosensitive drum 1). This light-shielding shutter 19c opens automatically when the opening/closing cover 35 is closed, and the photosensitive drum 1
) and the transfer roller 16 are brought into pressure contact, and when the opening/closing cover 35 is opened, it is automatically closed to shield the photosensitive drum 1) from light.

The interlocking mechanism between the light shielding shutter 19c and the opening/closing cover 35 is constructed as shown in FIG. To explain this in the case of closing the opening/closing cover 35, a rod 43 is pivotally supported by a shaft 42 on the opening/closing cover 35.
There is a pull bar at the tip of the r. A rack 45 biased by 44 is in contact with the rack 45 . This rack 45 has pins 46a,
46b to the main body of the device, and the opening/closing cover 3
When the rod 43 slides in the direction of the arrow f, the rack 45 slides in the direction of the arrow g, and the pinion 47 meshed with the rack 45 rotates in the direction of the arrow h, so that it is placed on the pinion arm 47a. The pin 19Cz of the light-shielding shutter 1.9c is lifted in the direction of arrow i, and the light-shielding shutter 1.9c is opened. Furthermore, when the opening/closing cover 35 is opened, the bottle 19C2 moves in the opposite direction to the above-mentioned movement, and the rotation center axis 19c of the light shielding shutter 19c moves.
, l are lowered by the bias of torsion coil springs 19c4 provided on them, and the shutter 19c closes.

[Relationship between the opening/closing cover and the recording sheet ejection tray] As mentioned above, the opening and closing of the light shielding shutter 19c is linked to the opening and closing of the opening/closing cover 35, so when removing the recording cartridge 19, the opening/closing cover 35 must be completely opened and the light shielding shutter 19c must be opened and closed.
It is preferable to take it out in a completely closed state. Therefore, in this embodiment, the release lever 38, which is a means for releasing the closed state of the opening/closing cabinet 35, cannot be operated unless the recording sheet ejection tray 27 attached to the opening/closing cabinet 35 is removed.

Specifically, as shown in FIG. 1, the recording sheet ejection tray 27 is inserted into the main body of the apparatus by engaging the locking protrusions 27a provided at both ends in the sheet width direction with the locking grooves 48 located near the recording sheet ejection date. It is configured such that it can be installed and removed by releasing the lock, and furthermore, the ejection tray 27 can be removed.
On one side, there is a release prevention plate 27b which covers the through hole 35a where the button part 38b of the release lever 38 is exposed when the tray 27 is attached, and serves as a release prevention means to prevent the release lever 38 from being operated. It is integrated. Therefore, the release lever 38 cannot be operated unless the recording sheet ejection tray 27 is removed, and the opening/closing cover 35 cannot be operated.
I can't open it.

If the opening/closing cover 35 is opened with the recording sheet ejection tray 27 still attached, it will come into contact with the installation floor and the ejection 1 and tray 2
7 is damaged or the tray 27 gets in the way, making it impossible to open the opening/closing cover 35 completely. At this time, the light-shielding shack 19c may not be completely closed, and the photosensitive drum 1) may be exposed to light. However, in this embodiment, the opening/closing cover 38 cannot be opened unless the recording sheet ejection tray 27 is removed, so this problem does not occur. Further, since the recording cartridge 19 is not forcibly removed in the half-opened state, problems such as damage to the recording cartridge I9 do not occur.

[Space for taking out the recording cartridge] Next, the space for taking out the recording cartridge 1 and the cartridge 19 in the above-mentioned apparatus will be explained. As mentioned above, this recording apparatus is configured so that it can be taken out by opening the opening/closing case 35.
A document output tray 10 is provided above the opening/closing cover 35. Therefore, the space below the document ejection tray 10 is used to take out the recording cartridge 19 as shown in FIG. 4, and a unique projection space is required to take out the recording cartridge 19 when installing the apparatus. do not. Therefore, it is possible to reduce the installation space of the device.

[Cassette drawer space]

Next, the drawer space of the cassette 20 containing the recording sheet 17 will be explained.

As described above, the cassette 20 is removably housed in the lower part of the main body of the apparatus. As shown in FIG. 2, slide protrusions 20a are protruded from both outer surfaces of the cassette container, and a cassette accommodating section 49 is formed at the bottom of the device with an opening on the side where the document ejection tray 10 is attached. , the slide protrusion 2 is provided on the inner wall of the accommodating portion 49.
A guide groove 49a into which Oa can fit and slide is formed.

Therefore, the cassette 20 can be set by fitting the slide protrusion 20a into the guide groove 49a and pushing it in from the left side of FIG. 2, and when taking it out, the cassette 2
It can be taken out by holding the handle 20b formed at 0 and pulling it out to the left in FIG.

As mentioned above, since the ejection of the cassette 20 is performed below where the document ejection tray 10 is provided as shown in FIG. There is no need to provide space, and the installation area of the device can be reduced.

[Manual feeding and ejection space for recording sheet] In the apparatus of this embodiment, the projection space for ejecting the document is also effectively used as a space for manually feeding and ejecting the recording sheet 17.

That is, as shown in FIG. 2, a recording sheet ejection tray 27 is arranged above the manual feed tray 29, and a document ejection tray 10 is arranged above the ejection tray 27.

Therefore, the manual feed tray 29 and the recording sheet output tray 2
7 is located within the projection space of the document ejection tray 10, and the space below the document ejection tray 10 is effectively utilized. Therefore, as in the case described above, there is no waste of space, and the installation area of the device can be reduced.

[Arrangement of fixing means and document reading means] Furthermore, in the apparatus of this embodiment, as shown in FIG. The document reading means A is configured as shown in FIG.
are placed. At this time, the light emitting member 8d of the reading means A,
A heat insulating means is provided to prevent damage to optical components such as the lens 8e and the photoelectric conversion element 8f.

In this embodiment, the heat insulating means includes a fixing roller 25a,
A heat insulating member 50 such as felt is provided between the reading means A located above the heater 24 and the reading means A is insulated from the heat of the heater 24, so that the heat does not adversely affect the optical components. are doing.

By providing the heat insulating means as described above, the reading means A having optical components can be placed above the fixing means, and the lateral dimension of the apparatus can be reduced to reduce the installation area. In addition, this causes the recording sheet to be disposed above the recording sheet ejection tray 27 provided near the fixing means.
Original output tray 10 provided near the reading optical component
This makes it easy to place.

[Other Examples]

In the embodiment described above, the release prevention plate 27b formed on the recording sheet ejection tray 27 prevents the button portion 38b of the release lever 38.
Although an example was shown in which the
As shown in the figure, a locking hole 38b+ is formed in the button portion 38b of the release lever 38, and a locking protrusion 27c that can be fitted into the locking hole 38b is provided on the recording sheet ejection tray 27,
It may be configured such that when the tray 27 is attached to the opening/closing cover 35, the locking protrusion 27c fits into the locking hole 38b1.

Even in the above configuration, the locking protrusion 27c is connected to the locking hole 38b 1
The release lever 38 cannot be operated when the person is stuck in the tray, and the opening/closing cover 35 can be prevented from being opened with the tray 27 still attached.

Furthermore, although the above-mentioned embodiment has been explained using a facsimile machine as an example, it is obvious that the present invention can be applied to other recording devices such as a copying machine, and the present invention can also be applied to a recording device that uses a recording means that does not use a photosensitive drum. It is also possible.

Furthermore, in the embodiment described above, the recording sheet ejection tray 27 is configured to be removably attached to the opening/closing cover 35, and the tray 27 is provided with a means for preventing release of the release lever 38. The tray having this need not be limited to a recording sheet discharge tray, but may also be a recording sheet supply tray or the like.

<Effects of the Invention> As described above, the present invention is provided with a release prevention means for preventing the cover release means from being operated when the tray is attached to the opening/closing cover. It is possible to prevent the opening/closing cover from being opened inadvertently.

Therefore, it is possible to prevent the tray from being damaged or the opening/closing cover to be left in a half-open state by opening the cover, thereby preventing damage to the photosensitive drum or the like or the recording cartridge.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the structure of the feeding and ejecting part of the recording sheet.
Fig. 2 is a cross-sectional explanatory diagram of the overall structure of the device, Fig. 3 is a perspective explanatory diagram of the overall appearance, and Fig. 4 is an explanatory diagram of the state in which the opening/closing cover is opened.
Figure 5 is an explanatory diagram of the interlocking mechanism of the opening/closing cover and the light-shielding shutter.
FIG. 6 is an explanatory diagram of the state in which the cassette is pulled out, and FIG. 7 is an explanatory diagram of another embodiment of the release preventing means for the release lever. A is a document reading means, B is a recording means, C is a recording sheet conveying means, D is an operation panel, E is a telephone, F is a door, G
is the loading table, 1 is the document il2 loading table, 2 is the side guide, 3
is a document, 4a is a preliminary conveyance roller, 4b is a pressure contact member, 5a
is a separation roller, 5b is a pressure contact member, 6a is a conveyance roller, 6
b is a pinch roller, 7 is a spring, 8a is a weight shaft, 8b is a pressing member, 8C is a reading glass, 8d is a light emitting member, 8
e is a lens, 8f is a photoelectric conversion element, 9a is an exit port-ra,
9b is a vinyl roller, 10 is a document discharge tray, 1) is a photosensitive drum, 12 is a charger, 13 is a laser oscillator, 14
is a polygon roller, 15 is a developing section, 16 is a transfer roller,
17 is a recording sheet, 1B is a cleaning member, 1゛9 is a recording cartridge, 19a is a locking protrusion, 19b is a handle,
19c is a light shielding shutter, 19C1 is a shaft, 19cz is a pin, 19c3 is a shaft, 19c4 is a torsion coil spring, 20 is a cassette 1-, 20a is a slide protrusion, 20b is a handle, 2
1 is a feeding roller, 22a, 22b are cassette conveying rollers, 23a, 23b are conveying rollers, 24 is a heater, 25a
25b is a fixing roller, 25b is a pressure roller, 26a and 26b are discharge ports, 27 is a recording sheet discharge tray, 27a is a locking projection, 27b is a release prevention plate, 27C is a locking projection, 28
29 is a manual feed port, 29 is a manual feed tray, 29a is a fixed guide, 29b is a slide guide, 29c is a fitting recess, 30 is a shaft, 31 is a separation member, 32 is an auxiliary tray, 32a is a fitting protrusion, 33 is a key shape A locking member, 34 is a size switch,
35 is an opening/closing cover, 35a is a through hole, 36 is a rotating pin,
37 is a shaft, 38 is a release lever, 38a is a hook portion, 38
b is a release button part, 38b+ is a locking hole, 39 is a chassis, 40 is a torsion coil spring, 41 is a cassette accommodating part, 4
1a is a locking groove, 42 is a shaft, 43 is a rond, 44 is a tension spring, 45 is a rack, 46a, 46b are pins, 47
47a is a pinion, 47a is a pinion arm, 48 is a locking groove portion, 49 is a cassette accommodating portion, 49a is a guide groove, and 50 is a heat insulating member.

Claims (2)

[Claims] (1) An apparatus main body having a recording means for recording an image on a recording sheet, an opening/closing cover that can be opened and closed with respect to the apparatus main body, and a cover release means for releasing the closed state of the opening/closing cover with respect to the apparatus main body. a tray that is detachable from the opening/closing cover and for placing the recording sheet thereon; and a release prevention means for preventing the cover releasing means from being operated when the tray is attached to the opening/closing cover. A recording device having: (2) The recording apparatus according to claim 1, wherein the release prevention means is formed integrally with the tray and is configured to cover the cover release means.