JPS5926745A - Image forming device - Google Patents

Abstract

PURPOSE:To improve operability by having a support means which supports a guide means for guiding a conveyed sheet in the direction of an image carrying body so as to position the same in association to a process unit. CONSTITUTION:A lower transfer guide 11 is provided rotatably around the shaft 17 of a lower resist roll 9b, and the force for ratating the same clockwise by means of a cam 19 via a leaf spring 18 mounted to the guide 11 is applied to the guide 11. The position of the guide 11 with respect to a photosensitive drum 3 is regulated by butting the forward end 11a of the guide 11 to the end parts 16a on both sides of the housing 16 of a process unit U. The cam 19 is turnable around a shaft 23, and if the cam 19 is turned clockwise, the guide 11 turns counterclockwise around the shaft 17 and detaches from the drum 3 so as to go downward to the position where it does not interfere the attachment and detachment of the drum.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a painter forming apparatus having an image carrier and process means acting on the image carrier.

Hereinafter, an electrophotographic copying machine will be described as an example of an image forming apparatus.

Conventionally, in electrophotographic copying machines, the photosensitive drums have often been removed or loaded using the drum shaft in the axial direction, since it is easy to replace the photosensitive drums and to improve accuracy. There is. -1. After the photosensitive drum is loaded into the main body of the copying machine, the drum is prevented from being removed from the main body, and the axial position of the photosensitive drum is regulated;
Furthermore, a centering plate is used to precisely determine the position of the photosensitive drum with respect to the optical system. In addition, around the photosensitive drum, various components such as a developing device, a cleaner, a transfer paper conveyance guide, or a separation device for separating the transfer paper from the photosensitive drum are installed near the drum or in contact with the drum, depending on the process conditions. They are placed in close contact with each other. Therefore, when the photosensitive drum is inserted or removed from the main body for attachment/detachment, it is necessary to release each of these members so as to move away from the photosensitive drum. If the photosensitive drum is attached or detached without releasing each of these members, there is a risk of scratching the surface of the optical drum or, conversely, damaging each member.

Conventionally, therefore, an operation member for releasing each member is disposed in front of the above-mentioned centering plate to prevent the centering plate from coming off unless each member is released, thereby preventing malfunction. Things to prevent malfunction in this case: Although it is possible,
The operation when replacing the photosensitive drum was very cumbersome, as each member had to be released and the centering plate removed before the drum could be attached or detached. In addition, in order to prevent malfunctions, the operating members for releasing each member have been enlarged and placed on the centering plate removal path, but this has resulted in an increase in the number of parts. .

By the way, recently, USP No. 3,985,436 Specification I
As shown in Fig. F, an image forming apparatus has been proposed in which, for example, a photosensitive drum, a developer, a cleaner, a charger, etc. are integrated into one process unit, and when the photosensitive drum is replaced, these are replaced at the same time. ing. In the case of such an apparatus, there is no need to release the developing device or the cleaner when replacing the photosensitive drum. However, it is difficult to integrate the transfer paper conveyance guide with the process unit from the viewpoint of jam removal, etc., and it is necessary to release it from the vicinity of the photosensitive drum when replacing the process unit, as in the past. Therefore, this image forming apparatus also has the above-mentioned problems.

Therefore, the purpose of the present invention is to improve the operation when replacing an image bearing member such as a photosensitive drum, for example. It's about making it easier.

Another object of the present invention is to provide an image forming apparatus with excellent operability without fear of erroneous operation.

Still another object of the present invention is to improve the sheet guide means with an accuracy of J
An image forming apparatus that can perform positioning is provided.

Yet another object of the present invention is to provide an image forming apparatus in which the process unit is unlocked when the main body is opened in sections.

The present invention will be described in more detail below with reference to Examples.

FIG. 1 shows a sectional view of a main body of a copying machine to which an embodiment of the present invention is applied. In the figure, a document mounting table made of a transparent member such as glass is reciprocated along a rail 1 in the direction of arrow a. 2 is a short-focus, small-diameter imaging element array, in which the original image O placed on the original table l is irradiated by the illumination lamp LVc, and the reflected light image is transmitted by the array 2 to the photosensitive drum 3 f. Slit exposure.

Note that this drum 3 has a circumferential surface covered with a photosensitive layer 3a and rotates in the direction indicated by the arrow around s'1tLl3b. Further, 4 is a (i?) electric device, which uniformly charges the photosensitive drum 3 coated with, for example, a zinc oxide photosensitive layer 3a. 2, image exposure is performed to form an electrostatic image corresponding to the original image 0. Next, this electrostatic image 91 is visualized by the developing device 5 consisting of the magnet roller 5a and the toner reservoir 5b. Thereafter, this visible image is transferred onto the sheet 1 by the transfer sheet 71f device 6.The remaining toner 1 on the photosensitive drum 3 is then cleaned by the cleaner 7.

This cleaner 7 includes a rubber blade 7a and a toner reservoir 7.
F).

The sheet t-p rotates at a timing such that it registers with the upper and lower paper feed rollers 8a and 8b and the guide 34, and with the image on the photosensitive drum 3. It is fed in the direction of the drum 3 by the lower registration rollers 9a and 9b while being guided by the upper transfer guide 1o and the lower transfer guard 11.

Then, the sea 1 was sent into contact with the drum 3 [
・P separates one side line when transferring ys bell!・The toner image is transferred while being separated by 3 drums by 12).
After the transfer, it is separated from the photosensitive drum 3 by this belt 12.
You will be guided in the direction you want to go. At the same time, the sheet P guided in the direction away from the drum 3 is separated from the drum 3 by being pinched and conveyed by the rotating separation roller 12a and the roller 12b that rotates following the separation roller 12aK. That is, the sheet l) is separated from the drum 3 by a separating means S having a separating belt 12, a separating roller 12a, and a separating roller 12a.
separated from the surrounding surface.

The sheet P, which is still separated from the drum 3, is guided by the guide 13 and guided to the fixing device [14, where the toner image on the sheet P is fixed, and then sent out of the copying machine main body C by the discharge roller 151C. be discharged.

Note that 'r' is a tray.

It is a housing for the photosensitive drum 3, 'itF 7VL unit 4, developing unit 5,
A cleaner 7, an upper transfer guide 10, and the like are attached to constitute an ori and a process unit U. This process unit U has rails β1 and 12 on the upper body C1 side of the copying machine.
The housing 16 has sliding parts p and β4 that can freely slide. 11b part h-β4 is rail/! 1.l, the unit U can be attached to and detached from the main body of the ventral plane by sliding the upper part.

The unit (U) that has reached a predetermined loading position in the main body of the copying machine is positioned and fixed by a locking means, which will be described later.

Here, the separation belt 12 includes a separation belt hanger 20 fixed at a side end of the lower transfer guide 1125 at a position that does not interfere with conveyance of the sheet, and a shaft 21 fixed to the lower main body C2.
It is attached via a spring 22 to provide a constant tension between the two. Therefore, as will be described later, the separation belt 12 is moved from the operating state in which it is in contact with the photosensitive drum 3 to the state shown in FIG. It is possible to enter a retracted state away from the drum 3.

Now, the lower transfer guide 11 guides the sheet P so that it comes into uniform contact with the drum 3, and prevents the toner image from scattering when the toner image on the photosensitive drum 3 is transferred onto the sheet 1-P. To make it.

Normally 1~ from the photosensitive drum 3 loaded in a predetermined position of the main body
They are provided in the lower body of the copying machine C2IllI at intervals of two strokes. Therefore, this lower transfer guide 1 is used.

Therefore, in this embodiment, the lower transfer guide 11 is rotatably provided around the entire shaft 17 of the lower registration roller 9b, and is rotated clockwise by a cam 19 via a leaf spring 18 attached to the lower transfer guide 11. Transfer force lower guide 11
is giving to And the photosensitive drum 3 of this lower guide 11
The position relative to IK is 9'J1 at the tip of the lower transcription gad 11.
1al process unit) U [both ends 16a of body x6
It is regulated by hitting the target. -Also cam 1
The cam 9 can be rotated by -C around the shaft 23, and as shown in FIG. 2, by rotating this cam 19 clockwise, the lower transfer guide 11 can be rotated counterclockwise around the shaft 17. It is configured so that it moves away from the drum and lowers to a position where it does not affect the attachment and detachment of the drum.

Here, the supported state of the lower transfer guide 11 will be shown using FIG. FIG. 3 is a plan view showing the state in which the lower transfer guide 11 is supported.

In the figure, the shaft 17 of the lower registration roller 9b is the main body ll.
The entire plate 31 is rotatably supported by the upper ledge 31 and is driven by a gear 32 from a 1llfi power source (not shown).

The lower transfer guide 11 is rotatably engaged with the outer peripheral portion of the slide bearing 31, and is rotatable about the shaft 17 of the distroller 9b. In addition, 12 is a separation belt, 20 is a separation belt hook, and 26 shafts are used for the lower transfer guide 11.
By rotating the lower transfer guide), it is possible to avoid interference with the registration rollers during removal, and it is also effective in downsizing the device Ft. Moreover, in the example,
The positioning of the lower guide 11 is performed by using a contact portion integrated with the drum 3,
That is, this is done by bringing the tips 11a of the lower guide 11 into contact with both ends 16a of the casing 16 of the unit U, so that the distance between the lower guide 11 and the drum 3 can be precisely positioned. .

Furthermore, by simply rotating the cam 19, the lower guide 11
and the separation belt 12 can be interlocked to position 14 in a predetermined position or to release it from this predetermined position.

Further, in this embodiment, the operation of the cam 19 is interlocked with the locking or unlocking of the process unit (U) at a predetermined loading position of the apparatus main body. That is, the setting or unsetting of the lower transfer guide 11 to the operating position and the locking or unlocking of the process unit U to the predetermined loading position of the apparatus main body are simultaneously performed in conjunction with each other.

This will be explained below using FIG. 4.

First, the loading operation of the process unit U into the main body will be explained.

In the figure, process unit) U is the main body front cover 28
is rotated around the hinge 28a and opened, and attachment/detachment is performed in the direction of arrow A in the figure. Further, 24 is an operating lever that is fixed integrally with the 4th 23, and this shaft 23 has a cam 1.
9 is permanently installed. Sara ni 29 is process unit)U
It is an oshite. Also, 25 is the process unit) U housing 1
6, and is provided so as to fit into the cut and raised portions 26 provided at both ends of the lower transfer guide 110.

Therefore, when the process unit I-U is first mounted on the main body of the apparatus, the cam 19 is rotated together with the shaft 23 by turning the operation lever 24 clockwise 1liII times and tilting it down. As a result, the temporary spring 18, which had been pushed up by the cam 19, is lowered. Therefore, the lower transfer guide 11 rotates downward due to its own weight along with the plate spring 18, and the 9 raised portion 26 disengages from the groove 25 and the lock to the main body of the unit hU is released. At the same time, the separation belt 12 is also lowered and evacuated from the operating position, and the process unit U is moved from the main body side to the release position. Then, the process unit) U is moved to the predetermined loading position of the main body by sliding portion 11.l.

After pushing in the upper part and installing it, turn the operating lever 2=1 clockwise to raise it, so that the cam 19 releases the leaf spring 1.
8 to move the lower transfer guide 11 to the transfer paper guide position (
That is, the separation belt 12 is set in the operating position), and the separation belt 12 also contacts the drum 3. At this time, the cut-and-raised portion 26 provided on the lower transfer guide 11 also lifts up together with the lower transfer guide 11, and fits into the groove 25 of the process unit 1-U to prevent the process unit 1-U from coming off from the main body. lock. Na”
, , the cut and raised portion 26 is located away from the paper path,
The cut-and-raised portion 26# may be placed on the front side or only on either side. Furthermore, the cut and raised portions 26 may be protrusions such as dowels.

When removing the unit U from the Ushida main body, rotate the operating lever 24 clockwise to unlock the unit U and move the lower transfer guide 11 downward. , U evacuation is performed, unit) U
can be easily removed from the main body.

As explained above, according to this embodiment, the transport guide can be released and the process unit fixed to the main body can be released at the same time, so the process unit can be attached and removed without accidentally releasing the transport section. It is possible to provide an image forming apparatus that is easy to operate without the danger of erroneous operations such as erroneous operation. Furthermore, the separation means was also made into a photosensitive drum, and the method was implemented, and the current ('99 model) was installed in the process unit.
When a cleaner is installed, these units are )・+'
(Since there is no need to remove the transport 1) 1S) gonads, the process unit can be removed from the AT in one operation.
J'f! It becomes U. On the other hand, if you set the conveyance unit, you can create a q unit that makes replacing the process unit extremely simple with a simple mechanism, allowing you to perform one operation. It is possible to provide an image forming apparatus with excellent performance. - Muff 32, attach the upper transfer guide to the process unit, and attach the lower transfer guide to the process unit II! By using the IJ port for determining the positioning portions 11 and 11, it is possible to easily position the conveyance guides 7 with respect to the photosensitive drums.

Furthermore, in this embodiment, as shown in FIG. 5, the main body of the device is divided into an upper main body C1 and a lower main body C2 to facilitate maintenance. (It costs 1 yen.In addition,
33 is a push-up spring that pushes up the main body C1 when opened.

The process unit) U is attached to the upper main body CI, and the separators 1'9.8, such as the lower transfer guide 11 and the separation belt 12,
is provided on the lower main body C2. Note that the upper and lower paper feed rollers 8a and 8b and the upper and lower registration rollers 9a and 9b i
, l:, both are divided into an upper main body C1 and a lower main body C2. When handling a jam, the main body is opened vertically with the transfer paper conveyance path as a boundary, thereby facilitating the jam handling. Although the drum 3 and the lower transfer guide 11 are separated into the upper body C1 and the lower body C2 in this way, it is possible to position the lower transfer guide 11 in relation to the process unit U as in this embodiment. This makes it possible to easily achieve higher accuracy than when the lower transfer guide/f door 11 is positioned and fixed within the lower main body C2. In addition, since the upper transfer guide 1° is integrated with the process unit (U), accuracy can be improved, and there is no need to release it when attaching or detaching the process unit.
Processing can be performed easily. Moreover, the main body C1-C
By opening 2, the unit) U rotates in the -L direction, so that the groove 25 provided in the housing 16 and the lower guide 11
The fitting with the cut-and-raised portion 26 is released, and the unit) U can be removed by sliding on the sliding part island β. That is, the upper body C1 and the lower body C2 can be removed. When opened, the lock to the main body of the unit U is released.

Now, other embodiments are shown in Fig. 6, Fig. 81, and Fig. 8.

FIG. 6 shows a sectional view of the main body C of the copying machine.

7 is a sectional view of the main body of the copying machine shown in FIG. 6 when opened 17, and FIG. 8 is a perspective view of the unit viewed from below. In the figure, reference numeral 1 denotes a document mounting table made of a transparent material such as glass, which reciprocates on a rail R in the direction of arrow a. 2 is a short-focus small-diameter imaging element array, and the original fA image 0 formed on the original f1 mounting table 1 is irradiated by an illumination WJ lamp.
The anti-body 1 light image is slit-exposed onto the photosensitive drum 3 by the array 2. Furthermore, the Sidram 3 that you feel is the axis 3.
Rotate around b in the direction of the arrow. Reference numeral 4 denotes a charger, for example, a photosensitive plate coated with a zinc oxide photosensitive layer 3a or an organic semiconductor photosensitive layer 3a.

The ram 3 is uniformly charged. This 'FW 1L e%
I can get into A. This electrostatic latent image is then transferred to the magnetic roller 5.
The phenomenon consisting of toner a and toner reservoir 5b is visualized from t5V. On the other hand, in the cassette S, the area (h') P in the cassette S is between the feeding roller 35 and the area 5'e +-'.
Upper and lower registers that rotate in synchronization with the image on Ram 3) o -736a and 36b,
It is fed onto the drum 3. Then, the Topoo image on the photosensitive drum 3 is transferred onto the sheet P by the transfer discharger 37. Thereafter, the sheet P separated from the drum 3 by a separating means S (for example, a separation pellet L-B having both ends fixed to the lower IB main body C1 side as shown in the figure or a C116 corona discharger, etc.) is separated from the drum 3 by a guide 38 and a pinch. roller 38
After the toner image on the sheet P is guided by the fixing device 14 by the sheet P and fixed thereon, the sheet P is discharged onto the tray 41 by the discharge roller 15 . Note that after the toner image is transferred, residual toner on the drum 3 is removed by a cleaner 7. This cleaner 7 consists of a blade 7a and a toner reservoir 7b. 50a is a separation roller, and 50b is a driven roller. Furthermore, Ji'' is 0 or 4, which is a heat ray absorption filter.
Reference numeral 5 denotes a slit opening for guiding the original image to the surface of the drum 3.

In addition, in this practical example, the photosensitive drum 3, the IY electric device 4, the developing device 5, the cleaner 7, and the filter 51 arranged around the photosensitive drum 3 are integrated into a frame 52 as a light-shielding wall.
The frame 52a of the process kit 52 is attached to the frame 52a of the process kit 52 so that it can be inserted into and removed from the main body C in the direction of the rotational axis of the drum 3, i.e., it can be detached from the main body C in the direction of the rotational axis of the drum 3.
The eight moving parts e, l, are engaged and guided. Note that this frame body 52a has 1. Although it is made of dark brown rigid plastic, it is not limited to this and may be made of gold or wood.

Now, as shown in FIG. 7, this copying machine C is divided into an upper main body CI and a lower main body C2, which are connected by a support 1ift 53 such that the upper main body CI and the lower main body C2 can be separated.
3, it is configured to rotate upward. This upper body C1 includes an array 2 and a lamp L1 as an illumination optical system.
Further, process means such as a photosensitive drum 3, a photoconductor 5, and a cleaner 7 are arranged. In addition, the lower main body C2 includes a feeding roller 35, a transfer number 1 container 37, a separating means S, and a guide 3.
8, a fixing device 14, and the like are arranged on the sheet conveyance path. Then, by rotating the upper main body 01 upward, the sheet conveyance path is opened.

In this embodiment, the lower main body C2 is provided with a first guide 54a and a lower guide 541 for guiding the sheet P sent out in synchronization with the image on the drum 3 by the registration rollers 36a and 36b toward the drum 3. ing. As in the previous embodiment, this guide 54b is rotatably attached to the shaft 36 of the lower registration roller 361.The lower guide 54b is moved upward from the back side by a leaf spring 55. When the upper main body C1 and the lower main body C2 are in a closed state, that is, in a copyable state, both corners 56a and 56a at the tip of the lower guide 54b are biased.
56b is the lower side plate (contact part) 5 on the back side and front side of the housing 52a to the grill 52
It is positioned by hitting 7a and 57b (FIG. 8). In addition, in FIG. 8, 66 is a connector, which is provided on the side plate 57c on the back side. Also, leaf spring 5
5 is attached to a base 67.

Here, if the distance from the axis of the drum shaft 3b to the side plate lower portions 57a and 57b, that is, the contact portion where the lower guide 54b butts, is R, then the radius of the R drum 3 is r, and the gap between the lower guide 54b and the drum 3 is g. , the distance 11 may be appropriately selected so that the gap g becomes optimal.

In this embodiment, as shown in FIG. 9, the upper guide 54 a
A lower guide 54bK is fixed at both ends of the lower guide 54bK. Therefore, the lower guide 54b is connected to the contact portion 57a which is integrated with the drum 3.
571), the upper guide 54a is also positioned accurately by accurately positioning the gap with the drum 3.

Next, a case will be described in which the main body C is opened to perform maintenance such as removal of the drum or jam removal.

Rotate upwards around the center. Then, the contact parts 57a and 57b provided on the kit 52c are separated from both corners 56a and 56b of the tip of the lower guide 54b, and the lower guide 54b1
It rotates upward within the elastic range of the leaf spring 55 and remains at a fixed position (FIG. 7). As a result, the main body C is opened across the conveyance path of the sheet P, making maintenance etc. easier.

In addition, when closing the main body C, when the upper main body C1 is pushed down, the contact portions 57a and 57b of the upper main body C1 come into contact with both corners 56a and 561 of the lower guide, resisting the elastic force of the leaf spring 550. Press down, -F section main body C, 1 and lower main body c
2 are locked in a predetermined position by the locking means 65, the gap between the peripheral surface of the drum 30 and the tip of the lower guide 54b can be maintained at a good 41'1 degree.

Note that 60 is a cover that shields and protects the exposed surface of the drum 3 from light, and is provided integrally with and below the process unit 52. The cover 60 is made of the same black rigid plastic material as the frame 52, such as ABS resin, and has a rigid surface shape to block light from hitting the surface of the photosensitive drum 3 and at the same time prevent damage such as scratches.

In addition, in the first embodiment, the process unit is fixed using a fixing member integrated with the lower transfer guide, but the process unit may also be fixed using an operation lever for releasing the transfer guide. It is possible. Further, in the first embodiment described, the separation belt is also released, but the present invention is not limited to this, and the second embodiment may be used, for example.

Further, in this embodiment, an example was shown in which an organic semiconductor photosensitive layer or a zinc oxide photosensitive layer was provided with the image carrier 17, but the present invention is not limited to this, and a fib photosensitive layer can also be used. is clear. Furthermore, in the present invention,
It is clear that the present invention is not limited to those using a photosensitive layer as an image carrier, and can also be applied to those using, for example, an insulating layer. Further, the shape is not limited to a drum shape, and may be, for example, an endless belt suspended on pulleys.

- Still, the present invention is not limited to magnetic brush development; for example, one-phenomenal systems such as cascade development, fur brush development, or powder cloud development can be applied.

The cleaning method is not limited to blade cleaning, and fur brush cleaning, roller cleaning, web cleaning, etc. can be applied.

Furthermore, the imaging element is not limited to a short focal length, small diameter imaging element array, and may be, for example, a normal lens or a bar lens.

Furthermore, the process for image formation is not limited in any way, and may be, for example, the Carlson method, NP method (USP,
3,666.363) or d:P■・P method, etc. can also be applied.

Although this embodiment shows an example in which the process unit includes a developing device, a cleaner, a charger, etc. as process means in addition to the photosensitive drum, the present invention may be limited to this. do not have.

For example, as schematically shown in Figures 10-1, the unit 52 includes a photosensitive drum 3, a filter 2, a charger 4, a developer 5, and a cleaner as process means. It may be integrated into one (Figure 10 (A))
.

Furthermore, separation means) 3 may be integrated (10th
(B)), and the developing device 5 and photosensitive drum 3 (1st θ
(5)), the cleaner 7 and the photosensitive drum 3 (Fig. 10)), the charger 4, the developing device 5, and the photosensitive drum 3 (Fig.
5))), or the charger 4, cleaner 7, and photosensitive drum 3 (FIG. 10 (1")) may be integrated. Note that the image carrier is limited to the photosensitive drum 3 as described above. 521.
1: It is sufficient if a part or all of the image J1 body door processing means is integrally provided.

Here, in this embodiment, the array 2. ? These include a tF electric device 4, a developing device 5, a transfer number 'tlt device 37, a separating means S% or a cleaner 7''. Although an example is shown in FIG. 10 (5) to (1'') in which the cover 60 is illustrated, the cover 60 may be provided as appropriate depending on the nature of the photosensitive layer, and is not essential. Further, even if the process means held in the unit are detachable from the unit, f11 does not occur.

As described above, the present invention improves the operability of an image forming apparatus having an image carrier and a process means that acts on the image carrier.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views of a copying machine to which an embodiment of the present invention is applied.% 21! Figure 3 is a plan view of the lower transfer guide, Figure 4 is a full front view showing the loaded state of the unit, Figure 5 is a sectional view showing the main body of the copying machine shown in Figure 1 in an open state. FIG. 6 is a cross-sectional view of an FXt photocopier to which another embodiment of the present invention is applied, FIG. 7 is a cross-sectional view showing the main body in an open state, FIG. 8 is a perspective view of the unit viewed from below, Figure 9 t is a perspective view of the transfer guide, Figure 10 (A)
~(Ii') is a schematic diagram of the unit. In the figure, 10...Transfer-hi guide 11...Transfer lower guide 1
2... Separation belt 16... 20... Separation belt hook on 1 of process unit 17... Shaft 18...
Leaf spring 19...Cam 24...Operation lever
26. Cut-and-raised portion Yuko 52, process kit 54a...-1 = guide 54 b. Lower guide 55...Spring applicant Canon Co., Ltd.

Claims (1)

[Scope of Claims] 11) An image carrier, a process unit that acts on the image carrier, a process unit that integrally includes the image carrier and the process unit and is removably attached to an apparatus main body, and the image carrier. a guide means for guiding the conveyance sheet in the direction of the body; An image forming apparatus comprising: support means for supporting the guide means so as to position the guide means in relation to the process unit. (2) It has a structure that can be divided into a first support body and a second support body, and the first support body includes an image carrier, a process means that acts on the image carrier, and the image carrier. The second support body is provided with a guide means for guiding the conveyance sheet toward the image carrier, and a support means for swingably supporting the guide means, and the second support body is provided with a first support member. An image forming apparatus characterized in that when the body and the second support are closed, the guide means provided on the second support is positioned by a contact portion provided on the first support. (3) Divide into a first support and a second support! An image carrier, a process means that acts on the image carrier, a process unit that integrally includes the image carrier and the process means and is removably attachable to the main body of the apparatus δ; A locking means for positioning the process unit on the main body so that the lock on the main body of the process unit is released when the support and the second support are released; !Forming device i'
ij. (4) an image carrier, a process means that acts on the image carrier, a process unit that integrally includes the image carrier and the process means and is removably attached to the apparatus main body, and a conveying sheet toward the image carrier. and an operating means for locking the apparatus main body of the process unit in the loading position and setting the guide means in the operating position. Image forming device. (5) Claims (1), (2), (3), and (4) in which the process means includes a developing device.
The image forming apparatus described in . (6) The image forming apparatus according to any one of claims (1), (2), (3), and (4), wherein the process means includes a short-focus, small-diameter imaging element array. (Force the process means has a belt 11! r) Claims (1), (2), (3), (
The image forming apparatus according to item 4). (8) Claims f1), (2), (3), and (4) in which the process means includes a cleaner.
). (9) Claims (1), (2), (3), and (4) in which the process means includes separation means.
) Item 00 The image forming apparatus according to Claims (1), (2), (3), and (4), wherein the process means includes a transfer discharger. 0υ Claims (1) and (1) wherein the process unit includes an image carrier, a developer, a cleaner, and a charger.
The image forming apparatus according to item 3) and item (4). Image formation according to claims (1), (3), and (4), in which the process unit 0→i'+fJ includes an image carrier, a developer, a cleaner, a charger, and an array. Device. (13) The image according to claim 7, wherein the process unit includes an image carrier, a developing device, a separating means, a cleaner, and a charger. Forming device. [4] Claims (1), (3), and (2) wherein the process unit includes an image carrier and a developing device.
The image forming apparatus according to item 4). 09 Claims (1), (3), and (2) in which the process unit includes an image carrier and a cleaner
- The image forming apparatus described in item 1). iIG 1ifJ The painter forming device according to claim m, (3), and (4), wherein the process unit includes an image carrier, a developing device, and a (j7?fl: device).07) The image forming apparatus according to Claims (1), (3), and (4), wherein the process unit includes an image carrier, a cleaner, and an electric appliance. The image forming apparatus u001 according to claim (1), in which the support means includes a spring; and the image forming apparatus u001 according to claim (2), in which the contact portion is a frame of a process unit. Image forming apparatus according to claim (3), in which the cocking means has a cut-and-raised part. (2υ Claim in which the operating means has a lever) An image forming apparatus according to Claim No. (4). @An image forming apparatus according to Claim No. +4), wherein the middle stage of the J/■ work includes a cam.