JPS62269845A - Image forming device - Google Patents

Abstract

PURPOSE:To permit a jogger to be installed optionally according to a user's desire by permitting the installation structure of the jogger for accumulating the discharged paper sheets in each group in a laser printer, etc. to be mounted and demounted onto an image forming device body. CONSTITUTION:The rear part on the upper surface of a printer body is formed higher, and a recessed part 6 as paper discharge part is formed at the center part on the upper surface. A jogger 7 is installed in the recessed part 6. On the front surface part of the driving unit 51 of the jogger 7, a paper discharge tray 52 as receiving board is installed in slidable ways along the perpendicular direction to the direction of discharging paper through an inside plate 53. When the jogger 7 is to be installed into the recessed part 6, the jogger 7 is inserted into the recessed part 6, and after the driving unit 51 is positioned by inserting a positioning pin into a positioning hole, the jogger 7 is lowered, and a projection part 63 is inserted and fitted into an installation hole 65, and installation work is carried out.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention (Object of the Invention) (Industrial Application Field) The present invention is applied to, for example, a laser printer or an electronic copying unit, and collects discharged sheets by group. The present invention relates to an image forming apparatus with an improved jogger mounting structure.

(Prior art) Generally, this type of jogger uses a tray to receive paper that is ejected with an image formed on it by a laser printer or the like.
When, for example, 10 sheets of paper are stacked on this cradle, the pedestal is slid, for example, 15M in a direction perpendicular to the paper ejection direction for each stack, thereby changing the stacking position of the sheets and dividing them into groups. It looks like this.

(Problem to be solved by the invention) However, in the past, the jogger was fixedly attached to the device body, so the jogger could not be attached as needed, and the jogger could not be made optional. It became.

This made the jogger uneconomical for users who did not need it.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide an image forming apparatus in which a jogger can be made optional.

[Structure of the invention]

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides the following features for the device main body:
It is characterized by a jogger device that is detachably provided.

(Function) The jogger is provided in a detachable manner to the main body of the device, and the jogger can be attached or detached as needed, making the jogger an option.

(Example) The present invention will be described below with reference to an example shown in the drawings. 6 and 7 are an external perspective view and a schematic longitudinal side view showing the internal configuration of an image forming unit device equipped with a laser printer as an image forming device of the present invention,
The structure is as follows.

In the figure, reference numeral 1 denotes a laser printer as an image forming apparatus, and this laser printer 1 is placed on a multi-force set feeder 2, and an envelope feeder 3 is attached to the rear side thereof.

The laser printer 1 has the following configuration. That is, numeral 5 in the figure is a main body of a laser printer, and the rear part of the upper surface of this printer main body 5 is raised one step higher, and a recess 6 serving as a paper ejection section is formed in the center of the upper surface. A jogger 7 is provided in this recess 6. Further, an operation panel display section 9 and an operation panel switch section 10 are provided on the right side of this recess 6, and three I/Os are provided on the left side.
A C card insertion 11... is provided.

A photosensitive drum 15 is rotatably provided approximately at the center of the printer main body 5, and a charging device 16. Laser optical system 17. Developing device 18
．． Transfer device 19. Peeling device 20, cleaning device 2)
．． and a static eliminator 22 are arranged in this order.

Furthermore, a conveyance path 24 is formed inside the printer body 5 and extends forward through an image transfer section 23 between the photoreceptor 15 and the transfer device 19, and a paper feeding path 24 is formed inside the printer body 5 and extends forward through an image transfer section 23 between the photoreceptor 15 and the transfer device 19. Cassette 25 and multi-force feeder 3
paper feed rollers 28 from the paper feed cassettes 26 and 27 respectively.
. . . and the transport rollers 29 . It is designed to lead to.

Further, an aligning roller pair 30 is disposed on the upstream side of the image transfer section 23 of the conveyance path 24, and a fixing device 31. A paper discharge selector 32 and a pair of paper discharge rollers 33 are provided.

At the end of the conveyance path 24, a branch conveyance path 35 is formed at the end of the conveyance path 24, which passes through a pair of paper discharge rollers 34 that guide the sheets P, envelopes A, etc. sorted by the paper discharge selector 32 to the recess 6 serving as a paper discharge section. has been done.゛In Fig. 7, 40 is a lower cover, 41 is a front cover, 42 is an upper cover, 43
is the right cover.

44 is the left cover, 45 is the right cover opening/closing lever.

46 is a lever for opening and closing the upper unit, and 47, 48, . . . shown in FIG. 7 are control boards constituting a control section.

In the image forming operation, the photoreceptor 15 is driven and uniformly charged by the movement of the charging device 16, and then the laser optical system 17 exposes the photoreceptor 15 to light corresponding to the image signal. to form an electrostatic latent image. Next, this electrostatic latent image on the photoreceptor 15 is developed by a developing device 18 using a two-component developing agent consisting of toner and carrier, and is sent to the image transfer section 23 side as a developer image.

Meanwhile, in synchronization with this developer image forming operation, the paper feed cassette 2
5, 26. Sheet P1 selectively taken out from 27 or manually fed paper P1 or envelope feeder 3
Envelope A supplied from is fed through a pair of aligning rollers 30, and the developer image previously formed on photoreceptor 15 is transferred onto paper P or envelope A by the action of transfer device 19. Next, the paper P or the envelope A is peeled off from the photoreceptor 15 by the peeling device 20 and sent to the fixing device 31 through the conveyance path 24 . Here, after the developer image is fused and fixed on the paper 8IP or the envelope A, it is discharged onto the upper jogger 7 or the lower paper discharge tray 12, which has been assigned a discharge direction by the paper discharge selector 32.

After the developer image is transferred onto the paper P or envelope A, the residual toner remaining on the photoreceptor 15 is cleaned by the cleaning device 2), and when the next copying operation is ready, the jogger 7 is constructed as shown in FIGS. 1 to 5. That is, numeral 51 in the figure is a drive unit, and a paper output tray 52 serving as a cradle is mounted on the front side of the drive unit 5 through an inner plate 53.
It is attached so that it can slide freely along the direction perpendicular to the paper ejection direction.

In the drive unit 51, a drive 1 [54 is provided. This drive mechanism 54 is a drive motor 55 that rotates in forward and reverse directions.
A gear 56.5 is provided on the rotating shaft of the drive motor 55.
A spiral shaft 58 is connected via 7. A slider 59 is fitted into the spiral shaft 58, and the tips of the five sliders are inserted and locked into a locking hole 67 bored in the lower side of the inner plate 53. Further, the inner plate 53 is fixed to the paper discharge plate 52 by bolts 60, and a pair of rollers 61, 61 are attached to the lower side of the inner plate 53. These rollers 61, 61 are placed on a guide rail 62 formed at the inner bottom of the drive unit 51, and run along this guide rail 62.

When a predetermined number of sheets P, for example 10, are accumulated on the paper discharge tray 52, this is detected by a detector (not shown), and the drive motor 55 is activated.

As a result, the spiral shaft 58 is rotated via the gears 56 and 57, the mover 59 is moved in the direction of the arrow, and the paper discharge tray 52 is moved by a predetermined distance 15a+).

As a result, the stacking position of the next sheet P to be discharged is changed, and the sheets P are stacked for each group.

On the other hand, as shown in FIG. 4, protrusions 63.63 are protruded from both sides of the bottom surface of the drive unit 51, and a positioning pin 64 is protruded between the pair of protrusions 63.63. ing. Further, as shown in FIG. 5, mounting holes 65, 65 and positioning holes 66 are formed in the inner bottom of the recess 6 of the apparatus main body 1.

Therefore, when installing the jogger 7 in the recess 6, first the jogger 7 is attached to the recess 6 as shown in FIG.
the positioning pin 64 of the drive unit 51.
After the jogger 7 is inserted into the positioning hole 66 and positioned, the jogger 7 is lowered to insert and fit the projections 63 and 63 into the mounting holes 65 and 65 to complete the installation.

Moreover, when removing the jogger 7, the jogger 7 is pulled upward. As a result, the protrusion 63° 63 comes off the attachment hole 65, 65, and the jogger 7 can be removed.

As described above, since the jogger 7 is detachably provided in the recess 6 of the device main body 1, the jogger 7 can be made optional, and the jogger 7 can be attached as needed, thus meeting the user's wishes.

It goes without saying that the present invention is not limited to the above-mentioned embodiments, and can be modified in various ways within the scope of its gist.

〔Effect of the invention〕

As described above, according to the present invention, the jogger can be attached to and detached from the main body of the device, and the jogger can be made optional, thereby achieving the effect that the user's wishes can be met.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an explanatory diagram showing how to attach and detach the jogger, FIG. 2 is a partially cutaway front view of the jogger, and FIG. 3 shows the inside of the drive unit. FIG. 4 is a plan view, and FIG. 4 is a perspective view showing the protrusion of the drive unit.
FIG. 6 is a perspective view showing the mounting portion of the jogger, FIG. 6 is an external perspective view showing the image forming unit, and FIG. 7 is an internal configuration diagram thereof. 1... Device body, P... Paper, 7... Jogger,
8... Paper output tray (receptacle). Applicant's representative Patent attorney Takehiko Suzue No. 10 562) Michu 3 Figure 4 Figure 5/. Figure 6

Claims (2)

[Claims] (1) A device comprising a device main body and a jogger that is installed in the device main body and receives ejected paper with a holder, and that moves the holder to change the stacking position of the paper every time a predetermined number of sheets are accumulated. . An image forming apparatus, characterized in that the jogger is detachably attached to the apparatus main body. (2) A mounting hole is provided in one of the device main body and the jogger, and a protrusion is provided in the other, and the protrusion is removably fitted into the mounting hole.
The image forming apparatus described in .