JP2000292989A - Automatic manuscript feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease manual load when an automatic manuscript feeder is attached to and detached from an image forming device main body by providing an exclusive handle on it. SOLUTION: The automatic manuscript feeder is loaded to be able to be attached to and detached from the main body of the image forming device and documents are fed one by one to a manuscript reading surface of the image forming device from a document bundle. In this case, cylindrical shaped handles 4 and 7 are provided in the front part and back part of an exterior cover 1 of the automatic manuscript feeder and the handle 7 is installed able to be freely inserted to and extracted from the exterior cover 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic image forming apparatus which is detachably mounted on a main body of an image forming apparatus such as a copying machine or a facsimile and feeds a document from a document bundle one by one to a document reading surface of the image forming apparatus. The present invention relates to a document feeder.

[0002]

2. Description of the Related Art A conventional automatic document feeder of this kind (AD
In F), there is no dedicated handle, and in the case of a large and heavy automatic document feeder, the work of attaching and detaching it to and from the image forming apparatus main body is difficult.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic document feeder with a dedicated handle to reduce a human burden when the automatic document feeder is attached to and detached from an image forming apparatus main body.

[0004]

Therefore, according to the present invention, handles are provided at a front portion and a rear portion of an exterior cover of an automatic document feeder.

[0005] The rear handle is preferably mounted so as to be freely inserted into and removed from the outer cover. The handle is preferably cylindrical.

[0006]

Next, an embodiment of the present invention will be described.
This will be described with reference to the drawings.

FIG. 1 is an overall external view of an automatic document feeder according to the present invention, and FIG. 2 shows an internal mechanism. The internal mechanism includes a document feeder on the left, a document feeder in the center, and a document discharger on the right. These feeder, transporter, and discharger are covered by a common exterior cover 1. And independent drive means (paper feed motor, transport motor, reverse discharge motor)
Is provided.

A document table 2 is detachably mounted on the exterior cover 1, and an upper surface of the exterior cover 1 under the document table 2 serves as a paper discharge tray 3.

Although not shown, the operation of the internal mechanism of the automatic document feeder in the copy mode will be described. The document is placed on the document table 2 with its image surface facing upward.
Is set to When the copy start button of the copier main body (image forming apparatus main body) is pressed, the paper feed motor rotates forward (clockwise), the call roller, the paper feed roller, and the pull-out roller rotate forward, and the reverse roller rotates reversely.

The original set on the original table 2 is fed from the lowermost original by the normal rotation of the call roller, and is conveyed to a separation unit constituted by a feed roller and a reverse roller. The fed documents are separated one by one by a paper feed roller rotating forward in the document transport direction and a reverse roller rotating in the reverse direction. The document is conveyed from the paper supply unit to the conveyance unit by a pull-out roller pair.

The transport motor (not shown) rotates forward, and the original is transported by the transport belt onto the contact glass serving as the original reading surface and stopped at a predetermined position on the contact glass. That is, after the registration sensor detects the trailing edge of the document conveyed by the conveyance belt, the conveyance motor conveys the document by a predetermined number of pulses and then stops the conveyance motor, thereby stopping the document at a predetermined position on the contact glass. .

After the feed motor and the transport motor are stopped, the feed motor rotates forward again, and the next original set on the original table 2 is separated and fed. The original on the contact glass is transported forward by the transport motor after the photosensitive operation of the copying machine is completed, and is transported to the paper discharge unit by the transport belt. The paper discharge motor rotates forward simultaneously with the forward rotation of the transport motor, and the original conveyed to the paper discharge unit is discharged onto the paper discharge tray 3 by a roller pair including a driving roller and a paper discharge driven roller.

As shown in FIG. 1, a horizontally long cylindrical front handle 4 is integrally provided at the center of the front edge of the outer cover 1, and at the center of the rear surface of the outer case 1 opposite thereto. Has a horizontally long cutout window 5 as shown in FIG.

As shown in FIG. 2, a flat T-shaped rear handle 7 is provided on a common base plate 6 for a sheet feeding section, a conveying section, and a sheet discharging section.
Are rotatably pivoted by stud pins 8 as follows.

That is, as shown in FIGS. 6 and 7,
The rear handle 7 has a horizontally long cylindrical grip 7b integrally formed at the tip of the lever 7a, and a shaft hole 7c at the base end of the lever 7a.
A stud pin 8 implanted in the base plate 6 is fitted to the base plate 6, and is prevented from falling off by a washer 8a.

A stopper 9 shown in FIG. 5 is fixed on the base plate 6 near the stud pin 8. This stopper 9
Is formed with a convex portion 9a having a triangular cross section. At the rear end of the lever 7a of the rear handle 7, two concave portions 7d having a triangular cross section are formed. By fitting the two concave portions 7d and the convex portions 9a of the stopper 9, the rear handle 7 is
In FIG. 6, the rotation is restricted at two positions, that is, the position indicated by the solid line and the position indicated by the chain line rotated 90 degrees from the position.

When the rear handle 7 is in the position shown by the solid line, it is entirely accommodated in the exterior cover 1, and when it is in the position shown by the chain line, the grip 7b of the rear handle 7 is
As shown in FIG. 8, the outer cover 1 projects outside from the cutout window 5. At this time, unevenness 7e is formed on the grip portion 7b so that the hand can be easily hooked on the grip portion 7b.

The external cover 1 of the automatic document feeder has
It has such a front handle 4 and a rear handle 7, and the front and rear handles 4, 7 protrude from the front and rear surfaces of the exterior cover 1, respectively, so that they are mounted on the copying machine main body 10 as shown in FIG. 9. At this time, or when detaching from the copier main body 10, the entire automatic document feeder can be lifted by holding these handles.

After the automatic document feeder is mounted on the copying machine body 10, the rear handle 7 is stored in the outer cover 1. The front handle 4 always protrudes from the front surface of the exterior cover 1, but its protruding position is higher than the operation panel 10 a of the copier main body 10 and does not protrude beyond the operation panel 10 a, so that it does not interfere.

As shown in FIGS. 10 and 11,
By forming a concave portion 11 bulging inward at the center of the lower edge of the rear surface of the exterior cover 1 and using the concave portion as a rear handle, it is not necessary to separately mount the lever-type rear handle 7 as described above.

[0021]

According to the first aspect of the invention, when the automatic document feeder is attached to and detached from the main body of the image forming apparatus, an artificial burden can be reduced irrespective of its size and weight.

According to the second aspect of the present invention, when the automatic document feeder is mounted on the image forming apparatus main body and used,
Operability can be improved without lowering the level of its functions and design.

According to the third aspect of the present invention, it is possible to reduce the human burden when attaching and detaching the automatic document feeder to and from the image forming apparatus main body, and to ensure safety.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an exterior cover used in an automatic document feeder according to the present invention as viewed from the front side.

FIG. 2 is a perspective view of an internal mechanism of the automatic document feeder.

FIG. 3 is an external perspective view of the exterior cover as viewed from the rear side.

FIG. 4 is a side view of a rear handle and a stud pin pivotally connecting the rear handle.

FIG. 5 is a front view of a stopper that restricts rotation of a rear handle.

FIG. 6 is a plan view showing a turning operation of a rear handle.

FIG. 7 is an exploded perspective view showing a mechanism for mounting the rear handle.

FIG. 8 is a sectional view of a rear handle mounting portion.

FIG. 9 is a side view showing a state in which the automatic document feeder is mounted on a copying machine main body.

FIG. 10 is a perspective view showing another example of the rear handle.

FIG. 11 is a partial sectional view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Exterior cover 4 Front handle 5 Notch window 6 Base plate 7 Rear handle 7a Lever 7b Handle 7c Shaft hole 7d Concave part 7e Concavo-convex 8 Stud pin 9 Stopper 9a Convex part 10 Copier main body (body of image forming apparatus) 10a Operation panel

Claims (3)

[Claims] 1. An automatic document feeder, which is detachably mounted on a main body of an image forming apparatus and feeds a document one sheet at a time from a document bundle to a document reading surface of the image forming apparatus. An automatic document feeder, wherein handles are provided at a front portion and a rear portion of the outer cover. 2. The automatic document feeder according to claim 1, wherein the rear handle is detachably attached to the exterior cover. 3. The automatic document feeder according to claim 1, wherein the handle has a cylindrical shape and protrudes from the outer cover.