JP2597955Y2 - Image forming device - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention relates to a facsimile, a printer, relates to an image forming equipment which is applied as a copying machine, an image forming apparatus in which a plurality of paper feed unit vertically to the paper feed wall of the particular apparatus.

[0002]

2. Description of the Related Art A manual paper feed port is opened in a paper feed wall of an apparatus main body together with an existing paper feed cassette mounting port, and a post card feeder and other optional feeders are integrated with the manual feed tray together with a manual feed tray. 2. Description of the Related Art There is an apparatus that is arranged and configured to be capable of selectively feeding a manual feed paper or a postcard.

[0003] In this type of apparatus, in order to adopt a configuration in which one of the recording sheets is inserted into a common feeding path, recording is performed from the other tray (feeder) with the recording sheet or the like remaining in one of them. In the case where paper is erroneously fed, or when recording paper is erroneously fed from one tray (feeder) while the other is being fed, a plurality of sheets are placed in a common feeding path in either case. The recording paper is fed, and a jam occurs as a matter of course.

For this reason, in the conventional apparatus, the postcard feeder or other optional feeder mounting port described above is separately provided, or the manual feed tray and the optional tray are not integrally mounted but one of the manual feed tray and the optional feeder feed port is provided. Have been proposed to be selectively attached.

[0005]

However, in the method in which the optional feeder mounting port is separately provided, a plurality of feed paths are required correspondingly, and a paper feed roller and the like are separately provided corresponding to the feed path. This leads to an increase in the number of parts, a complicated configuration of the device, and an increase in the size of the device. In the latter method, the tray (feeder) must be selectively replaced each time paper is fed, which complicates the paper feeding operation.

In view of the above-mentioned drawbacks of the prior art, the present invention provides an apparatus in which a plurality of paper feed units such as a manual paper feed tray and an optional tray are arranged vertically at one paper feed port provided in a paper feed wall of the apparatus body. It is another object of the present invention to provide an apparatus capable of feeding recording paper only from one tray (feeder) smoothly and reliably without causing a jam.

[0007]

The present invention is applied to an image forming apparatus in which a plurality of paper feed units are arranged on an upper and lower tier on a paper feed wall of an apparatus main body. Therefore, a tray or a feeder is provided on an upper tier and a lower tier. Are not necessarily limited to devices having a common paper feed port.

In the present invention , as shown in FIG. 1, there is provided a swing member 4 which swings following the placement of the recording paper on the paper feed unit 2 located on the upper stage side. The opening and closing control of the sheet feeding path of the sheet feeding unit 5 located at the lower stage side is made possible by utilizing the swing displacement of the sheet feeding unit.

[0009]

According to the present invention , when the recording paper is placed on the upper paper supply unit, the paper supply path of the lower paper supply unit is closed, and the recording paper is inserted from the upper paper supply unit. After the
The rocking member 4 returns to the original position, and the paper feed path of the lower paper feed unit 5 is opened. Therefore, according to this means, the upper sheet feeding unit 2
As long as there is a recording sheet, feeding of the lower sheet feeding section 5 is not permitted, and the recording sheet is erroneously fed from the other tray (feeder) in a state where the recording sheet or the like is left in one of them. It is possible to completely eliminate the fear and the possibility that the recording paper is erroneously fed from the other tray (feeder) while the recording paper is being fed from the other tray (feeder).

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; However, unless otherwise specified, dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. Not just.

FIG. 1 shows a configuration of a paper feed mechanism side of an image forming apparatus according to an embodiment of the present invention. First, the outline will be briefly described in FIG. A cassette storage unit 7 is provided below the paper supply wall 11, and a common paper supply port 8 is opened above the cassette storage unit 7. The common paper supply port 8 has a flat manual paper supply tray (lower paper supply unit) 5 at the lower stage. , An upper post card feeder 2 is connected.

The postcard feeder 2 has a feed surface 2a for forming a feed path in a state where a plurality of postcards are placed while the position is regulated by guide plates 20 located on both sides, and the feed surface 2a.
A swingable pressing arm 6 for pressing and holding the upper surface of a postcard placed on the feeding surface, a band-shaped opening 3 having a substantially central portion opened in a strip shape on the feeding surface 2a along the lateral direction, and the band-shaped opening The swing member 4 has a fan-like cross section fitted to the swing member 3.

The swing member 4 has a fan-shaped base end pivotally supported by a shaft 41 projecting from both end surfaces of the opening, and a spring 42 is arranged around the shaft 41. Both ends of the spring 42 are engaged with the pin 43 of the open end face and the pin 44 of the swing member 4 so that the swing member 4 is urged upward through the pin. As a result, as shown in (B), the swinging member 4 is normally protruded above the paper feed surface 2a, and forms the paper feed path of the manual paper feed tray 5 on the lower side as shown in FIG.
A state where the paper feeding surface 5a is opened to formed. When the postcard 10 is placed on the paper feeding surface of the postcard feeder 2 in this state, the swing member 4 is displaced downward by the weight of the postcard 10 against the elastic force of the spring 42 as shown in FIG. As a result, the lower end of the swinging member 4 closes the sheet feeding surface 5a . In a preferred embodiment, when the upper surface of the swinging member 4 and the sheet feeding surface 2a are flush with each other, the lower end of the swinging member 4 is recessed on the sheet feeding surface 5a of the manual sheet feeding tray 5.
b.

When the postcard is placed on the postcard feeder 2 according to the above-described configuration, the paper is fed from the manual paper feed tray 5.
After the surface 5a is closed (see (B)) and the postcard insertion from the postcard feeder 2 is completed, the rocking member 4 automatically returns to the original position by the elastic force of the spring 42. 5 paper feed plane 5a of the manual feed tray is opened ((C) see). Therefore, according to this means, the postcard feeder 2
As long as there is a postcard above, the feeding of the manual paper feed tray 5 is not allowed, and as a result, there is a risk that the recording paper or postcard will be erroneously fed from the tray 5 or the recording paper will be fed from the tray 5. The possibility that the postcard is erroneously fed from the postcard feeder 2 can be completely eliminated.

[0015]

As described above, according to the present invention, a plurality of paper feed units such as a manual paper feed tray and an optional tray are vertically arranged at one or a plurality of paper feed ports provided in a paper feed wall of the apparatus main body. Even in the disposed apparatus, the recording paper can be fed from only one tray (feeder) smoothly and reliably without causing a jam.

[Brief description of the drawings]

FIGS. 1A and 1B show a configuration of a paper feeding mechanism side of an image forming apparatus according to an embodiment of the present invention , wherein FIG. 1A is a perspective view, FIG. 1B is a cross-sectional view showing a state where a lower paper feeding unit is opened, FIG. 3C is a cross-sectional view illustrating a state where the lower sheet feeding unit is closed.

[Description of Signs] 2 Upper paper feed unit, 5 Lower paper feed unit, 4 Swinging member

Claims (1)

(57) [Scope of request for utility model registration] In an image forming apparatus in which a plurality of paper feed units are vertically arranged on a paper feed wall of an apparatus main body, the image forming apparatus oscillates by following the placement of recording paper on a paper feed unit located on an upper stage side. An image forming apparatus comprising: a swinging member, wherein a swinging displacement of the swinging member is used to control opening and closing of a sheet feeding path of a sheet feeding unit located on a lower side.