JPH07137850A - Extension paper feed unit - Google Patents

Abstract

PURPOSE:To easily fit a paper feed unit as an option to a recorder main unit even by a user. CONSTITUTION:A hook 13b locked to be hooked to a bottom part engaging hole of a recorder main unit and an engaging lever 16 locked to be hooked to an engaged member of the recorder main unit are provided, and attachment to a bottom part of the recorder main unit can be performed by these hook 13b and engaging lever 16. Cassette guides 12, cassette storage space S for storing a paper feed cassette mounted to be guided by these cassette guides 12 and a paper feed means for feeding paper sheet by sheet to the recorder main unit by separating the paper in the paper feed cassette stored in this cassette storage space S are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a printer, a copying machine,
The present invention can be applied to a recording device such as a facsimile machine or a printing machine, which transfers, prints, copies, prints, and records on paper. More specifically, the present invention relates to an additional paper feeding unit that is optionally attached to the main body of the recording apparatus and adds a paper storage location for paper feeding.

[0002]

2. Description of the Related Art Conventionally, in a recording apparatus, the capacity of paper is increased, and a plurality of kinds of paper can be selectively used. Some main bodies have a plurality of paper storage locations.

However, some users do not need a plurality of paper storage locations. For such a person, a recording apparatus having a plurality of paper storage locations is expensive and not preferable.

Therefore, in some conventional recording devices,
In some cases, the paper feed unit can be added as an option only to those who want it, and the cost of the main body of the device can be reduced.

[0005]

However, in all of the conventional ones, it is troublesome to attach a paper feeding unit as an option, and the paper feeding unit is assembled and shipped, or after the shipment, it is fairly assembled unless a service person asks. There was a problem that I could not attach.

Therefore, an object of the present invention is to allow a user to easily assemble an optional paper feeding unit.

[0007]

Therefore, for example, as shown in the following illustrated embodiment, the additional sheet feeding unit 10 of the recording apparatus according to the present invention is hooked to the bottom engaging holes 27a, 27a of the recording apparatus main body 25. 13b and 13b
And engaging levers 16 and 16 which are hooked to engaged members such as engaged pins 28 and 28 of the recording apparatus body 25, and the hooks 13b and 13b and the engaging levers 16 and 16 are used to connect the engaging levers 16 and 16, respectively. A cassette storage space S for storing the cassette guides 12 and 12, and the paper feed cassette 30 installed by being guided by the cassette guides 12 and 12, which can be assembled to the bottom of the recording device main body 25, and the cassette storage space. It is characterized by comprising a sheet feeding means for separating the sheets in the sheet feeding cassette 30 stored in S and feeding them one by one to the recording apparatus main body 25.

[0008]

When attached to the recording apparatus main body 25, the hooks 13b and 13b are fitted in the bottom engaging holes 27a and 27a.
Is engaged with the recording device main body 25, and the engaging levers 16 and 16 are engaged with the engaged member.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an additional paper feeding unit which is an embodiment of the present invention. The additional paper feeding unit denoted by reference numeral 10 in the figure has a rectangular bottom plate 11. On both longitudinal edges of the bottom plate 11, a cassette housing space S is formed between them, and cassette guides 12 and 12 are attached thereto. Each cassette guide 12 has an elongated box shape without a top, and an outwardly tapered surface 12b is provided in front of the facing surface 12a.

Then, such both cassette guides 12
・ A slender plate 13 is stretched over 12. The elongated plate 13 has both ends 13a and 13a bent in a crank shape, and has two hooks 13b and 13b on an intermediate edge. Then, the hooks 13b and 13b are laid over the cassette guides 12 and 12 with the hooks 13b and 13b facing inward, and the both ends 13a and 13a are respectively inserted into the cassette guides 12 and 12 and screwed thereto.

Each cassette guide 12 has a support shaft 14 on the facing surface 12a near the position where the elongated plate 13 is bridged.
Is horizontally provided, and the small shaft 15 is rotatably attached to the support shaft 14 so as not to come off.

Further, an engaging lever 16 is rotatably mounted in the front side of each cassette guide 12. As can be seen from FIG. 2, the engagement lever 16 has the cassette guide 12
Has an engaging recess 16a at the tip protruding from
A bent portion 16 is provided at the base end located in the cassette guide 12.
b. Then, the bracket 17 is rotatably supported about the support shaft 18 and is urged by an urging member (not shown) to give a habit of clockwise rotation in FIG. , In the engaged position. The bracket 17 is positioned on the bottom portion 12c of the cassette guide 12 with a guide pin 19 and attached with a set screw 20. A release window 12d is formed in the bottom portion 12c at a position facing the above-described bent portion 16b.

Although not shown in FIG. 1, the additional sheet feeding unit 10 according to the present invention is provided with sheet feeding means. The paper feeding means includes a paper feeding roller for feeding the paper, a gear attached to the roller shaft of the paper feeding roller, and a separating member for separating the fed paper one by one.

On the other hand, the additional sheet feeding unit 1 according to the present invention
As shown in FIG. 3, a control board storage case 27 is attached to the bottom of the recording device main body 25 to which 0 can be attached by being supported by a side plate 26. Then, in the control board storage case 27, the hook 1 of the above-described additional paper feeding unit 10 is provided.
Bottom engaging holes 27a, 27a for hooking 3b, 13b are provided. Further, the side plate 26 of the recording apparatus main body 25 is provided with an engaged pin 28 with which the engaging lever 16 of the above-described additional sheet feeding unit 10 is locked.

When the additional sheet feeding unit 10 according to the present invention is attached to the recording apparatus main body 25, the recording apparatus main body 25 is raised and the bottom portion is turned sideways as shown in FIG. After that, the hooks 13 are put in the bottom engaging holes 27a, 27a.
Put the tip of b13b and hang it. Then, the additional sheet feeding unit 10 is superposed on the recording apparatus main body 25, the engagement levers 16 and 16 are brought into contact with the engaged pins 28 and 28, and the engagement levers 16 and 16 are resisted against the biasing member. Rotate and release it a little, and engage the engaged pin 28.
When 28 has entered, it returns to engage with both engaged levers 16 and 16 on these engaged pins 28 and 28.

Then, the additional sheet feeding unit 10 is securely positioned and attached to the recording apparatus main body 25, and the gear on the unit 10 side meshes with the gear on the main body 25 side. Then, the driving force on the main body 25 side can be transmitted to the unit 10 side through the meshing, and the sheet feeding roller on the unit 10 side can be rotated via the roller shaft.

Then, the recording apparatus main body 25 is tilted down, and as shown in FIG. Then, the paper feed cassette 29 is attached to the cassette attachment opening 25 a of the recording apparatus main body 25. In addition, the additional paper feeding unit 10 according to the present invention,
Attach another paper feed cassette 30.

As shown in FIG. 6, the paper feed cassette 30 attached to the additional paper feed unit 10 according to the present invention has a cassette body 31 formed in a flat and slightly elongated box shape, and a bulge 31a is formed along the front edge. The sheet guide surface 31b is provided on the bulging portion 31a, and the bulging portion 31a is provided.
Is formed into a shape that also serves as a handle. Further, a bottom plate 32 is rotatably provided on the inner front side of the cassette body 31 about a support shaft 33, and a coil spring (not shown) is arranged below the bottom plate 32 so that the bottom plate 32 is always directed upward. It is configured to be biased to. In addition, positioning recesses 31c and 31c are formed on both edges of the bottom of the cassette body 31 on the inner side.

Thus, when such a sheet feeding cassette 30 is attached to the additional sheet feeding unit 10 according to the present invention, first, the sheet is put in the sheet feeding cassette 30 and the bottom plate 32 is pushed down against the coil spring. The bottom plate 32 is hooked on the cassette body 31 to prevent the sheet from floating.
Then, the paper feed cassette 30 is attached from the direction shown by the arrow in FIG. 5, guided by the taper surfaces 12b and 12b shown in FIG. 1 and guided between the cassette guides 12 and 12, and the opposed surfaces 12a and 12a.
Guide with and insert it in the back. Then, the leading end of the paper feed cassette 30 eventually collides with the small rollers 15/15, but if they are further inserted, they will pass over them and the small rollers 15/15 will soon be positioned by the positioning recess 31 of the cassette body 31.
Enter c ・ 31c. As a result, the paper feed cassette 30
Can be inserted into the cassette storage space S and positioned reliably. At this time, the bottom plate 32 hits a member in the unit 10 and its latching is released, and the bottom plate 32 is pushed upward by being biased by the coil spring so that the paper in the paper feed cassette 30 is fed by the paper feed rollers in the unit 10. Will be pushed to.

Therefore, the recording apparatus main body 25 is now driven,
When the driving force on the apparatus main body 25 side is transmitted to the sheet feeding roller on the unit 10 side to rotate the sheet, the sheets in the sheet feeding cassette 30 are sequentially sent out from the top and separated one by one by the separating member. The sheet is guided by the paper guide surface 31b of the sheet 31 into the recording device body 25, recorded therein and discharged from the discharge port 35 shown in FIG. Is stuck in.

The additional sheet feeding unit 1 according to the present invention
When removing 0, the recording device main body 25 is raised, and fingers are inserted through the release windows 12d and 12d of the cassette guide 12 and 12 to rotate the engaging levers 16 and 16 against the biasing member to be engaged. Unlock the pins 28 and 28. Then, the additional paper feeding unit 10 is lifted and the hooks 13b and 13b are pulled out from the bottom engaging holes 27a and 27a.

[0022]

Therefore, according to the present invention, the hook may be hooked on the bottom engaging hole of the recording apparatus main body, and then the engaging lever may be hooked on the engaged member of the recording apparatus main body. The additional paper feeding unit can be easily attached to and removed from the recording apparatus main body by the user.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of an extension paper feeding unit that is an embodiment of the present invention.

FIG. 2 is a partially enlarged perspective view showing the vicinity of an engagement lever portion of the additional sheet feeding unit with a part of the cassette guide cut away.

FIG. 3 is an explanatory cross-sectional view showing a schematic configuration of a bottom portion of a recording apparatus main body and an assembly of the additional paper feeding unit thereto.

FIG. 4 is an explanatory perspective view showing how the additional paper feeding unit is assembled to the recording apparatus main body.

FIG. 5 is a schematic perspective view of a recording apparatus main body to which the additional paper feeding unit is attached.

FIG. 6 is a perspective view of a paper feed cassette attached to the additional paper feed unit.

[Explanation of symbols]

 10 Additional Paper Feeding Unit 12 Cassette Guide 13b Hook 16 Engagement Lever 25 Recording Device Main Body 27a Bottom Engagement Hole 28 Engaged Pin (Engaged Member) 30 Paper Feeding Cassette S Cassette Storage Space

Claims (1)

[Claims] 1. A recording apparatus main body, comprising: a hook that is hooked to a bottom engaging hole of a recording apparatus main body; and an engagement lever that is hooked to an engaged member of the recording apparatus main body. It can be installed at the bottom of the cassette guide, the cassette storage space that stores the paper feed cassette that is installed by guiding with the cassette guide, and the paper in the paper feed cassette that is stored in the cassette storage space. An additional sheet feeding unit for a recording apparatus, comprising a sheet feeding unit that separates and feeds the sheets one by one to the recording apparatus main body.