JPS62205932A - Paper feed cassette - Google Patents

Abstract

PURPOSE:To use a paper feed cassette for large-sized paper also for small-sized paper by detachably mounting an exclusive use recording paper feed unit for every recording paper of different sizes on the bottom plate of a paper feed cassette. CONSTITUTION:A paper width regulating plate 34 and a separating claw 35 are fixed to a bottom plate 31 which is detachably mounted on the inner surface of the bottom portion of a frame 11 by two installing elements 32, 33, separately from paper width regulating plates 13 fixed to right and left insides of the frame 11 for a cassette for large-sized paper, and further a support hole 34a mounted on the paper width regulating plate 34 and a receive plate 36 engaged and supported by the support hole 31a mounted on the bottom plate 31 and urged by a spring 37 with projecting shafts 36a, 36b as a supporting point are provided to form an exclusive use paper feed unit. This unit is fixed to the cassette for large-sized paper to be simply united in a body by the installing elements 32, 33 to be used both for desired large and small sized paper.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Applications] The present invention provides a method for stacking recording paper in various image recording devices such as 1-letter printers, facsimile machines, computer output printers, word processors, and light printing machines. This paper relates to an improvement of a removable paper feed cassette that is stored in a shape and loaded into the paper feed table of the device main body to feed paper, and in particular, a universal paper feed cassette that can store ¥1 paper of different sizes. This relates to improvements to cassettes.

[Prior Art] In a commonly used image recording apparatus, when feeding recording paper to the paper feeding device of the main body of the recording apparatus, in order to simplify setting, replenishment, and replacement, it is necessary to feed recording paper of the same size. A method is used in which a large number of sheets of paper are stored in a paper feed cassette that can be stored therein, and the paper is loaded into a cassette receiving section of the main body of the apparatus to feed the paper.

This paper feeding power section is extremely convenient because once it is loaded, recording paper can be continuously and automatically fed in conjunction with the operation of the recording device. Since it supplies supplies, it is efficient and widely used.

[Problems that Hatsutill is trying to solve]However, these paper feed cassettes are prepared according to the size of the recording paper, and its size (generally considered to be the most flexible) 34 size, A4 'i'
JJ and for so-called large-size recording paper with a size of at least 35, and are not available for smaller-sized recording paper such as 36-size and A6-size recording paper. When forming one image using small-sized recording paper, it is necessary to manually feed one sheet of paper, which is a tedious and inefficient operation.

In addition, even if the universal type paper feed cassette is capable of storing recording paper of different sizes, when storing the above-mentioned small-sized recording paper, the paper feeding members such as the separating claw, paper width regulating plate, trailing end stopper, etc. must be adjusted to their respective predetermined positions. The device had to be set in the same position, and the complexity was unavoidable.

The present invention has been made in order to solve the above-mentioned problems. The purpose of the present invention is to provide a paper feed system that can automatically feed 100 sheets of recording paper continuously and also that can change the size of the recording paper instantly.

[Means for solving the problem] A paper feed cassette of the present invention that achieves the above object is capable of storing recording paper of different sizes, and includes a paper width regulating plate that regulates the width of the stored recording paper. In a single paper feed cassette having a recording paper handling claw and a recording paper lifting lever for paper feeding fftff, a dedicated recording paper feeding unit for each size of the tumor can be detachably attached. This is a characteristic feature.

[Example] An embodiment of the invention is shown in Week 11 through FIG.

Prior to the description of the embodiment, the function of the paper feeding power cent for large size paper, for example, 34 size, will be explained with reference to the sectional view shown in FIG.

When the paper feed center 10 containing recording paper P stacked in layers is attached to the paper loading section of the recording device 20 and set in a cassette, the lifting lever 2 provided on the recording device 20 (I
1 operates counterclockwise using the shaft 21a as a fulcrum, pushes up the recording paper receiving plate 12 through the window 11a at the bottom of the frame 11 of the paper feed cassette 10, and rotates counterclockwise using its end 12a as a fulcrum. to incline.

As a result, the uppermost surface of the recording paper P placed on the recording paper receiving plate 12 comes into pressure contact with the feeding roller 22 of the recording device 2o with an appropriate pressing force, and the uppermost recording paper P is fed out. We are now preparing for the

On the other hand, on the left and right inner surfaces of the frame 11, a pair of width regulating plates 13 are provided symmetrically to equalize the width of the stored recording paper P, and each paper l@outside of the regulating plate 13 is provided. A pair of separating claws 14 are attached to the paper width regulating plate 13 in a symmetrical manner that can freely rotate about a shaft 13a on the paper width regulating plate 13 as a fulcrum.

The separating claw 14 includes a flat portion 14a that presses down the left and right corners of the stacked recording sheets P by its own weight, and a rising portion 14t) on which the front end of the recording sheets P comes into contact, and separates the stacked recording sheets P. Its height is movable according to the amount of recording paper P, and together with a rear end stopper 15 that restricts the rear end, it functions to restrict the stored recording paper P to its unloading position.

Further, when the feeding roller 22 starts to rotate counterclockwise due to the start of conveyance of the recording paper P, the flat portion 14a of the separating claw 14 is moved by the friction force that causes the uppermost recording paper
An operation to separate only one sheet of recording paper P from the recording paper P below it...
It also has a so-called judgment effect.

Misfire 111J utilizes the function of 10 (large-sized paper feed force sensor) as is, and also replaces and accommodates small-sized recording paper to supply it to the recording device 20. This paper proposes a paper feed cassette that can be used for both dog and small sizes, and an example thereof is shown in FIGS. FIG. 1 is a perspective view of a paper feed cassette according to the present invention, and FIGS. 2 and 3 are a partial plan view and a partial sectional view thereof. Figure 4 shows the paper feed unit that can be attached to and detached from the paper feed cassette.
¥l ff1 diagram. In these drawings, the same parts as in FIG. 5 are designated by the same reference numerals.

The paper feeding power cent of the present invention is designed to be used for recording paper of dog size, for example, 84 size, within the left and right sides of the frame 11! In addition to the paper width regulating plate 13 and the separating claws 14 that are fixedly attached to the frame body 11, there is also a bottom plate 31 that can be attached and detached to the inner surface of the bottom part of the frame 11 by means of detachable attachment pieces (nairanochi) 32 and 33, and the bottom plate. 3
1, a paper width regulating plate 34 and a separating claw 35,
A protruding shaft 36 is fitted and supported in a support hole 34a provided in the paper width regulating plate 34 and a support hole 31a provided in the bottom plate 31.
A dedicated paper feeding unit 3o is provided, which includes a recording paper receiving plate 36 which is biased counterclockwise by a spring 37 using a and 36b as fulcrums.

The recording paper receiving plate 36 has protruding shafts 36a, 3 on both ends thereof.
6b, and the trailing edge of the recording paper is 'l':i.
A rear end stopper 36b for regulating the position of the rear end stopper 36b is integrally bent. Furthermore, a friction member 38 is attached to the leading end of the recording paper receiving plate 36.

When copying onto small size recording paper using the paper feed cassette 10 and the ifF paper unit 30 configured as described above, the paper receiving plate 36 on which the large size recording paper of the paper feed cassette 10 is placed is moved from the frame. 11, and instead, a paper feed unit 30 for small-sized recording paper is installed at a predetermined position within the frame 11, and is fixed together with one-touch fittings 32, 33 such as Naira nochi.

When the dedicated paper feeding unit 30 is installed, a predetermined stack of recording paper is placed on the recording paper receiving plate 36, and the separating claws 14,
35. Paper bank system 13, 34. The trailing end stopper 36b is used to move the paper λ on the left and right sides of the front sheet of the recording paper stack. Further, the stack of recording sheets is spring-biased upward by the spring 37 at the bottom of the receiving plate 36 and lifted up, but the vicinity of a part of the top corner is abutted by the separating claw 14.35 and is restricted to the front position for unloading. That will happen.

Note that when the 1 paper feed drawer 10 is used for large size recording paper, the recording paper lifting lever 21 provided in 20% of the recording apparatus operates;
When in use, the recording paper lifting lever 21 is inverted so that it does not come into contact with the bottom plate 31 of the dedicated paper feeding unit 30 and does not act.

If the dedicated paper feeding unit 30 that accommodates the above-mentioned small-sized recording paper is prepared in various sizes such as 36 size, one A6 size postcard, and special sizes, one large paper feeding cassette can handle various sizes of recording paper. It is now possible to store and print continuously @paper.

In the above explanation, one of the paper 1 paper regulating temporary 13 and the handling claw 14 is assumed to be a fixed base surface provided on the frame 1, and the other paper 1, 1
The paper feed unit 7 according to the present invention has paper width regulation on both sides, although the paper feed unit 7 according to the present invention has paper width regulation on both sides. It is also applicable to central reference recording systems with plates and cutting claws.

[Effect of release] According to the present invention, small-sized recording paper can be inserted into the recording device! :
As one means of feeding paper, it is now possible to use paper feeding power cents for dog-sized paper, which has traditionally been commonly used.As a result, paper feeding of various sizes, such as small A paper feeding power sector for both large and small sizes is now provided, which makes it easy and practical to handle a large number of recording sheets and form images.

4.: A simple explanation of IJ Fig. 1 (・1) A perspective view of the paper feeding force sector of the present invention. Figs. The figure is a perspective view of a paper feeding unit that can be freely attached to and detached from the paper feeding cassette.The fifth example is a cross-sectional view of the paper feeding cassette when using large-sized recording paper.

1o...Paper cassette 11...frame body 12.36...1 stipend provisional 13.34...Paper width regulation plate 14.35... Judgment claw 20...11 equipment 21... Recording paper lift lever 30...Special ffT paper feed unit 31...Bottom plate 32.33... Mounter 36t)...Rear end stopper 37...splash

Claims (1)

[Claims] A feeder capable of storing recording paper of different sizes, having a paper width regulating plate for regulating the width of the stored recording paper, and a claw for handling the recording paper, and using a recording paper lifting lever on the paper feeding side. A paper cassette characterized in that dedicated recording paper feeding units of different sizes are detachably attached.