JPS62290645A - Sheet conveying device for copying machine and the like - Google Patents

Abstract

PURPOSE:To simplify structure, save a space, and prevent double feeding by making a manual paper feeding guide shiftable to a manual position and a cassette position, and shiftingly operating a paper feeding driven roller to a manual paper feeding driving roller and to a cassette paper feeding driving member by means of this shifting operation. CONSTITUTION:At the time of manual paper feeding, a guide 6 is rotated downward to a manual feeding position. Thereby, an arm 7 swings in the direction of the arrow A centering around a fulcrum 6a and a driven roller 8 is brought into contact with a driving roller 11, to feed a sheet 4 which is inserted onto the guide 6. At the time of cassette paper feeding, the guide 6 is rotated upward. Thereby, the arm 7 swings in the direction opposite to the arrow A and the driven roller 8 is connected to a driving member 12, to feed a sheet in a cassette 5. By this structure, the number of parts can be reduced while saving a space, miniaturizing a device, and preventing double feeding.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a copying machine, etc., which is equipped with a paper feeding function from a cassette containing sheets 1 to 1 and a paper feeding function by manual feeding. The present invention relates to a sheet conveying device.

(Prior Art) Conventional sheet conveying devices such as copying machines A and the like are equipped with a sheet feeding roller that feeds sheets from a cassette containing sheets, and a sheet feeding roller that feeds sheets by manual feeding, as shown in, for example, Japanese Utility Model Application Publication No. 59-127044. This method requires a pair of paper feed rollers for bypass paper feeding, and requires a large number of relatively expensive paper feed + 1-roller parts, which increases costs and makes it difficult to save space. there were.

In addition, if there is an error in operation, for example, if paper is inserted into the guide for manual paper feed while cassette paper feed is selected, paper feeding from the cassette and bypass paper feeding by manual feed may be performed at the same time. However, it has been desired to improve this problem. (Objective of the Invention) The present invention addresses the above-mentioned conventional technical problems, and reduces the number of parts by using a paper feed roller that feeds paper from a cassette and bypasses paper by hand. It is an object of the present invention to provide a sheet conveyance device for a copying machine or the like that is capable of cost reduction and space saving, and does not cause the inconvenience of duplicate paper feeding.

(Structure of the Invention) The present invention provides a sheet conveying device such as a copying machine that is equipped with a function of feeding paper from a cassette containing sheets and a function of feeding paper by manual feeding, in which a guide for manual feeding is rotatable. The yJ is connected to a drive source and can be selectively switched between manual paper feeding and cassette paper feeding.
A! The IJJ member and the drive roller facing the manual paper feed path cooperate, and a driven roller is supported on an arm that swings in conjunction with the switching rotation of the guide. When manual sheet feeding is performed, the driving member contacts the first roller, and when cassette sheet feeding is performed, it is connected to the driving member and abuts sheets in the cassette.

With this configuration, either paper feeding from the cassette or bypass paper feeding by manual feeding is selected depending on the state of the guide for manual paper feeding, and the driven roller is used for feeding paper from the cassette or by bypass paper feeding by manual feeding. It can be shared as a 1-Ra, reducing the number of parts.

(Example) An example of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 shows a bypass paper feeding state by manual feeding, and FIG. 2 shows a paper feeding state from a cassette. A cassette receiver 283 and an opening 3 for manual paper feeding are provided on the side plate 1 of the body of the copying machine, and the above force 1'! A cassette 5 containing sheets 4 is set in the sheet tray 2. Further, a guide 6 for manual paper feeding is provided in the opening 3 for manual paper feeding so as to be rotatable about a fulcrum 6a, and manual paper feeding can be performed in the state shown in FIG. , I! upwards as shown in Figure 2. Manual feeding is no longer possible when the paper is wet, and due to the condition of the guide 6,
It is configured so that either paper feed or cassette paper feeding can be selectively switched.

Further, an arm 7 is provided that swings in conjunction with the switching rotation of the guide 6, and the guide 6 and the arm 7 are connected by a spring or a gear, so that the arm 7 swings within a predetermined range. It looks like this.

This arm 7 supports a driven roller 8 having functions as described below. On the other hand, a drive motor 9 as a drive source that operates the conveyance device is attached to the side plate 1, and a driven chain 10 is connected to the drive shaft 9a of the drive motor 9 facing a manual paper feed bypass path 14 (described later). [It is connected to a gear provided at the shaft end of the cola 11 and a drive member 12 (using a gear or the like) that serves as a drive source for feeding the cassette paper. When the guide 6 is set to the manual paper feeding state shown in FIG. 1, the arm 7 moves in the direction of the arrow shown in FIG. The driven [1-ra8 is the above-mentioned drive [1-
When the guide 6 comes into contact with the roller 11 and the guide 6 is in the cassette feeding state as shown in FIG. 2, the arm 7 swings as shown by the arrow B in FIG. A gear is connected to the drive member 12 and is configured to come into contact with the upper surface of the sheet 4 housed in the cassette 5.

Paper feed guide plates 13a and 13b are provided inside the body of the copying machine.

13C, these guide plates 138 and 13G form a manual paper feed bypass path 14, and guide plates 13a,
13b forms a paper feed path 15 which serves as a path for feeding paper from the cassette 5 and from the manual paper feed bypass path 14, and a pair of transport rollers 16 and 17 are provided in front of the path.

Further, with the guide 6 in the state shown in FIG. 1, a manual paper feed guide plate 18 is provided on the extension line of the guide 6 at the time of Iζ and facing the manual paper feed bypass path 14. Near the 1ζ flow end of the paper feed guide root 18, [
A sheet detection switch 19 is provided directly 114 of the drive roller 11 to detect a manually fed sheet. Further, a guide detection switch 20 is provided above the side plate 1 to detect when the guide 6 is rotated upward, and the output of this switch 20 causes the operation section of the copying machine to select a cassette. We are trying to show that it is possible.

As shown in FIG. 2, when the guide 6 is rotated upward, a magnet 21 is provided which holds the guide 6 in a fixed position and attracts the guide 6 made of a magnetic material. As shown, a guide abutting portion 22 is provided to maintain the state when the paper is rotated downward to a state where manual paper feeding is possible. As is well known, the cassette 5 is provided with a sheet destruction plate 23 on which the sheet 4 is placed and a spring 24 that pushes the sheet placement plate 23 upward.

Next, the operation of the above configuration will be explained.

First, to perform manual bypass paper feeding, as shown in FIG. As a result, the driven mill roller 8 comes into contact with the drive roller 11. In this state, move the sheet 4 onto the guide 6 using the arrow C.
When the sheet is inserted as shown in FIG. When the sheet 4 is further inserted into the roller 8t3, the sheet 4 is pinched between the drive roller 11 and the driven roller 8, and passes through the manual paper feed bypass path 14 and the paper feed path 15. It will be transported by At this time, the driven row 58 is connected to the sheet 4 in the cassette 5.
Since the paper is not in contact with the paper cassette 5, paper is not fed from the cassette 5.

Next, to feed paper from the cassette 5, the guide 6 is rotated in one direction as shown in FIG. Drive roller 8
is connected to the drive member 12 and in contact with the upper surface of the sheet 4 in the cassette 5. In this state, by pressing a copy button (not shown) provided on the operation section of the copying machine body, the drive motor 9 is driven.
The drive member 12 is thereby driven via the chain 10,
Therefore, the driven roller 8 is driven, and the sheet 4 accommodated in the cassette 5 is conveyed to the paper feed path 15 side. Note that in this state, the driven roller 8
Since it is not in pressure contact with the drive row 511, manual bypass feeding is not possible.

In this way, when the driven roller 8 is in contact with the drive roller 11 in conjunction with the swinging of the arm 7, it acts as a pair of rollers for paper feeding by manual bypass, and
When the arm 7 swings in the direction F and the covered portion 111c + - roller 8 comes into contact with the sheet 4 in the cassette 5, the driven roller 8 acts as a roller for feeding the cassette paper. As a result, the driven roller 8 becomes a part that can be used for manual paper feeding and paper feeding from a cassette, and the number of parts can be reduced.

(Effects of the Invention) As described above, according to the present invention, by supporting the driven [cola] on the arm that swings in conjunction with the switching rotation of the rotatably provided guide for manual paper feeding, When the guide is set to manual paper feed, the driven roller functions as a roller for manual bypass paper feed, and when the guide is set to cassette paper feed, the driven roller functions as a roller for feeding paper from the cassette. The number of parts can be reduced by sharing parts, and it is possible to reduce costs, save space, and downsize, and also selectively switch between manual paper feeding and paper feeding from a cassette. This prevents erroneous duplicate paper feeding.

[Brief explanation of drawings]

FIG. 1 is a top view of the sheet conveying apparatus for copying, etc. of the present invention in a manual paper feeding state, and FIG. 2 is a sectional view of the same apparatus in a cassette feeding state. 5...Cassette 1~. 6...Guide for manual paper feeding,
l... Arm, 8... Driven roller, 9... Drive/E-tater, 11... Drive roller, 12... Drive member. Patent applicant Santfl Industrial Co., Ltd. Representative
Person Patent Attorney Etsushi Kotani [11 Patent Attorney Cho II
l

Claims (1)

[Claims] 1. In a sheet conveyance device such as a copying machine that is equipped with a function of feeding paper from a cassette containing sheets and a function of feeding paper manually, the state in which the guide for manual paper feeding is rotatable to perform manual paper feeding. The drive member is connected to a drive source and the drive roller faces the manual paper feed path. a driven roller is supported on an arm that contacts the driving roller when the guide is in a state of manually feeding paper;
A sheet conveying device for a copying machine or the like, characterized in that the sheet conveying device for a copying machine or the like is connected to the driving member and comes into contact with sheets in the cassette when the cassette is feeding paper.