JPS62259943A - Alignment device - Google Patents

Abstract

PURPOSE:To prevent a top of paper from being folded as well as to stack it accurately, by finding the moving direction and travel of a guide member truing up both front and rear ends of the paper with a control circuit, while energizing its driving source via a connecting member, and moving the guide member. CONSTITUTION:With indication of a control circuit 16, a front guide alone is driven via a connecting selector device 14 and it is moved till a position sensor 15 is turned on. Next, a rear guide 11 is driven (13) up to a travel limit point B via the connecting device 14. Then, according to size of paper 20 to be fed, the front guide 10 is moved to an A point, and a distance between points A and B is adjusted to size of the paper 20. A feed roller 21 is controlled (16), rotating it toward an arrow 31, and the paper 20 is delivered. If a rear end C of the paper 20 fails to get out of the feed roller 21, the paper 20 is naturally dropped down between the front guide 10 and the rear guide 11. The succeeding paper is stacked up likewise. With this constitution, a tip of the paper prevented from being folded, and plural sheets of paper are accurately stacked.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electrophotographic apparatus using a so-called Carlnon process, and more specifically relates to an electrophotographic apparatus in which a sheet of paper for transferring an image on a document surface is supplied. The present invention relates to a positioning device for paper that can align the paper before it is ejected.

2. Description of the Related Art Conventionally, the control device for conveying the paper to be transferred and maintaining the position and relativity of the original is used, for example, in our National Panacopy Copying Machine FP-4.
620J, pages 14-16. A conventional example will be described below with reference to drawing tE3.

FIG. 2 is a diagram showing an example of a schematic configuration of main parts of a control device for conveying paper in an electrophotographic apparatus using the Carlson process.

In FIG. 2, the paper 20 is fed by the paper feed roller 21 rotating i1i from the direction of the arrow 30 in the rotational direction of the arrow 31. Timing roller 22 rotates in the direction of arrow 32, and paper 2o is fed to stop roller 23 of timing roller 22. On the way, paper passing sensor 2
5, the passage of the paper 20 is detected, and after a certain period of time has elapsed, the rotation of the paper feed row 221 is stopped, and the paper 20 waits in a state in which it hits the stop row 223.

When a certain period of time has elapsed thereafter, the solenoid drive mechanism 26 operates and the stop lever 27 moves in the direction of the arrow 33. The stop roller 23 is unlocked and the paper 20 is sent out from the timing roller 22.

The feeding time of the paper 20 is determined by converting it into a regular feeding speed box according to its size, and is controlled by the control unit 28.

Note that a paper feed row 221 and a timing roller 22 are connected to the control unit 28 to control their rotation.

Further, a paper passage sensor 2E5 is connected to detect passage of paper 20. A solenoid drive mechanism 26 is also connected to the control unit 28 and controls whether or not the stop roller 23 is unlocked. The wL drive timing roller 24 is installed for the purpose of rotating as the timing roller 22 rotates and preventing the paper 2o from shifting upward. Note that the driven timing roller 24 is connected to the timing roller 22 by a timing roller gear 29.

Problems to be Solved by the Invention However, in the apparatus configured as described above, since the paper 20 waits in a state in which it is in contact with the stop roller 23, the leading edge of the paper 20 may be bent or bent.

Moreover, since there is no mechanism for holding the paper 20 in the standby state, there is a problem in that the position of the paper 20 becomes unstable.

Means for Solving the Problems In order to solve the above problems, the alignment device of the present invention includes a drive source for moving the paper, a front guide member for aligning the front edge of the paper in the traveling direction, and a rear guide member for aligning the front edge of the paper in the direction of travel. It is equipped with a rear guide member for aligning the ends, a connecting member for connecting the front and rear guide members to a drive source and transmitting the amount of movement and direction of movement in accordance with instructions from the control means, and a front guide member for aligning the ends. This paper is provided with a front guide position detecting means for moving the front guide member according to the size of the paper at the front end of the range in which the member can move.

According to the above-described structure, the present invention holds the paper in a state where it is placed between the front guide member and the rear guide member, and moves the paper by the rear guide member after the supply of the paper is finished, so that the position of the paper is adjusted. There is no misalignment, and since the leading edge of the paper is not forced against the paper, the leading edge of the paper is not bent.

Embodiment FIG. 1 is a diagram showing an embodiment of the schematic configuration of the main parts of the alignment device of the present invention. In FIG. 1, 2o is a sheet of paper on which an image is to be recorded, 3° is an arrow indicating the traveling direction of the sheet of paper 20, and 21 is a paper feed roller that feeds the sheets of paper 20 one by one according to instructions from the control circuit 16; 10 is a traveling direction 30 of the paper 2o that is successively fed by the paper feed roller 21
a front guide for aligning the front edge with respect to the paper 20;
Rear guide with rear end 11, front guide 1o and rear guide 11
operates by receiving the driving force of the driving source 13 controlled by the control circuit 16 via the connecting member 12 .

Does 14 operate only the front guide 1o or the rear guide 1?
This is a connection switching means that can switch whether to operate together with 1 or 1 according to an instruction from the control circuit 16. Reference numeral 15 denotes front guide position detection means for detecting that the front guide 1o is at the front end of the movable range 17.

The operation of the positioning device configured as described above will be described below.

First, the positions of the front guide 1o and the rear guide 11 are uncertain.

In response to instructions from the control circuit 16, the connection switching means 14, which is comprised of an electromagnetic clutch or a plunger solenoid, is switched to a mode for moving only the front guide 1o. A drive source 13 constituted by a stepping motor or the like is rotated by a control circuit 16 to move forward in the traveling direction 3o of the front guide jof paper 2o, and continues to move until the front guide position detection means 15 is turned on. When the front guide detection means 16 detects the presence of the front guide 1o, a signal 40 is input to the control circuit 16, and the control circuit 16 detects the drive source 13.
, and the front guide 10 is stopped at the front end of its movement range 17. Next, the connection switching means 14fil is switched to a mode in which the front guide 10 and the rear guide 11 are moved by an instruction from the control circuit 16. The rear guide 11 is moved rearward by the drive source 13 from the control circuit 16 to reach the mechanical limit point B.
Stop at a point. Next, the front guide 1o'ft is adjusted according to the size of the paper 2o fed by the paper feed roller 21.
, and move it to point A within the movable range 17. For this purpose, the connection switching means 14 is set to a mode in which only the front guide 10 is moved, and the driving force of the driving source 13 is utilized. Needless to say, the distance between the entry point and point B is set by the control circuit 16 in accordance with the dimensions of the paper 2o.

With the above steps, preparations for receiving the paper 20 have been completed. Next, the paper feed roller 21 is rotated in the direction of the arrow 31 according to instructions from the control circuit 16 to feed out the paper 2o. When the end point C of the paper 20 has completely passed the paper feed roller 21, the paper 20 naturally falls between the front guide 10 and the rear guide 11. Furthermore, the next sheets 2o are stacked one after another between the front guide 1o and the rear guide 110 in the same way as the above operation, and after the paper feed row 221 is stopped by the instruction from the zero control circuit 16, the sheets 2o are stacked one after another between the front guide 1o and the rear guide 110. Rear guide 11
Set the mode to move together. If both guides are moved forward, it becomes possible to move the bundle of sheets 20 in an orderly manner.

Note that the driving force of the driving source 13 is applied to the front guide 10 and the rear guide 11.
The connecting means 12 for transmitting the signal to the user is constructed of something like a toothed belt.

Effects of the Invention As described above, the present invention includes a driving source for moving sheets, a front guide member for aligning the front edges of the sheets in the traveling direction, a rear guide member for aligning the rear edges of the sheets,
A connecting member is provided to connect the front and rear guide members to a drive source and transmit the amount and direction of movement thereof in response to instructions from the control means, and a connecting member is provided to connect the front and rear guide members to a drive source and to transmit the amount of movement and direction of movement thereof based on instructions from the control means. By providing a front guide position detection means to move the front guide member according to the size, the leading edge of the paper will not bend or bend, and even if there are multiple papers, their relative positions can be adjusted. The effect is that it can be held without shifting and can be moved.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of the main part of an embodiment of the present invention, and FIG. 2 is a schematic diagram of the main part of a conventional control device for conveying paper. 10... Front guide member, 11... Rear guide member, 13... Drive source, 14...
Connection switching means, 16...Front guide position detection means, 16...Control circuit, 20...Paper. Name of agent: Patent attorney Toshio Nakao and one other person θ
Roll 44-6 1

Claims (3)

[Claims] (1) a drive source for moving a plurality of sheets for recording image information; a front guide member for aligning the front ends of the sheets in the traveling direction; and a rear guide member for aligning the rear ends of the sheets; a connecting member for connecting the front guide member and the rear guide member to the driving source and transmitting the direction and amount of movement thereof; and a connecting member for controlling the connecting member by the driving source, and for connecting the front guide member and the rear guide A positioning device comprising: a control means for moving the member according to the size of the paper. (2) Paper is fed one by one from the paper supply means between the front guide member and the rear guide member according to instructions from the control means, and after the paper supply is finished, the paper is moved by the rear guide member. 2. The positioning apparatus according to claim 1, wherein said control means controls the number of sheets of paper to be supplied. (3) The control means detects the output signal of the front guide position detection means provided at the front end of the movable range of the front guide member, and controls the position of the front guide member according to the size of the paper. An alignment device according to claim 1.