JPS59147362A - Original positioning and guiding device of copying machine or the like - Google Patents

Abstract

PURPOSE:To prevent an original from being broken and displaced by providing a driving mechanism which moves a couple of guide plates in a relative approaching/leaving direction and a control means which controls the driving mechanism on the basis of the setting of a setting means and a setting means for setting original sizes. CONSTITUTION:A couple of guide plates 4a and 4b are provided near the original insertion slot 2 of an automatic original feeder 1 movably at right angles of an original feed direction, and those guide plates 4a and 4b engage side edges 6a and 6b extending in the feed direction of an original 5 to position and guide the original 5. Then, the driving mechanism 11 moves a couple of guide plates 4a and 4b in the relative approaching and leaving directions, a setting means has a setting button 10 for setting original size, and the control means controls the driving mechanism 11 for the relative movement corresponding to the original size set by the setting means.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a document positioning and guiding device for a copying machine or the like equipped with an automatic document feeder.

Conventionally, in copying machines etc. equipped with automatic document feeders,
For example, in Fig. 1 and Fig. 2, a plan view and a sectional side view T are shown.
As shown schematically, a document placement table 3 is installed near the document insertion port 2 of the automatic document feeder 1, and a pair of guide plates 4a and 4b are mounted on the document placement table 3. The pair of guide plates 4a are provided so as to be slidable in directions (directions of arrows B and B') perpendicular to the document feeding direction (direction of arrow A).
.

4b is positioned in accordance with the document size (A4, B5, etc.) and the loading direction (vertical and horizontal directions) of the document 5 (indicated by a chain line) to be fed into the automatic document feeder 1. All the originals 5 are positioned at a predetermined position on the mounting table 3, and both side edges 6 along the feeding direction of the original 5 are placed.
Information board 4.a, 6b. A and 4B are engaged with each other to guide the document 5 as it is fed into the automatic document feeder 1.

However, in such conventional document positioning and guiding devices, the guide plates 4a and 4b are generally moved by manual operation in accordance with the scale 8 carved on the placement plate 3. Not only is the operation cumbersome, but the positions of the guide plates 4a and 4b are also inaccurate. For example, if the original 5 is a thin paper, the guide plate 4a,
4b is set narrower than the predetermined dimension,
Manuscript 5 side! There is a risk that the guide plates 4a, 4bK may be pressed against the guide plates 6a, 6b and may be rolled up, or may be damaged when being fed into the automatic document feeder 1. Also, information board 4. a
, 4b is set wider than the predetermined size, the document 5 may not be set in the specified position, but may be skewed when fed into the automatic document feeder 1. There is a risk that the copying position may be skewed, or the original may be jammed.

The present invention has been made in view of the above-mentioned points, and provides a document positioning guide that allows a document to be easily and accurately set in a predetermined position, and also to be fed smoothly and accurately into an automatic document feeder. The purpose is to provide equipment.

Accordingly, the present invention provides a drive mechanism that can relatively move a pair of guide plates in a direction toward each other and a direction in which they move away from each other, a setting device for setting the document size, and a drive mechanism based on the setting by the setting device. The present invention is characterized in that it is provided with a control means for controlling.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

3 and 4 are plan views and cross-sectional side views showing essential parts of an embodiment of the document positioning and guiding device according to the present invention. In addition, in Figures 3 and 4, the first
Corresponding parts to those in the figure and FIG. 2 are given the same reference numerals.

A plurality of setting buttons 10 are provided on the operation panel 9 of the copying machine, and by operating the setting buttons 1o, the guide plate 4a
, 4b are adapted to be electrically actuated. For this purpose, a drive mechanism having a binion-rank configuration as shown in a plan view in FIG. 5 is attached to the lower surface of the document table 3. This drive mechanism J1 includes a pinion 12 and a rack 13a provided opposite to each other with this pinion 2 in between.
, 13b and the motor 14 connected to the pinion 12. The guide plates 4a, 4b are fixed to one end of each of the racks 13a, 13b, and as the motor 14 rotates clockwise and counterclockwise, the guide plates 4a, 4b move.
are arranged to move in a direction away from each other and in a direction towards each other. FIG. 6 shows another example of the drive mechanism 11, which includes a pair of Boo! An endless wire 16 is suspended between J15a and 15b, and guide plates 4a and 4b are attached to the wire 16. One pulley 15a is connected to the motor 14 via a belt 17.
According to the clockwise and counterclockwise rotations of the guide plates 4a and 4b, the guide plates 4a and 4b move toward and away from each other.

FIG. 7 is a block diagram showing an electric circuit system for controlling the rotational direction and rotation speed of the motor 14, in which 18 is a setting circuit including the setting button 10, and 19 is a control circuit for the motor 14. Since the setting circuit 18 and the control circuit 19 can be constituted by circuits that are known per se, a detailed explanation will be omitted. However, once the document size and placement direction are set using the predetermined setting button 10, the setting circuit 18 The control circuit 19 controls the direction and speed of rotation of the motor 140 according to commands from the control circuit 19, so that the guide plates 4a and 4b move to take an interval corresponding to the document size and placement direction set by the setting button 10. It is configured.

Note that the drive mechanism 11 shown in FIGS. 5 and 6
In this case, the rotation of the motor 14 causes the guide plates 4a, 4b to
Since the guide plates 4a move at a constant speed in the direction toward each other or in the direction away from each other, the guide plates 4a
, 4b are installed at equal intervals from the center position, the guide plate 4a.

4b always moves at equal intervals from the center position.

Therefore, the original 5 is always aligned at the center position 7, and when it is desired to make a copy with one side edge of the original 5 aligned with a predetermined line, one of the guide plates 4a and 4b is moved to the center position. The guide plate may be fixed to a predetermined line and only the other guide plate may be moved.

As described above, by setting the document size and feeding direction using the setting button]0, the guide plate 4. a, 4b are moved to a predetermined position, thereby positioning the original 5 at a predetermined position, and then guided by the guide plates 4a, 4b into the automatic original feeder RI, where it is copied.

When copying is completed, the drive mechanism 11 moves to the guide plate 4a.

Control is performed to return 4b' to W(C) corresponding to the maximum copyable original size of the copying machine, in preparation for the next original size setting.

The above is an explanation of the embodiment of the document positioning and guiding device according to the present invention. According to such a configuration, the setting button 1
By simply setting the document size and document placement direction using 0, the guide plates 4a and 4b immediately move accurately to a predetermined position corresponding to the document 5 to be copied and are locked at that position. The document 5 can be easily and accurately positioned, and the document 5 can be accurately fed into the automatic document feeder 1 while being guided by the guide plates 4a and 4b.

Therefore, according to the present invention, it is possible to eliminate the troublesome operation of the conventional document positioning guide device, and also to prevent accidents such as damage to the document, deviation of the document, and paper jams.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the main parts of a copying machine equipped with a conventional document positioning guide device f, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a document positioning guide according to the present invention. 4 is a sectional view taken along line IV-1'i in FIG. 3; FIG. 5 is a plan view showing an example of a drive mechanism applied to the device of the present invention; FIG. 7 is a plan view showing another example of the drive mechanism, and FIG. 7 is a block diagram showing the electric circuit system. ]・Automatic document feeder, 2-Document insertion slot, 3...Document placement table, 4a, 4b-・Guide plate, 5・Document, 6a
+ 6 b...Side edge of document, 9...Operation panel, 10
・Setting button, 1 Drive mechanism, 12・-Vinio/, 1
3a. 13b rack, 14%-ta, 1.5a,
]-5b = Pulley, 16/End l female wire, 17
・Belt,] 8 Setting circuit, 19 Control circuit 35 Fig. 1 Fig. 2 Fig. 3 Fig. 9 10 Fig. 4

Claims (1)

[Claims] The automatic document feeder has a pair of guide plates movable in a direction perpendicular to the document feed direction near the document insertion opening, and the guide plates engage with side edges of the document along the document feed direction. The document positioning and guiding device for a copying machine or the like that positions and guides the document includes a drive mechanism that can relatively move the pair of guide plates in a direction toward each other and a direction in which they move away from each other; a setting means for setting the size of the document; and a setting means for performing the relative movement in accordance with the set document size in accordance with the setting by the setting means.