JPH041741A - Original turning over mechanism of electrophotographic copying machine - Google Patents

Abstract

PURPOSE:To allow the automatic turning over of pages of books, etc., by providing driving means for moving an original turning over means which can maintain the uppermost surface of the originals on an original platen back and forth and switching means which advances and retreats the above-mentioned means relative to the originals and the original platen. CONSTITUTION:The driving means 26 to 30 which move the original turning over means 25 which can maintain the uppermost surface of the originals B on the original platen 4 back and forth and the switching means 37 which advances and retreats the above-mentioned means relative to the originals B and the original platen 13 are provided. The book B is opened to a V shape of a prescribed dull angle and is held in this state; therefore, even if the number of pages is large, the central binding part is less curved and the misregistration from the other pages at both ends is small. The original turning over is automat ically and continuously executed in this way while the originals are held set. There is no possibility that the originals are damaged or broken; in addition, the time required for copying is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a document turning mechanism for copying documents in an electronic copying machine.

[Conventional technology]

Generally, in an electronic copying machine, an image reading section and an image writing section are disposed below a document table made of transparent glass on which a document is placed.

That is, an image scanner that includes a bar-shaped light source that illuminates the original and an image sensor that receives light information reflected from the original is installed below the original plate, and this image scanner scans the lower surface of the original plate. , the side of the document placed face down that is to be copied is exposed to light. The obtained optical information is first converted into an electrical signal and subjected to image processing, and then projected onto a rotating photoreceptor drum as optical information and copied.

By the way, when copying thick books, etc. with such an electronic copying machine, open the page you want to copy, turn it upside down, press that side against the document table, cover the document cover, and then make copies. Ta.

However, in such electronic copying machines, books, etc. are pressed against a flat manuscript table, so the binding part at the center of the book is easily damaged, and if the books, etc. are thick,
Because the central binding part does not come into close contact with the document table, there are problems in that part cannot be copied clearly or the image is distorted and difficult to see.

Also, since the edges of each page of an open book will be uneven,
There was also the problem that black lines at the edges of each page appeared on the copied paper, making the copied paper dirty and difficult to read.

As an electronic copying machine that improves this problem, there is one described in Japanese Patent Application Laid-open No. 64-66679, for example.
This copying machine had a document table arranged in an inverted V shape, on which the document was placed facing downward.

[Problem to be solved by the invention]

However, in any case, when trying to copy a large number of consecutive pages, when one page is copied, the other page must be moved to the copying position, and after copying two pages of a spread, the book must be turned over and manually copied. I had to flip through the pages, which was extremely tedious. Further, there is a problem in that books are damaged or damaged by repeating such operations.

In view of the above problems, an object of the present invention is to provide a document turning mechanism for an electronic copying machine that can automatically turn over a document such as a book placed at a copying position and does not cause damage to the document. shall be.

[Means to solve the problem]

The document turning mechanism of the electronic copying machine according to the present invention includes a document table on which a book document is placed facing upward, a transparent document table located above the document table and movable in the vertical direction, and a document table. An electronic copying machine equipped with a scanning means for exposing and scanning the upper surface of a document, a document turning means capable of holding the uppermost surface of a document on a document placing table, a driving means for reciprocating the document turning means, and a document turning means. The apparatus is characterized by comprising a switching means for moving the document forward and backward relative to the document and the document table.

[For production]

Place an original, such as a book, on the original placing table with the original side to be copied facing up, and turn on the operation switch.The original placing table lowers and presses the original with an appropriate pressure, and in this state, the scanning means reads the original. The document is copied by exposing and scanning the top surface of the document table along the document table. Next, after the document table is raised to a predetermined position again, the document turning means is moved by the drive means, and the document turning means is moved by the switching means. By advancing the document turning means from outside the raising/lowering area of the document table into the raising/lowering area, the document turning means is positioned above the document and held at the uppermost document surface, and then moved in the opposite direction by the driving means to turn the document. will be carried out.

〔Example〕

A preferred embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

In Fig. 1, 1 is the main body of the electronic copying machine, and 2 is this main body l.
This is a sub-copying section that is electrically connected to the copying section for copying books and the like.

In the subcopying section 2, 3 is a fixedly arranged base;
Reference numeral 5 indicates a document mounting table which is arranged to be slidable in the vertical direction on the upper surface of the base 3 and forms a mounting surface 4a having a substantially V-shaped cross section with an obtuse angle at the center; Mounting table 4
These springs are arranged in a compressed state between the back surface of the document plate 4 and support the document mounting table 4. For example, when an open book B is placed facing upward on the mounting surface 4a, The height of the page to be copied is adjusted by sliding the document table 4 in the vertical direction according to the weight.

Reference numeral 6 denotes a movable part that can move up and down guided by a column 7 supported by the base 3; 8 a standing wall that stands up from the base 3 and is supported on the back side of the movable part 6 (see FIG. 2); 9 is a wire hung in a figure 8 shape on four pulleys 9a pivotally connected to the upright wall 8; 10.10 is a pair of parallel elongated holes in the upright wall 8 that stand up from the back side of the movable part 6; 8a,
a support piece 1 that passes through 8a and is fixed to the wire 9;
A drive motor 1 is connected to one of the pulleys 9a and can move the movable part 6 up and down via the pulley 9a and the wire 9.

Reference numeral 13 denotes a transparent glass original plate attached to the movable part 6 and has a V-shaped cross section and a combined shape of planes in two directions corresponding to the placing surface 4a of the original placing table 4 (see FIG. 3); 14 is a document plate; A scanning means that travels on a table 13 and exposes and scans a document such as a book located on the lower surface of the document table 13.
, 15 is an image scanner that extends perpendicularly to the traveling direction and has a built-in light source (not shown) and an image sensor that receives reflected light from the document; A pair of drive wires are stretched in a V-shaped loop in the scanning direction, and each end of the image scanner 15 is fixed to the driving wires, and the drive wires are arranged so as to sandwich the document table 13. 18 and 19 are respectively supported by the movable part 6 on the outside of the drive wires 16 and 17, and each boo')-16a,
17a and supports the common support shaft of the image scanner 1.
5 is a guide plate with guide grooves 18a and 19a into which each end slides, and 20 is a pulley 16a provided at the end.
, 17a is connected to the common support shaft 21 of the image scanner 15 via a belt 21a, and is used to scan the image scanner 15 via the drive wire 16.degree. A home position sensor 23 is located on the valley line, which is the lowest part of the document table 13, and is a changeover switch that detects the end position of scanning one page of the image scanner 15. A switch 23' is located on the right end of the document table 13. This is a changeover switch similar to the changeover switch 23 that
．． By scanning up to 23' by the image scanners 15, each page of the book B placed on the document table 4 can be copied. When detected, the image scanner 15 is returned to the starting position.

Note that when the set number of sheets (page number) is reached, the changeover switch 23 performs the same process. Also, image scanner 15
is detected only by the selector switch 23'.
It may also be possible to make copies for one page.

Reference numeral 25 designates a page turning unit disposed in the movable unit 6. In particular, in the page turning unit shown in FIG. 26 and a pair of pins 27a
, 27a are guided by guide grooves 26a, 26a and can slide in the longitudinal direction, that is, in the running direction of the image scanner 15. 28 is hung between a pair of pulleys 29a, 29b to which the guide frame 27 is fixed. The wire 30 is a roller feed motor to which a pinion meshing with one pulley 29a and an integral gear is connected, and these constitute a driving means.

Reference numeral 31 denotes an arm whose upper end is pivotally connected to the support shaft 27b on the lower surface of the guide frame 27, and whose lower end holds a page turning roller, which will be described later, via a lower bent portion 31a. It is rotated and held by an elastic member that does not touch the original platen 13 and the book B, as shown by broken lines in FIG. 32 is a page turning roller made of rubber, for example, which is rotatably supported by a roller section 33 connected to the lower end of the arm section 31; 34 is a page turning motor that rotates the roller 32 via a belt 34a; 35 is a page turning motor that rotates the roller 32 via a belt 34a; A page stopper projects diagonally downward from between the roller 32 and the motor 34, and its free end forms a hook 35a for hooking the uppermost page surface, and the roller section 33 and arm section 31 constitute document turning means.

37 is fixed to the lower surface of the guide frame 27 and the arm 3
Reference numeral 7a denotes a solenoid or switching means connected to the arm 31, and when the arm 31 is in the inclined position, by energizing the solenoid 37, the arm 37a is attracted and the arm 31 is moved to the vertical position, that is, as shown in FIG. It is designed to be rotated over the book B shown in the figure. Therefore, solenoid 37 is turned ON.
, OFF causes the roller section 33 to move forward and backward relative to the book B (in a direction perpendicular to the longitudinal direction of the guide plate 26),
Moreover, when the document table 13 is lowered to hold down the uppermost page surface b1 of the book B to be copied, the solenoid 37 is turned off.
It is in the FF state, and the document table 13 is raised to face the page.
The solenoid 37 can be turned on in a state away from the vehicle.

In the figure, a cover covering the sub-copying section 2, such as the movable section 6 and the upright wall 8, is omitted.

This embodiment is constructed as described above, and its operation will be explained next.

First, before use, the document table 13. The movable part 6 including the scanning means 14 and the page turning part 25 is in the raised position.

In this state, book B with the page to be copied facing up.
When the book B is placed on the placement surface 4a of the document placement table 4, the book B is opened and held in a V-shape with a predetermined obtuse angle. Therefore, even if there are many pages, the curved part of the central binding part is small (and the curved part at both ends is small). The deviation from other pages in the copy is also small.Also, since the document placement table 4 is supported by the springs 5, 5, if the number of pages of the book B is large (and the weight is large, the document placement table 4 is relatively small). If the document mounting table 4 is lowered, and the number of pages is small and the weight is small, the amount of descent of the document table 4 is small, and the position of the opened page surface is adjusted appropriately.

Then, when an operation switch (not shown) is turned on, the movable part 6 is lowered by the drive motor 11, and the document table 13 presses the open page surface of the book B with an appropriate pressure (first
(see figure). At this time, the image scanner 15
The page turning section 25 is at the upper starting position, and the arm section 28 of the page turning section 25 is held in an inclined position at the left end of the guide plate 26. Then, the scan motor 20 operates, and the drive wire 1
When 6.17 and 6.17 are activated at the same time, the image scanner 15 interlocks and scans along the document table 13, the built-in light source exposes the surface of the document, and the reflected light is read by the image sensor and copied.

In this manner, when the image scanner 15 is detected by the switching sensor 23 at a position where one page has been exposed and scanned, the image scanner 15 stops and copies one page. Then, the image scanner 15 further scans in the same direction, and when it is detected by another switching sensor 23' at the position where the remaining one page has been exposed and scanned,
Also, one sheet of copying is completed and the scanning operation is completed, and at the same time the scan motor 20 is reversed and the image scanner 1
5 is returned to the starting position detected by the home position sensor 22. When copying two pages at the same time, the image scanner 1 is operated only by the switching sensor 23'.
5 will be detected.

When the scanning operation is completed, the drive motor 11 is reversed and the movable part 6 is raised. Then, in the page turning section 25 shown in FIG. 4 or FIG.
1 and the roller section 33 move from the left end to the right end in the figure, and the solenoid 37 is turned on in the middle (preferably near the central binding part of the book B), so that the arm section moves around the support shaft 27b of the guide frame 27. 31 is rotated from an inclined position on the outside of the document table 13 to a vertical position in the direction of the document table 13 (direction perpendicular to the paper plane of FIG. 4). and roller feed motor 3
0 has stopped (see FIG. 5), and the lower part of the document table 13 is in the raised position from the bent part 31a of the arm part 31.
The page turning roller 32 is in a state where the edge of the book B is pressed. Or roller feed motor 3
The solenoid 37 may be turned on after the end of the 0 drive.

At this position, the page turning motor 32 rotates to the right for a predetermined period of time, so that the page turning reroller 32 rounds the top page b into an arc shape as shown in FIG. By moving the arm 31 to the left in FIG. 4, the end of the page b1 is hooked onto the hook 35a. Then, by further rotating the roller feed motor 30 in this state, the arm section 31 and the roller section 33 are horizontally moved to the left end position in FIG. At least the arm portion 31 returns to its initial position, thereby completing the page turning operation.

Note that the stop position of the roller section 33 during page turning, that is, the drive end position of the roller feed motor 30, differs depending on the size of the book, etc., but since the position of the central binding section is determined by the placement surface 4a, it can be adjusted depending on the size of the book, etc. roller part 3
The three stop positions may be determined in advance, and a switch for selecting one may be provided on the operating section.

Then, the movable part 6 is lowered again and a scanning operation is performed.

In addition, if an operating section is provided in a part of the electronic copying machine main body 1 or the sub-copying section 2, and the number of pages to be copied is specified in advance and manually operated, the machine will automatically stop once after copying a predetermined number of pages, resulting in efficient operation. It is.

As described above, according to this embodiment, the page turning mechanism is linked to the mechanism for copying book B, so that multiple pages can be continuously and automatically copied, so there is no need for a page turning operation. There is no fear that the book B or the like will be damaged or damaged during copying, and at the same time, the complexity of manual page turning operations can be omitted, and the time required for copying can also be shortened.

Although the explanation was omitted in the above embodiment, since the size of the manuscript such as a book may be different, the image scanner 15
In order to select the scanning range according to the size, sensors having the same functions as the home position sensor 22 and the switching sensor 23' are placed at appropriate positions depending on the size, and a selection switch is provided on the operation section. Bye.

Further, in the above-described embodiment, the sub-copying section 2 is constructed separately from the copying machine main body 1, but it may be constructed so as to be incorporated into the copying machine main body 1.

〔Effect of the invention〕

As described above, the document turning mechanism of the electronic copying machine according to the present invention includes a document turning means, a driving means for reciprocating the document turning means, and a switching mechanism for moving the document turning means forward and backward with respect to the document and the document table. Since the document is equipped with a means for turning the document automatically and continuously with the document set, there is no risk of damaging or damaging the document, and the complexity of manually turning the document can be avoided. This can be omitted, and the time required for copying can also be shortened.

[Brief explanation of drawings]

The attached drawings show one embodiment of the present invention, and FIG. 1 is an explanatory diagram showing the scanning state of the sub-copying section, FIG. 2 is a perspective view of the main part showing the driving part of the movable part, and FIG. FIG. 4 is an explanatory diagram showing the page turning operation, and FIG. 5 is a perspective view of the main parts of the page turning section. 4...Document stand, 13...Document stand, 14...
...Scanning means, guide plate, remoter, roller, 3 lenoid. 5...Image scanner, 26...7...
Guide frame, 30...Roller feed 1...Arm part, 32
...Page turning...Page stopper 37
... Soga 3 Figure q

Claims (1)

[Claims] A document placing table on which a document such as a book is placed facing upward, a transparent document placing table located above the document placing table and movable in the vertical direction, and a scanning means for exposing and scanning the upper surface of the document placing table. In an electronic copying machine, the electronic copying machine includes: a document turning means capable of holding the uppermost surface of the document on the document placing table; a driving means for reciprocating the document turning means; A document turning mechanism characterized by comprising a switching means for advancing and retracting the document.