JPS62121465A - Original platen movement type image forming device - Google Patents

Abstract

PURPOSE:To prevent an image forming device from being turned over even if large force is applied to the original platen and to reduce the size and weight of an image forming device by providing support legs which can be extended to flank parts of the image forming device body on the sides in the moving direction of the original platen. CONSTITUTION:The moving original platen 2 is provided to the top surface part of a copying machine body 1 and the surface of an original on the original platen 2 is scanned by a readout element 5 in the copying machine body 1. When the copying machine is not in use, a paper feed tray 11 and a paper discharge tray 12 are folded to the sides of the copying machine body 1, which is carried with a paper feed tray grip part 11b and a discharge tray grip part 12b. When copying operation is performed, the paper feed tray 11 and paper discharge tray 12 are rotated around their hinges 9 and 10 and end parts of the grip parts 11b and 12b are fixed in contact with the installation surface of the main body 1. When a sheet P of large size is placed on the installation surface of the trays 11 and 12, their extension trays 16 and 17 are rotated around hinges 13 and 15 to increase the sheet mount area.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Applicability The present invention relates to an image forming apparatus such as a copying machine with a movable document table, and details 1 relate to its overturn prevention mechanism.

(B) Conventional Technology In recent years, information equipment and office automation equipment are becoming smaller and lighter due to improvements in integrated circuit technology, sensor technology, material performance, processing technology, and other peripheral technologies. Image forming devices such as electronic copying machines, which are part of information equipment, are becoming smaller and smaller, and those that use focusing optical transmission elements, lens systems, or line reading elements are becoming smaller, as shown in Figure 5.
Image forming apparatuses in which the document table 2 located at the upper part of the main body 1 is movable are often used. In addition, there is an original v on the manuscript table.
43 is placed with the original surface facing downward, and the original surface is scanned by the optical element or reading element 5 located at the upper part of the main body 1 of the apparatus.

II of this method! jCompared to a fixed document platen type, the image forming device does not have the space occupied by the members that move during scanning within the main body, so the main body can be made smaller and the moving parts are fixed to the document platen. ! The scanning mechanism can be simplified.

→ Problems to be Solved by the Invention However, in this image forming apparatus with a movable document table, in the latter half of the horizontal scanning process, as shown in FIG.
However, it will extend outside the main body 1 of the device. This problem did not occur if the image forming apparatus itself was heavy, but as image forming apparatuses have become smaller and lighter in recent years,
), when a force is applied to the document table 2 from above with the document table 2 extending from the image forming apparatus main body, the image forming apparatus main body 1 may fall over.

Such l-rubles do not occur when copying sheet-like originals, but when copying thick books such as dictionaries and telephone directories, or when copying books with two pages spread, etc., spelling problems may occur. The image forming apparatus sometimes falls over because the replacement part is pressed down by hand.

One way to prevent the image forming apparatus from tipping over is to make the apparatus main body 1 heavier, but this goes against the trend toward smaller and lighter apparatuses. As another method, among the legs 6 and 7 of the image forming apparatus main body 1, the position of the leg 7, which is the center of rotation in the event of a fall, is extended to the outside of the main body, so that the leg 7 is caused by the weight of the apparatus main body 1. It is conceivable to increase the turning moment to overcome the moment caused by the pressure on the document table 2, but by extending the legs 7 outside the apparatus main body 1, the space occupied by the main body becomes large. .

(B) Means for Solving the Problems The present invention aims to solve the above-mentioned problems, and provides a movable document table on the upper surface of the main body of the image forming apparatus, so that the document table can be moved. The image forming apparatus is characterized in that extendable support legs are provided on the side wall of the main body of the image forming apparatus on the side where the image forming apparatus is used.

(E) Effect By adopting the above-mentioned means, when forming an image while applying a large force from above to the movable document table, such as when copying a thick book, the support legs can be removed from the side wall of the image forming apparatus main body on the side in the direction of movement of the document table. It extends to ensure stability with respect to the installation surface of the image forming apparatus main body.

(f) Examples Hereinafter, examples embodying the present invention will be explained with reference to the drawings.

FIGS. 1(a) and 1(b) show an embodiment of a copying machine in which a scanning section and a hard copy section are integrated.

A movable document table 2 is provided on the upper surface of the copying machine main body 1, and the surface of the document on the document table z is scanned by an optical element or reading element 5 provided at an upper portion within the copying machine main body 1. When the copying machine is not in use, there are a paper feed tray 1) and a paper discharge tray 1, which are rotatably supported on both side walls of the copying machine body 1 by hinges 9 and 10 at their lower ends. 12 are provided respectively. This paper feed tray 1) and paper output tray 1
2 has sheet placement surfaces 1) a and 12a each having a length equivalent to the height of the side wall of the main body 1 of the copying machine, and a sheet placement surface at the end opposite to the hinges 9 and 10. 1) a, 1
Handles 1)b and 12b are respectively protruded on the side opposite to 2Q, and an extension tray 16 rotatably supported by a hinge 13.15 is provided on the sheet placement surface 1)a and 12a at the same end. , 17 are provided, respectively.

When the copying machine of the present invention having the above-mentioned configuration is not in use, the paper feed tray 1)[3 and the ejection &[+]ray 12 are folded toward the copying machine main body 1, and the paper feed tray handle 1) ．．
b and the paper ejection tray handle portion 12b, it is possible to connect the paper eject tray in a continuous manner. - On the other hand, when performing copying work, the paper feed tray 1) and the paper output tray 12 are connected to each hinge 9, 10.
Rotate the paper feed tray handle 1)b and output tray handle 12b to a position where they are in contact with the installation surface of the copying machine main body 1, or at a position with a slight distance from the installation surface. It is fixed by a locking mechanism (described later). In addition, when trying out large-sized sheets 1-P on paper feed tray 1) and paper ejection tray 12, the
The extension tray 16.17 provided in 12 and 13.1
5) to expand the loading area.

Next, the closing mechanism of the paper feed tray 1) and the paper discharge tray 12 will be explained. The locking mechanisms of both trays 1) and 12 have the same symmetrical structure, so the locking mechanisms shown in Figs.
Paper ejection shown in the diagram!・This will be explained using Ray 12 as an example.

A reverse-shaped lock release lever 19, which has one end 19a in contact with the lower inclined surface 1a of the copying machine main body 1 and a finger hook 19b at the other end, is attached to the paper ejection tray 12. The position is regulated by a guide 20 provided on the side surface, and it is provided so as to be slidable along the side surface. This lock release lever 19 is elastically engaged with the side surface of the paper discharge tray 12 by a spring member 21. One end portion 19a of the lever is always kept pressed against the slope portion 1a of the main body 1 of the copying machine. Therefore, the paper discharge tray 12 can be maintained in a folded state along the side surface of the copying machine main body 1.

When using a copy machine, apply force in the direction of the arrow.
Since the paper ejection tray 12 rotates around the hinge 10, one end 19a of the lock release lever is connected to the inclined part 1a of the copying machine main body 1.
, and reaches the horizontal part 1b following the inclined part 1a of the copying machine main body 1, and as shown in FIG. Get on board. In this state, even if an attempt is made to fold the paper ejection tray 12, the ejection tray 12 cannot be folded due to the engagement between the lever end 19a and the main body horizontal portion 1b. When folding paper ejection 1 and paper 12, press the lock release lever.
19 in the direction of arrow A, the lever end 19a
is moved to a position where it is removed from the horizontal portion 1b of the copying machine main body 1, and then the paper discharge tray 19 is rotated.

In the above-mentioned embodiment of the present invention, both the feeding and discharging trays 12 and 12 are made rotatable and serve as supporting legs of the copying machine main body 1. Depending on the center of gravity position and the extension of the original T^ stand 2 from the copying machine main body 1, only one of them may be rotatable.

Next, another embodiment of the present invention will be described using FIG. 4.

A support leg 22 that can be pulled out is provided at the lower part of the side surface of the image forming apparatus main body 1 on the side where the document table 2 extends from the main body 1, and when the image forming apparatus is used, the support leg 22 is slid and the image forming apparatus main body is 1. Move it to the lower part (the state shown by the broken line in the drawing). The end portions 22 of the support legs are either in contact with the installation surface of the image forming apparatus or are fixed with some spacing therebetween.

In this embodiment, there is no hard copy part; second, there is no paper feed tray and paper ejection tray, so there is a league part that only scans the original; This is suitable for image forming apparatuses with

(G) Effects of the Invention As explained above, according to the present invention, the supporting legs that can be extended are provided on the side surface of the image forming apparatus main body on the side in the direction of movement of the stacking table, so that more than half of the document table can be extended. Even if a large force is applied to the original TW stand when the image forming apparatus is moved outward from the side surface of the image forming apparatus main body, the image forming apparatus can be prevented from falling over, and the apparatus can be made smaller and lighter. Become.

In addition, by using a paper feed tray and/or a paper ejection tray as support legs that can extend from the main body, there is no need for a dedicated support leg, which can reduce weight and cost, as well as make the device easier to use. Since these 1-rays are always set, it is possible to prevent the mistake of forgetting to set the supporting feet of the apparatus main body and causing the image forming apparatus main body to fall over.

[Brief explanation of drawings]

FIG. 1 (al is a sectional view showing the state of the image forming apparatus of the present invention when not in use, FIG. 1 (bl is a sectional view of FIG. 1 (nl
FIG. 3 is a cross-sectional view of the image forming apparatus in which the paper feed tray and paper discharge tray are used as support legs. FIG. 2 is a detailed side view of the paper discharge tray portion of the present invention, and FIG. 3+, 1 is a detailed side view when the paper discharge tray is used as a support leg. FIG. 4 is a sectional view showing another embodiment of the image forming apparatus of the present invention. FIG. 5 (This is a sectional view of an image forming apparatus showing a conventional example. 2. Original partition, 5. Reading element, 1),
# Combined shot 1 +-ray, 12... paper output tray 22...
・Pull-out support legs Figure 1 (a) (b3

Claims (4)

[Claims] (1) In an image forming apparatus in which a document table is movably provided on the upper surface of the image forming apparatus main body, an extendable support leg is provided on a side wall of the image forming apparatus main body on the side in the moving direction of the movable document table. An image forming apparatus with a movable document table. (2) The document table movable image forming apparatus according to claim 1, wherein the supporting legs are comprised of a paper feed tray and/or a paper ejection tray provided on a side wall of the main body of the image forming apparatus. (3) The document table movable image forming system according to claim 2, wherein the paper feed tray and/or the paper ejection tray are rotatable around the lower end of the side wall of the main body of the image forming apparatus. Device. (4) The document table movable image forming apparatus according to claim 1, wherein the support leg is removable from a lower end of a side wall of the main body of the image forming apparatus.