JPH01303243A - Automatic document feeder - Google Patents

Abstract

PURPOSE:To make it possible to copy a necessary part in documents such as a thick-book without forcibly opening it at a great angle by separating open-and-shut operations of paper feeder part which is closer to a document reference line or a paper discharge part and a carrier part from each other. CONSTITUTION:When documents such as a thick-book is to be copied manually, a carrier part 3 is opened and the document is placed on the contact-glass 1a, then the copy operation is performed. Next, when only a half of opened documents such as a thick-book is to be copied, the copy operation is performed under the following conditions; a paper feeder part 2 which is closer to the document reference line 1b or a paper discharge part 4, in addition to the carrier part 3, is opened and the edge part of the document is set to the document reference line 1b on the contact-glass 1a, and the half of the material to be copied is placed on the contact glass 1a, that is, under the carrier part 3 side, while a half of the document which is not to be copied is placed under the paper feeder part 2 which is closer to material reference line 1a or under paper discharge part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic document feeder, and more particularly to a manually operable automatic document feeder.

[Conventional technology]

Conventionally, an automatic document feeder (ADF) is roughly divided into three blocks: a paper feed section 2, a transport section 3, and a paper ejection section 4, as shown in Fig. It is placed on the main body 1 of the device.

In such an automatic document feeder (ADF), if you want to copy a thick document P such as a book, you can manually copy it onto the contact glass 1a of the main body 1, as shown in Figure 7, instead of automatically feeding it. The document P will be placed there, and the only block that needs to be opened and closed for this purpose is the transport section 3 among the three blocks.

Considering this, considering the user's need to make the opening/closing part as light as possible during manual operation to make the operation easier, the opening/closing operation should be performed only with the minimum necessary transport section 3 out of the three blocks mentioned above. The other two, the paper feed section 2 and the paper discharge section 4, may be fixed.

[Problem to be solved by the invention]

However, if the paper feed section 2 and the paper ejection section 4 are fixed, if you want to copy only one page of the open side of a thick document P such as a book, it will be possible to copy only one page of the open side, as shown in Fig. 8. Since there is no place for the pages on one side that do not need to be copied, they must be kept upright, and in order to do this, the manuscript P such as a book is small (and it is impossible to do so because it must be opened at an angle of more than 270 degrees). The problem was that the book would be damaged if opened, and the work would be unstable and cumbersome.

Another method is to rotate the opened book half a turn on a flat surface (not shown) and copy the paper after reversing the left, right, top, and bottom sides of the paper. Not only is this troublesome, but even after copying, you have to align the orientation of the copied paper.
There is a problem in that the troublesomeness is particularly doubled when the manuscript P has a large number of pages.

An object of the present invention is to solve the problem that occurs when half of a document is copied using such a manual.

[Means to solve the problem]

In order to achieve the above object, the present invention provides the following automatic document feeder. That is, the present invention includes a paper feed section that supplies the original, a transport section that transports the supplied original for copying and aligns it with the original reference line on the contact glass, and an ejector that discharges the copied original to the outside. A manually operable automatic document feeder comprising a paper section and a transport section configured to be openable and closable, wherein at least one of a paper feed section or a paper ejection section near the document reference line is connected to the transport section. This is an automatic document feeder configured so that it can be opened and closed independently.

[For production]

In the above configuration, in manual operation, the transport section can be opened and closed, or at least one of the paper feed section or the paper discharge section near the document reference line can be opened and closed independently of the transport section.

When manually copying a thick original such as a book, open the transport section, place the original on the contact glass, and perform the copying operation.

If you want to copy only half of the open side of a thick document such as the book above, open the paper feed section or paper ejection section that is closer to the document reference line in addition to the transport section, and then Align the edge of the document with the document reference line on the glass,
Place the half you want to copy on top of the contact glass, that is, below the transport unit side, and place the half you do not need to copy under the paper feed unit side or the paper output unit side, whichever is closer to the document reference line. , perform a copy operation.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Regarding embodiments of the present invention, how the structure of the present invention is actually embodied will be described below with reference to the drawings, together with its operation.

FIG. 1 is a perspective explanatory view showing the external appearance of an embodiment of the present invention. In the figure, 1 is a main body of an image forming apparatus. 2, a transport section 3 that transports the original P supplied from the paper feed section 2 to a predetermined position for copying, and a paper discharge section 4 that ejects the original P after copying is completed. , automatic document feeder (A
DF') is placed.

The paper feed section 2 and the transport section 3 are provided with handles 2a and 3a for opening and closing, which are necessary for manual copying operations, but in this embodiment, the paper ejection section 4 is not opened and closed, so the handles are not do not have.

Note that a document table 2b on which a document P is placed is attached to the side of the paper feed section 2, and a paper discharge tray 4b is detachably attached to the side of the paper discharge section 4. By removing it when not in use, it avoids taking up unnecessary space in the surrounding area.

FIG. 2 is an internal schematic explanatory diagram of the same embodiment, in which a document P on a document platen 2b protruding from the left end is fed into a conveyance section 3 by the frictional force of a rotating paper feed roller 2c of a paper feed section 2. do.

At this time, the paper feed roller 2c can feed the documents P one by one due to the strong rubbing force of the double-feed prevention roller 2d.

In the conveying section 3, this document P is transferred by rotation of the conveying belt 3b.
is conveyed onto the transparent contact glass 1a of the main body 1, and is used for copying by shining light (not shown) onto its screen from below.

The copied original P is discharged by a paper discharge roller 4c in the discharge section 4 onto a discharge tray 4b or a discharge tray 4d provided on the upper surface of the transport section.

The above is an overview of the functions of the automatic document feeder in the case where the document P-h is smaller than a thin document. Next, a case will be described in which a thin document or a thick document P such as a book is manually copied.

FIG. 3 is an explanatory diagram of the operation of the same embodiment, in which the conveying section 3 is operated to open and close with a handle 3a, independently of the other paper feeding section 2 and paper discharging section 4, with respect to the main body 1 of the image forming apparatus. It is structured in such a way that it can be done easily.

A conveyance belt 3b for automatic document feeding is attached to the inside of the conveyance section 3, but it is not used during manual operation.

Further, a plurality of spring members 3C are attached to the base end of the conveyance section 3 between the main body 1 and the conveyance section 3 is configured to smoothly open and close the conveyance section 3 and to be able to stop even in the open position. There is.

The main body 1 at the bottom of the transport section 3 has a transparent contact glass 1a, and on the contact glass la near the paper feed section 2 there are a center reference 1b necessary for positioning the placed original.
and a scale plate IC.

When manually copying the front side of a thin document P or a thick document P such as a book, place the document P on the contact glass 1a, align one end of the document P with the document reference line 1b, and then Copying can be performed by closing the conveying section 3 and performing a copying operation.

Note that during manual operation, the document table and the ejection tray are not required.

FIG. 4 is also an explanatory diagram of the operation of the same embodiment, but the difference from FIG. The two documents P are placed so that their centers overlap.

When you want to copy the open half of a document P such as a book, align the center line of the document P with this document reference line 1b, and place the page on the side you want to copy on the contact glass.
Place the page that does not require copying on the scale plate 1c on top of a.

In order to secure the 7tliR position of the page on the side that does not require copying, in this embodiment, the paper feed section 2 near the document reference line 1b is configured to be openable and closable.

In this way, by placing the original P, closing the paper feed section 2 and the transport section 3, and performing a copying operation, it is possible to easily copy only half of the original P.

Note that the paper ejection section 4 that is farther from the document reference line 1b is
1 is fixed.

FIG. 5 is a diagram showing another embodiment of the present invention, and the difference between this embodiment and the above embodiment is that the document reference line 1b and scale plate 1c of the contact glass 1a are provided on the paper discharge section 4 side. The paper feeding section 2 is fixed to the main body 1 of the image forming apparatus, and the conveying section 3 and the hinge 4 are connected to each other.
The paper discharging section 4 having the feature d can be opened and closed with respect to the main body 1 independently of each other.

Therefore, the paper feed section 2 does not have a handle, and the transport section 3 and the paper discharge section 4 are provided with handles 3a and 4a, respectively.

In addition, as other embodiments (not shown), the paper ejection section or the paper feed section that is farther from the document reference line may be opened and closed together with the transport section, or when the document is particularly large. There is also a method of configuring the paper feed section, transport section, and paper ejection section so that they can all be opened, so that the large original can be spread out and placed on the main body, including the contact glass. .

As described above for each of the embodiments, the present invention is configured such that at least one of the paper feeding section and the paper discharging section near the document reference line can be opened and closed independently with respect to the transport section. Therefore, operability during manual operation is improved.

Furthermore, when copying only half of a document, there is no need to forcefully bend the document, so even if the document is a thick book, it will not be damaged and the operation will be stable and easy.

〔Effect of the invention〕

As described above, according to the present invention, the opening/closing operation of the paper feeding section or the paper ejecting section near the document reference line and the opening/closing operation of the transport section are made independent of each other, so that thick originals such as books can be manually copied. In this case, opening and closing of the conveyance section becomes easier, thus improving operability.

In addition, since the paper feed section or paper ejection section that is closer to the document reference line can be opened, when you want to manually copy half of the open side of the document, you can open the It has the advantage of securing a place to place documents, eliminating the need to forcefully open thick originals such as books at a large angle, preventing damage to originals, and making copying operations stable and easy.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the external appearance of an embodiment of the present invention, Fig. 2 is an internal schematic explanatory diagram of the embodiment, Figs. 3 and 4 are explanatory diagrams of the operation of the embodiment, and Fig. 5 is Figures showing other embodiments of the present invention, and Figures 6 to 8 are diagrams showing conventional examples. 1a...Contact glass, 1b...Document reference line, 2...Paper feed section, 3...Conveyance section, 4...Discharge Paper department. Applicant: Mita Kogyo Co., Ltd. Representative Patent Attorney Junya Suzuki Figure 1 Figure 3 Figure 5

Claims (1)

[Claims] It consists of a paper feed unit that supplies the original, a transport unit that transports the supplied original for copying and aligns it with the original reference line on the contact glass, and a paper ejection unit that discharges the copied original to the outside. , a manually operable automatic document feeder in which the transport section is configured to be openable and closable, wherein at least one of a paper feed section or a paper ejection section near the document reference line is freely independent of the transport section. An automatic document feeder configured to open and close.