JPH01214879A - Image forming device - Google Patents

Abstract

PURPOSE:To improve operability by operating an automatic document feeding means (ADF) with the aid of a signal from a detecting means provided on a manual insertion paper feeding means so that the ADF and the manual insertion paper feeding means are interlocked. CONSTITUTION:The title device becomes an ADF mode by depressing an ADF key and a document insertion display is lighted. A document 42 is set on a document platen 41 in the manner of butting against a separating blade 44, then a document set sensor 47 detects it, and the document insertion display is turned off. A manual insertion switch is depressed in this state, a board- shaped member 16 is moved upward, a carrier path 6 is opened, and a paper stopping by means of a stopper system 11 is released. The sheet 10 is inserted from a manual insertion port B, and detected by the sensor 30, then carrier rolls 7 and 7' are rotated and feed the sheet 10 on the carrier path 6. The sheet 10 is detected by the sensor 31, further fed, stopped once just before carrier rolls 8 and 8', and sent to the roll 8 when a transferring timing comes. The ADF device is driven when the sheet 10 reaches to the sensor 32, and a toner image is formed on a photosensitive body from the document 42 and transferred to the sheet 10.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an image forming apparatus such as a copying machine in which a manual paper feeder and an automatic document feeder are linked together.

2. Description of the Related Art As an image forming apparatus of this type, one is known which is equipped with a manual paper feeding means for feeding manual paper inserted from a manual paper feed slot, and an automatic document feeding means (hereinafter referred to as ADF). It is being

Problems to be Solved by the Invention Incidentally, in the device described above, the ADF and manual paper feeding means are not interlocked, and what is interlocked with the ADF is a separately provided automatic paper feeding means. Therefore, since the ADF cannot be used when manually feeding paper, there is a problem in that the operability immediately deteriorates.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an image forming apparatus that solves the problems of the conventional apparatus and can use an ADF even when manually feeding paper, thereby improving operability.

Means to solve problems In order to achieve the above-mentioned object, this invention.

The present invention is characterized in that the ADF is operated by a signal from a manual paper detection means provided in the manual paper feeding means.

Effect By adopting the technical means mentioned above, ADF
The manual paper feeding means is linked, and even when feeding manually, the AD
F can be used, and operability can be improved.

Example An embodiment of the invention will be described with reference to the drawings.

1 and 2 show manual paper feeding means provided in the image forming apparatus.

This manual paper feeding means 1 is provided in conjunction with a normal automatic paper feeding means 4 that feeds paper from a paper passing port A to a photoconductor 3 via a pair of transport rollers 2, 2'. A manual feed port B is provided at the front, and a paper transport path 6 is formed between the manual feed port B and the pair of transport rollers 2.degree. 2'. In the conveyance path 6, a pair of conveyance rollers 7, 7' and a pair of conveyance rollers 8, 8' are arranged at a predetermined interval.

A stopper mechanism 11 is provided between the manual feed port B and the transport roller pair 7.7' for blocking the paper 10 inserted from the manual feed port B.
is provided. This stopper mechanism 11 is shown in detail in FIG.

For example, a pivot 1 is attached to a bracket 12 fixed to the main body of a copying machine.
has an arm 15 swingably mounted by 3;
The upper center of a gate-shaped plate member 16 is attached to the tip of the arm 15 on the opposite side from the pivot 13 by a pivot 17. Reference numeral 18 denotes an elongated hole in which the shaft 20 provided on the bracket 12 engages with play, and the arm 1 is inserted through this elongated hole 18.
5 is designed to swing with the pivot @13 as the fulcrum,
A solenoid 20 for swinging is installed on the arm 15 above the pivot shaft 13 with its plunger connected by a pin 21.

A cushioning material 23 is attached to both sides of the lower part of the plate-like member 16, and when not in the manual feed mode, the cushioning material 23 contacts the lower guide plate 24 that forms the conveyance path 6 evenly on the left and right sides as shown in FIG. The transport path 6 is closed to prevent paper 10 from being inserted. In the manual feed mode, the cushion material 23 of the plate member 16 is located above the upper guide plate 25, and the conveyance path 6 is opened.

Above the plate member 16, there is a solenoid when in manual feed mode,
The abutting member 26, which the plate-like member 16 which is moved upward together with the arm 15 that is swung by the id 20, comes into contact with, is transported to the bracket 12 #! 6 lower guide plate 24
A cushion material 27 is attached to the lower surface of the abutting member 26 to soften the abutting noise.

30, 31, and 32 are paper IOs inserted manually
This is a sensor that detects

FIG. 4 shows an ADF. In this ADF40, 41
4 is a document table on which the document 42 is set; 43 is a separation roller;
4 is a separation blade, 45 is a call bell I-, 46 is an entrance guide Mylar, 47 is a document set sensor, 48.48
' is a pair of pull-out rollers.

The operation of the embodiment described above will be explained based on the timing chart shown in FIG. 5 up to the feeding of the first document.

ADF key (or S A DF key) not shown 5
When 1 is pressed, the mode becomes ADF (SADF) mode 52, and a document insertion display 53 (not shown) lights up. Place the original 42 into the ADF 40 so that the leading edge hits the separation blade 44.
When the document 42 is set on the document table 41, the document set sensor 47 detects the document 42, and the document insertion display 53 turns off.

When the manual feed push button switch (not shown) is pressed in this state, the plunger of the solenoid 20 is sucked, the arm 15 swings clockwise in FIG. 3 about the pivot J3, and the plate member 16 moves upward. Move and contact member 2
6 and opens the conveyance path 6.

As a result, the paper blocking by the stopper mechanism 11 is released.

After release, insert paper 10 from manual feed slot B.

When this inserted paper is detected by the sensor 30, the conveyance roller 7 is rotated by an opening motor (not shown). Next, the conveying path 6 is moved by the rotating pair of conveying rollers 7, 7'.
When the leading edge of the paper 10 being fed is detected by the sensor 31, the transport roller 8 begins to rotate by a drive motor (not shown), and the paper 10 further moves along the transport path 6 through the pair of rollers 7, 7.
', it is sent to just before the pair of transport rollers 8, 8'.

At this time, (1) in analog, if the timing is right to create the exposure of the original image on the photoreceptor and transfer it onto the paper lO, (2) in digital, the timing can be set from reading the original image to the LD onto the photoreceptor. When the timing is right for writing and transferring onto the paper 10, the roller 7 continues to rotate and the paper 10 reaches the roller 8. In both cases (1) and (2) above, the transfer is stopped until the transfer timing is established.

When the leading edge of the paper 10 reaches and is detected by the sensor 32, a detection signal from the sensor 32 causes the paper feed motor 55 and the paper feed clutch 56 (not shown) of the ADF 40 to be turned on and off at a predetermined timing. Separation roller 43. The predetermined timing 6 when the pull-out roller 48 is rotated is, for example, when the leading edge of the paper 10 is detected by the sensor 32.
If you feed the M document 42 from the ADF 40 when the image is reached, the timing of reading the image will be too high.
Then, the timing is adjusted by stopping at -, and when the timing is reached, the speed is adjusted to the conveying speed of the paper 10. Take it like this.

As the pick-up belt 45 rotates, the entrance guide mylar 46 presses the document 42, and the first separation roller 43 and separation blade 44 cause only the lowest document 42 set on the document table 41 to move toward the pull-out rollers 48, 48'. transported. When the separation roller 43 makes one rotation, a one-rotation sensor 57 (not shown) turns the paper feed clutch 56 to 0F.
F (Along with this, the brake clutch 58 (not shown) is turned on in the opposite direction.) C, calling belt 45, separation roller 43
The rotation of the original 42 is stopped, and only one original 42 is fed.

Since the paper feed motor 55 is still on after the brake clutch 58 is turned on, the pull-out roller 48 continues to rotate, and the document 42 continues to be fed over a contact glass (not shown). and.

An image is read using predetermined illumination and an optical system, and a toner image is formed on the photoreceptor, and this toner image is transferred to the manual paper 10.

The solenoid 20 may be turned off when the leading edge of the paper IO reaches the sensor 32, whereby the cushion material 27 of the contact member 26 falls onto the paper 10, and the conveyance path 6
will be closed. During this closing, the cushion material 27 of the contact member 26 applies an equal load to the left and right sides of the paper 10, so that
The paper 10 is not skewed, and since the solenoid 20 is turned off at least until the trailing edge of the paper 10 passes the sensor 31, the next paper 10 is not continuously fed. Alternatively, the solenoid 20 may be turned off at the time when the trailing edge of the paper 10 passes the sensor 30.

In the above case, when the number of copies is 2 or more, if the R original type is fixed and the original 42 can be stopped on the contact glass, the manual feed paper 10 is moved to the sensor 3.
A similar copy can be made by simply delaying the timing after reaching 2. Even if the document 42 completely passes through the contact glass in the document moving type, the same applies if digital memory is available.

Also, one step may be reversed. That is, in the above case, the manual feed push button switch was pressed after pressing the ADF key 51, but the AD
You can press the F key 51 to set the original 42, or
After pressing the manual feed push button switch, insert the paper 10.

The original 42 may be set by pressing the ADF key 51 while the paper is stopped at the position where it reaches the sensor 32.

Effects of the Invention Since the present invention has the above-described configuration, it is possible to operate the ADF and automatically feed a document simply by manually feeding paper, and unlike conventional paper feeders, the ADF and manual paper feeding means work together. This has the excellent effect of improving the operability, which was poor when manually feeding paper.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view showing a manual paper feeding means etc. showing an embodiment of the present invention, Fig. 2 is a schematic plan view of the same, Fig. 3 is a side view of the stopper mechanism, and Fig. 4 is a diagram of the ADF. A schematic front view and FIG. 5 are timing charts. 1...Manual paper feeder 4...Automatic paper feeder 30.31, 32...Sensor 40...Automatic document feeder (ADF) A...Paper passing port B...Manual feed Patent applicant Rico Co., Ltd. - Figure 2q Figure 4

Claims (1)

[Claims] 1. In an image forming apparatus equipped with a manual paper feeding means for feeding manual paper inserted from a manual paper feed slot and an automatic document feeding means, a signal from a manual paper detection means provided in the manual paper feeding means An image forming apparatus characterized in that the automatic document feeding means is operated by: