JPH02232664A - Recorder capable of double-sided recording - Google Patents

Abstract

PURPOSE:To readily remove a jammed paper without reducing the number of paper feed cassettes by setting a paper piling direction nearly vertical and providing a means which inverts a circulator and piles and feeds sheets on the opposite side to the paper feed side of paper feed cassettes. CONSTITUTION:The means 24 which inverts a circulating route used for double- sided recording and piles and feeds sheets is provided on the opposite side to the paper feed side of the paper feed cassettes 1 to 4 by setting the paper piling direction nearly vertical. Consequently, the recorder is designed to be compact, and the means 24 does not occupy the disposing place of the paper feed cassettes 1 to 4, so that the opposite side to the paper feed cassettes 1 to 4 of the means 24 can be used for a place to remove a jammed paper. Thus, a jammed paper can be readily removed without reducing the number of disposed paper feed cassettes.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device capable of double-sided recording, such as a double-sided copying machine described in Japanese Unexamined Patent Publication No. 60-8863. The present invention relates to a recording apparatus in which the force set is mounted in multiple stages from the front side of the recording apparatus perpendicular to the paper feeding direction, like the paper feeding cassette described in Japanese Patent Application Laid-Open No. 59-4546FI.

[Conventional technology]

As a recording device capable of double-sided recording as described above, the circulation path is reversed to perform double-sided recording. Japanese Patent Laid-Open Publication No. 114227/1983 discloses a device in which the loading and unloading means are stacked one on top of the other in the same way as multistage paper feeding cassettes. Such a recording device uses a reversal of the circulation path. Not only is there a problem in that the number of paper feed cassettes is reduced by the number of paper feed cassettes provided, but also the reversal. Another problem is that when a jam occurs in the loading and unloading means, it is troublesome to remove the jammed paper. Inversion.
If a jam occurs in the loading and unloading means, it is almost impossible to remove the jammed paper unless it is reversed and the loading and unloading means is pulled out in a horizontal direction perpendicular to the paper feeding direction. Paper is easily damaged.

[Problem to be solved by the invention]

The present invention has been made in order to solve the above-mentioned problem, and the reversing, loading and unloading means of the circulation path does not reduce the number of paper feed cassettes, and the part of the reversing, loading and unloading means does not reduce the number of paper feed cassettes. To provide a recording device capable of double-sided recording in which paper feed cassettes are arranged in multiple stages, allowing easy removal of jammed paper when a jam occurs, and the recording device can be configured compactly.

[Failure to solve the problem]

In the present invention, a plurality of paper feed cassettes are mounted in multiple stages from the front side of the recording device perpendicular to the paper feeding direction, and paper is passed from any one of the paper feed cassettes through a toner image transfer fixing means to form a recorded image on one side. Then, the recording paper is reversed and passed through the toner image transfer fixing means again through a circulation path including a loading and feeding means to obtain a double-sided recording paper having a recorded image on the back side as well, which can be discharged outside the machine. A double-sided recording device capable of recording, characterized in that the circulation path reversing, loading and unloading means is provided on the opposite side of the paper feed cassette from the paper output side, with the direction of the loaded paper being substantially perpendicular. The present invention is a recordable recording device, and this configuration achieves the above object.

[Effect]

That is, in the recording apparatus of the present invention, the circulation path is reversed to perform double-sided recording. Since the loading/unloading means is provided on the opposite side of the paper feeding cassette from the paper feeding side with the direction of loaded paper being almost perpendicular, the recording apparatus can be configured compactly and can be reversed. Since the loading/unloading means occupies the placement position of the paper cassette, the number of paper cassettes does not decrease, and the opposite side of the loading/unloading means from the paper cassette side is released for removing jammed paper. This allows the jammed paper to be easily removed without damaging it.

〔Example〕

The present invention will be explained below using illustrated examples.

The figure is a schematic front view showing an example of the recording device of the present invention, and in the figure, 1 to 4 are B 5 , A 4' . B4,A
Paper feed cassettes loaded with three sizes of paper, 5 to 8 are feed rollers that feed out one sheet of paper from paper feed cassettes 1 to 4 by frictional force, 9 to I2 are feed rollers 5 to 8 that send out the paper. Conveyance roller 13 for sending to registration roller l5
．． 14 is a relay conveyance roller between the conveyance rollers 9 to 12 and the registration roller 15, l6 is an image forming drum that rotates in the direction of the arrow and a toner image is formed on the surface by an image forming means (not shown), and l7 is an image forming drum. A transfer device transfers the toner image on the drum 16 onto the paper fed by the registration roller l5, a separator 18 separates the transferred paper from the image forming drum l6, and a separator 19 receives the paper separated by the separator l8. A conveyor belt 2l conveys the paper to which the toner image has been fixed by the fixing roller 20 to an ejection port.
23 is a one-sided, two-sided switching gate that has a clockwise rotation position shown by a solid line leading to the circuit 22 and a counterclockwise rotation position shown by a dotted line leading to the circulation path. Flip the paper. The counterclockwise rotation position shown by the dotted line leading to the loading and unloading means 24, and the reverse position. Loading and sending means 2
4? The paper sent out from the
an inlet/outlet switching gate 24a which switches between the clockwise rotating position shown by the solid line leading toward the registration roller l5; 24b
24e is a tray substrate, and 24d is a tray substrate 2 at one end.
The tray substrate 24c is driven by a tray driving means 24e, such as an electromagnet, which is hinged to the tray substrate 24c and provided on the tray substrate 24c.
24f is tray 2, which is rotated from a position close to the tray to a position where the paper is brought into pressure contact with the feed roller 24b.
A lower end regulating plate that receives the lower end of the paper fed above 4d.
It is moved to a position according to the paper size by a lower end regulating plate driving means 24g such as an electric feed screw. 24h is a cover whose lower end is hinged to the tray substrate 24c and can be rotated counterclockwise from the closed position shown in the figure; 241 is a cover that can be reversed by the entrance roller 24a; Loading and sending means 24
It is an elastic guide that guides the single-sided recording paper fed into the tray 24d and lightly presses it against the tray 24d, and its upper end is fixed to the cover 24h.

The paper feed force sets 1-1 to 1-4 are inserted into the recording apparatus from the front side of the recording apparatus perpendicular to the paper feeding direction, that is, from the front side of the plane of the drawing. The paper feed cassettes 1 to 4 installed as shown are selectively selected by a control panel (not shown) or automatic paper size selection means.

Based on this selection and information on the selection of double-sided recording by the control panel, the lower end regulating plate driving means 24g of the reversing, loading and discharging means 24 moves the lower end regulating plate 24r to a position corresponding to the selected paper size, that is, on the tray 24d surface. The leading edge of the reversed paper stacked on top does not reach the inlet roller 24a, and when the tray 24d is rotated counterclockwise by the tray driving means 24e, the leading edge of the paper reaches the feeding roller 2.
Also in the position where it comes into pressure contact with 4b! Korasu.

When single-sided printing is selected on the control panel, the number of sheets to be printed, the paper size, etc. are also selected, and printing is started, the single-sided printing operation is performed as follows.

That is, by selecting single-sided recording, the single-sided and double-sided switching gate 21 is switched to the clockwise rotating position indicated by the solid line, and the output port is opened.
22 and closes the passage to the circulation path.

Then, paper is sent out from a cassette corresponding to the paper size among the paper feed cassettes 1 to 4, a toner image is transferred to the paper from the image forming drum l6, and the toner image is fixed by the fixing roller 20. The single-sided recording paper is discharged from the discharge port 22 to the outside of the machine, and the above operation is repeated a specified number of times.

Furthermore, when double-sided printing is selected on the control panel, the number of sheets to be printed, the paper size, etc. are also selected, and printing is started, the double-sided printing operation is performed as follows. That is, when double-sided recording is selected, the single-sided and double-sided switching gate 21 is switched to the dotted line position to open the passage to the circulation path and close the passage to the discharge port 22, and the receiving/discharging switching gate 23 is switched to the dotted line position. By switching to the clockwise rotating position and selecting double-sided recording and paper size, the lower end regulating plate 24f is brought to a position corresponding to the paper size as described above. Then, the toner image is transferred and fixed onto the paper sent out from one of paper cassettes 1 to 4 in the same way as in the case of single-sided recording, but in this case, the single-sided recording paper enters the circulation path and rolls around the entrance roller. 24a in the feeding direction and guidance of the elastic guide 24i, the loading and unloading means 2
It is sent onto the tray 24d of No. 4. This feeding is performed a specified number of times, and when it is finished, the single-sided, single-sided, double-sided switching gate 21 is switched to the clockwise rotation position indicated by the solid line.
At the same time as the receiving/discharging switching gate 23 is switched to the solid line position, the entrance roller 24g, relay conveyance roller 25, etc. begin to rotate in the discharging direction. Therefore, the tray driving means 24e rotates the tray 24d counterclockwise to press the single-sided recording paper against the feed-out roller 24b, and as the feed-out roller 24b rotates to feed out the paper in the counterclockwise direction, the single-sided recording paper is reversed and 8F is inserted. Feeding means 24
One piece will be sent out.

The single-sided recording paper sent out by the sending roller 24b is sent to the image forming drum l6 by the large-edge roller 24a1, relay conveyance rollers 25, 14, and registration roller l5, the toner image is transferred from the image forming drum 16 to the back side, and the toner image is transferred to the fixing roller. 20, the toner image is fixed, and the discharge port -
It is discharged to the outside of the machine by the roller 22. This ejection of the double-sided recording paper is repeated until the recording paper in the reversing, loading and discharging hand 24 runs out. When the reversing, loading and discharging means 24 runs out of recording paper, the tray driving means 24e rotates the tray 24d clockwise to a position close to the tray substrate 24c and stops.

Inversion. Although the single-sided recording paper fed into the loading/discharging means 24 is in a substantially vertical direction, the upper part is appropriately pushed toward the tray 24d by the elastic guide 24i, so that it is neatly loaded onto the surface of the tray 24d without buckling. This elastic guide 24i is connected to the tray 24d.
rotates counterclockwise and feeds out the single-sided recording paper Roller 2
When it is brought into pressure contact with the single-sided recording paper 4d, it is pushed by the single-sided recording paper and bends as shown by the dotted line, so there is no problem in feeding the single-sided recording paper.

Inversion. When a jam occurs in the loading and discharging means 24, by rotating the cover 24h counterclockwise and opening it, the jammed paper can be removed without having to reverse or pull out the loading and discharging means from the recording device. I can do it.

〔Effect of the invention〕

The recording device capable of double-sided recording of the present invention has a reversal of the circulation path, an I
Since the feeding and feeding means is provided on the side opposite to the paper feeding side of the multi-stage paper feed cassette with the direction of loaded paper being almost vertical, it is compactly constructed and can be reversed.
The loading and unloading means does not reduce the number of paper cassettes and can be reversed. When a jam occurs in the loading and discharging means, the jammed paper can be removed without reversing or pulling out the loading and discharging means from the recording apparatus.

[Brief explanation of the drawing]

The figure is a schematic front view showing an example of the recording device of the present invention. 1 to 4...Paper feed cassette 5 to 8...Feeding roller l5...Registration roller l6...Image forming drum 20...Fixing roller 2l...Single-sided and double-sided switching gate 22...Ejection Outlet-ra 23...Acceptance-output switching gate 24...Reversal, Il insertion and delivery means 24a...Inlet roller
24b...Feeding roller 24c...Tray l
Board. 24d・}-Ray 24e...Tray driving means 24'...Lower end regulating plate 24g...Lower end regulating plate driving means

Claims (1)

[Claims] A plurality of paper feed cassettes are installed in multiple stages from the front side of the recording device at right angles to the paper feeding direction, and paper from any of the paper feed cassettes is passed through a toner image transfer fixing means to produce a recording paper having a recorded image on one side. Then, the recording paper is reversed and passed through the toner image transfer fixing means again through a circulation path including a loading and feeding means to obtain a double-sided recording paper having a recorded image on the back side as well, which can be discharged outside the machine. In the device,
A recording device capable of double-sided recording, characterized in that a means for reversing a circulation path and loading and discharging the paper is provided on the opposite side of the paper feed cassette from the paper dispensing side, with the direction of the stacked paper being substantially perpendicular.