JPH0233063A - Image forming device - Google Patents

Abstract

PURPOSE:To attach a corresponding base paper onto the reverse surface side of a printed OHP film and pile said OHP film in any discharge mode, by installing a printing means, OHP film feeding means, base paper feeding means, obverse surface discharge means, reverse surface discharge means, and a discharge mode selecting means. CONSTITUTION:In the obverse surface discharge mode, an OHP film feeding means, base paper feeding means, and an obverse surface discharge means operate to feed a base paper and an OHP film into a printing means and discharge said articles. Therefore, on the reverse side of the discharged OHP film, the corresponding base paper is arranged. While, in the reverse surface discharge mode, the OHP film feeding means, base paper feeding means, and a reverse surface discharge means operate to feed the OHP film and the base paper into the printing means and discharge said articles. Therefore, also in this case, the corresponding base paper is arranged on the reverse side of the discharged OHP film.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an image forming apparatus, and particularly to an image forming apparatus capable of printing on a film for an over-the-top projector (hereinafter referred to as an OHP film).

[Prior Art] In recent years, Overherad projectors have been widely used when giving lectures at conferences. In this Overhead Rad projector, a transparent OHP film is used as a document.

In order to easily view the content of the original when creating such an OHP film original, an image forming apparatus that ejects an OHP film and a mount in a stacked manner is disclosed in Japanese Patent Laid-Open No. 62-141576, for example. No.

In that device, 0) the IP film and the blank paper for the mount are
Paper is fed and ejected alternately starting with HP film. Thereby, printed OHP films and blank mounts, or printed OHP films and printed mounts, can be stacked alternately in the discharge section.

[Problem to be solved by the invention]

The conventional image forming apparatus has a front side ejection mode in which the printed material is ejected with the printed side facing up, and a back side ejection mode in which the printed material is ejected with the printed side facing down. Among these modes, when operating in the front side ejection mode, the backing paper is stacked on the printed surface (front surface) of the ejected OHP film, so there is a problem that the function of the backing paper is impaired. arise.

This problem becomes particularly noticeable when printing the same image on the mount as the image printed on the corresponding OHP film.

The present invention allows printed O
An object of the present invention is to provide an image forming apparatus capable of stacking HP films by arranging corresponding mounts on the back side thereof.

[Means to solve the problem]

As shown in FIG. 1, the image forming apparatus according to the present invention includes:
It has a printing means, an OHP film supply means, a mount supply means, a front side discharge means, a back side discharge means, a discharge mode selection means, a front side discharge mode control means, and a back side discharge mode control means.

The printing means prints on the supplied printing material. The OHP film supply means supplies the OHP film to the printing means. The mount supply means supplies the mount to the printing means. The surface discharge means discharges the printing materials that have passed through the printing means so as to be stacked with the printed surfaces facing up. The back side discharge means discharges the printing materials that have passed through the printing means so as to be stacked with the printed surfaces facing down.

The ejection mode selection means selects either the front side ejection mode or the back side ejection mode. The front side discharge mode control means controls the OHP film supply means 1 mount so that when the front discharge mode is selected in the discharge mode selection means, first the mount and then the OHP film are supplied to the printing means and then discharged. Supply means 1 controls surface discharge means. The back side ejection mode control means controls the OHP film supplying means two mounts so that when the back ejection mode is selected in the ejection mode selection means, the OHP film is first supplied to the printing means and then the mount is ejected. Controls the supply means and backside discharge means.

[Effect]

In the image forming apparatus according to the present invention, in the front side ejection mode, the 0f (P film supply means 2 mount paper supply means 9 front side ejection means are operated) so as to first supply the mount and then the OHP film to the printing means and eject them. As a result, a corresponding mount is placed on the back side of the discharged OHP film.

On the other hand, in the back side ejection mode, the OHP film is
Next, the OHP
Film supply means 9 Mount supply means.

The back side ejection means is activated. Therefore, in this case too,
A corresponding mount is placed on the back side of the discharged OHP film.

That is, in any of the ejection modes, the corresponding mount is not stacked on the printed surface of the ejected 0f(P film), and the problem that the function of the mount is impaired is solved.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows a laser printer device as an image forming device according to an embodiment of the present invention. In Figure 2,
The device main body frame 10 consists of an upper frame 11 and a lower frame 12,
These are configured to be able to rotate at a predetermined angle relative to each other around a hinge provided on the paper feeding side of the apparatus.

On the left side of the upper frame 11 in the figure, there is rotatably mounted a paper discharge tray section 11a which serves as a paper discharge tray when the printed side of the paper is discharged upward (at the time of front side discharge). When ejecting paper with the printed side facing down (back side ejection), mark 2 as shown in the figure.
As shown by the dotted chain line, this paper discharge tray section 11a becomes a side wall of the upper frame 11, and together with the guide section 11b inside the upper frame, constitutes a paper discharge and conveyance path 13. Further, the guide portion 11b and the upper wall 11c of the upper frame 11 constitute a discharged paper placement portion 14 when the paper is discharged face down.

At the bottom of the lower frame 12, a pair of cassette mounting ports 12a and 12b are provided in two upper and lower stages.

Inside the lower frame 12 is a cassette mounting opening 12a.

A pair of cassette cases 20a and 2 inserted from 12b
0b is placed. Each cassette case 20a, 20
b is placed 'R' on a base 12c formed on the lower frame 12. Each cassette case 20a, 20b has mounting plates 21a, 21b and biasing members 22a, 22, respectively.
It has b.

In the cassette case 20a, for example, a large number of OH
The P films 50 are stored in a stacked state. Further, in the cassette case 2Ob, for example, a large number of sheets of plain paper 51 are stored in a stacked state. Further, a tray 16 for manually feeding paper is foldably attached to the upper part of the right side wall of the lower frame 12 in the figure.

Inside the printer device, an optical system 30 including a laser oscillator is disposed above the printer device. The optical system 30 includes a rotating polygon mirror for scanning the photoreceptor drum 31 with laser light from a laser oscillator (not shown), and various lenses for correcting the tilt of the axis of the rotating polygon mirror and the deviation of the focal point. etc.

Further, a process unit 40 is arranged in the center. This process unit 40 includes a photosensitive drum (image carrier) 41 that is exposed by the optical system 30 to form an electrostatic latent image, and a main charging corona discharger that charges the surface of the drum 41 to a predetermined charge. 42 and a developing bag for developing the electrostatic latent image? i! 43, and a cleaning group 5!4 for removing residual charges and residual toner on the photoreceptor drum 41.
4.

A transfer corona discharger (transfer device) 31 is disposed below the drum 41 at a predetermined distance from the drum 41 to transfer a toner image onto recording paper.

Cassette case 20 attached to cassette attachment port 12a
A paper feed roller 36 for feeding the OHP film 50 in the cassette case 20a to the paper feed conveyance path is provided above the leading end on the paper feed side of the cassette case 20a. Further, above the tip of the paper feed side of the cassette case 20b attached to the cassette mounting port 12b, there is a paper feed roller 37 and an auxiliary paper feed roller for feeding the plain paper 51 in the cassette case 2Ob to the paper feed conveyance path. A roller pair 38 is provided. A pair of registration rollers 34 are provided in the paper feed conveyance path for supplying the paper to the image forming section (transfer section) at a predetermined timing.

A fixing device 32 and a first discharge roller pair 35a are provided downstream of the image forming section. Further, a second ejecting roller pair 35b is provided above the ejecting roller pair 35a for ejecting the recording paper ejected when the recording paper is ejected face down onto the ejected paper stacking section 14. A switch 52 is disposed at the base of the paper ejection tray section 11a to determine whether the paper ejection tray section 11a is in the front ejection position (solid line position) or the back ejection position (imaginary line position). There is.

Next, the operation will be explained.

First, the general operation of this laser printer device will be explained. In the case of cassette paper feeding, the cassette case 20a
Alternatively, the sheets are sent out one by one from the cassette case 20b to the sheet feed conveyance path. The paper is transferred to the registration roller pair 34.
is supplied to the image forming section at a predetermined timing.

On the other hand, a laser beam is emitted from a laser oscillator included in the optical system 30 in accordance with image information from a host computer or the like. The laser beam scans the photoreceptor drum 41 by rotating a rotating polygon mirror, thereby forming an electrostatic latent image on the photoreceptor drum 41 according to the image information. This electrostatic latent image is visualized by toner from the developing device 43 and transferred onto the sheet of paper supplied onto the transfer corona discharger 31. The toner image transferred onto the paper is fixed by the fixing device 32 and discharged by the discharge roller pair 35a. Here, the paper ejection tray section 11a is in the surface ejection position (
When the paper is in the position shown by the solid line), the paper is placed on the paper discharge tray section 11a with the printed side facing up. When the paper ejection tray section 11a is in the back ejection position (the position indicated by the imaginary line), the paper passes through the ejection conveyance path 13 and reaches the ejection paper S! Okibe 1
4 with the printed side facing down.

The printing modes of this laser printer device can be roughly divided into two types: plain paper 5 stored in cassette case 2 (lb.
1. A normal print mode in which printing is performed using the above operations;
OHP film 50 stored in cassette case 20a
There is an OHP print mode in which printing is performed. The OHP printing mode includes a printing mode in which printing is performed only on the OHP film 50, and a printing mode in which plain paper 51 is used as a mount. Furthermore, modes that use a mount include a mode in which the same printing as on the OHP film corresponding to the mount is performed, and a mode in which printing is not performed on the mount. These modes are set in advance by operating keys on an operation panel (not shown) before starting the printing operation. On the other hand, by detecting the orientation of the paper ejection tray section 11a by the switch 52, a front ejection mode in which the paper is ejected with the printed side facing up, and a back ejection mode in which the paper is ejected with the printed side facing down are set. Ru.

During printing, the laser printer operates as shown in the flowcharts of FIGS. 3 and 4 depending on the settings of each mode.

First, in the plain paper printing mode, the determination at Pl in FIG. 3 is No, and the program proceeds to P2. Based on the above printing operation, plain paper is fed in P2, and printed on the plain paper in P3 and then discharged. Next, in P4, it is determined whether printing of the set number of sheets has been completed. If the number of printed sheets has not reached the set number, P2 and P3
Repeat the action. At P4, if it is determined that printing of the set number of sheets has been completed, the printing operation is ended.

If the OHP print mode is set, the determination at Pl is Yes, and the process advances to P5 in FIG. In P5,
Determine whether the mode is set to require a mount. If the mount is not required, proceed to P6. Based on the above printing operation, the OHP film is fed at P6, and the OHP film is fed at P6.
1, the OHP film is printed and discharged.

Next, in P8, it is determined whether printing of the set number of sheets has been completed. If the number of printed sheets has not reached the set number, operations P6 and Pl are performed again. In P8, if it is determined that printing of the set number of sheets has been completed, the printing operation is ended.

In the OHP printing mode, if the mount function is requested, the determination in P5 is Yes, and the process advances to P9.

In P9, it is determined whether the set ejection mode is the front side ejection mode or the back side ejection mode. If the mode is surface discharge mode, proceed to PIO. Based on the above printing operation, plain paper is fed in Plo. Next, it is determined whether or not to print on plain paper based on the pH. If the mode for printing on mount paper is set, the judgment will be Yes and Pl.
Proceed to step 2. In Pl2, the same printing as the next printing on the OHP film is performed on the supplied plain paper, and the Pl2
Proceed to step 3. On the other hand, if the mode in which printing is not performed on the mount is set at pH, the process proceeds to Pl4. Pl
In step 4, the supplied plain paper is ejected as is without printing, and the process proceeds to Pl3. At P13, the OHP film is fed, and at P15, the OHP film is printed and discharged. In this case, the OHP film and plain paper are discharged onto the paper discharge tray section 11a (FIG. 2) and stacked one after another face up. That is, the discharged O H
The P films are stacked with a corresponding mount placed on the back side. Next, in Pl6, it is determined whether printing of the set number of sheets has been completed. If the number of printed sheets has not reached the set number of sheets, the operations from PIO to P15 are performed again.

At Pl6, if it is determined that printing of the set number of sheets has been completed, the printing operation is ended.

When OHP printing mode is used and liner function is required, if output mode is back side output mode, P
Proceed from 9 to PI3. Based on the above printing operation, PI3
, the OHP film is fed, and the PlB feeds the OHP film.
The film is printed and discharged. In PI3, plain paper is fed. Next, in P2O, it is determined whether or not to print on plain paper. If the mode for printing on the mount is set, the determination is Yes and the process advances to P21. In P21, the same printing as on the previously printed OHP film is performed on the supplied plain paper, and then in P22
Proceed to. On the other hand, in P2O, if a mode in which printing is not performed on the mount is set, the process advances to P23. P2
In step 3, the supplied plain paper is not printed, but is ejected as is, and the process advances to P22. In this case, the plain paper and OHP film are discharged to the discharge paper placement section 14 (FIG. 2).

They are stacked face down one after the other. That is, the discharged OHP films are stacked with corresponding mounts arranged on the back sides thereof. Next, in P22, it is determined whether printing of the set number of sheets has been completed. If the number of printed sheets has not reached the set number of sheets, the operations of P17 to P23 are performed again. In P22, if it is determined that printing of the set number of sheets has been completed, the printing operation is ended.

Note that the present invention is not limited to the case where it is applied to the laser printer device as described above (it can also be applied to various image forming devices such as a copying machine). If plain paper is stored in the printer, it can be used as a printer for plain paper.
It can also be adopted in an image forming apparatus exclusively for HP film. The present invention can also be applied to an image forming apparatus that always uses a mount. Furthermore, the image forming apparatus may not be able to switch the setting mode of whether or not to print on a mount.

〔Effect of the invention〕

According to the image forming apparatus according to the present invention, a corresponding mount is placed on the back side of the discharged OHP film in either the front side discharge mode or the back side discharge mode. That is, in any of the ejection modes, the mount is not stacked on the printed surface of the ejected OHP film, so the problem that the function of the mount is impaired is solved.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram showing the configuration of the present invention, FIG. 2 is a cross-sectional configuration diagram of a laser printer device according to an embodiment of the present invention, and FIGS. 3 and 4 show control operations of the laser printer device. It is a flowchart. DESCRIPTION OF SYMBOLS 10... Process unit, lla... Paper discharge tray part, 14... Paper discharge tray part, 36.37... Paper feed roller, 50... OHP film, 51... Plain paper,
52...Switch. Patent applicant Agent: Sanda Kogyo Co., Ltd.
Patent Attorney Yukio Ono Figure 1

Claims (1)

[Claims] (1) Printing means for printing on the supplied printing material; OHP film supply means for supplying an OHP film to the printing means; mount supply means for supplying a mount to the printing means; a front side ejection means for ejecting printed materials in a stacked manner with the printed side facing up; a back side ejecting means for ejecting the printed materials that have passed through the printing means so as to be stacked with the printed side facing down; a front side ejecting mode a discharge mode selection means for selecting a front discharge mode or a back discharge mode; and a discharge mode selection means configured to first supply the liner and then the OHP film to the printing means and discharge them when the front discharge mode is selected in the discharge mode selection means. , a front side discharge mode control means for controlling the OHP film supply means, the mount supply means, and the front side discharge means, and when the back side discharge mode is selected in the discharge mode selection means, the OHP film is first loaded and then the mount is loaded. An image forming apparatus comprising: a backside discharge mode control means for controlling the OHP film supply means, the mount supply means, and the backside discharge means so as to supply the OHP film to the printing means and discharge the film.