JPH02178149A - Recorder - Google Patents

Abstract

PURPOSE:To make improvements in the promotion of miniaturization and operability of a recorder by making a discharge port of paper after printing usable with a paper feed port in combination. CONSTITUTION:When a paper feed button B is pushed, a plunger 32 is excited, and a tip of a paper feed guide plate 39 is rotated, thus a paper feed port 34 is formed. Simultaneously with a tip 14a of paper 14 hit on a nip of a pair of feed and discharge paper rollers 37, a paper detecting lever 38 is also pressed by the paper tip and goes down, whereby the presence of paper is detected, and the feed-discharge rollers 37 and a sub-scanning roller pair 35 continuously rotated, feeding the paper, and this paper is drawn into space between guides 36, so that a rear end 14b of the paper is set to a position where it is not slipped out of the paired sub-scanning rollers 35. In addition, if the paper feed guide plate 39 stops current-energization to the plunger 32 at a time when the paper detecting lever 38 is reset to its original position, it goes down up to a spot in contact with a paper discharge tray 30 with its own weight, thus the paper feed port 34 comes to a paper discharge port 40.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device, and more particularly, to a recording device such as a copying machine or a printer.

[Prior Art] Hereinafter, a conventional example will be described using a recording device that performs printing by ejecting droplets as an example.

In FIG. 7, the paper inserted into the paper feed port 20 is supported by the paper feed tray 19, guided by the paper feed roller 21 to the paper guide 22, and conveyed to the sub-scanning roller pair 5.

The print head 1 is guided by guide rails 2a and 2b and moves in the width direction of the paper while printing a print width on the paper.

The paper is sequentially conveyed by the printing width by the sub-scanning roller 5, and by repeating printing and conveyance alternately, printing is performed on the entire paper.

After printing, the paper is discharged to a paper discharge tray 10 by a paper discharge roller 7.

[Problems to be Solved by the Invention] In the conventional example described above, as shown in FIG. 7, paper is fed on the right side of the main unit, and the printed paper is discharged to the left side of the main unit.

Therefore, in addition to the installation location of the machine body, space for the operator is required on the left and right sides, resulting in the disadvantage that the machine cannot be operated unless there is a large installation space.

In addition, in the case of this type of device, it is customary to install the operation section on the left side of the figure where the paper is ejected after printing, with the front of the device as the front side. Another problem arises in that the paper feed port 20 is hidden at the back of the shelf, making it completely unusable.

Furthermore, if a U-turn guide 23 is provided as shown in FIG. 8 and the paper is fed from the left side, the entire apparatus will be moved in the height direction by the amount of the U-turn guide 23 and paper feed roller 21. This has the disadvantage of increasing the size.

[Means for Solving the Problems (and Effects)] In order to solve the above-mentioned problems, the present invention makes it possible to use the paper discharge port after printing also as the paper feed port. This allows operations related to printing of the recording device to be performed only on one side of the recording device.

Embodiment FIG. 1 shows a sectional view of an embodiment of the present invention. The left side of this figure is the front of this recording device.

The print head 1 performs printing by ejecting droplets, and is guided by guide rails 2a and 2b, and is moved in the paper width direction by a stepping motor (not shown) to print each print width on the paper. Do this.

The sub-scanning roller pair 35 is driven by a stepping motor Mo, and transports the paper by the printing width during printing. Further, when feeding paper, the paper is continuously rotated in the opposite direction to that during printing to draw the paper between the guide plates 36.

The paper feed/discharge roller 37 is driven to rotate in forward and reverse directions in synchronization with the sub-scanning roller 35. During one rotation, the paper is fed, and during the other rotation, the paper is conveyed, and the paper is transferred to the paper output tray. Drain on top of 30.

The paper detection lever 38 that detects the presence or absence of paper is movable about a rotating shaft 38a at a stepped portion provided within the paper passing area of the paper feed/discharge roller 37, and the top of the arcuate portion 38b It is mounted in a balanced manner by a spring SP so that it rests at a position not lower than the nip position of the roller 37.

Therefore, regardless of whether the paper is conveyed from the left or right side in the figure, if the paper is caught in the nip of the paper feed/discharge roller 37, the detection lever 38 swings downward, cuts off the photo sensor S1, and It is possible to generate a positive electrical signal.

The paper feed guide plate 39 is rotatably attached to the paper ejection tray 30 at one end with a rotation center 39a.
The other end is engaged with a plunger 32 by a link 31 provided outside the paper passing area. 33 is a schematic diagram showing a unit of the electrical system of the present device.

In Figure 1, if you press paper feed button B, plunger 3
2 is excited, and the paper feed guide plate 39 rotates so that its tip faces the nip of the paper feed/discharge roller pair 37, as shown in FIG. 2, and the paper feed port 34 is formed. And the third
As shown in the figure, when the paper 14 is inserted into the paper feed port 34 along the paper feed guide plate 39, the leading edge 14a of the paper 14 hits the nip between the pair of paper feed/discharge rollers 37, and at the same time the paper detection lever 38 is pushed down by the leading edge of the paper, and the presence of paper is detected. Subsequently, a pair of paper feed/discharge rollers 37 and a pair of sub-scanning rollers 35 continuously rotate clockwise in FIG. 3 to feed the inserted paper and draw it between the guides 36.

FIG. 4 shows a state in which the fed paper 14 is stopped in the recording apparatus at - time. The stopping position of the paper 14 is determined by counting after the trailing edge 14b of the paper 14 passes the paper detection lever 38 and the paper detection lever returns to its original position. It is set at a position where it cannot be removed (the position of point (B) in Fig. 4). Further, if the plunger 32 is de-energized when the paper detection lever 38 returns to its original position, the paper feed guide plate 39 will be lowered by its own weight until it touches the paper ejection tray 30, and the paper feed port 34 will be closed to the paper. This becomes a paper discharge port 40.

Next, by inputting a print command signal, the pair of sub-scanning rollers 35 and the pair of paper ejection rollers 37 are rotated counterclockwise to transport the paper by the printing width, and the print head 1 is caused to scan in the width direction of the paper. Printing can be performed on paper by jetting droplets at the same time.

After printing, the original leading edge 14a of the paper 14 is moved to the paper detection lever 3.
The paper 14 is ejected onto the paper ejection tray 30 by rotating the pair of paper feed/ejection rollers 37 counterclockwise until the paper 14 comes off.

If you want to feed the next sheet, remove the ejected sheet and then press the sheet feed button. As a result, the paper feed guide 39 rises and the paper discharge port 40 changes to the paper feed port 34, so that paper can be fed again.

With the above configuration, if the operation panel is installed on the left side of the main unit in Figure 1, paper feeding and ejection can all be done on the left side of the figure, saving the area required for operation. You can measure the space.

It is also possible to use the entire device while it is stored on a shelf or the like.

Furthermore, since the paper is fed by rotating the paper conveyance roller in the opposite direction, there is no need to provide a pair of rollers exclusively for paper feeding, and the apparatus can be simplified and costs can be reduced.

Also, since a paper feed guide 39 is attached to the paper output tray 30,
The paper output tray can also be used as a paper feed tray, making it possible to downsize the device.

[Other Embodiments] (i) In this embodiment, the paper feed guide plate 39 is swung relative to the paper ejection tray 30 and used as both the paper feed port and the paper ejection port. As shown in the figure, the same effect can be obtained even if the paper feed tray 56 is fixed and installed on the paper discharge tray 50 in advance.

(ii) In this embodiment, the paper feed guide plate 39 is displaced by the plunger 32, but the paper feed guide plate 39 is displaced by forward and reverse rotation from a paper feed/discharge roller or the like via a gear, a clutch, etc. It is also possible to displace it. 6th
The figure shows the embodiment in which the paper feed guide 69 is raised and the paper feed slot 64
This figure shows the state in which .

In the figure, an arc-shaped gear 65 centered at 69a attached to the tip of the paper feed guide 69 outside the paper passing area is a gear 65 attached to the shaft end 37a of the paper feed/discharge roller 37 via an electromagnetic clutch 67. It meshes with the. Also gear 66
rotates integrally with the paper feed/discharge roller 37 by energizing the electromagnetic clutch 67 .

With the above configuration, in order to feed paper, when the paper feed button (B') is pressed, the electromagnetic clutch 67 is energized and the paper feed/discharge roller 37 is rotated clockwise in the figure. ,
Since the gear 66 rotates together with the paper feed/discharge roller 37, the arc gear 65 can be rotated to raise the paper feed guide plate 69 to the position shown in the figure. After rising to the position shown in the figure, if the rotation of the paper feed/discharge roller 37 is stopped, the paper feed guide plate 69 stops at the position shown in the figure. Until the electromagnetic clutch 67 is de-energized, the paper feed guide plate 69 is held by the frictional force of the drive system such as the paper feed/discharge roller shaft.

After that, at the same time as paper is inserted from the paper feed port 64 (detected by a sensor similar to the sensor S in FIG. 1), the electromagnetic clutch 67 is de-energized, and the paper feed/discharge roller 37 is rotated clockwise again. If so, the paper is fed into the main unit in the same manner as in the embodiment described above.

When discharging paper, the paper feed/discharge roller 37 rotates counterclockwise (direction a), so if the electromagnetic clutch 67 is energized again for a certain period of time, the gear 66 also rotates counterclockwise, and the paper feed guide plate 69 also lowers. However, a paper discharge port is formed again in the same manner as in the embodiment described above. If the electromagnetic clutch 67 is de-energized after the paper feed guide plate 69 is completely lowered, the paper output tray 6
Paper on top of 0 is a nuisance (ejected).

(iii) In this embodiment, a recording apparatus that prints by ejecting droplets has been described, but it goes without saying that any printing method may be used.

(iv) In this embodiment as well, it goes without saying that the sheet may be inserted from the right side in FIG. 1, printed, and then discharged from the left side.

(V) The rear end of the sheet material inserted from the left is the sensor S
1, the rotation of the rollers 37, 35 may be stopped immediately. That is, the subsequent starting position of the sheet material to the left is a position where the end of the sheet material is on the leftward side of the recording section 1 (the position shown by (a) in FIG. 4). Alternatively, it may be in the position (C) where the end remains caught by the paper feed/discharge roller 37.

Since the embodiment of the present invention has the configuration described above, it has the following advantages.

(i) By making it possible to use the paper feed port as the paper discharge port for paper after printing, if the paper feed port is placed in front of the device and the operation panel of the main device is also placed on the same surface, All operations related to printing can be performed from the front, making it easy to operate. Furthermore, the space required for operation is small. Also, the entire device can be used while being stored on a shelf, making it possible to save a lot of space.

(ii) Since the pair of rollers involved in conveying paper are configured to feed and eject paper by rotating them forward and backward, there is no need for a dedicated conveyance roller, paper guide, drive system, etc. for paper feeding, making the device easier to use. The configuration can be simplified, making the entire device smaller.
Cost reduction is also possible.

(iii) Since the paper feed port is used as the paper feed port, the paper feed tray and the paper ejection tray can also be used as the paper feed tray, thereby making it possible to downsize the recording apparatus and reduce costs.

[Effects of the Invention] Since the recording device according to the present invention has the configuration as described above,
This has the advantage that the device can be made smaller and is easier to operate.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the embodiment, Figure 2 is a sectional view when the paper feed slot is formed, Figure 3 is a sectional view when paper is set in the paper feed slot, and Figure 4 is a sectional view of the paper. 5 and 6 are sectional views of other embodiments, and 7 and 8 are sectional views of the conventional example. . 1...Print head 34...Paper feed port 35...Sub-scan roller 37...Paper feed/discharge roller 38...Paper detection lever 39...Paper feed guide plate 30... Paper ejection tray 40...paper ejection port

Claims (2)

[Claims] (1) A recording section that forms an image on a sheet material, and a feeding rotary body that rotates in one direction when introducing the sheet material into the recording section and rotates in the other direction when recording on the sheet material. A recording apparatus comprising: means for detecting the introduced sheet material and controlling the rotary body so as to stop the sheet material. (2) Set the sheet guide position at the paper feed/discharge port when feeding paper,
2. The recording apparatus according to claim 1, further comprising a sheet material tray that takes a sheet receiving position when the paper is ejected.