JPH02131967A - Sheet supplying/discharging device for printer - Google Patents

Abstract

PURPOSE:To enlarge an upper space of a printing mechanism without removing a sheet supplying/discharging device from a printer and to facilitate a ribbon cassette replacing work by rotating a stacker to a retreating position when the ribbon cassette is replaced. CONSTITUTION:If a ribbon cassette 7 is replaced with a new one, when stacker 30 is rotated from a slip using position to a retreating position with a shaft piece 32 as a center, the stacker 30 is separated from a printing mechanism P, and the upper space of a cover 9 for the cassette 7 is enlarged. In this state, after the cover 9 is removed from a printer frame 1, the cassette 7 can be easily replaced. After the cassette is replaced, the cover 9 is again mounted in the frame 1, the stacker 30 may be reset and rotated. The cassette 7 can be easily replaced without a complicated work of removing a sheet supplying/ discharging device 21 from the frame 1.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a paper feeding device 1 for a printer.

[Conventional technology]

Conventionally, when printing continuously on multiple sheets of paper,
A paper feeding device equipped with a stacker and a hopper is attached to the printer, and the paper sheets stacked and stored in the hopper are
The paper is automatically supplied to the printing mechanism section of the printer as required, and the cut paper on which printing has been completed is discharged to the stacker and held there.

[Problem to be solved by the invention]

However, in conventional paper feeding and discharging devices, when the hopper is installed, the hopper is located above the rear of the printing mechanism, and
Since the stanoka is arranged above the front part of the printing mechanism, and the stanoka covers the upper part of the printing mechanism,
In addition, since the holder and the printer are fixedly connected, the holder gets in the way when replacing the ribbon cassette installed in the printing mechanism.
¥4 It was necessary to remove the ATL from the printer and release the upper part of the printing mechanism, which was troublesome.

This invention was made in order to solve the above problem, and its purpose is to expand the space above the printing mechanism by fitting the paper feeding device out of the printer when replacing the ribbon case. Therefore, it is an object of the present invention to provide a paper feeding/discharging device for a printer that can easily perform ribbon force center replacement work.

[Means to solve the problem]

In order to achieve the above object, the present invention is provided above the printing mechanism section, and stores cut sheets in a stacked manner.
a frame having a printer capable of sending out the uppermost cut sheet toward the platen; and a frame provided on the frame so as to be rotatable around an axis substantially parallel to the platen, the platen being above the printing mechanism section; A stacker is provided that can be switched between a use position for stacking and accommodating cut sheets ejected from the printer, and a retracted position for separating from the printing mechanism and expanding the space above it.

[Effect]

When feeding and discharging multiple sheets of paper to the printing mechanism, a stanoka is placed in the use position above the printing mechanism, and the stanoka is placed in the use position to feed and eject the sheets of paper sent to the printing mechanism by the action of the holder. After printing is performed in the printing mechanism section, the cut sheets are sequentially discharged from the platen to the stacker. Furthermore, when replacing the ribbon cassette/notebook, the stand socket is moved back to the retracted position, and the space above the printing mechanism section is expanded.

〔Example〕

Hereinafter, one embodiment embodying the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, a platen 2 is rotatably supported on the printer frame 1, and a plurality of paper holding rollers 5 are provided around the outer periphery of the platen 2 to follow the rotation of the platen 2. There is. A printing head 6 is provided on a cartridge (not shown) movable along the platen 2, and a ribbon case 7 storing a printing ribbon movable along the platen 2 is removably attached thereto. Furthermore, a cover 9 is attached to the printer frame 1 so that the opening 8 of the ribbon cassette 7 can be opened and closed.

Further, behind the platen 2, there is disposed a bin tractor 10 that can operate in conjunction with the rotation of the platen 2, and based on the operation of the bin tractor 10, the continuous paper 1l is moved between the platen 2 and the presser roller 5. platen 2.
will be handed over to. Furthermore, a tractor cover 12 that can be opened and closed above the pin tractor 10 is attached to the plink frame 1, and as the tractor cover 12 is rotated, a first
It is arranged to be switched between the closed position shown in the figure and the open position shown in FIG.

In this embodiment, as the platen 2 rotates, the cut paper 3 or the continuous paper 1l is transferred to the printing position facing the gutter 6 by the cooperation of the platen 2 and the press roller 5, and the printing is performed. By operating the head 6 while moving along the platen 2, printing is performed on each paper 3, 11 via the printing ribbon. In this embodiment, the platen 2. The print head 6 and ribbon cassette 7 constitute a print mechanism section P.

A paper feeding device 2l is removably mounted on the upper surface of the printer frame 1 above the printing mechanism section P. That is, the frame 22 of the paper feeding/discharging device 2l consists of a pair of left and right side frames 22A and a front wall plate 22B installed between the left and right side frames. A pair of detachable connecting arms 23 (only one shown) is provided on the side frame 22A of the frame 22 to protrude from both ends of the shaft portion 2a of the platen 2. Possibly connected. Further, a pair of paper guides 23a and 23b are installed between both the connecting arms 23 with a predetermined distance therebetween.

At the bottom of the side frame 22A of the frame 22, there is a leg that can be switched between a storage position located inside the side frame 22A as shown in FIG. 1 and a use position protruding outside the side frame 22A as shown in FIG. Piece 24 is attached.

By normally placing the leg pieces 24 in the storage position, the bottom of the side frame 22A is held in the use position where it abuts against the -F surface of the printer frame 1 on the right and left sides of the cover 12. Further, when loading continuous paper into the bin tractor 10, the frame 22 is rotated clockwise in FIG. A space is formed between the tractor cover 12 and the printer frame 1 for opening and closing the tractor cover 12.

A honoper 25 for accommodating the cut sheets 3 in a stacked state is attached to the frame 22 in an inclined state with its upper surface tilted toward the rear of the printer. Also, on the frame 22, a peeling roller 26 and a pair of feed rollers 27 and 28, which separate the uppermost cut sheet 3 on the flopper 25 from other sheets and send it out toward the platen 2, are rotatable. Supported. When the frame 22 is placed at the end position shown in FIG.
b and paper guide la in printer frame 1 behind it
It is arranged on an extension line of the cut sheet path E1 between the two. Further, a pair of bearing pieces 29 (only one of which is shown) is provided in a circular arc shape around an axis parallel to the axis of the platen 2, at both ends of the front face of the side frame 22A.

A supporter 30 shown in FIG. 1 is attached to the frame 22. The spacer 30 is open on both upper and lower sides and has a box shape that is elongated in a direction parallel to the platen 2. A support section 31 for supporting the lower end of the cut sheet 3 discharged from the platen 2 is provided at the front lower part of the inside of the stacker 30.

A pair of shaft pieces 32 that can fit into each of the bearing pieces 29 and are located on the same axis are protruded from both left and right ends of the stanoka 30. Based on the fitting between each shaft piece 32 and each bearing piece 29, the stacker 30 is moved relative to the frame 22 between the ticket use position shown by the solid line in FIG. 1 and the retracted position shown in FIG. The continuous paper sheet is connected to the continuous paper using position shown by the two-dot chain line in FIG. Retained.

Further, a support piece 33 for supporting the upper part of the cut sheet 31 with the print surface facing the printer frame 1 is provided on the support part 31 in an inclined state with its upper end tilted toward the front of the printer. has been done.

Further, the rear wall of the spacer 30 is formed as a guide wall 35 capable of forming a manual paper path 34 between it and the front wall temporary 22B of the frame 22. The guide pin 3
A feed roller 31j for feeding the cut sheet 3 toward the support piece 33 is provided inside the feed roller 5, and a disposable film 37 for pressing the cut sheet 3 against the feed roller 36 is provided. ing.

As shown in FIG. 4, a gear 38 rotated by a motor (not shown) in conjunction with the peeling roller 26 and feed rollers 27, 28 has a part of its outer periphery exposed from the front surface of the side frame 22A. . A gear 39 connected to the feed roller 36 is also exposed from the rear surface of the star roller 30. When the star roller 30 is in the cut-sheet use position shown by the solid line in FIG. 1, both gears 38
．． 39 can mesh with each other to rotate the feed roller 36. Further, when the gears 38 and 39 are in the position shown by the two-dot chain line and the retracted position shown in FIG. 3, the gears 38 and 39 are disengaged.

Now, in the printer configured as described above, when printing on the cut sheet 3, the paper feeding device 21
While placing the frame 22 in the mounting position shown in FIG. 1,
The stacker 30 is placed at the cut use position shown by the solid line in the figure. In this state, the lower part of the stanoka 30 is attached to the paper guide 2.
3a and held in the cut sheet use position,
A pair of feed rollers 27, 28 are paper guides 23b, la.
It is arranged on an extension line of the cut sheet path E1 between the two.

Further, the bottom opening of the stator case 30 is arranged opposite to the paper discharge side of the platen 2 via the front surface of the paper guide 23a.

In the above condition! ．． 11 separation roller 26 and feeding port roller 2
7. When the sheet 28 is rotated, the sheets 3 stored in advance in a stack in the hopper 25 are sent out toward the platen 2 along the sheet guides 23b and Ia in order from the top sheet. Then, the cut sheet 3 that has been printed based on the operation of the printing mechanism section P is transferred to the stacker 3 as the platen 2 rotates.
0, passing between the guide wall 35 and the support section 31 and introduced between the feed roller 36 and the flexible film 37. As the feed roller 36 rotates, the cut sheets 3 are stacked on the support portion 31 and support piece 33 of the stacker 30.

Further, in the above state, a cut sheet can be manually inserted into the paper path 34 between the front wall plate 22B of the frame 22 and the guide wall 35 of the stator case 30. In this case, the motor and power transmission mechanism in the supply/discharge device 2l are connected to the peeling roller 26.
It is possible to switch to rotating the feed port 36 without rotating the feed port 36. The cut sheet inserted into the paper path 34 passes through the paper guides 23a and 23b, and as the platen 2 rotates,
It is transferred to the stacker 30 in the same manner as described above.

On the other hand, when printing on the continuous paper l1, first move the frame 22 eight times in the clockwise direction in FIG. Separate. Then, the leg piece 24 is projected from the storage position shown in FIG. 1 to the use position shown in FIG. 2 by the biasing force of a spring (not shown). When the leg pieces 24 are engaged with the upper surface of the printer frame 1 on both the left and right outer sides of the cover 12, the frame 22 is held in the position shown in FIG. 2, and the space above the tractor cover 12 is expanded. . At this time, the lower surface of the supporter 30 collides with a part of the cover 9, but the supporter 3α rotates around the shaft piece 32 and escapes, so no damage occurs.

Therefore, if the tractor cover 12 is rotated from the closed position shown in FIG. 1 to the open position shown in FIG.
is exposed, and the continuous paper 11 can be easily loaded onto the bin tractor 10. Next, the cover 12
is returned to the closed position, and the leg piece 24 is pressed from behind to retreat into the frame 22, and then the frame 22 is returned to the mounting position shown in FIG. Furthermore, the stacker 30
is rotated and held by a locking means (not shown) at the continuous paper use position shown by the two-dot chain line in FIG.

Then, the space between the guide wall 35 of the stylus 30 and the front surface of the frame 22 is expanded, and a continuous paper path E2 is formed that is connected to the discharge side of the platen 2 via the front surface of the paper guide 23a.

When the bin tractor 10 is operated in the above state, the continuous paper 11 is multi-fed toward the platen 22, and when the printing mechanism P is operated in synchronization with the bin tractor 10, the continuous paper 11 is Printing is performed on l1. Then, as the platen 2 rotates, the printed continuous paper 11 moves through the path E2 between the guide wall 35 and the front surface of the frame 22.
After being introduced into the printer frame 1, the printer frame 22 is introduced over the top end of the frame 22 and transferred to the rear of the printer frame 1. Therefore, in this case, the upper part of the gutter 6 for printing in the printing mechanism section P by the continuous paper ■1 is +! ! There is no M, and the printed portion can be easily seen.

Further, in this embodiment, since the path E1 for the cut sheet 3 and the path E2 for the continuous sheet 11 are formed separately, the path E1 for the cut sheet 3 and the path E2 for the continuous sheet 11 are formed separately.
1 is never introduced between the flexible film 37 and the feed roller 36 in the cut paper path E1. Therefore, when the continuous paper 11 is being fed, there is no fear that the perforation cut line will be caught on the film 37 and its feeding will be hindered.

Furthermore, in this embodiment, when replacing the ribbon case 7 with a new one, the stub case 30 is moved recessed around the shaft piece 32 from the cut sheet use position shown in FIG. 1 to the retracted position shown in FIG. 3. , the spacer 30 is separated from the printing mechanism section P, and the space above the cover 9 for the ribbon cassette 7 is expanded. In this state, after removing the cover 9 from the printer frame 1, the ribbon force center 7 can be easily replaced. After summoning the ribbon case, cover 9
After reinstalling the printer frame L, the stacker 30
All you have to do is rotate it back.

As described above, in this embodiment, the ribbon case 7 can be easily replaced without the troublesome task of removing the paper feed/discharge device 21 from the printer frame 1.

Note that the present invention is not limited to the above-mentioned embodiments, and the attachment/detachment opening 8 for the ribbon cassette 7 may be provided with a cover that opens and closes the attachment/detachment opening 8 by a rotation operation, and the mounting positions of the bearing piece 29 and the shaft piece 32 may be changed. It is also possible to reverse the above embodiment.

〔Effect of the invention〕

As described in detail above, the present invention makes it possible to expand the space above the printing mechanism section without removing the paper feeding device from the printer when the ribbon power is insufficient, thereby facilitating the task of replacing the ribbon cassette. It has the excellent effect of being able to

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment embodying this invention;
FIG. 2 is a sectional view of the paper feeding device when continuous paper is used, FIG. 3 is a sectional view of the paper feeding and discharging device when replacing the ribbon cassette, and FIG. 4 is a partial side view. 2... Platen, 3... Cut paper, 6... Print head, 7... Ribbon cassette, 11... Continuous paper,
22...Frame, 25...Honover 30...
Stunker, P... Printing mechanism section.

Claims (1)

[Scope of Claims] 1. A platen (2) supporting printing paper (3, 11), and a print head (2) movable along the platen (2).
6) and a ribbon cassette (7) that stores a print ribbon that can run along the platen (2), and prints via the print ribbon based on the operation of the print head (6). In a printer equipped with a section (P), a printer is provided above the printing mechanism section (P), and a cut sheet (3
) is stacked and accommodated, and a hopper (25) capable of feeding the top sheet (3) toward the platen (2).
a frame (22) having a frame (22); a frame (22) provided on the frame (22) so as to be rotatable around an axis substantially parallel to the platen (2);
Switching between a use position where cut sheets (3) discharged from the platen (2) are stacked and stored above the printing mechanism (P) and a retreat position where the printing mechanism section (P) is separated and the space above it is expanded. 1. A paper feeding device for a printer, characterized in that it is provided with a paper stacker (30).