JPH0322824B2 - - Google Patents

Description

[Detailed description of the invention] Technical field of invention The present invention relates to a printing device.

Technical Background of the Invention and Problems Therewith In order to simplify tasks such as setting paper in a printing device and improve space efficiency, it is conceivable to form a paper insertion port and a paper discharge port adjacent to each other. However, if the paper insertion port and the paper discharge port are placed adjacent to each other in this manner, it is expected that the portion into which the paper is inserted and the portion from which the paper is discharged overlap. In this state, the conveying resistance increases because the advancing direction of the inserted part of the paper is opposite to the advancing direction of the ejected part.
Smooth conveyance of paper is hindered.

In addition, in recent years, with the spread of office automation equipment, printing devices are often placed on the same desk together with other output devices and input devices such as displays and floppy disks, but conventional printing devices have a large base area. It requires an extremely large amount of space to be installed together with other input/output equipment. Furthermore, since the printing device is flat and has a large base area, it is difficult to hold it with one hand when changing the layout or transporting it, making it difficult to handle.

Purpose of the Invention The present invention has been made in view of the above points, and an object of the present invention is to provide a printing device that can smoothly convey paper, significantly reduce floor space, and facilitate transportation. It is.

SUMMARY OF THE INVENTION This invention forms a paper insertion port and a paper discharge port in the upper part of a vertical casing, and the length of the paper insertion port in the longitudinal direction is greater than the length of the paper insertion port in the longitudinal direction. By attaching a U-shaped handle with a longer length between the handles and guiding the paper inserted from the insertion port through the handle and ejected from the ejection port onto the handle, the paper can be moved in opposite directions. The structure is configured to prevent the paper insertion part and the paper ejection part from overlapping each other so that the paper can be conveyed smoothly. A print cover is placed on the top of the side and covers the paper feed section and platen, and is removably attached to the top of the front of the housing, making it easy to set paper and replace the print ribbon. The power supply block, which is the heaviest item, was placed at the bottom by utilizing the dead space on the back side of the case, keeping the center of gravity at the bottom and maintaining the stability of the vertical case.

In addition, "the length in the longitudinal direction of the insertion port" is
It does not simply refer to the length of the insertion opening formed on the surface of the casing, but refers to the length that regulates the positions of both ends of the paper inserted into the insertion opening. In other words, it is the length that determines the maximum width of paper that can be inserted.

Embodiment of the Invention An embodiment of the invention will be described based on the drawings.
1 is a housing. This case 1 is the front case 2
and the rear case 3 are combined. A carrier cover 6 of a printer cover 5 is detachably attached to the front side of the housing 1, and covers the opening 4 of the front case 2 except for a part of the upper part.
The PC board cover 7 is secured with screws. Note that a portion of the opening 4 covered by the printer cover 5 that is partially exposed serves as a discharge port. Further, a horizontally elongated insertion opening 8 is formed at the upper edge of the joint between the front case 2 and the rear case 3. Such a casing 1 has a height larger than a depth, a bottom surface area smaller than a front surface area, and legs 9 are attached to the four corners of the bottom surface. Furthermore, recesses 10 are formed in the upper part of the rear case 3, and the arm parts 1 on both sides of the handle 11 are inserted into these recesses 10.
2 is rotatably attached. Here, the length between the opposing surfaces of the two connecting portions of the handle 11 to the housing 1 is longer than the length of the insertion port 8 in the longitudinal direction. Note that the term "length in the longitudinal direction of the insertion opening 8" as used herein means a length that restricts the positions of both ends of the paper 28 inserted into the insertion opening 8. That is, it is the length that determines the maximum width of the paper 28 that can be inserted.

Next, on the front side of the housing 1, there are provided a sprocket 13 which is a paper feeding part, a platen 14, and a carrier 17 which holds a dot printer head 15 which is a printing part and a ribbon cassette 16 which are opposed to each other below the platen 14. A power supply block 18 equipped with a transformer is installed on the lower right side of the rear side of the housing 1, using the dead space on the back side of the carrier 17.
is fixed, and furthermore, a PC board 19 is attached to the back side of the housing 1. A paper feed motor 20 that drives the sprocket 13 is attached to the upper left side of the middle part in the depth direction of the housing 1.
A carrier motor 21 for reciprocating the carrier 17 is attached to the right side of the intermediate portion in the depth direction and height direction.

Further, the electronic circuit element mounting surface 2 of the PC board 19
2 faces an opening 23 on the back surface of the housing 1, and a connector 24 and screw seats 25, which are a plurality of mounting parts, are mounted on this electronic circuit element mounting surface 22. A connector 27 connected to the connector 24 is attached to an optional sub-PC board 26 that is selectively screwed into these screw seats 25.

In this configuration, the print cover 5 is removed, the paper 28 inserted through the insertion opening 8 is passed through the lower surface of the platen 14, and wound around the sprocket 13, the print cover 5 is closed, and one end of the paper 28 is inserted from the upper edge of the opening 4. bring it out. Then, the rotation of the paper feed motor 20 is controlled by sprocket 1.
3, the paper 28 is intermittently fed in the row direction, and printing is performed while the carrier 17 is reciprocated along the platen 14 by the carrier motor 21. At this time, since the housing 1 is vertical, the floor space is extremely small, and even when placed on a desk together with other input/output devices, only a small amount of space is required.

Here, as shown in FIG. 4, the paper 28 inserted into the insertion port 8 is passed under the handle 11 erected from the back of the housing 1. Then, the paper 28 led out from the upper edge of the opening 4 passes over the handle 11 and is returned toward the back of the housing 1. Therefore, the inserted portion and the ejected portion of the paper 28, which advance in opposite directions, do not overlap, and the smooth advancement of the paper 28 is maintained. Moreover, the printed paper 28 guided out from the upper edge of the opening 4 is guided from above the handle 11 to the rear side with the printed surface facing the front. Therefore, it becomes easy to confirm the printed content from the operator's position.

Since the sprocket 13, platen 14, and carrier 17 are arranged on the front side of the housing 1, it is easy to set the paper 28 and replace the ribbon cassette 16. Although the housing 1 is vertical, the power supply block 18, which is the heaviest item, is placed at the lower part of the back side, so the housing 1 is stable and will not fall over even when the print cover 5 and carrier cover 6 are removed. In addition, by removing the PC board cover 7, you can inspect the PC board 19 and remove the screw seats 2 as necessary.
Attach the sub PC board 26 to 5, and connect the connectors 24, 2
7 allows circuit connection between the sub PC board 26 and the PC board 19.

In addition, the housing 1 is vertical and has a handle on the top.
1, so it can be held with one hand.

Effects of the Invention Since the present invention is constructed as described above, by guiding the paper that has been inserted from the insertion port through the handle under the handle and discharged from the discharge port onto the handle, the traveling directions of the paper are opposite to each other. The paper can be transported smoothly by preventing the insertion part and the ejection part from overlapping, and the printed content can be easily confirmed from the operator's position.
In addition, the housing can be installed and printed in a small space, and the paper feed section, platen, and carrier are placed on the front side of the housing, making it easier to load paper and ribbon. By installing a heavy power supply block at the bottom of the rear side of the case, you can prevent the case from falling even when removing the print cover.Furthermore, by providing a handle on the top of the case, you can easily open the case with one hand. Furthermore, by removing the PC board cover, maintenance of the PC board and installation of an optional sub-PC board can be easily performed.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention.
The figure is a perspective view, the second figure is a front view, the third figure is a rear view,
FIG. 4 is a right side view, and FIG. 5 is an exploded perspective view showing how the sub-PC board is attached. 1... Housing, 5... Print cover, 7...
PC board cover, 9... Legs, 11... Handle, 1
3... Sprocket (paper feeding section), 14... Platen, 15... Dot printer head (printing section),
17...Carrier, 18...Power block, 19
...PC board, 20...Paper feed motor,
21...Carrier motor, 25...Screw seat (mounting part), 26...Sub PC board.

Claims (1)

[Claims] 1. A vertical casing with a height larger than the depth and a bottom area with legs attached smaller than the front area is provided, and a power supply block is placed at the bottom of the back side of this casing and connected to the paper feed motor. A paper feeding unit and a platen are arranged at the upper front side of the housing, and a print cover covering the paper feeding unit and the platen is removably attached to the upper front side of the housing. A paper insertion port and a paper discharge port connected to the paper feeding section are formed in the upper part, and the length between the opposing surfaces of the two connecting parts to the housing is longer than the length of the paper insertion port in the longitudinal direction. A printing device characterized by having a long U-shaped handle attached to the top of its housing.