JP2576004Y2 - Printer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer for printing on paper by a recording head.

[0002]

2. Description of the Related Art Conventionally, for example, a recording head is mounted on a carriage block, and the carriage block is rotatably supported by a printer main body to facilitate operability of attaching and detaching a paper or an ink ribbon as shown in FIG. Printers are known. In this printer, a horizontal (or vertical) transport path 1 is provided, and a paper carry-in port 2 provided at one end (right side in the figure) and a paper carry-out port provided at the other end (left side in the figure) are provided. 3, the paper is conveyed horizontally. A recording head 5 and a platen 6 that are vertically opposed to each other through a gap 4 through which a sheet passes are provided at a substantially central portion of the transport path 1. A plurality of transport rollers 7 that rotate in close contact are provided.

A recording head 5 and a transport roller 7 above the transport path 1 are supported between frames 9 on both sides of a carriage block 8.
Can rotate upward about a rotation shaft 10 provided at a position above the paper outlet 3 of the transport path 1.

When a sheet is left in the conveyance path 1 during conveyance or the like, the carriage block 8 supporting the recording head 5 and the upper conveyance roller 7 is rotated by a rotating shaft 10.
The recording head 5 is rotated upward about the
The transport path 1 at a position facing the paper is partially released so that the paper can be removed.

[0005]

However, in the above-mentioned conventional structure, the rotation shaft 10 of the carriage block 8 is not provided.
And the recording head 5 are provided close to each other, so that the opening dimension of the conveyance path 1 near the recording head 5 where the paper jam and the like are likely to occur cannot be increased with respect to the rotation angle of the carriage block 8. have.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a printer which has good operability and can easily eliminate paper on a conveyance path.

[0007]

According to a first aspect of the present invention, there is provided a printer having a carriage block having a substantially fan-shaped cross section to which a recording head is attached, and a front lower end corner of the carriage block.
A printer main body provided with a rotation support portion that rotatably supports the vicinity , and a transport path formed along a joining portion between the printer main body and the carriage block, the printer main body being operated. A paper inlet provided on the front side, which is the user side, and a paper outlet provided on the upper side,
The conveyance path is an arc of the carriage block having a substantially fan-shaped cross section.
Along Jo unit communicates with curved with the paper carry-in port and the sheet discharge port, the pivot support portion is provided near the sheet entrance of the front side of the front Symbol printer, the recording head is pre-Symbol It is attached near the paper exit at the top of the carriage block.

According to a second aspect of the present invention, there is provided a printer provided at a rear portion of the printer main body to supply a continuous sheet, and a second transport path communicating the second paper transport port with the transport path. Is provided.

[0009]

In the printer according to the first aspect of the present invention, the paper path is curved, and the paper inlet provided at the front side of the printer body and the paper outlet provided at the upper part of the printer body communicate with each other. And the operability is improved. Also, since the recording head is mounted near the paper exit at the top of the carriage block, immediately after being recorded on the paper, the recorded portion is discharged toward the near side,
Confirmation of the recording state is quick and easy. In addition, carry
The carriage block has a generally fan-shaped cross-section, and a recording head is mounted near the paper exit at the top of the carriage block.
Since the rotation support portion serving as a fulcrum to support is provided near the paper entrance on the front side of the printer main body, the distance between the rotation support portion and the recording head is large, and the carriage block is rotated to the front side on the operator side. By moving the carriage
The transport path near the recording head is largely opened to the operator side with respect to the rotation angle of the carriage block without rotating the cartridge greatly, thereby facilitating the removal of the paper.

[0010] In the printer according to the second aspect, the continuous paper conveyed from the second paper entrance provided at the rear of the printer main body is conveyed to the conveyance path via the second conveyance path.
Recording is performed using a recording head. Different types of paper can be carried in from two paper carry-in entrances. Regarding the continuous paper loaded from the second paper loading port, the carriage block is rotated to the front side, which is the operator side, so that the transport path near the recording head is largely opened to the operator side, and the paper is eliminated. It will be easier.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a printer according to an embodiment of the present invention;

1 and 2, reference numeral 20 denotes a printer main body. The printer main body 20 is configured by connecting a pair of main frames 21 arranged on both sides in a state of facing each other. In the vicinity of the lower end of the front side (left side in the figure), which is the operator side, between the main frames 21, a cut paper carry-in port 22 is provided as a paper carry-in port, and at the substantially central portion of the upper part. A paper exit 23 is provided between the cut paper entrance 22 and the paper exit 23 as a transport path curved upward to form an arc having a center of rotation on the front side. One transfer path 25 is formed.

Between the main frames 21, a main roller 26 and a plurality of lower transport rollers 27 are rotatable forward and backward along a lower transport surface 25a which is a joining portion of the first transport path 25. A platen 31 is mounted in the vicinity of the paper discharge port 23 so as to face the first transport path 25, and a pair of transport rollers 32a and 32b are provided above the platen 31. Have been.

On the rear side of the main frame 21, a tractor mounting base 33 is formed.
A pair of tractor sets 34 on both sides for supplying continuous paper to 33 are mounted. A continuous paper carry-in port 35 as a second paper carry-in port is provided in the printer body 20 so as to be continuous with the upper surface of the tractor set 34. A second transport path 36 is provided along the lower side to communicate with the first transport path 25 below the platen 31. A paper pan 37 and a continuous paper transport roller 38 are provided along the lower surface of the second transport path 36.

In the vicinity of the cut-sheet carry-in port 22 at the lower front side of the main frame 21, a rotation shaft constituting a rotation support portion is provided.
41 is fixed, and a lock mechanism pin 42 is fixed near the platen 31.

Reference numeral 44 denotes a carriage block. The carriage block 44 is arranged on both sides and is constituted by connecting a pair of carrier frames 45 in a state of facing each other.
On the rear surface side of the carriage block 44, an upper transfer surface 25b serving as a curved bonding portion facing a lower transfer surface 25a serving as a bonding portion of the main frame 21 with a gap therebetween.
The main roller 26 and the lower transport roller of the main frame 21 are provided along the upper transport surface 25b.
Multiple upper transport rollers that rotate in close contact with 27
47 are supported.

A carrier (not shown) is provided above the carriage block 44. A recording head 51 and a ribbon cassette 53 are mounted on the carrier so as to be reciprocally movable in the width direction of the paper. 51
Has a dot element in which a plurality of dot pins are arranged side by side so as to constitute a dot matrix printer.
The platen 31 is positioned so as to face the platen 31 attached to the plate 21 with a slight gap 55 therebetween.

At the lower end of the front side of the carrier frame 45, there is provided a bearing portion 56 which constitutes a rotary support portion cut out in a substantially U-shape.
The carriage block 44 is rotatably mounted on the front side of the main frame 21 by being fitted to the rotating shaft 41 of the 21.

Further, a lock mechanism hook 58 is rotatably provided near the upper end of the carriage block 44.
2, the lock mechanism hook 58 is connected to the lock mechanism pin 42 of the main frame 21.
The platen 31 and the recording head 51 face each other with a slight gap 55 therebetween, and the upper transport roller 47 and the lower transport roller 27 are rotated in close contact with each other. Thus, the carriage block 44 is fixed and held at a predetermined position.

Although not shown, a stopper is provided in the vicinity of the rotation shaft 41 of the main frame 21 so that the carriage block 44 does not rotate, for example, by more than 45 degrees from the fixed position as shown in FIG. It has become.

Next, the operation of the printer of this embodiment will be described.

First, when printing is performed using cut paper, the carriage block 44 is closed and the state shown in FIG.
Cut paper is inserted into the first transport path 25 from the front cut paper entrance 22. When the paper feed switch is turned on in this state, the motor is driven based on a command signal of a drive control unit controlled by a CPU (not shown), and the upper and lower transport rollers 27 and 47 and the main roller are driven via the rotation shaft of the motor and the transmission mechanism. 26 and the like, and the cut sheet is conveyed, and the cut sheet is conveyed to the gap 55 between the platen 31 and the recording head 51, and the recording head 51 is rotated based on a print command signal from the print control unit. Each dot element is output while reciprocating while being guided by the carrier, and printing is performed by the recording surface portion 54 of the recording head 51. The cut sheet printed in this way is conveyed by the rollers 26, 27, 47 and the conveying rollers 32a, 32b, and is discharged vertically from the paper outlet 23.

When printing is performed using continuous paper, the paper feed switch is turned on while continuous paper is set in the tractor set 34 on the rear side, so that the tractor set based on a command signal from the drive control unit is turned on. 34 operates to supply the continuous paper from the continuous paper entrance 35 to the second transport path 36. The continuous paper is transported by the main roller 26 and the continuous paper transport roller 38 while being guided by the paper pan 37, and is transported to the gap 55 of the first transport path 25. Then, similarly to the case of the cut sheet, the recording surface portion of the recording head 51 is used.
It is printed by 54 and discharged from the paper exit 23.

If, for some reason, paper such as cut paper or continuous paper is caught in the first transport path 25 and left behind (paper jam state).
In a state in which the lock mechanism hook 58 of the carriage block 44 is rotated and removed from the lock mechanism pin 42 of the main frame 21, the carriage block 44 shown in FIG.
The platen 31 and the recording head
The first transport path 25 between the upper transport surface 51b and the upper transport surface 25b and the lower transport surface 25a is expanded and released to remove paper and the like.

According to the printer of the present embodiment, when a sheet is left inside the first transport path 25, the lock mechanism hook 58 is rotated to remove it from the lock mechanism pin 42, Only by rotating the carriage block 44 to the front side, the first transport path 25 between the platen 31 and the recording head 51 and between the upper transport surface 25b and the lower transport surface 25a can be largely released. Can be easily eliminated.

In particular, a bearing 56 serving as a fulcrum of rotation of the carriage block 44 is provided near the front end and the lower end of the carriage block 44, and the recording head 51 is located above the carriage block 44, that is, near the paper outlet 23. The gap 55 between the platen 31 and the recording head 51, which has a narrow width and is likely to cause a paper jam, can be largely separated with respect to the rotation angle of the carriage block 44. Can be easier.

Further, since the carriage block 44 is rotated to the front side, which is the operator side, and the first transport path 25 is opened, it is easy for the operator to remove sheets.

Further, in the printer according to the present embodiment, the cut sheet or the like is discharged vertically to the operator immediately after printing, so that the operator can quickly and easily observe the recording state of the sheet. be able to.

The engagement position of the lock mechanism section pin 42 or the lock mechanism section hook 58 is provided in two stages, and the carriage block 44 is slightly rotated at the time of normal paper jam or the like.
It can also be made to pivot greatly during maintenance and the like.

Although the recording head 51 of the printer in the above embodiment has been described as an impact printer using dot pins, the present invention is similarly applied to a thermal printer using a thermal head or another printer without being limited to an impact printer. You can do it.

[0031]

According to the first aspect of the present invention, the paper path is curved, and the paper carrying port provided at the front side of the printer body and the paper carrying port provided at the upper part of the printer body communicate with each other. The removed paper is taken out from the upper part, and the operability of the paper can be improved. In addition, since the recording head is mounted near the paper exit above the carriage block, immediately after being recorded on the paper, the recorded portion is discharged toward the near side, and the recording state can be quickly and easily checked. Further, the carriage block has a substantially fan-shaped cross section.
A recording head is mounted near the paper exit above the carriage block.
Since the rotation support portion serving as a fulcrum for supporting the vicinity of the corner at the front lower end of the printer is provided near the paper carry-in port on the front side of the printer main body, the distance between the rotation support portion and the recording head can be increased, and the carriage block can be enlarged. By rotating the carriage block to the front side, which is the operator side, the carriage block can be largely rotated.
The transport path near the recording head can be largely released to the operator side with respect to the rotation angle of the carriage block . Therefore, it is possible to easily remove the paper in the vicinity of the recording head where a paper jam is likely to occur.

According to the printer of the second aspect, different types of paper can be carried in from two paper carrying entrances, and workability can be improved. Regarding the continuous paper loaded from the second paper loading port, the carriage block is rotated to the front side, which is the operator side, so that the transport path near the recording head can be largely released to the operator side, and the paper can be easily removed. Can be eliminated.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a state in which a carriage block of a printer according to an embodiment of the present invention is rotated.

FIG. 2 is a sectional view showing a normal state of the printer.

FIG. 3 is a sectional view showing a conventional printer.

[Explanation of symbols]

 20 Printer main body 22 Cut-sheet carry-in port as paper carry-in port 23 Paper carry-out port 25 First transport path as a transport path 25a Lower transport surface as a junction 25b Upper transport surface as a junction 35 Second Continuous paper carry-in port as a paper carry-in port 36 Second transport path 41 Rotary shaft constituting a rotary support portion 44 Carriage block 51 Recording head 56 Bearing portion constituting a rotary support portion

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B41J 29/00 B41J 25/312 B41J 25/316 B41J 29/54

Claims (2)

(57) [Scope of request for utility model registration] A carriage block having a substantially fan-shaped cross section to which a recording head is attached; and a printer main body having a rotation support portion rotatably supporting a vicinity of a corner at a lower front end of the carriage block. A conveyance path formed along a joint portion between the printer body and the carriage block facing each other, wherein the printer body is provided at a paper carry-in port provided at a front side which is an operator side and at an upper portion. A paper exit, and the transport path is an arc of the carriage block having a substantially fan-shaped cross section.
Along Jo unit communicates with curved with the paper carry-in port and the sheet discharge port, the pivot support portion is provided near the sheet entrance of the front side of the front Symbol printer, the recording head is pre-Symbol A printer mounted near an upper portion of a carriage block near the paper exit. 2. A printer according to claim 1, further comprising: a second paper inlet provided at a rear portion of the printer main body for supplying continuous paper; and a second transport path communicating the second paper inlet and the transport path. The printer according to claim 1, wherein: