JP2001171203A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accelerate drying of waste ink stored in an waste liquid tank through suction flow for discharging a sheet by employing a highly rigid frame structure as a printer body and utilizing a box space defined by the frame structure as a passage of suction flow for discharging sheet. SOLUTION: A frame structure having upper and lower box spaces A, B is employed as the printer body and a main frame 12 is formed by bending a back part 12a, a part 12b for sectioning the box space vertically and a front part 12c into crank-shape in side view. An waste ink tank 60 and a fan 70 for sucking a print sheet to a sheet carrying face are disposed in the lower box space B serving as an air duct.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer and a so-called large-size printer capable of printing on printing paper having a width of about A1 size or B1 size. The present invention relates to a printer having a structure, in which a waste liquid tank is provided in a lower box space, an exhaust suction flow for sucking discharged paper is formed in the space, and the waste ink stored in the waste liquid tank is dried.

[0002]

2. Description of the Related Art In a large-sized printer, a paper feeding section is arranged at an upper rear portion of a printer body, and printing paper is fed from the paper feeding section to a printing section through an oblique paper transport path toward a front portion of the printer. 2. Description of the Related Art In many cases, a sheet is discharged obliquely downward from a sheet discharge section after printing, and is received by a sheet discharge receiving device provided below the printer. This type of large printer generally has a frame structure in order to increase the rigidity of the printer body having a large width, and a box space is formed inside. The box space is used as a place for incorporating a control device, a paper discharge suction device, a waste liquid treatment device, and the like.

[0003]

In the frame structure of the conventional printer body, if the weight balance of a large printer becomes uneven in the width direction, the frame structure is likely to be twisted. The torsion of the frame structure degrades the accuracy of the mechanism, and as a result, there is a problem such as a decrease in print quality. An object of the present invention is to make a printer main body a frame structure having high rigidity, and use a box space created by the frame structure as a ventilation path of a paper discharge suction flow, and the printer body is stored in a waste liquid tank by the paper discharge suction flow. An object of the present invention is to provide a printer that promotes drying of waste ink.

[0004]

According to the first aspect of the present invention, there is provided a printer for printing on a printing paper fed from above and discharging the printing paper downward, wherein a frame structure having a box space formed therein is provided. A printer main body having a, a waste liquid tank provided inside the frame structure and opened to the box space inside the waste liquid storage tank for storing waste ink, and a paper suction device for suction holding print paper to be discharged, The paper suction device is
A discharge suction fan provided in the frame structure is provided, and an exhaust suction flow is formed by utilizing a box space inside the frame structure. According to the first aspect of the present invention, the printer body is constituted by the frame structure forming the box space, so that the torsional rigidity in the width direction of the printer is enhanced, and the waste ink in the waste liquid tank is discharged by the exhaust suction flow flowing through the box space. Drying is promoted, and the exhaust suction flow can be effectively used. A device for drying the waste ink is not required, the configuration is simplified, and the cost can be reduced.

According to a second aspect of the present invention, in the first aspect, the frame structure comprises a lower frame structure and an upper frame structure, and at least the lower frame structure has a waste liquid tank and a discharge suction fan. It is characterized by being provided. According to the second aspect of the present invention, the rigidity of the printer main body can be further increased by forming the frame structure into two upper and lower stages.

According to a third aspect of the present invention, in the second aspect of the present invention, the frame structure includes a side frame, a base frame forming a bottom portion of the printer main body, a main frame, and a lower end provided on a back side of the main frame. A rear frame having a rear frame upper portion bent from the rear frame rear portion to be coupled to the front portion of the printer main body, the main frame having a lower end coupled to the base frame; A main frame rear part forming a part, a main frame partition part bent from the main frame rear part to partition upper and lower box spaces, and a main frame forming a front side of a printer main body from a print head to a paper feed part Characterized in that it is configured in a side-view crank shape with a front part bent. . According to the third aspect of the present invention, the member that defines the upper and lower box spaces and the member that forms the upper part of the printer main body are constituted by a crank-shaped main frame when viewed from the side and an inverted L-shaped rear frame when viewed from the side. The number of parts is reduced, the number of assembling steps is reduced, and higher rigidity is obtained.

According to a fourth aspect of the present invention, in the third aspect of the present invention, a paper guide plate is disposed on the front side of the upper fox space defined by the main frame partition, and the front side of the lower box space. Is covered by a sheet discharge guide plate having a suction port. According to the fourth aspect of the present invention, it is necessary to close the box space to generate a strong exhaust suction flow in the lower box space, but the structure is simplified by closing the front open portion of the box space by using the paper discharge guide plate. Be transformed into

According to a fifth aspect of the present invention, in the first aspect of the present invention, a hood is provided at a discharge port of the discharge suction fan. According to the fifth aspect of the present invention, when a discharge suction fan having a large displacement is used to generate a uniform paper suction force in the width direction on the sheet conveyance surface of the discharge guide plate,
Although the noise level increases in accordance with the volume of the exhaust noise, the noise level does not increase and the noise is reduced by providing the hood so as to surround the discharge port.

[0009]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a printer according to the present invention, FIG. 2 is a front view of a printer main body in the printer according to the present invention, and FIG. 3 is a sectional view taken along line II of FIG.

The printer 1 is configured to be capable of printing up to A1 or B1 size printing paper, and includes a printer main body in which a paper feeding unit 2, a printing unit 3 and a paper discharging unit 4 are incorporated.
A leg device 5 and a paper discharge receiving device 6 are provided. Paper feed unit 2
A roll paper (printing paper) 21 is set inside the printer 1 so as to protrude from the rear upper part of the printer 1, and a roll paper cover 2 is provided so as to cover the roll paper 21.
2 is attached to open and close freely.

The printing unit 3 includes a carriage 32, a print head 33 mounted on the carriage 32, a paper feed roller 34 and a driven roller 35 for transporting the print paper in the sub-scanning direction, an ink supply device for the print head 33, a print paper The apparatus is provided with a paper suction device for preventing floating, a control device for executing printing, and the like, and performs printing while transporting the printing paper fed from the paper feeding unit 2 in the sub-scanning direction. An ink cartridge case 30 is arranged on the front surface of the printing unit 2, and houses an ink cartridge 31 that stores ink to be supplied to the print head 33.

The printing paper printed by the printing unit 3 is discharged via the paper discharging unit 4 obliquely downward and forward of the printer 1. A cutter (not shown) for cutting the roll paper 21 is provided between the printing unit 3 and the paper discharging unit 4.
After the printing is completed, the printing paper is cut by the cutter and received by the paper discharge receiving device 6. The leg device 5 includes support legs 50 for supporting the printer 1 and legs 51 provided on the base frame 11 of the printer main body for using the printer 1 mounted on a table. Inside the support leg 50, a paper discharge receiving device 6 that receives the print paper discharged from the paper discharge unit 4 is arranged.

The printer body comprises a base frame 11, a main frame 12, and a rear frame 13 as shown in FIG.
And a box structure forming an internal space by both side frames 14. Main frame 12
The main frame rear part 12a whose lower end is joined to the base frame 11 constituting the bottom part, the main frame partition part 12b which partitions the inside up and down from the main frame rear part 12a, and the main frame partition part 12b to the sheet feeding part 2 The main frame front portion 12c inclined toward the main frame is formed into a crank shape in side view by bending.

Above the main frame 12, a paper feed unit 2 is provided.
Rear frame upper part 1 of rear frame 13 separating between
3a is arranged, and a frame end of the upper portion 13a of the rear frame is connected to an upper end of the front portion 12c of the main frame. The rear frame 13 is formed by bending an upper portion 13 a of the rear frame and a rear portion 13 b of the rear frame into an inverted L shape when viewed from the side, and a lower end of the rear portion 13 b of the rear frame is connected to the rear side of the main frame 12.

The main frame partition 12b extends obliquely upward to the front of the printer body, and its end reaches the plate 18. The front side of the printer body including the front of the main frame is inclined from the paper feed unit 2 to the paper discharge unit 4. The plate 18 is formed to have a concave shape with respect to the sheet transport surface, and both ends thereof are
It is fixed to. The plate 18 includes a print head 33.
A platen 36 is provided to face the camera.

The box space surrounded by each of the frames 11 to 14 has a two-stage structure of a box space A and a box space B at the top and bottom.
A paper guide plate 15 for guiding the printing paper fed from the printer to the printing unit 3 is arranged. Further, an open portion of the box space B is closed by a paper discharge guide plate 16.
The box space A is composed of an upper frame structure composed of a main frame partition part 12b, a main frame front part 12c, a rear frame 13, and a side frame 14, and incorporates a control board 37 constituting a control device. On the other hand, the box space B includes the base frame 11, the main frame rear portion 12a, and the main frame partitioning portion 1.
2b, a lower frame structure composed of a side frame 14 incorporates a waste liquid tank 60 and a paper discharge suction fan 70 forming a paper suction device.

The waste liquid tank 60 has an upper portion opened to a box space B, and a waste ink absorbing material 6 is provided in the tank.
1 is stored, and waste ink sent from the carriage 32 is impregnated and stored in the absorbing material 61. As shown in FIG. 2, the paper suction device has a plurality of suction ports 71 arranged in a plurality of rows in the width direction of the printing paper on the paper discharge guide plate 16 in the paper transport area of the paper supply roller 34 to the paper discharge roller 40. Have been. When the paper discharge suction fan 70 is operated, the printing paper is suctioned to the paper conveyance surface by the air suction flow 72 from the suction port 71 to the box space B to prevent the printing paper from floating and to dry the waste ink in the waste liquid tank 60. Promote. A ventilation hole for discharging exhaust gas to the outside of the machine is formed in the main frame rear portion 12a on the discharge side of the discharge suction fan 70, and a hood 73 is attached so as to surround the ventilation hole. This hood 73 reduces the noise level due to exhaust.

[0018]

According to the present invention, the waste ink in the waste liquid tank is dried by using the exhaust suction flow flowing through the box space formed by the frame structure, so that a device for drying the waste ink is not required. The structure is simplified, and the cost can be reduced. Further, by forming the printer main body with a frame structure having a plurality of box spaces, the torsional rigidity in the width direction of the printer can be increased, and problems caused by the torsion of the printer can be eliminated.

[Brief description of the drawings]

FIG. 1 is a perspective view of a printer according to the invention.

FIG. 2 is a front view of a printer main body in the printer according to the present invention.

FIG. 3 is a sectional view taken along line II of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printer 2 Paper feed part 3 Printing part 4 Paper discharge part 5 Leg device 6 Paper discharge receiving device 10 Printer main body 11 Base frame 12 Main frame 13 Rear frame 14 Side frame 15 Paper guide plate 16 Paper discharge guide plate 34 Paper feed roller 37 Control board 40 Discharge roller 60 Waste liquid tank 70 Discharge suction fan 71 Suction port 73 Hood

Claims (5)

[Claims] 1. A printer for performing printing on a printing paper fed from above and discharging the printing paper downward, comprising: a printer body including a frame structure having a box space formed therein; A waste liquid tank that is provided inside and is open to the internal box space and stores waste ink; and a paper suction device that sucks and holds the discharged printing paper, wherein the paper suction device has a frame structure. A paper discharge suction fan provided in the frame structure, and forming an exhaust suction flow using a box space inside the frame structure. 2. The apparatus according to claim 1, wherein the frame structure comprises a lower frame structure and an upper frame structure, and at least the lower frame structure is provided with a waste liquid tank and a paper discharge suction fan. Item 1. The printer according to Item 1. 3. The frame structure includes a side frame, a base frame forming a bottom of a printer body,
A main frame, a rear frame having a rear frame rear end having a lower end coupled to the rear side of the main frame, and a rear frame having an upper rear frame bent from the rear frame rear to the front of the printer body; The main frame has a lower end coupled to the base frame and forms a rear portion of the printer main body; a main frame partition that is bent from the main frame rear portion to partition upper and lower box spaces; and a print head. 3. The printer according to claim 2, wherein the printer is formed in a side-view crank shape in which a front portion of a main frame which forms a front side of the printer body up to a paper feeding portion is bent. 4. A paper guide plate is disposed on the front side of the upper fox space defined by the main frame partition, and the front side of the lower box space is covered with a paper discharge guide plate having a suction port. 4. The printer according to claim 3, wherein the printer is operated. 5. The printer according to claim 1, wherein a hood is provided at a discharge port of the discharge suction fan.