JPH07137373A - Printer device - Google Patents

Abstract

PURPOSE:To make an occupied area contractable without spoiling printing quality, in a printer device wherein a tractor is projected out of the rear surface of a main body housing. CONSTITUTION:A tractor retaining mechanism 27, retaining a tractor 5 supported by the fore end through a bearing so as to be pivotably into up-and- down direction at a predetermined position and changing the curvature of a transfer passage 8, is provided so as to permit the retention of a position when the tractor 5 is pivoted upward until the limit of practical use of bending of printing paper is allowed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer device which conveys printing paper by a tractor protruding from the rear surface of a main body housing.

[0002]

2. Description of the Related Art A printer device used for outputting a hard copy in a personal computer or the like is, for example,
A tractor that sequentially conveys printing paper is arranged at a position protruding from the rear surface of the main body housing, and a guide member arranged at a position communicating with the tractor forms a conveyance path for the printing paper inside the main body housing. It has a structure in which a printing mechanism for printing various information on the printing paper is arranged on the road.

However, in such a printer device, since the tractor projects from the rear surface of the main body housing, the area occupied by the tractor increases. Therefore, the applicant of the present invention has practically used a printer device in which such a tractor is rotatably supported at the front end in a vertically rotatable manner so that a tractor positioned substantially horizontally during use is retracted upward when not in use. Turned into

Therefore, the printer apparatus put to practical use by the present applicant will be described below as a conventional example with reference to FIGS. 4 and 5. Office processing device 1 which is this printer device
Has a paper feed port 3 formed on the rear surface of the main body housing 2 and a paper discharge port 4 formed on the upper surface. The tractors 5 arranged in a pair inside the paper feed port 3 on the left and right sides of the main body housing 2. It projects from the rear surface. A platen roller 6 and a guide plate 7 which is a guide member are arranged in opposition to each other at a position where the platen roller 6 communicates with the tractor 5 inside the main body housing 2. It is curved upward from the rear so as to face the outer peripheral surface and communicates with the sheet discharge port 4.

By doing so, in the office processing apparatus 1, printing paper (not shown) communicating from the paper feed port 3 on the rear surface of the main body housing 2 to the paper ejection port 4 on the upper surface.
The transport path 8 is formed inside the main body housing 2 in a shape that curves upward from the rear. The tractor 5 having such a transport path 8 is provided with a feed roller 10 having an engaging pin 9 continuously provided on the outer peripheral surface thereof.
A box-shaped tractor frame 13 is rotatably supported by a front end 12 and a rear end 12 of the tractor frame 13.
The whole structure is rotatably supported in the up and down direction by the support shaft 11 at the front that penetrates through.

In the office processing apparatus 1, the drive motor 14 disposed below the inside of the main body housing 2.
Is connected to the platen roller 6 by a belt transmission mechanism 15 and is connected to the tractor 5 by a gear transmission mechanism 16. In this paper processing apparatus 1, a serial type impact head 17 as a printing mechanism is arranged at a position facing the outer peripheral surface of the platen roller 6 via the transport path 8, and the impact head 17 is the above-mentioned. It is movably supported in the axial direction of the platen roller 6.

In the office processing apparatus 1 having such a structure, the tractor 5 draws the printing paper arranged at the rear of the main body housing 2 into the main body housing 2, and the tractor 5 and the platen roller 6 are provided. The impact head 17 prints various kinds of information on the printing paper sequentially conveyed on the conveyance path 8 from the paper feed port 3 of the main body housing 2 to the paper ejection port 4.

The office processing apparatus 1 reduces the occupied area by rotating the tractor 5 upward about the support shaft 11 at the front end when the product is shipped or stored. It has become. The tractor 5 thus rotated upward is held on the rear surface of the main body housing 2 by a stopper (not shown).

[0009]

In the above-mentioned office processing apparatus 1, the tractor 5 is rotated upward about the support shaft 11 at the front end and held on the rear surface of the main body housing 2 for shipping or storage. It is designed to reduce the occupied area such as time.

However, since the tractor 5 protrudes from the rear surface of the main body housing 2 in use of the office processing apparatus 1, the occupying area of the tractor 5 increases and the degree of freedom of installation is hindered.

As means for solving such a problem,
It can be assumed that the tractor 5 is arranged at a position where it is rotated upward within a range where it communicates with the platen roller 6 and the guide plate 7, but in this case, the curve of the conveyance path 8 for printing paper becomes remarkable. When the transport path 8 is largely curved in this way, a general printing paper or the like used as one sheet can be satisfactorily transported, but a slip or paper thickness in which a large number of printing papers are overlapped does not occur. Good transportation of a large amount of printing paper (both not shown) is difficult.

For this reason, in a printer device such as the office processing device 1 which also utilizes printing paper which is difficult to convey in such an excessively curved state, the tractor 5 is arranged at a position rotated upward. It is difficult to reduce the occupied area.

[0013]

A tractor for sequentially transporting printing paper is arranged at a position projecting from a rear surface of a main body housing, and the printing paper is provided inside the main body housing by a guide member arranged at a position communicating with the tractor. A printing mechanism for printing various kinds of information on the printing paper is arranged on the transport path, and the front end of the track is rotatably supported so that the rear end can be displaced in the vertical direction. In the printer device described above, a tractor holding mechanism for holding the tractor rotatable at a predetermined position within a range in which the print sheet can be conveyed on the curved conveying path is provided.

[0014]

[Operation] By holding the tractor pivotally supported in the vertical direction at the front end in the vertical direction by the tractor holding mechanism,
The degree of curvature of the print paper transport path changes, and the area occupied by the printer device in which the tractor projects from the rear surface of the main body housing changes.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. With respect to the printer device illustrated in the present embodiment, the same parts as those of the printer device described as a conventional example have the same names and reference numerals, and detailed description thereof will be omitted.

First, in the office processing device 18 which is the printer device, as shown in FIG.
A tractor 5 projects rearward from a paper feed port 3 on the rear surface, and a conveyance path 8 for a print sheet (not shown) communicating from the tractor 5 to a paper ejection port 4 on the upper surface of the main body housing 2 is provided with a platen roller 6. And a guide plate 7 which is a guide member, etc., is formed in a shape curved upward from the rear.

Then, in the office processing apparatus 18, FIG.
Also, as illustrated in FIG. 3, a pair of left and right tractors 5 is connected to the inner side of one guide plate 20 together with the spring plate 19 by the support shafts 11 and 12, and together with the guide plate 20, the spring plate 19 and the tractor. A support shaft 11 is pivotally supported at the front end thereof by a support shaft 11 so as to be vertically rotatable. Here, the spring plate 19 is formed with a swing arm 21 which is elastically swingable by a notch in a substantially central portion, and an engagement pin attached to a tip end portion of the swing arm 21. The reference numeral 22 projects outwardly through the through hole 23 of the guide plate 20 so as to be retractable.

In the office processing apparatus 18, the support shaft 11 that rotatably supports the tractor 5 together with the guide plate 20 has a pair of body frames 24 facing each other.
Is mounted in the concave groove 25 of the main body frame 24, and a large number of engaging holes 26 are vertically formed in a rear edge portion of the main body frame 24 in an arc shape around the support shaft 11 mounted in the concave groove 25. It is in communication. Therefore, the engagement pin 22 of the spring plate 19 penetrating the through hole 23 of the guide plate 20 is removably engaged with one of the engagement holes 26 of the main body frame 24, so that Tractor holding mechanism 2 for holding a tractor 5 rotatable in a predetermined direction at a predetermined position
7 are formed.

In the office processing device 18 having such a structure, the tractor 5 draws the printing paper arranged at the rear of the main body housing 2 into the main body housing 2, and the tractor 5 and the platen roller 6 are provided. At the conveyance path 8 from the paper feed port 3 of the main body housing 2 to the paper ejection port 4
The impact head 17 is applied to the printing paper that is sequentially conveyed above.
Prints various information.

The office processing device 18 is shown in FIG.
As illustrated in (b), normally, various information is printed on one flexible printing sheet in a state where the tractor 5 is rotated upward and the transport path 8 is significantly curved.
By doing so, the office processing device 18 can satisfactorily convey the flexible printing paper on the excessively curved conveying path 8 and supply it to the information printing, thus reducing the occupied area and providing free installation. The degree can be improved.

The office processing device 18 is, for example,
When using printing paper with a large paper thickness or multiple overlapping slips (both not shown) as printing paper,
As illustrated in (a), by performing the information printing in the state in which the tractor 5 is rotated downward, the printing paper that is difficult to bend can be satisfactorily conveyed in the conveyance path 8 and used for the information printing. It is supposed to be donated.

Further, in the office processing apparatus 18, the engagement pin 22 of the spring plate 19 which is rotatable together with the tractor 5 is selected as one of the many engagement holes 26 which are vertically connected to the body frame 24. The tractor 5 is held in multiple stages in the vertical direction by the positive engagement. Therefore, when there is only one type of printing paper used in the office processing device 18, the tractor 5 is rotated upward and held at the position up to the practical limit where the printing paper is allowed to bend. Therefore, the area occupied by the office processing device 18 can be reduced with high efficiency without impairing the print quality.

In the present invention, the forward / backward direction is defined on the assumption that the movement of the tractor 5 is the forward movement. However, this is defined for the sake of convenience in order to simplify the description, and the actual installation and use of the device. The direction of is not limited.

[0024]

As described above, according to the present invention, the tractor for sequentially conveying the printing paper is arranged at the position protruding from the rear surface of the main body housing, and the inside of the main body housing is provided by the guide member arranged at the position communicating with the tractor. A transport path for the printing paper is formed in the print path, and a printing mechanism for printing various information on the print paper is disposed on the transport path. The front end of the track is rotatably supported and the rear end is vertically moved. The tractor holding mechanism is provided with a tractor holding mechanism that holds the tractor that is rotatable in a range where the printing paper can be carried in the curved carrying path in a predetermined position. By rotating the tractor upward and holding it in the position up to the practical limit where the printing paper can be bent, the area occupied by the printer can be reduced without impairing the printing quality. Those having the effect of such bets can.

[Brief description of drawings]

FIG. 1 illustrates an internal structure of an office processing apparatus that is an embodiment of a printer apparatus according to the present invention. FIG. 1A is a vertical cross-sectional side view illustrating a state in which a tractor is held below, and FIG. It is a vertical side view which illustrates the state hold | maintained above.

FIG. 2 is an exploded perspective view illustrating a peripheral structure of a tractor.

FIG. 3 is a vertical sectional front view illustrating the peripheral structure of the tractor.

FIG. 4 is a vertical cross-sectional side view illustrating the internal structure of an office processing apparatus which is a conventional example of a printer apparatus.

FIG. 5 is a perspective view illustrating the appearance.

[Explanation of symbols]

 2 Main body housing 5 Tractor 7 Guide plate 8 Conveyance path 17 Information printing mechanism 18 Printer device 27 Tractor holding mechanism

Claims (1)

[Claims] 1. A tractor that sequentially conveys printing paper is arranged at a position projecting from a rear surface of a main body housing, and a guide member arranged at a position communicating with the tractor forms a conveyance path for the printing paper inside the main body housing. In a printer device in which a printing mechanism for forming various information on the printing paper is arranged on the transport path, the front end of the track is rotatably supported, and the rear end is vertically displaceable. A printer device, comprising: a tractor holding mechanism for holding the tractor rotatable at a predetermined position within a range in which the print sheet can be transported on the curved transport path.