JP3179668B2 - Recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus, and more particularly to a recording apparatus for recording on a folded long recording sheet.

[0002]

2. Description of the Related Art A plurality of paper sheets are placed on a mounting table in a cassette case, the loaded paper sheets are separated one by one by a separation roller, and conveyed to a recording section by a paper feed roller. 2. Description of the Related Art A recording apparatus that discharges a recorded sheet outside a main body is generally used.

[0003]

However, in the recording apparatus having the above-described structure, a sheet separating mechanism for separating sheets one by one, a sheet feeding mechanism for conveying the separated sheets to a recording unit, and A mechanism such as a paper discharge mechanism that discharges the recorded paper is required.
Alternatively, there is a problem that the demand for lower price cannot be satisfied.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a main body case in which a paper cassette containing paper is mounted, and the paper stored in the paper cassette is conveyed. A recording device configured to be conveyed to a recording unit to perform recording by being sandwiched between a roller and a driven-side roller that rotates together with the paper conveyance roller. A tongue having a hole for holding a sheet and exposing a part of the front and back surfaces of the sheet is formed. When the sheet cassette is mounted on the main body case, the tongue is driven by the sheet transport roller and the driven member. is inserted between the side roller, the driven roller is separated once and the paper conveying roller against the bias of the direction of pressing the sheet transport roller, further the sheet cassette
By pushing the paper-conveying roller into the two rollers, the paper-conveying roller and the driven- side roller are dropped into the holes by the urging of the driven-side roller, and the paper is nipped by the two rollers. It is characterized by the following.

[0005]

The above means operates as follows.

When the paper cassette is mounted, the paper transport roller and the driven roller are separated from each other so that they do not come into contact with each other. Therefore, when the cassette is mounted, the leading end of the paper is pushed back by these rollers, causing slack or being determined. It is possible to prevent the sheet from being unable to be conveyed because the leading end of the sheet is not installed at the position where the sheet is placed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A recording apparatus according to the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 are structural views showing one embodiment of the present invention. FIG. 1 is a schematic structural view of a recording apparatus in which a paper cassette is mounted, and FIGS. 2 and 3 show the paper cassette. FIGS. 4 and 5 are views illustrating a sheet cassette, FIG. 4 is a perspective view thereof, and FIG. 5 is a cross-sectional configuration diagram.

Referring to FIG. 1, reference numeral 1 denotes a paper cassette. As will be described later, a paper 2 made of heat-sensitive paper that is colored by a long heat is zigzag-shaped at a predetermined length inside the paper cassette 1. It is stored. As shown in FIG. 6, a perforation 2b is formed in the bent portion of the sheet 2 so that the sheet 2 can be easily cut off, and a part of the end in the width direction is a sheet described later. A marker section 2a detected by the detection sensor is formed. Also,
At the rear of the upper surface of the paper cassette 1, a projecting portion 1a is formed so as to form a predetermined space with the uppermost portion of the paper 2 stored therein.
Is formed with an inclined front portion in the sheet feeding direction, and a tongue-shaped portion 1b on which the leading portion of the sheet 2 is placed and held.
Are formed. Further, in the tongue-shaped portion 1b, a hole into which a paper transport roller 3 for transporting the paper 2 by pinching and rotating the leading end of the placed paper 2 from both sides and a driven roller 4 are inserted. 1c and 1d are formed.

The paper transport roller 3 is a motor (not shown)
And a gear group (not shown) and a one-way clutch, and are rotated only in a direction in which the paper 2 is fed to the recording unit by the rotation of the motor. The driven roller 4 is rotatably attached to the tip of the support arm 5.
Are urged in a counterclockwise direction in the figure by an elastic member (not shown), so that they are urged in the direction of pressing against the sheet conveying roller 3. Reference numeral 6 denotes a sheet detection sensor which detects the presence or absence of the sheet 2 and the marker section 2a. The paper detection sensor 7 is a light reflection type optical sensor. When there is no paper or when the marker 2a is detected, the reflected light is not detected and the OFF state is set. It is configured to be turned on by receiving the reflected light from the light source 2.

Reference numeral 7 denotes a thermal head having a heating resistor. The heating head 7 is selectively pressed by a recording signal while moving in the sheet width direction while being pressed against the platen via the sheet 2 so as to selectively drive the sheet 2. The recording is performed line by line, and when the recording of one line is completed, the sheet conveying roller 3 is driven to convey the sheet 2 by a predetermined distance and the next line is recorded. When the sheet 2 is fed, the rear portion is lifted upward because the sheet 2 is a continuous sheet (see FIG. 5). However, at this time, since a space is formed at the rear portion by the protruding portion 1a, the lifted portion is located in this space, and the contact force with the paper cassette 2 is reduced, so that the load is reduced. You. Further, since a chamfered or curved surface is formed at the inner root portion 1e of the tongue-shaped portion 1b, the load at this portion is reduced. Then, the sheet 2 on which the predetermined recording has been completed is discharged to the outside of the apparatus main body by the rotation of the sheet conveying roller 3, and is cut by the user at a predetermined perforated portion 2b.

Next, the operation when the paper cassette 1 is mounted on the main body of the recording apparatus will be described with reference to FIGS. As described above, the sheet 2 is folded in a zigzag shape at a predetermined length and is stored in the sheet cassette 1, but in an unused (initial) state, the sheet 2 is placed on the tongue-like portion 1b at the leading end thereof. A half-cut portion is provided, so that the sheet transporting roller 3 can pinch the leading end of the sheet 2 with the driven-side roller 4 in the initial mounting state. When the paper cassette 1 in which the paper 2 is stored and set is mounted on the main body of the recording apparatus, the paper cassette 1 is mounted on the projection 8 formed on the lower case of the main body of the recording apparatus.
The tip is lifted at an angle of 0.5 to 1.5 degrees by riding on the vehicle. As a result, a slight gap is formed between the lower surface of the tongue-shaped portion 1b of the paper cassette 1 and the paper transport roller 3, so that the paper cassette 1 and the paper transport roller 3 do not come into contact with each other. The driven roller 4 also has a support shaft (rotation axis) of the driven roller 4.
4a protrudes from the support arm 5, and when the support shaft 4a is positioned on the upper surface of the tongue-like portion 1b, the upper surface functions as a stopper. Without contacting the paper transport roller 3,
The paper 2 is not sent back, and the paper 2 is not pushed more than necessary. When the paper cassette 1 is inserted to a predetermined position, the projections 1f enter the concave portions formed in the paper cassette 1 so that the paper cassette 1 is held horizontally. At this time, since the paper transport roller 3 is also inserted into the holes 1c and 1d, the paper 2 is nipped between the paper transport roller 3 and the driven roller 4. In this state, when the paper transport roller 3 rotates, the driven roller 4 also rotates, and the paper is transported. Therefore, the paper transport roller 3 and the driven roller 4 do not come into contact with each other until the paper cassette 1 is completely installed in the recording apparatus, so that the paper is not pushed backward by these rollers 3 and 4. Indeed, it is possible to reliably prevent the loosening or the setting in a state where the setting is not performed between the rollers 3 and 4.

Next, the operation will be described.

When the paper cassette 1 is mounted, the paper detection sensor 7 detects the reflected light from the paper 2 and turns on. When the sheet transport roller 3 is driven to transport the sheet 2 from this state, the sheet detection sensor 7 detects the marker section 2a, but the marker section 2a does not reflect light and changes to the OFF state. Based on the change in the state of the sheet detection sensor 7, the control means outputs a signal to temporarily stop the sheet conveyance and stops the sheet conveyance roller 3. This position is the reference position. This reference position is a state where the cut portion (perforated portion) of the sheet 2 is located at the cut position.

In recording, when the sheet 2 is conveyed from this reference position, the marker portion 2a of the sheet 2 passes through the sheet detection sensor 7 and the non-marker portion of the sheet 2 again faces the sheet detection sensor 7, and the light detection is performed. Sensor 7 is ON from OFF state
Change to a state. The position of this state change is the recording start position. Recording is performed from this position, and when predetermined recording is completed, the sheet 2 is conveyed as it is, the marker section 2a is detected again by the sheet detection sensor 7, and the sheet detection sensor 7 is conveyed to a position where the state changes from the ON state to the OFF state. And stop. At this position, the sheet 2 is cut by the user, but may be slightly pulled at this time. Therefore, if the length of the marker section 2a is short, the marker section 2a may not be opposed to the sheet detection sensor 7, and in order to prevent this,
The marker part 2a is formed with a width of two to three rows. If the length is too long, the feed amount will be too long before the print start position, resulting in waste. This operation is repeated until the paper 2 runs out, and desired recording is performed. Paper 2
Is determined when the paper detection sensor 7 does not change to the ON state even if the paper transport operation is performed for a predetermined distance after the paper detection sensor 7 is turned OFF.

In the above-described embodiment, the light reflection type optical sensor is used as the paper detection sensor.
A light transmission type sensor may be used. In this case, the detection unit formed on the sheet 2 is a hole, and the ON state is set when there is a sheet, and the detection unit is set to the OFF state when there is a sheet. Also, the case where the paper is stored in the paper cassette and used has been described, but the folded paper may be used as it is, or roll paper may be used. Furthermore, in the above description, a recording apparatus of the type that directly records on a thermal head on thermal paper has been described. However, a thermal transfer printer or a wire dot printer using an ink ribbon, an ink jet printer that directly ejects and records ink, and the like are described. Of course, it can be applied to a recording device.

[0017]

As described above, in the present invention,
Install the paper cassette containing the paper in the main body case,
The paper stored in the paper cassette is transported by a paper transport roller and the paper transport roller.
Between the driven roller that rotates with the paper transport roller
So that it is conveyed to the recording unit by pinching and recording is performed.
A recording apparatus comprising: a front portion of a paper cassette;
Holds the paper and exposes a part of the front and back surfaces of the paper
A tongue with a hole is formed, and the paper cassette is
When the paper is loaded on the paper feed roller, the tongue
The driven roller is inserted between the
Paper feed roller against the bias in the direction of pressing
The paper cassette is pushed into both rollers.
Paper feed roller by the bias of the driven roller.
The roller and the driven roller into the hole,
By holding the paper, it is held by the tongue.
The paper that is in the rolled state is
Because the front and back surfaces are securely clamped from both sides,
This has the effect that the paper can be set easily and reliably.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a recording apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating a state in which a recording apparatus according to an embodiment of the present invention is in the process of mounting a paper cassette.

FIG. 3 is an explanatory diagram illustrating a state in which a recording apparatus according to an embodiment of the present invention is in the process of mounting a paper cassette.

FIG. 4 is a perspective view of a paper cassette used in the recording apparatus of the present invention.

FIG. 5 is a side sectional view of a paper cassette used in the recording apparatus of the present invention.

FIG. 6 is an explanatory diagram for explaining a sheet used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper cassette 2 Paper 2a Marker part 3 Paper conveyance roller 4 Follower roller 7 Paper detection sensor

Claims (2)

(57) [Claims] A paper cassette containing paper stored in a main body case is mounted, and the paper stored in the paper cassette is sandwiched between a paper transport roller and a driven roller that rotates together with the paper transport roller. A recording apparatus configured to convey to a recording unit and perform recording, wherein a tongue shape having a hole for holding the paper and exposing a part of the front and back surfaces of the paper is provided on a front surface of the paper cassette. When the paper cassette is mounted on the main body case, the tongue-shaped portion is inserted between the paper transport roller and the driven roller, and the driven roller is attached to the paper transport roller. The paper cassette is once separated from the paper transport roller against the bias in the pressing direction, and the paper cassette is
By pushing La side, said sheet conveying roller and said driven roller so depress into the hole by the urging of the driven side roller, the recording, characterized in that at the both rollers so as to sandwich the paper apparatus. 2. A driven shaft is provided on the driven roller,
2. The recording apparatus according to claim 1, wherein the tongue-shaped portion is provided with a stopper configured to position the support shaft on an upper surface thereof.