JPH08157116A - Recording device - Google Patents

Abstract

PURPOSE: To enable setting for paper sheets to be reliably performed by separating a paper sheet conveying roller from a driven side roller until a paper sheet cassette is completely mounted when the paper sheet cassette is mounted. CONSTITUTION: In a recording device, a paper sheet cassette 1 housing paper sheets 2 is mounted into a main body case, and the paper sheets 2 housed in the paper sheet cassette 1 are conveyed to a recording part by a paper sheet conveying roller 3, and recording is performed. When the paper sheet cassette 1 is mounted, the paper sheet conveying roller 3 is separated from a driven side roller 4 to be rotated together with the paper sheet conveying roller 3 by a tongue-like part on the front surface of the paper sheet cassette 1.

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 adapted to record on a folded long recording sheet.

[0002]

2. Description of the Related Art A plurality of sheets are placed on a placing table in a cassette case, the placed sheets are separated one by one by a separating roller, and are conveyed to a recording section by a paper feeding roller. A recording device for ejecting recorded paper to the outside of the main body is generally used.

[0003]

However, in the recording apparatus having the above-mentioned structure, the sheet separating mechanism for separating the sheets one by one, the sheet feeding mechanism for conveying the separated sheets to the recording section, and the A mechanism such as a paper ejection mechanism for ejecting recorded paper is required, which increases the size of the device,
Alternatively, there is a problem that the demand for price reduction cannot be satisfied.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a paper cassette storing paper is mounted in a main body case, and the paper stored in the paper cassette is conveyed. A recording device configured to convey to a recording unit by a roller and perform recording, wherein the tongue-shaped portion on the front surface of the paper cassette is used to mount the paper cassette when the paper cassette is mounted. It is characterized in that the driven side roller that rotates together with the roller is separated from the driven side roller.

[0005]

The above means operates as follows.

When the paper cassette is loaded, the paper transport roller and the driven roller do not come into contact with each other so that the leading edge of the paper is pushed back by these rollers when the cassette is loaded, causing slack, or being determined. It is possible to prevent that the sheet cannot be conveyed without the leading edge of the sheet being installed at the open position.

[0007]

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

1 to 3 are all block diagrams showing an embodiment of the present invention. FIG. 1 is a schematic block diagram of a recording apparatus with a paper cassette mounted, and FIGS. 2 and 3 show the paper cassette. FIG. 6 is an explanatory view of a main part showing a state of mounting, FIG. 4 and FIG. 5 show a paper cassette, FIG. 4 is a perspective view thereof, and FIG. 5 is a sectional configuration view.

In the figure, reference numeral 1 denotes a paper cassette. As will be described later, a paper 2 made of heat-sensitive paper that develops color due to long heat is folded in a zigzag shape with a predetermined length inside the paper cassette 1. It is stored. As shown in FIG. 6, perforations 2b are formed in the bent portion of the sheet 2 so that the sheet 2 can be easily cut at this portion, and a sheet to be described later is formed at a part of the end portion in the width direction. The marker portion 2a detected by the detection sensor is formed. Also,
At the rear portion of the upper surface of the paper cassette 1, the protruding portion 1a is formed so that a predetermined space is formed with the uppermost portion of the paper 2 stored inside.
Is formed with an inclined front portion in the paper feeding direction, and the front portion of the paper 2 is placed and held on the front portion thereof.
Are formed. Further, the tongue-shaped portion 1b is a hole into which a paper-conveying roller 3 and a driven-side roller 4 which convey the paper 2 by sandwiching the leading end of the paper 2 placed from both sides and rotating the same are inserted. 1c and 1d are formed.

The sheet conveying roller 3 is a motor (not shown).
Is connected via a gear group and a one-way clutch (not shown), and is rotated only in the 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.
Is urged in a counterclockwise direction in the figure by an elastic member (not shown) so as to urge the sheet conveying roller 3. A paper detection sensor 6 detects the presence of the paper 2 and the marker portion 2a. The sheet detection sensor 7 is a light reflection type optical sensor, and when there is no sheet or when the marker section 2a is detected, the reflected light is not detected and is in an OFF state, and the sheet 2 is located outside the marker section 2a. It is configured to be in an ON state by receiving the reflected light from 2.

Reference numeral 7 denotes a thermal head having a heating resistor, which is pressed against the platen via the paper 2 and is driven in the width direction of the paper to selectively drive the heating resistor in response to a recording signal to cause the paper 2 to move. 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 it is a continuous sheet (see FIG. 5). However, at this time, since a space is formed in the rear part by the projecting portion 1a, this lifted part is located in this space and the contact force with the paper cassette 2 is reduced, so the load is reduced. It Further, since the inner root portion 1e of the tongue-shaped portion 1b is chamfered or curved, the load on this portion is also reduced. The sheet 2 after the predetermined recording 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 perforation portion 2b.

Next, the operation of mounting the paper cassette 1 in the main body of the recording apparatus will be described with reference to FIGS. 2 and 3. As described above, the paper 2 is folded in a zigzag shape with a predetermined length and stored in the paper cassette 1, but in the unused (initial) state, the paper 2 is placed on the tongue 1b at its tip. It is configured such that a half-cut portion is provided. Therefore, in the initial mounting state, the sheet conveying roller 3 can sandwich the leading end of the sheet 2 with the driven roller 4. When the paper cassette 1 in which the paper 2 is stored and set is mounted in the recording apparatus main body, the paper cassette 1 is provided with the projection 8 formed on the lower case of the recording apparatus main body.
It is inserted so that the tip part is lifted at an angle of 0.5 to 1.5 degrees by riding on. As a result, a slight gap is created between the lower surface of the tongue-shaped portion 1b of the paper cassette 1 and the paper carrying roller 3, so that the paper cassette 1 and the paper carrying roller 3 do not come into contact with each other. Further, as for the driven side roller 4, a support shaft (rotation shaft) of the driven side roller 4 is also provided.
4a is projected from the support arm 5 and the support shaft 4a is positioned on the upper surface of the tongue-shaped portion 1b so that the upper surface functions as a stopper, and the driven roller 4 contacts the paper 2 even if it falls into the holes 1c and 1d. Does not come into contact with the paper transport roller 3,
The paper 2 is not fed back and the paper 2 is not pushed in more than necessary. Then, when the paper cassette 1 is inserted to a predetermined position, the projection 1f is inserted into the concave portion formed in the paper cassette 1, so that the paper cassette 1 is held horizontally. At this time, the sheet conveying roller 3 is also inserted into the holes 1c and 1d, so that the sheet 2 is held between the sheet conveying roller 3 and the driven roller 4. In this state, when the sheet conveying roller 3 rotates, the driven roller 4 also rotates and the sheet is conveyed. 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. It is possible to surely prevent such a problem that loosening occurs or setting is performed in a state where the rollers are not sandwiched 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 conveying roller 3 is driven to convey the sheet 2 from this state, the sheet detecting sensor 7 detects the marker portion 2a, but since the marker portion 2a does not reflect light, it changes to the OFF state. Due to the change of the state of the sheet detection sensor 7, the control means outputs a signal to stop the sheet conveyance once and stops the sheet conveyance roller 3. This position is the reference position. This reference position is a state in which the cut portion (perforated portion) of the sheet 2 is located at the cut position.

When recording, when the sheet 2 is conveyed from this reference position, the marker portion 2a of the sheet 2 passes over the sheet detection sensor 7 and the non-marker portion of the sheet 2 again faces the sheet detection sensor 7 to detect light. Sensor 7 is turned on from OFF state
Change to state. The position of this state change is the recording start position. When the recording is performed from this position and the predetermined recording is finished, the sheet 2 is conveyed as it is, the marker portion 2a is detected again by the sheet detection sensor 7, and the sheet detection sensor 7 is conveyed to the position where it 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 pulled slightly at this time. Therefore, if the length of the marker portion 2a is short, the marker portion 2a may not face the sheet detection sensor 7. To prevent this,
The marker portion 2a is formed with a width of 2 to 3 lines. If the length is too long, the feed amount becomes too long up to the print start position, resulting in waste. This operation is repeated until the paper 2 is used up, and desired recording is performed. Paper 2
The end of is determined when the sheet detection sensor 7 is in the OFF state and does not change to the ON state even if the sheet is conveyed for a predetermined distance.

In the above embodiment, a light reflection type optical sensor is used as the paper detection sensor, but
A light transmissive sensor may be used. In that case, the detection portion formed on the paper 2 is a hole, and when there is paper, it is in the ONN state, when there is no paper, or in the detection portion is in the 0FF state. Further, although the case where the paper is stored in the paper cassette and used has been described, the folded paper may be used as it is, or roll paper or the like may be used. Further, in the above description, the recording apparatus of the type that directly records on the thermal head on the thermal paper has been described, but a thermal transfer printer or a wire dot printer that uses an ink ribbon, an inkjet printer that directly ejects ink to record, or the like. Of course, it can be applied to a recording device.

[0017]

As described above, in the present invention, the use of continuous paper simplifies the paper feeding mechanism as compared with the case of using cut paper, and when the paper cassette is mounted, Since the paper transport roller and the driven roller are separated from each other until the paper cassette is completely installed, it is possible to reliably set the paper.

[Brief description of 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 being mounted in 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 being mounted in 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 illustrating a sheet used in the present invention.

[Explanation of symbols]

 1 paper cassette 2 paper 2a marker part 3 paper transport roller 4 driven roller 7 paper detection sensor

Claims (3)

[Claims] 1. A recording apparatus comprising a main body case in which a paper cassette storing paper is mounted, and the paper accommodated in the paper cassette is conveyed to a recording section by a paper conveyance roller for recording. And a recording device having a means for separating the paper transport roller and a driven roller that rotates together with the paper transport roller when the paper cassette is mounted. 2. The front surface of the paper cassette is formed,
2. The recording apparatus according to claim 1, wherein the tongue-shaped portion that holds the leading edge of the sheet separates the sheet conveying roller and the driven roller from each other. 3. A tongue portion of the paper cassette is formed with a hole for engaging the amount roller, and a stopper portion configured so that the driven roller does not enter a predetermined amount or more. The recording device according to claim 2, wherein