JPS62271771A - Recorder - Google Patents

Abstract

PURPOSE:To enable easy replacement of a recording paper cassette as a unit without need for drawing out a recording paper when fitting the recording paper, by providing a support member for reciprocating a feeding roller between a first position for pressing against the recording paper and a second position on the outside of an opening part of the recording paper cassette. CONSTITUTION:A switch for rewinding a recording paper 7 is pressed to reversely rotate all rollers. A roll 8 of the recording paper is rotated in the direction of an arrow K to take up the recording paper 7. When an end part of the paper 7 reaches the position of a recording paper pressing roller 24b, the condition is detected by a detector, and all rollers are stopped. With a cam 32 rotated, a roller support plate driving lever 29 is turned in the direction of an arrow E. Simultaneously, a roller support plate 27 is turned, and a recording paper driving roller 25 and a payout roller 26 are lowered, resulting in that a recording paper cassette 24 can be sliden in the direction of a shaft 8a, and it can be taken out from a chassis 65. A new recording paper cassette 24 is fitted to the chassis 65 by sliding, and an operation reverse to the detaching operation is performed, thereby paying out a recording paper 7 and obtaining a condition ready for printing.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention Industrial Field of Application The present invention involves feeding a roll of recording paper to a heat-sensitive recording head, and printing images such as characters and figures in 8-digit format using the heat-sensitive recording head. The present invention relates to a thermal recording device for recording.

BACKGROUND OF THE INVENTION In recent years, recording devices employing thermal recording methods and thermal transfer recording methods have been actively developed because of their low noise and maintenance-free advantages.

A conventional recording device will be explained below.

FIG. 4 is a cross-sectional view of a main part of a conventional recording device, and 41 is a thermal head in which a large number of heating resistive elements are arranged in a row;
42 is cylindrical, the outer periphery is covered with rubber, and the thermal head 4
1 is a platen that absorbs waviness; 43 is a highly smooth recording paper wound on a roll; 44 is an ink sheet that is pressed by the thermal head 41 and pressed against the platen 42 while overlapped with the recording paper 43; The sheet 44 is a plastic film several microns thick with ink applied thereto. 45 is a supply reel for supplying the ink sheet 44, 46 is a take-up reel for winding up the ink sheet 44 used for recording, 52 and 53 are guide rollers, 47 is a capstan roller, and 48 is a pinch roller.
These two rollers sandwich the recording paper 43,
The recording paper 43 is moved to the thermal head 41 by rotation of the capstan roller 47. Reference numerals 54 and 55 are discharge rollers for discharging the recording paper 43 that has been recorded by the thermal head 41; 49 is a cabinet composed of an upper cabinet 49a and a lower cabinet 49b;
The upper cabinet 49a has a shaft 51 attached to the lower cabinet 49b.
It is attached so that it can rotate freely around the center. Reference numeral 50 denotes a recording paper stand that is attached to the lower cabinet 49b and holds the recording paper 43.

The recording operation of the conventional recording apparatus configured as described above will be described below.

First, the thermal head 41 is separated from the platen 42, the pressure on the ink sheet 44 and the recording paper 43 is released, and the platen 42 and the capstan roller 47 are rotated to move the recording paper 43 in the direction indicated by the arrow. Just send it.

Next, the thermal head 41 is pressed against the platen 42, and the capstan roller 47 is rotated to convey the recording paper 43 in the direction shown by arrow F. At the same time, a recording signal (f) is applied to the thermal head 41 to heat the heating resistor element (not shown in the figure), so that the ink sheet 4
Images are formed one after another on the recording paper 43 by selectively transferring the inks of No. 4 to the recording paper 43. The ink sheet 44 used for recording is taken up by a take-up roller 46 rotating in the direction of arrow G. When recording is finally completed, the platen 42 and capstan roller 47 are rotated to feed the recording paper 43 in the direction indicated by the arrow, and the portion where the image is recorded is cut with a cutter (not shown in the figure). It is cut and discharged out of the cabinet 49 by discharge rollers 54,55.

Next, the attachment of the recording paper 43 of the conventional recording apparatus will be explained.

As shown in FIG.
The upper cabinet 49a is opened by rotating it in the direction indicated by the arrow A. The recording paper 43 wound on a roll is set on the recording paper base 50, the leading edge of the recording paper 43 is passed between the capstan roller 47 and the pinch roller 48, and further pulled out to the upper part of the platen 42. In this state, rotate the cabinet 49a in the direction shown by arrow B,
The upper cabinet 49a is placed in a closed state. This operation completes the attachment of the recording paper 43.

Problems to be Solved by the Invention However, in the above-mentioned conventional configuration, after the recording paper 43 is attached to the recording paper base 50, the recording paper 43 is pulled out and passed between the capstan roller 47 and the pinch roller 48. It is necessary to place the recording paper 43 on the platen 42.
This had the problem of increasing the time required for replacement.

Means for Solving the Problems The present invention provides a feed roller that enters an opening of a recording paper cassette and presses against the recording paper, a first position that presses against the recording paper, and a second roller that comes out of the opening of the recording paper cassette. The feed roller is provided with a support member that reciprocates the feed roller between the two positions.

Effect With the above configuration, the feed roller presses against the paper in the installed paper cassette and feeds out the paper, so there is no need to pull out the paper when installing the paper as in the past, and it is necessary to install the paper in each paper cassette. Can be easily replaced.

Embodiment FIG. 1 is a sectional view of a recording apparatus in an embodiment of the present invention, in which 1 is a thermal head, 2 is a platen, 3 is an ink sheet, 4 is a supply reel, 5 is a take-up reel, and 7 is a recording paper. , 23 are discharge rollers, and these have the same structure as the conventional one. 65 is a chassis, 6 is a removable ink sheet cassette that houses a supply reel 4 and a take-up reel 5, and when the ink sheet 3 is used up, the supply reel 4 and take-up reel 5 can be replaced together. ing. Reference numeral 8 denotes a recording paper roll in which the recording paper 7 is wound into a roll around a shaft 8a. 9 is a capstan roller made of metal and has a relatively high hardness; 10 is a pinch roller 111 having a rubber outer periphery and a surface having a relatively low hardness;
1 is a support member that supports the pinch roller 1o and is rotatable around the shaft 12; 13 is a spring that pulls the support member 11; the spring 13 applies a counterclockwise force to the support member 11, and the pinch roller is pressed against the capstan roller 9. 21 is the recording paper 7 that has passed through the platen 2
22 is a cutter that cuts the recording paper 7, and 60.61 and 62.63 are guide rollers.

65 is a chassis, 67 and 68 are holding members fixed to the chassis 65, and 24 is a recording paper cassette that houses the recording paper roll 8 and is attached to the chassis 65 by sliding in the axial direction of the recording paper roller 8; The paper cassette 24 includes a groove 2411 in which the shaft 8a slides, a shaft 24g1, an arm 24f1 rotatably supported around the shaft 24g, a spring pulling the arm 24f, a recording paper pressing roller 24b1 attached to the arm 24f, and recording. It has an opening 24d1 and an opening 24e1 for feeding out the paper 7, and guide rails 24a and 24c arranged parallel to the shaft 8a, as shown in more detail in FIG. Note that in the recording paper cassette 24, the leading edge of the recording paper 7 is pressed in advance by the recording paper pressing roller 24b, and in this state, the holding members 67, 68 and the guide rails 24a, 24
c, slide the recording paper cassette 24 in the axial direction of the recording paper roll 8, and attach it to the chassis 65. Note that when the recording paper cassette 24 is attached to the shear 65, the recording paper cassette 24 is fixed so as not to move in the vertical direction. 25 enters the opening 24e,
26 is a drive roller that presses against the recording paper roller 8 and feeds the recording paper 7; 26 is a feeding roller that pushes up the recording paper pressing roller 24b and feeds the recording paper 7 by sandwiching the recording paper 7 between it and the recording paper roller 24b; 27 is a shaft; a roller support plate 31 that is rotatably supported by the chassis 65 around 28 and holds the driving roller 25 and the feeding roller 26;
is a bottle provided on the roller support plate 27, and 29 is a shaft 30.
The bin 31 is rotatably supported by the chassis 65.
The roller support plate drive lever 29 is a roller support plate drive lever engaged with a spring (not shown in the figure).

) in the direction shown by arrow C. 32 is a drive cam that rotates around the shaft 19.

The path of the recording paper 7 from the feeding roller 26 to the outside of the chassis 65 via the capstan roller 9, the platen 2, the reverse roller 21, and the ejection roller 23 is as follows.
This is secured by paper guides (not shown in the figure) that sandwich the recording paper 7 from both sides.

Regarding the recording device of this embodiment configured as described above,
The installation of the recording paper will be explained below.

FIG. 2 shows the state in which the recording paper cassette 24 is attached to the chassis 65. From this state, the cam 32 is rotated, and the roller support plate drive lever 29 is rotated in the direction shown by arrow C. Along with this, the roller support plate 27 rotates,
The recording paper drive roller 25 is in pressure contact with the recording paper roller 8,
Push up the recording paper roller 8. At the same time, the feeding roller 26 pushes up the recording paper pressing roller 24b via the recording paper 7. In this state, when the drive roller 25 and the feed roller 26 are rotated in the direction indicated by the arrow M (hereinafter abbreviated as the forward direction, and the direction indicated by the arrow N is abbreviated as the reverse direction), the recording paper roll 8 is rotated. The recording paper 7 rotates in the direction shown by arrow J and is guided between the capstan roller 9 and the pinch roller 10 by the paper guide. At this time, the capstan roller 9, platen 2, conveyance roller 21, and ejection roller 23 are already rotating in the forward feeding direction, and the recording paper 7 passes through the platen 2 and reverse feeding roller 21, passes through the cutter 22, and then passes through the ejection roller. Reach 23. Note that at this time, the ink sheet 3 serves as a guide for the recording paper 7. When the length of the recording paper 7 passing through the platen 2 reaches the length for recording, the recording paper drive roller 25. Feeding roller 26, capstan roller 9. Platen 2. Conveyance roller 21
．． Discharge roller 23 (hereinafter abbreviated as all rollers)
stops, the thermal head 1 is pressed against the platen 2 via the ink sheet 3 and the recording paper 7, and the state shown in FIG. 1 is reached. Next, by rotating all the rollers in the reverse direction and moving the recording paper 7 in the direction shown by arrow P, a recording signal is sent to the thermal head 1, so that the heating resistor element generates heat and the ink on the ink sheet 3 is used for recording. The image is selectively transferred onto the paper 7, and an image is recorded on the recording paper 7. Next, when the rear end of the recording paper 7 reaches the thermal head 1, all the rollers stop rotating.

Next, the indentation of the thermal head l is released, all the rollers rotate in the forward feeding direction, the leading edge of the portion of the recording paper 7 where the image is recorded is moved to the cutter 22, and the recording paper 7 is moved to the cutter 2.
2 and discharged to the outside of the chassis 65 by the discharge roller 23.

Next, the case of replacing the recording paper roll 8 will be explained.

First, by pressing a switch (not shown in the figure) instructing to rewind the recording paper 7, all rollers are rotated in the reverse direction. As a result, the recording paper roll 8 rotates in the direction shown by the arrow, and the recording paper 7 is wound up. When the end of the recording paper 7 reaches the position of the recording paper pressing roller 24b, a detector (not shown in the figure) detects this, and all the rollers stop rotating. Cam 32 here
When rotated, the two roller support plate drive levers rotate in the direction shown by arrow E, and at the same time, the roller support plate 25 also rotates, and the recording paper drive roller 25 and feeding roller 2 are rotated.
6 is lowered, the recording paper cassette 24 can be slid in the direction of the shaft 8a, and the recording paper cassette 24 can be taken out from the chassis 65. Next, slide the new recording paper cassette 24 and attach it to the chassis 65.
The recording paper 7 is sent out and made ready for recording by performing the opposite operation to that for removal.

In this embodiment, the recording paper cassette 24 is attached to the chassis by sliding it in the axial direction of the recording paper roller 8, but since it is generally openable in this direction for maintenance and inspection, There is no need to newly provide an opening for attaching the paper cassette 24.

Effects of the Invention The present invention provides a feed roller that enters the opening of the recording paper cassette and presses against the recording paper, a first position where the feed roller presses against the recording paper, and a position where the feed roller exits from the opening of the recording paper cassette. Equipped with a support member that moves the feed roller to the second position, the feed roller presses against the recording paper and feeds out the recording paper, so it is easy to install the recording paper because there is no need to sometimes pull out the recording paper as in the past. Moreover, the recording paper cassette can be replaced quickly.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a recording device in an embodiment of the present invention;
Fig. 2 is a sectional view showing the state during the same operation, Fig. 3 is a perspective view of the main part, Fig. 4 is a sectional view of the conventional recording device, and Fig. 5 is a sectional view showing the state during the same operation. be. 24... Recording paper cassette, 24a, c... Guide rail, 25... Drive roller, 26... Feeding roller, 27... Roller support plate, 29... Roller support plate drive lever, 32 ...Drive cam, 67.67...Holding member

Claims (1)

[Claims] a holding means for removably holding a recording paper cassette that holds recording paper therein; and a feed roller that enters an opening of the recording paper cassette held by the holding means and presses against the recording paper to send the recording paper to the recording section. 1. A recording apparatus comprising: a support member that causes the feed roller to reciprocate between a first position where it comes into pressure contact with recording paper and a second position where it comes out from an opening of a recording paper cassette.