JPS6283954A - Recorder - Google Patents

Abstract

PURPOSE:To correctly position the point end of rolled paper, by providing a stepped part, which can position the rolled sheet paper in accordance with a size of paper width, in a holder side while sheet guides in a device side corresponding to said stepped part. CONSTITUTION:A holder 16 is removably mounted to the point end part of an electronic desk calculator, and a curved part 16b is formed toward the upper in the point end of a part parallel with a back surface wall of the electronic desk calculator. A distance between said curved part 16b and a base part 16a is equally formed to the paper width of wide rolled paper R1. While a stepped part 16c is provided between the base part 16a and the curved part 16b, and a width of said stepped part 16c is set equal to the width of narrow rolled paper R2 further to also the width between paper guides 54, 54. Accordingly, correct positioning can be performed only by setting the rolled paper respectively in accordance with its width, and recording can be performed in an objective position of the rolled paper.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording device, and more particularly to a recording device that can use roll paper of a plurality of paper widths.

[Prior Art] There are many recording apparatuses that use roll paper, which is a strip of recording paper wound into a roll.

FIG. 12 shows an example of a recording device using such roll paper.

What is shown in FIG. 12 is an example in which the present invention is applied to an electronic desktop calculator (hereinafter referred to as a calculator), and a holder b is attached to the back wall side of the calculator a.

This holder b is formed into a substantially L-shape, one end of which is removably attached to the back wall of the calculator, and a shaft portion C of the other end extending parallel to the back wall of the calculator.

A bent portion d is provided at the tip end thereof to protrude upward.

A roll paper R is rotatably supported on the shaft C of this holder b, and the unwound end of the paper R is guided into the interior through an insertion slot e formed on the back wall of the calculator, and a recording means (not shown) is used. Recording is done by.

On the other hand, there are multiple types of roll paper with different paper widths, and when using roll paper of different paper widths, it is attached to a holder and the leading edge of the roll paper is inserted through the insertion slot of the device. .

When inserting roll paper, it depends on the type of recording device, but it is possible to use methods such as using the left or right edge of the insertion slot as a reference, or using the center as a reference, or even A suitable paper guide was used.

C Problems to be Solved by the Invention] However, when using roll papers of different paper widths, there are two major problems.

One of these is a problem with the holder. If the holder is simply fitted into the core of the roll paper, the position will shift while the roll paper is rotating, making it impossible to feed the recording paper accurately. It may become twisted, damaged, or the record may not be in the correct position.

The other problem is on the device side: unless there is a means to accurately guide the leading edge of the roll paper to the platen, the leading edge of the roll paper cannot be accurately positioned when different roll papers are used.

C. Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a stepped portion on the holder side for positioning the rolled sheet according to the paper width size, and also provides a stepped portion corresponding to this stepped portion. Therefore, we adopted a structure in which a sheet guide is provided on the equipment side.

[Function] If the structure described above is adopted, the roll paper can be accurately positioned and held by selecting the step part of the holder according to the paper width, and the guide part provided on the device side can be moved to the holder side. If the selection is made in accordance with the stepped portion, the leading end of the roll paper can be accurately positioned and set with respect to the apparatus.

[Example] Hereinafter, the present invention will be described in detail based on the example shown in the drawings. In the following embodiments, the recording device will be explained using a printing device used in a calculator as an example; however, the present invention is not limited to this embodiment, and can be applied to various recording devices such as computers, word processors, electronic typewriters, etc. It is applicable to the device.

[First Embodiment] FIGS. 1 to 6 explain the first embodiment of the present invention, and FIG. 1 shows the external appearance of a calculator equipped with the recording device of this embodiment. , numerals 10 and 11 in the figure are the upper case and lower case of the calculator, respectively, and the upper case 10. Various functional parts of the calculator are built into the lower case 11. A keyboard 12 is arranged on the front side of the upper case 10, and data can be input via this keyboard. Data input from the keyboard 12 is processed by a central processing unit (not shown), and the results are displayed on the display unit 14.

Further, a paper cutter 15 molded from a transparent material such as acrylic resin is disposed on the upper end side of the upper case, and this paper cutter 15 is fixed to a printer lid 18 that is removably attached to the upper case 1°. and the recording paper holder 1
The roll-shaped recording paper (roll paper) 17 held at 6 is cut.

That is, the recording paper 17 held in the holder 16 is unwound by the operator and inserted into the insertion slot 19, and after a predetermined recording is performed by the recording device, it is also ejected from the recording paper output port 20 and cut by the paper cutter 15. be done.

The upper end portion 25 of the upper case 1o is rotatably supported on a shaft as will be described later, and is configured to be opened.By operating a lock lever 26, the upper end portion 25 can be opened or locked.

2 and 3 illustrate the internal structure when the upper end portion 25 is opened. In FIG. 2, 31 is a printer board, and various parts are fixed onto this board 31. The motor 32 is a drive motor, and its rotation is transmitted to the drive pulley 34 via a gear train 32a. A type belt 36 is attached between the driving pulley 34 and the driven pulley 35.

On the outer peripheral surface of this type belt 36, type characters such as numbers and symbols are integrally molded as shown in Figure NIJ3. A carriage shaft 38 is horizontally suspended between the driving pulley 34 and the driven pulley 35, and a carriage 37 is mounted so as to be able to reciprocate along this carriage shaft 38. carriage 3
The forward movement of 7 is performed according to the printing, and the backward movement is performed by a coil spring 39 for return.

A hammer (not shown) is built into the carriage 37, and this hammer can be activated by energizing the solenoid 33.

That is, the type belt 36 is rotated by the driving pulley 34 and the driven pulley 35 rotated by the motor 32, and when the desired type to be recorded reaches a position corresponding to the hammer built in the carriage 37, the solenoid 33 is energized. The type belt 36 is temporarily stopped and then pressed with a hammer to record on the recording paper 17 loaded between the platen 45 and the type belt 36.

A carry operation is performed in synchronization with the completion of such a recording operation, and the carriage 37 moves in the direction of the upper digits (towards the right in Fig. 2).
After the carriage 37 is carried up by one digit and restarts the rotation of the type belt 36 for the desired number of digits, the carriage 37 is pulled back to the home position (the left end in FIG. 2) by the coil spring 36. , the paper feed operation is performed in synchronization with the carriage return. Note that an ink roller 34' is attached to the type belt 36 and supplies ink.

The paper is fed by sandwiching the recording paper 17 between a holding device such as a pinch roller 40 and a feeding device such as a feed roller 46.
This is done by rotating the feed roller 46. The feed roller 46 is rotatably attached to a shaft 47 horizontally suspended on the substrate 31, while the vinch roller 40
is rotatably attached to a pinch roller shaft 41 attached to a platen 45. Pinch roller 40. Pinch roller shaft 41. In this embodiment, the platen 45 and the upper guide 55 formed continuously with the platen are integrated into a platen unit (U). The platen unit U includes at least a platen, and the platen includes an upper guide 55, a pinch roller 40, and so on. It is constructed by combining one or more of the pinch roller shafts 41. This platen unit can be rotated about a rotation axis 46' as indicated by the arrow in FIG. This rotation is performed by fitting a pin 48 attached to the back side of the upper end portion 25 into a groove 49 formed in the platen 45 so as to be slidable therein.

That is, the lock lever 26 is disengaged from the engaging portion 25a of the upper end portion 25, and the torsion coil spring 5 attached to the shaft 46' is released.
When the upper end 25 is opened with the help of the force of the roller 0, the platen 45 rotates clockwise as shown in FIGS. can be easily inserted. Furthermore, there is a protrusion 5 on the inside of the board 31 into which the platen is inserted.
1 is provided, and when the recording paper 17 is installed, the recording paper 17
By inserting the recording paper 17 between the lower side of the protrusion 51 and the lower guide 52, the recording paper 17 can be temporarily held and the recording paper can be loaded securely and stably.

Incidentally, a pair of paper guides 54, 54 are provided on the lower guide 52 via a feed roller 46. These paper guides 54,54 are connected to shafts 55, 54, 54, as shown in FIG.
The shaft 55 is rotatably supported by a bearing portion 55a on the lower side of the lower guide 52.

Further, a torsion coil spring 56 is wound around the shaft 55, and this spring causes the paper guide 54°54 to move toward the lower guide 5.
It is given a rotational force to protrude upward from an opening 52a formed in 2.

The spacing between these paper guides 54.54 is the same as the width of the narrow roll paper. Also, the paper guide 54°54 is the platen 4.
When 5 is closed, it is pushed and retracted so that it is flush with the lower guide 52.

By providing the paper guides 54, 54 as described above, it is possible to guide recording paper of two different widths, large and small, together with the space between the side walls from which the projections 51 are protruded.

On the other hand, the holder 16 is constructed as shown in FIGS. 4 to 6. That is, the L-shaped holder 16 has its base end 16a removably attached to the back wall of the calculator, and has a bent portion extending upward at the tip of the portion parallel to the back wall of the calculator. 16b is formed.

The distance between the bent portion 16b and the base end 16a is the same as the paper width of the large roll paper R1.

Furthermore, a step portion 16c that is one step lower is formed in the holder between the base portion 16a and the bent portion 16b. This stepped portion 16C has the same length as the distance between the paper guides 54 and 54, and is located at a corresponding position. This stepped portion 16c
A narrow roll paper R2 is attached to.

The relationship between the holder having such a structure and the paper guide is shown in FIG. 6. For example, the width of roll paper R1 is 57 mm.
, R2 has a width of 38 mm.

Further, in this embodiment, the positioning reference method for the roll paper, which is the recording paper, is a center reference.

As described above, this embodiment employs a structure in which a means for holding or positioning roll paper of two different widths, large and small, is provided at corresponding positions on the holder side and the apparatus main body side. Accurate positioning is possible simply by setting the roll paper according to the width of the paper, and accurate recording is possible at the desired position on the roll paper.

[Second Embodiment] FIGS. 7 and 8 illustrate a second embodiment of the present invention. In the figures, the same parts as in FIGS. Omitted.

In this embodiment, another step 16ci is formed in the center of the step 16c of the holder 16. This step 1
The length 6d is shorter than the length of the stepped portion 16c.

Therefore, the roll paper R is narrower than the roll paper R2.
3 can be attached to this stepped portion 16d.

In this way, three types of roll paper having different widths can be used.

In this case, another paper guide may be provided on the lower guide 52 on the recording apparatus main body side.

[Third Embodiment 1 By the way, in the first and second embodiments described above, an example of the center reference method was shown in which the center of the recording unit or the center of the roll paper is used as the position reference, but if the center reference is not the center reference, As shown in FIG. 9, the position of the stepped portion 16c etc. may be shifted from the central portion in either the left or right direction, and the paper guide may also be formed accordingly.

Even if such a structure is adopted, roll paper having different paper widths can be used.

[Fourth Embodiment] FIG. 10 explains a fourth embodiment of the present invention, and in this embodiment, the structure of the roll paper holder is different from the above-described embodiment.

That is, the holder indicated by reference numeral 57 has one set of left and right arms 58.
It consists of 58 pieces.

These one set of arms 58 are formed symmetrically,
A shaft 58a is provided at the base thereof to protrude toward opposite sides.

These shafts 58a are slidably and rotatably fitted into through holes 59a formed across a block 59 protruding from the bottom of the back side of the calculator.

Further, a gap 59b is formed on both sides of the block 59, and the arm 58 can be freely fitted into the gap 59b, and the base of the arm 58 is fitted into this gap.

Furthermore, 1fIt59C is formed in the horizontal direction in the block 59 at a position beyond the left and right grooves 59b of the block 59, and the base of the arm 58 is slidably fitted into this groove 59c.

On the other hand, a cylindrical bent part 58b is protruded inwardly from the tips of the left and right arms 58.58 on the same axis, and a shaft 58c is provided at an eccentric position on the side surface of each bent part 58b. are formed on the same axis.

Next, a method of using this embodiment configured as described above will be explained.

When using narrow roll paper R2, the shaft 58a of each arm 58 is blown by the inside of the base end of the arm 58,
Push it into the through hole 59a until it contacts both left and right edges of the hole 59.

At this time, the base end of the arm 58 is in the gap 59b, the shafts 58c and 58c are closest to each other, and the width of the roll paper R2 and the width between the bent parts 58b and 58b are the same, so the shaft 58c
, 58c can rotatably hold the roll paper R2.

On the other hand, when using a wide roll paper R1, the arm 5
8 are fitted into the grooves 59c, and the roll paper R1 is pulled out using the bent portions 58b, 58b.
is held freely rotatable.

In addition, when the distance between the arms 58 and 58 is opened to the maximum,
The width should be larger than the maximum width of the roll paper, so that the roll paper can be freely attached and removed.

The paper guide on the main body side of the apparatus is the same as in the embodiment described above.

Even if such a holder structure is adopted, two types of roll paper having different paper widths can be accurately positioned and used.

[Fifth Embodiment] FIG. 11 is for explaining a fifth embodiment of the present invention. In this embodiment, there is a further end at the tip of the stepped shaft 58c of the holder 57 shown in FIG. A single stepped shaft 58d is provided to protrude on the same axis.

If such a structure is adopted, even narrower roll paper R
3 can be mounted using the shaft 58d.

Therefore, in this embodiment, roll paper of three different widths can be used.

In each embodiment, the rolled sheet is not limited to recording paper, but includes recordable recording media such as plastic thin plates.

[Effects] As is clear from the above description, according to the present invention, in a recording device equipped with a roll paper holder, a plurality of sets of steps corresponding to the narrow width of the roll paper are provided on the holder side. A structure is adopted in which a holding section is formed and multiple sets of paper guides are provided on the main body side of the device in correspondence with these stepped holding sections, allowing roll paper of different widths to be accurately positioned and loaded. be able to.

[Brief explanation of drawings]

1 to 6 illustrate a first embodiment of the present invention, in which FIG. 1 is an external perspective view, FIG. 2 is a perspective view showing the internal structure, and FIG. 3 is a cross-sectional view showing the internal structure. Figure 4 is a perspective view showing the structure of the holder, Figure 5 is an explanatory diagram of the installation state of the roll paper, Figure 6 is an explanatory diagram showing the relationship between the paper guide and the holder, and Figures 7 and 8. The figure is an explanatory diagram of the mounting state of the roll paper explaining the second embodiment of the present invention, and FIG. 9 is the third embodiment of the present invention.
Fig. 10 is a perspective view of the holder to explain the fourth embodiment of the present invention, and Fig. 11 is a fifth embodiment of the present invention. 12 is a perspective view illustrating the conventional structure. 16.57...Holder 16a...Base 16b...
・Bending portions 16c, 16d...Stepped portions 54...Paper guide 58...Arm 58b...Bending portions
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Claims (1)

[Claims] A recording device equipped with a holder for supporting a rolled sheet, characterized in that the holder is provided with stepped portions corresponding to the paper width size of the sheet, and a sheet guide is provided on the apparatus main body side corresponding to these stepped portions. recording device.