JPS62270356A - Printer - Google Patents

Abstract

PURPOSE:To perform the pulling feed and push-in feed of continuous slip form paper, by selectively driving a tractor apparatus by the order of a reversal control part so as to allow the same to rotate to either one of positive and reverse directions. CONSTITUTION:A printing part 3 formed of a printing head 2 and a platen 1, a tractor apparatus 6 and a paper feed roller pair 4 capable of contacting and separating each other arranged at least in the side opposite to the tractor apparatus 6 across the printing part 3 are mounted. A reversal control part 105 sets two feed modes, that is, the pulling feed mode of slip paper 50 and the push-in feed thereof so as to change over both modes and controls the rotary direction of the platen 1 and the tractor apparatus 6 corresponding to respective feed modes. At the time of the push-in feed mode, the paper feed roller pair 4 is contacted to be rotationally driven so as to impart pulling force to the paper 50 and the dot pattern data supplied to the printing head 2 is reversed and, at the time of the pulling feed mode, control is performed so as to perform printing in the direction reverse to the printing direction.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [(Existing) of the Invention In conventional printer devices, when trying to perform various printing processes on various sheets of paper, there is a limit in one device, and the structure has to be changed. There was a problem in that a plurality of different printer devices had to be prepared.Therefore, the present invention makes it possible to perform both push-in and pull-feeding of continuous sheets in a printer device in which the paper path is formed on a substantially single plane, and to provide a simple method for feeding continuous sheets. By making it possible to feed slips, it is possible to reduce the number of printers installed in one printer: F
This makes it possible to handle a wider variety of printing tasks.

[Industrial application field]

The present invention relates to a printer device used as an output device for one report in an information processing system.

[Conventional technology]

Printers for information processing systems have conventionally used continuous paper and single-cut paper, and printers that can process both continuous paper and single-cut paper have long been known. In such conventional devices, processing of continuous sheets is generally limited to either push-feeding or pull-feeding. On the other hand, as shown in FIG. 14, in a printer device that performs printing by winding continuous paper 50 around a rotating platen 51, the continuous paper can be pushed and fed by switching the direction of a tractor device 56. (1st
A printer device is known that is capable of both pulling and feeding (phantom line in Figure 4) and tension feeding (solid line in Figure 4) (Utility Application No. 57-138287 filed by the present applicant).

[Problem that the invention seeks to solve]

However, when continuous sheets are processed using push-feeding, line feed accuracy is poor, and when using pull-feeding, continuous sheets cannot be automatically evacuated when processing cut sheets, and 1-inch cut processing cannot be performed. There were restrictions. In addition, in the structure shown in FIG. 14, printing is performed with the 1-use cover 50 wound around the platen 51, so printing on thick paper, envelopes, etc., for example, cannot be performed, and multi-sheet copy paper cannot be used. There were inconveniences such as the printing line positions on the paper sheets being out of alignment.

The present invention eliminates the above-mentioned restrictions that are inevitably caused by the structure of printer devices, and provides a printer device that can perform a variety of printing processes using a wider variety of paper types and is also superior in operability for operators. It was done with the purpose of doing so.

[Means for solving problems]

FIG. 1 shows the basic configuration of a printer device according to the present invention. Next, the present invention will be described in detail with reference to the reference numerals in FIG.

A printing section 3 is formed between the platen 1 and the print head 2, and a tractor device 6 is used to feed continuous sheets 50.

The paper path near the printing section 3 has a substantially one-plane structure. A pair of rollers 4 is arranged on the opposite side of the tractor device with the printing section 3 in between, and a second pair of rollers 5 is arranged between the printing section 3 and the tractor device 6 if desired.

The tractor device 6 is selectively driven to rotate in either the forward or reverse direction, and enables the continuous paper 50 to be pulled and fed (rightward in the figure) and pushed (to the left in the figure).

The roller pairs 4 and 5 are driven so as to come into contact with each other only when the continuous sheet is being pushed and fed, and to apply a pulling force to the continuous sheet 50 in one direction to the left.

The reversal control unit 105 can switch between a pull feeding mode and a push feeding mode based on a command from the feeding mode switch 10B or the main unit, and can switch between the tractor device 6 and the platen according to each feeding mode. 1 and the abutment/separation and rotational drive of the 10-ra pairs 4 and 5 are synchronously controlled, and furthermore, the inversion output control of dot pattern data supplied to the print head 2 is performed only in the push feed mode. I do.

[Effect]

In the apparatus of the present invention, the above-described structure allows the paper path of continuous paper 50 and cut paper during push and pull feeding to be formed on substantially one plane at least in the vicinity of the printing section 3, so that it is possible to handle a wide variety of paper types. In addition, by switching the rotation of the tractor device 6 between forward and reverse, push-feeding and pull-feeding of continuous paper 50 are switched. By bringing the feeding roller pair 4 into contact with each other and actively applying a tensile force to the paper with the roller pair 4.

This prevents deterioration in line feed accuracy during push-feeding.

〔Example〕

FIG. 2 shows the state of continuous paper 50 being pushed and fed in the apparatus of the present invention which is equipped with a second pair of rollers.
The figure shows the state during tension feeding.

In the figure, 1 is the platen, 2 is the print head, and 3 is the platen l.
This is a printing section formed between the printing head 2 and the printing head 2. Reference numerals 4 and 5 denote pairs of rollers that control the feeding of paper sheets, and the pair of rollers 4 and 5 are arranged as close as possible to the printing section 3, and each pair of rollers is pivoted at a fixed position. drive roller 4a,
5a, and driven rollers 4b, 5b that move up and down and come into contact with and separate from drive rollers 4a, 5a. 6 is a tractor device disposed further outside the roller pair 5;
The drive pulley 6a, the pair of drive rollers 4a and 5a, and the platen 1 of this tractor device are as follows.

They are connected for synchronous rotation by a timing belt (not shown), and a pulse motor capable of forward and reverse rotation is used as their drive source. 7 is a pair of rollers for discharging the cut sheets, and 9 is a stacker for the discharged cut sheets.

A cutting edge 10 for 1-inch cutting is provided on the outer side of the roller pair 4, and a paper feed slit 11 for cut sheets and continuous sheets to be pulled is opened above the cutting edge 10 and below the nozzle 10. A paper feed tray 12 is connected to this.
is provided. In an apparatus that automatically feeds cut sheets, an automatic sheet feeding device is installed at the position of the sheet feeding tray 12. Reference numerals 13 and 14 are photoelectric sensors for positioning the beginning of paper, and reference numeral 15 is a photoelectric sensor for detecting the evacuation of push-in continuous paper during cut paper processing.

In FIG. 10, the automatic paper feeder 7 is placed in the position of the paper feed tray 12 in FIG.
A more practical example in which 1 was installed was shown. 72 is an automatic paper feed roller, 73 is an elevating table, and 74 is a sheet stacked on the elevating table 73. In the one shown in FIG. 10, the paper feed table 12 is arranged above the automatic paper feeder 71, and the stacker 9 for cut sheets is a double-structure guide plate that guides the paper from the tractor device 6 to the roller pair 5. 9a and a back plate 9b, the guide plate 9a is rotated and switched as shown by the solid line and the imaginary line in the figure, and the back plate 9b is rotated as shown by the solid line and the imaginary line in the figure, and the back plate 9b is rotated as shown by the solid line and the imaginary line in the figure. It can be switched by rotating as shown by the line. The solid line shows the continuous paper feeding state, and the imaginary line shows the single cut paper feeding state. Note that the reason why the back plate 9b is rotatable is to enable continuous paper to be loaded into the tractor device 6 from the left side in the figure.

Furthermore, in the one in FIG. 10, a photoelectric sensor 1 for positioning the paper
3.14 is installed at the same position on the roller pair 4 side,
The roller pair 5 and the printing unit 3 are brought close to each other to reduce the size of the device and also to reduce the upper margin of the paper during push-feeding, so that the push-in continuous paper is moved closer to the print head 2.
The head of the paper is not detected when the paper collides with a paper jam, so that a paper jam can be detected in advance. Note that the beginning of the 5-push-in continuous sheet is performed by detecting the end of the sheet with the sensor 14 and then retracting the sheet by a predetermined amount. Also, a sensor 15 for detecting paper evacuation is provided.

It is arranged in the middle part of the tractor device 6, so that it can perform both paper end detection and vapor end detection at the time of retraction.

Note that in the embodiment shown in FIG. 2 and FIG. 1O.

The reason why the second roller pair 5 is provided between the tractor device 6 and the printing section 3 is to reduce the upper margin of the paper when feeding continuous paper by pushing, and in the one shown in FIG. Furthermore, the function of the discharge roller pair 7 shown in FIG. 2, which pulls out the cut sheets and feeds them into the stacker 9, is also disabled.

4 to 6 show the abutting and separating mechanism of the pair of rollers 4 and 5 in this embodiment.

When feeding cut sheets, press roller pair 4 strongly and press roller pair 5.
The structure is such that the pair of rollers 4 and 5 are brought into weak contact with each other when continuous paper is being pushed and fed, and the roller pairs 4 and 5 are both separated when continuous paper is being pulled and fed. In FIGS. 4 to 6, 21 is a control shaft disposed below the platen 1, 22 is a cam plate fixed to the control shaft 21, and the cam plate has two protrusions 22a and 22b. It is formed. 24 and 25 are driven rollers 4b and 5
These arms 24, 25 are pivotably supported by pins 26, 27, and a fork 28 is attached to the lower end of the arm 24. A protrusion 29 is formed. Reference numerals 30 and 31 are L-shaped links having pins 32 and 33 at their upper ends that engage with the forks 28 and projections 29, whose lower ends extend below the cam plate 22, and whose extended ends have cam followers 34 degrees. 35 is formed, and the L-shaped sink 30.31 is provided with a spring 36.37 that biases it in the direction of opening outward.

The pair of rollers 4 and 5 are brought into contact and separated from each other in a linear manner by rotating the control shaft 21.

In the state of FIG. 4, the cam followers 34.35 are spaced apart from the cam plate 22, so that the L-shaped sinks 30.31 are urged outwardly by the springs 36.37. This biasing force is transmitted from the bin 32 to the fork 28 and biases the lower end of the L-shaped arm 24 to open outward.

The driven roller 4b is brought into contact with the driving roller 4a by the biasing force of the spring 36. Since the L-shaped arm 25 is only provided with a protrusion 29 at its lower end, it does not engage with the outwardly opening bin 33, and the driven roller 5b simply contacts the driving roller 5a due to its own weight. This state is a state in which the cut sheet is fed.

In the state shown in FIG. 5 in which the control shaft 21 is rotated and the cam follower 35 is brought into contact with the lower step 22a of the protrusion, the L-shaped sink 30, 31 swings toward the inside of the coffin, and the bin 32 is rotated. Positioned between the forks 28, the engagement between the L-shaped sink 30 and the arm 24 is released, and the pin 33 still does not come into contact with the protrusion 29, so in this state, the driven roller 4b.

5b comes into contact with the drive rollers 4a, 5a due to its own weight. This state is the push-feeding state of continuous paper.

In the state shown in FIG. 6 in which the control shaft 21 is further rotated to bring the cam follower 35 into contact with the higher step 22b of the protrusion,
The L-shaped sunk 30.31 swings further inward and the bin 32.
33 forces the fork 28 and protrusion 29 inward.

This pushing causes the L-shaped arms 24.25 to swing inward, and the driven rollers 4b, 5b are separated from the drive rollers 4a, 5a. This state is the state in which continuous paper is pulled and fed.

Switching between forward and reverse rotation of the tractor device 6, and stopping the rotation of the tractor device 6 when feeding a cut sheet.

This may be done in conjunction with the rotational movement of the control shaft 21.

By the way, as shown in FIGS. 7(a) and 7(b), when continuous paper is pulled and fed, the line feed direction of the paper passing through the printing section 3 is reversed, and the reference side is also reversed. The left and right sides are opposite. Therefore, the print information given to the print head 2 is switched as follows in response to the forward/reverse conversion of the tractor device 6.

As an example in the case where the print head 2 is of a serial type mounted on a carrier that runs in the paper width direction, as shown in FIGS. Both tractor units 6162 are set so as to be movable in the width direction of the paper, and the tractor unit 61 is set at the left end reference position during pull feeding, the tractor unit 62 is set at the right end reference position during push feed, and the other tractor unit is set so as to be movable in the paper width direction. Set it according to the paper width.

Then, during press feeding, the dot pattern output from the character generator 11 is reversed only up and down through a dot inversion circuit 42, and is applied to the row memory 43.
Furthermore, the scanning direction of the print head 2 is reversed to the scanning direction during tension feeding. That is, when the left side of the paper is used as a reference for tension feeding, the output pattern of the character generator 41 is filled in from the left side of the line memory 43 as it is, and the line memory 4 is filled in while the print head 2 is running from left to right.
3 is read from left to right and printed, but when 1 is pressed and fed, the vertically inverted pattern is filled in the line memory 43 from the left, and the print head 2 is read from right to left while printing. 43 is read from left to right and printed. Generally, the print head 2 performs reciprocating printing, but when the print head 2 runs in the opposite direction to the above, the row memory 4
The read state of No. 3 is shown by the imaginary line in the figure. That is, the output pattern of the character generator 41 is vertically reversed by the dot reversing circuit 42, and then the print head 2
By reversing the scanning direction of the image, printing is performed by reversing the image horizontally.

As an alternative means, as shown in FIG. 9, a two-dimensional memory 4 that stores printing information for one page of printing paper
It is also possible to employ means for changing the direction of reading information from the memory in conjunction with the forward and reverse rotation of the tractor device 6. In Fig. 9, the solid line indicates the state during tension feeding, ! ! The image line shows the state during push-feeding.

FIG. 11 shows the system configuration of the printer device according to the embodiment.

In the figure, 100 is a printer device 1101 is a main unit such as a host, 102 is a human data processing unit, 103 is a row memory of a print buffer, 104 is a driver circuit, 105
106 is a reversal control section, 106 is a dot pattern reversal section, and 107 is a reversal control section.
108 is a feeding mode switch, and 109 is a mechanism drive unit.

The input data processing section 102 analyzes the command print data supplied from the main unit 101, converts the print data into a dot pattern using a character generator, and stores it in the one-line memory 103.

The tone pattern data stored in the row memory 103 is first sequentially read out to the driver circuit 104.

The print head 2 is driven.

There are two feeding modes, a pulling feeding mode and a pushing feeding mode, which are set by a feeding mode designation command given from the feeding mode switch 108 or the main device 101.

The reverse rotation control unit 105 is in the tension feeding mode.

The dot pattern reversing section 106 and the reversing output section 107 are not activated, 1 printing is performed without reversing as explained in FIG. 107 to function,
1 row memory with vertically inverted dot pattern, respectively 103
The access direction is reversed to perform reverse printing as explained in FIG. 8(b).

The reversal control unit 105 further informs the mechanism drive unit 109 of the correct rotational direction of the tractor device and the platen and the state of contact and separation for the pair of rollers in each of the pull feeding mode and the push feeding mode. give instructions.

The mechanism drive unit 109 reverses the rotation of the tractor device and the platen according to instructions from the Itl+ control unit 105.

Mechanical means such as motors that drive each element of the roller pair are controlled to perform two desired operations.

Next, the operation of the embodiment apparatus shown in FIG. 11 will be explained with reference to the flow shown in FIG. 12 and the operation example shown in FIG. 13.

Note that the procedure of the following explanation follows the reference numbers ``■'' to ``■'' of each step shown in the flow of FIG. 12.

(2) Data output from the main device 101 is temporarily stored in the data reception buffer of the printer device 100.

(2) The reverse rotation control unit 105 identifies the type of the specified feeding mode from the setting state of the feeding mode switch 108 or the contents of the feeding mode designation command sent from the main unit 101. Next, in the case of the pull feeding mode, execute step 1 (2), and in the case of the push feeding mode, execute the step (2).

■ In the pull feeding mode, data from one main unit 101 is retrieved from the data receiving buffer (represented simply as a buffer in the figure) in the order of input, and is sent to a character generator (C,
G,) is converted into a dot pattern and expanded as it is in the row memory 103. Figure 13(a) shows the row memory 10 when the data is "123 A, B C".
The contents of 3 are shown below.

■ In push feed mode, data from one main unit 101 is taken out from the data reception buffer in the order of input, converted into a dot pattern by a character generator (C, G,), and then converted into a dot pattern inverter 106.
Flip it upside down.

Expand to row memory 103. Figure 13(b) shows the row memory in which the vertically inverted dot pattern is stored.
The contents of 103 are shown below.

■ Determine the print position for each feeding mode based on the left side when viewed from the front (front) of the printer device. 13th
In the example shown in Figure (c), in the case of the pull feeding mode, for example, in a printer device where the maximum printing point is 2176 points, the printing position for the data '123ABC' is between the left point P and the right point P2. On the other hand, in the push feed mode, the same data is printed between the right point P and the left point P4.In this case, P.

P4 is a linear formula % formula % in the 2-inverting output section 107 Calculated using

■ In each case of the pull feeding mode and the push feeding mode, read out the tondo pattern data developed in the one-line memory 103 from the beginning.

Only in the push-feed mode, the printing position is converted by the reversing output unit 107 and is supplied to the driver circuit 104. FIG. 13(d) shows the correspondence between the line memory and printing position in the case of the pull feeding mode, and FIG. 13(e) shows the correspondence between the line memory and the printing position in the case of the push feeding mode. It shows.

In this manner, the driver circuit 104 drives the print head and performs printing. Next, if paper feeding is required for a paper feed change operation, etc., execute steps 1 to 2.

■ In the case of pull feeding mode, execute ■ and ■, and in the case of push feeding mode, execute 0. ■Execute.

■ Move roller pair 4 up (separated).

■ Towards the rear of the printer device (toward the right in Figure 1).

Feed paper.

0 Roller pair 4 is brought down (into contact).

■ Toward the front of the printer device (toward the left in Figure 1).

Feed paper.

〔Effect of the invention〕

According to the device of the present invention described above, it is possible to perform both push-feeding and pull-feeding of continuous sheets.
Furthermore, it is also possible to print paper sheets.

Furthermore, since the paper paths during each of these processes can all be formed in a substantially linear shape, restrictions on print processing and paper used in conventional printer devices are removed, and a printer device capable of an extremely wide range of printing processing is provided. can. Furthermore, since an additional feeding force is applied to the paper by the pair of rollers disposed in the immediate vicinity of the printing section when the continuous paper is forced to be fed, the line feed accuracy during push-feeding is improved. Also, the second
If the left side of the figure or figure 10 is the front side of the device, processing of printed paper such as 1-inch cutting during push-in continuous paper processing, loading operations of cut paper and pull continuous paper, etc. will all be performed on the near side of the device. can be done with.

The operability of the device is improved and the workload of the operator is reduced.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the basic configuration of the present invention. FIGS. 2 to 8 are diagrams showing a first embodiment of the present invention. FIG. 2 is a side view showing the push-feed state of continuous paper, FIG. 3 is a side view showing the pull-feed state, FIG. 4 is a side view showing the abutting and separating mechanism of the roller pair, and FIGS. Fig. 6 is an explanatory diagram showing its operation, Fig. 7 is an explanatory diagram showing printing type B during pull feeding and push feeding, and Fig. 8 is an explanatory diagram showing the means for reversing information given to the print head. be. FIG. 9 is an explanatory diagram showing other means that can be substituted for the means shown in FIG.
0 is a side view showing the second embodiment, FIG. 11 is a system configuration diagram of a printer device according to the first embodiment of the present invention, and FIG. 12 is a flow diagram for explaining the operation of the configuration of FIG. 11. FIG. 13 is an explanatory diagram of the operating side, and FIG. 14 is a side view showing an example of a conventional printer device. 1 Nibraten 2: Print head 3: Printing section 4, 5; Roller pair 6: Tractor device 50: Continuous paper 105: Reverse control section 108: Feeding mode switch Patent applicant: Utsukushi Denshi Kogyo Co., Ltd. Representative Patent Attorney For Hase Car seat (2 people outside) 81 Figure, =-------4 Art 7 Ward No. 2 [21! 3rd Figure 4 Figure 8 [D (C1) (b) 921 1-61111---No. 10 Step 4? Sucha 12 Figure 13

Claims (1)

[Scope of Claims] A printing section (3) formed by a printing head (2) and a platen (1) facing each other, a tractor device (6), and a tractor device (6) with at least the printing section (3) in between. ) and a pair of paper feed rollers (4) arranged on opposite sides and capable of abutting and separating, and in which a path for paper passing through the printing section (3) is formed on substantially one plane, Furthermore, a reversal control section (105) is provided, and the reversal control section (105) is provided.
According to the instructions, the platen (105) switches between two paper feeding modes, a paper pull feeding mode and a push feeding mode, and sets the platen (105) according to each feeding mode.
) and the tractor device (6), and especially in the push-feed mode, the pair of paper feed rollers (4) are brought into contact with each other and rotated so as to apply a tensile force to the paper, and the printing A printer device characterized in that dot pattern data supplied to a head (2) is inverted and controlled so as to be printed in the opposite direction to the printing direction in the pull feeding mode.