JPS61134284A - Recorder - Google Patents

Abstract

PURPOSE:To allow perfecting copying to be performed under a simple and low cost structure by pairing a driven roller and a paper ejector roller mounted on a driving shaft and a driven roller on the driving shaft as well as a paper ejector roller which guides recording paper to a paper insertion inlet side and the paper ejector roller on the driving shaft with a driven roller which guides recording paper to a paper tray side. CONSTITUTION:Recording paper 6 is set in such a way that its front 6a may become a recording surface during the first pass. A bail roller 9 is pressed against a platen 3 and a driving shaft 10 is driven to rotate counter-clockwise against the clockwise rotation of the platen 3. The tip of the recording paper 6 is guided to a contact point of the platen 3 with the bail roller 9, and then is lifted up by rotation of a paper ejector roller 13 after recoding, being led to a paper insertion inlet side. At the same time, the recording paper 6 is set so that its rear 6b may become a recoding surface. During the second pass, the bail roller 9 is allowed to deviate from a position above the platen 3 and the driving shaft 10 to be driven to rotate in the same clockwise direction as the platen 3. The tip of the recording paper 6 passes a contact point of a paper ejector roller 12 with a driven roller 14 for the second pass and then is squeezed into a paper tray 20.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a recording device such as a grid/tar, and more particularly to a recording device suitable for use as a wargro printer that performs cut sheet recording.

[Prior art]

In recent years, just as there has been a demand for double-sided copying in copying machines, there has also been a demand for double-sided recording in recording devices such as printers and printers.

However, most of the conventional recording apparatuses, particularly in the case of paper grinders which mainly perform cut sheet recording, are constructed so that two recordings are performed only on one side of the recording paper.

In addition, a double-sided printing system (Reference No. 1) has been proposed in the past that records on both sides of recording paper, but this device uses one recording head, one platen, and other parts for the front side and one for the back side. This is done by arranging the parts one by one, which increases the number of parts and makes the device smaller! coarse and large),
The cost was high.

〔the purpose〕

SUMMARY OF THE INVENTION An object of the present invention was made in view of the above-mentioned drawbacks, and it is an object of the present invention to provide a recording device capable of making double-sided copies with a simple and inexpensive configuration.

[Summary]

The present invention includes a drive shaft that is disposed above the platen and is driven in a forward and reverse manner, and a driven shaft o-
9 and paper ejection roller 2 and 1 A paper ejection roller that is paired with the driven roller of the drive shaft and guides the recording paper toward the paper insertion slot; The present invention is configured to be equipped with a driven roller that guides the peno arm to the tray side, thereby achieving the above object. [Embodiment] Hereinafter, the present invention will be described in detail with reference to FIGS. 1 and 2. ◎ Fig. 1 is a diagram showing a grainter for Wargross which is an embodiment of the present invention (such a recording device). A pair of feet q-'') 4 and 5 are rotatably disposed below the platen 3.

These feed rollers 4 and 5 are always in pressure contact with the platen 30 surface! 5, the recording paper 6t is driven by the rotation of the platen 3 and transported in a predetermined direction. Further, a tenth paper guide plate 7 is arranged at a predetermined distance from the platen 3 on the front side of the platen 3 (left t11 in the figure), and this first paper guide plate 7 is attached to the middle paper rear 8. has been done. Although not shown in the drawings, the carrier 8 is equipped with a recording head, a removable cassette, and the like.

Further, a pail roller 9 is disposed on the upper front side of the platen 3 (upper left side in the figure), and this pail 617-2 is pressed to a gran/3 by a not-shown brush movement source. (solid line position) or detachment (dashed line position). Furthermore, a drive shaft 10 is disposed above the platen 3 and is driven in forward and reverse directions (clockwise direction, counterclockwise direction) by a drive source 10a provided separately from the platen drive source (not shown). has been done. As shown in detail in FIG. 2, this drive shaft 10 includes a driven cooler for the first/gas
11 and the second pass paper ejection roller 12 are provided alternately with slight deviations in the axial direction of the drive shaft 10, and the first pass driven roller 211 and the first pass paper ejection roller 213 are arranged alternately. (joined in pairs), and second pass O paper ejection cooker 1
2 is connected in pair with a driven row 214 for the second noyas. That is, a pair of shafts 15 and 16 are provided so as to sandwich the drive shaft 10 and be parallel to the drive shaft 10, and the shaft 15 corresponds to the driven roller 11 for the first nozzle. At the position, there is a paper output α-213 for the first pass.
, a driven roller 14 for the second arm is provided on the other shaft 16 at a position corresponding to the discharge row 'y12 for the second arm. Furthermore, a plurality of teeth 17, 18 are formed at regular intervals in the circumferential direction on one end of each of the paper ejection rollers 12, 13, as shown in detail in FIG. The recording paper 6 is attached to this tooth part 1.
7 and 17. The rear end is fitted between 18 and 18, and is lifted up and rotated by a certain angle. The shafts 15 and 16 are connected to the driven roller 11 for the first pass and the paper ejection roller 13 for the first pass, as well as the paper ejection row 212 for the second pass and the 27th pass. Depending on the connection relationship with the driven row 214, the drive shaft 10 is rotated to follow the rotation of the drive shaft 10.

Furthermore, it is said that a bearing 19 is fitted to the drive shaft 10, and a tray 20 is mounted on the outer periphery of the bearing 19.
is rotatably mounted. .

This paper tray 20 is for stacking the recording paper 6 after the 2/4th slot, and is prevented from falling toward the front m (clockwise in Fig. 1) by a stop horn 421. In addition, a paper press plate 22 is rotatably attached to the shaft 16), and this paper press plate 22 allows the beno! - The recording paper 6 stacked on the tray 20 is prevented from falling over.

Further, on the upper side of the platen 3, a pair of second gas passages 23t are formed. Third guide plate 24.2
5 is provided, and the recording paper 6 is passed through this dedicated passage 23t-
The paper is guided between the paper discharge row 'y12 for the 2/4' space and the driven roller 14 for the second space.

Next, it was configured as 11 or more! The function of the linter will be explained. First, during the first pass, the recording paper 6 is set so that its front surface 6a becomes the recording surface, as shown by the solid line in FIG.

Note that when inserting and setting the recording paper 6t, the carrier 8 is positioned at the center of the paper width, and the paper is fed along the tenth paper guide plate 7. Further, at this time, the pail roller 9 is kept in a state S<state II shown by the solid line, in which it is pressed against the grana/3 at a constant pressure. Thereafter, the platen 3 is driven to rotate, and during this 1/4th step, the drive shaft 101 is driven to rotate counterclockwise relative to the clockwise rotation of the platen 3. Therefore, during this first step, the leading edge of the recording paper 6 passes between the platen 3 and the first paper guide plate 7, and then is guided to the joining point between the platen 3 and the pail C1-49. , After recording, it is 3. The paper is ejected onto the tangential line passing through the junction of the pail roller 9, and the paper is ejected onto the first pass ejection roller 13. It is guided to the junction of the driven rake 11. The recording paper 6 passes between the paper ejection roller 13 for the first arm and the driven roller 0-211, as shown by the dotted line M7Js/ in FIG. Paper discharge c! I have reached the position of -213! 1. The rear end part is fitted between the teeth 17 of the first north paper ejection roller 13, and is lifted and rotated by a certain angle by the rotation of the paper ejection roller 13, and is moved to the paper insertion slot side. be led to. When the recording paper 6 is set in this paper insertion slot, the recording paper 6 is set so that the back side 6b of the recording paper 6 becomes the recording surface.

Next, during the second gas cycle, the pail row 29 is previously moved from the solid line position on the platen 3 to the broken line position, and is rotated clockwise in the same manner as the drive shaft 10t-grana/3. Therefore, at this second eggplant time, since the pail roller 9 is in a state separated from the platen 3 in advance, the leading edge of the recording paper 6 is moved between the platen 3 and the first paper guide plate 7.
After passing between and the position of the small recording head, the two-dot chain appears in Figure 1! ! As shown in 6', the second. Third
A dedicated passage 23t- formed by paper guide plates 24 and 25
Passing through the paper discharge roller 12 for the second waste and the driven roller 214
reach the junction point. After passing this junction, the recording paper 6 is pushed into the paper tray 20 while being regulated by the paper presser plate 22, and finally the rear end of the recording paper 6 is pushed into the teeth of the paper ejection roller 12 for the second pass. lifted by part 18;
J/#) is loaded on Ray 20. During this second pass, the image is recorded on the back side 6b of the recording paper 6.

In particular, the control for performing double-sided recording in the configuration of the apparatus will be explained.

In FIG. 3, a host computer 41 and a central processing unit (CPU) 42 are connected by a control signal line S1, and a driver (drive circuit) 43 is connected to a control signal line S1 by the CPU 42.
2153t- controlled via.

The driver impeller 43 is a circuit that connects the print head 32, the step motor 34 for driving the carriage 8, and the DC motor 361E for anodizing the pail roller 9. That is, depending on the operation of the driver 43, the output from the source 49 is The current is passed through the power switch 48t to each heating element number 1, r:)T2, number 0 of the print head 32.
Ding 8. Each excitation phase Sφ1 of the carino drive motor 34...
・S$4゜Paper feed) Motor 35O each excitation phase Fφ1...F
The power is supplied to the motor 36 for the φ4° pale low 2 shift in a predetermined control manner.

The host computer 41 sends data such as characters on both sides of the print data 1! This is for sending to the linter.

The CPU 42 is built into the recording apparatus and controls the driver 43 based on data signals. This CP
U42 includes a ROM Ofa for printing operation control, a digit counter, and a dot force counter.

A RAM is provided with a determination area for civilian printing or back printing, and a glint cross 7a.

FIG. 4 is a diagram illustrating data (horizontal rows) and addresses (M column) that are sent to the recording device. In the illustrated example, each data is formed of 8 bits, and 5 pieces of data form 1. Text information is now provided. By sequentially transmitting these data to the recording device and sequentially driving the heating elements based on each data, letters, various characters, or figures as shown are printed in dots.

FIG. 5 is an explanatory diagram illustrating a recording state during surface printing, and desired characters are recorded by forming dots as shown in FIG. 4 while the print head 32 is running rightward.

FIG. 6 is an explanatory diagram illustrating the recording state when printing on the back side, and the print head 32 is moved rightward to form a dotted line as shown in FIG. 4.

For double-sided printing in FIGS. 5 and 6, the CPU
A desired number of lines or more for one line or more is temporarily stored in the printed path area of the RAM of 1, and the pattern information of the heating elements of the printing pad 32 is reversed between printing on the front side and printing on the back side. The CPU 42 controls the CPU 42 to do this.

FIG. 7 is a 7e+- chart illustrating an example of the actuator Nt suitable for implementing the double-sided printing method according to the present invention, and the operator Mt will be explained below based on this chart.

The printing operation starts with Stella 7'lOO, and step 10
Initialize the digit power 9 input to O with 1 and Stella f1
In step 02, it is determined whether printing is on the front side or the back side.

In the case of surface printing, the first aspect of the present invention is used in the snug 103.
The CPU 42 drives the DC motor 36t via the control signal line 53t in order to achieve a pale low of 0%;)9fCDOWN.

In step 104, the carriage 8 is driven to move the print head 32 to the left margin position.

Next, the printing force +7/min provided in the RAM is cleared and set to 0 (Stella 7''105).

Next, after confirming that the dot counter is not MAX on the Stella 7'106, the motor 34 for driving the carriage 8 is
Excitation phase Sφ1...Sφ4t- Excited to the right Stella 7'107) Printing/Gtanin (Dot/Rin) t-
In addition to setting for surface printing (step 108),
When the drive cycle (heat cycle) of the heat generating element is t-ON, the timer is started (step 110).

In this way, surface printing is performed, and in step 111, heating is performed until the timer exceeds the timer while checking whether or not it is over, and when the timer exceeds the time, the heating drive of the heating element is turned off (Stella 7" 112). ,
The print counter is incremented by 1 (step 113).

Repeating the operations from step 106 to step 113 above, print is executed until the print counter reaches MAX,
Print one entire line.

Also, in step 114, the digit counter incremented and stored by 1 mK after printing one line is stored in step 11.
In step 5, when the digit counter reaches MAX, printing on the front side of one page is finished (step 116).

Then, return to step 101 again and count the digit counter tR.
After EsET, proceed to 1 step f102, determine whether or not to print on the front side, and when printing on the front side, perform the above steps 7&:
To repeat again, if printing is not on the front side, printing on the back side is started.The CPU 42 drives the OC motor 36 to move the pail roller 9t-UP via the control signal MS3t-.

In step 118rc, the carriage 8 is driven to move the print head 32 to the left margin position.

Next, a print counter provided in the RAM is cleared and set to 0 (Stella 7''119)t''.

Next, in step 120, after confirming that the dot counter is not MAX, the carry/8 drive motor 34 is
Excitation phase Sφ1~00. Excite Sφ4 to the right and turn Stella 7'121) Print A' turn (dratonogter/) t
- In addition to setting for back side printing (step 122), the drive cycle (heat cycle) of the heating element is t-ON.
Step 123) A timer is started (Step 124).

In this way, printing is performed on the back side, and in step 125, heating is performed until the timer exceeds the timer while checking whether or not it is over, and when the timer exceeds the time, the heating drive of the heating element is turned OFF and the Stella 7" 126L printing kakunta is started. Advance by 1 (Stella 7'127).

Repeating the operations from step 120 to step f127 above, print is executed until the print counter reaches MAX,
Print one line.

Further, when the digit counter in the Stella f128 increments and stores by +1 every time printing of one line ends, and the digit counter reaches MAXK in the Stella f129, printing on the back side of one page ends (Stella 7'130).

In the above embodiments, only the printer was explained, but the same applies to a structure in which a cut sheet feeder is attached. In addition, in the structure in which this cut sheet feeder is installed, the drive shaft 10. Paper ejection row 213 for the first nose. Second pass paper ejection roller 12, driven rollers 1-1, 14. Axis 15.16, 2nd.
The third paper guide plate 24, 25, etc. can be attached to the cut sheet feeder side, and the drive source for the drive shaft 10 can also be provided on the cut sheet feeder side.

Furthermore, in the explanation of the above embodiment, the serial printer is
Although Embodiment S has been described, the present invention is not limited to this, and the present invention can also be applied to a line grinder having a line head.

Note that in the case where it is not desired to record on the back side of the recording paper 6 in the structure of the present invention, if the pail roller 9 is separated from the platen 3 in advance, the recording paper 6 @: paper tray 218! I can guide you.

〔effect〕

As explained above, according to the recording apparatus according to the present invention, there is no need for two platens or two recording heads as in the past, and therefore, the configuration is extremely simple and inexpensive compared to the past, and both sides can be printed on both sides. It has the excellent effect of being able to record.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing a Wargro printer which is an embodiment of a recording device according to the present invention, FIG. 2 is an enlarged perspective view showing a part of FIG. 1, and FIG. 3 is an embodiment of the present invention. 4 is an explanatory diagram illustrating the data and addresses in the control system of FIG. 3, and FIGS. 5 and 6 are recordings during front-side printing and back-side printing. FIG. 7, which is a diagram illustrating the state, is a chart 7a illustrating a suitable operating procedure for performing double-sided printing with the recording apparatus according to the present invention. 3...Platen, 6...Recording paper. 10... Drive shaft, 11.14... Driven roller. 12... Paper ejection roller for the second noyasu. 13... Paper output for the first slot o -9. 20 - 1 tray. Figure 1 Figure 2

Claims (1)

[Claims] a drive shaft disposed above the platen and driven in a forward and reverse manner; a driven roller and a paper ejection roller fixed to the drive shaft and slightly shifted in the axial direction of the drive shaft; A paper discharge roller that pairs with the driven roller of the drive shaft and guides the recording paper toward the paper insertion slot side, and a driven roller that pairs with the paper discharge roller of the drive shaft and guides the recording paper toward the paper tray side. A recording device characterized by: