JPS5850556A - Recording apparatus for both sides of paper - Google Patents

Abstract

PURPOSE:To enable recording papers of first recorded papers and second recorded papers to be separated and arranged in the direction and in the faces of the paper, by placing the first papers recorded by moving an original forward and reading the lower face, and the second papers recorded by moving the original backward and reading the upper face, on each separate discharge tray. CONSTITUTION:A sheet of original is moved forward and its underside image is read with a read unit 20 at a position A on an original conveyance locus, then moved backward, and its upside image is read at a position B with a read unit 21. Recording is carried out on recording paper 50 or 52 fed from a cassette 51 or 53. At that time, the recording paper 50 recorded when the original is moved forward is sent to a first discharge tray 91 and the paper 52 recorded when backward is sent to a second discharge tray 92 by changing over an upper claw 100 to or from the position of a broken line from or to that of a broken line. The papers are stacked on each separate tray with the direction and the faces exactly accorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a double-sided recording device that records on both sides of a recording sheet, and relates to a double-sided recording device that records several sheets of paper by moving #R and backward reading.

Previously, the manuscript was moved back and forth and #i! I! A double-sided recording device has been proposed that can record an arbitrary number of double-sided sheets without a special memory, by alternately performing forward-moving continuous reading and double-sided recording, which requires backward movement and reading. However, since such conventional devices are not equipped with a paper ejection tray for storing recording paper on which duplex printing has been performed, the recording paper is ejected with each sheet having a different warp direction. There was an inconvenience that they were deposited on the tray.

An object of the present invention is to eliminate such conventional drawbacks and to provide a double-sided recording device in which the recording paper can be obtained in a state in which the directions and images are aligned during forward reading and backward reading. be.

Hereinafter, the present invention will be described in detail with reference to the drawings.

#! The figure shows the internal structure of both RFI recording devices showing one embodiment of the present invention, and first, the reading means shown in the upper part of the figure will be explained. In the figure, l is seat, t state bucket, ko,
'J, l, j, 4'', ? feeds the original l with a reversible 'feeding port' roller. t is the original feeding tray,
t is a platen with a lower surface a7 provided on the original feeding trajectory, and the lower surface of the original l is read at this platen 90 position *A. IO is an upper surface reading platen provided on the original feeding trajectory. , the position of this platen 70 is BK [
Read the top side of document l. l/, /co move to bring the original 7 into a well-focused image using the original feeding guide. /J,
/tei and /j are photocoupler light-emitting elements that detect the position of the original; /4, /ri, and /l are also photocoupler light-receiving elements; /1 is a document tray that stores the original l that has been read. Reference numeral J denotes a document lower surface reading unit installed below the downward reading platen t. No. 2 is an original seed upper surface reading unit installed above the upper surface platen 70. -, 2J are document layer 8A lamps, O is a folding lamp, I and K are imaging lenses, and C and KOTA are one-dimensional image sensors consisting of a large number of light-receiving elements arranged one-dimensionally. Uses twin image senna. Such an image sensor
, 9 converts the incident 1iliii1#2 light into electrical 1S, electrically processes the electrical signal in a processing circuit (not shown), and records it on a recording paper by a recording means to be described later.

The reading operation will be explained. When a sheet-shaped original / is inserted toward the feeding roller J, the insertion of the original 1 is detected by a photocoupler consisting of a light emitting element /3 and a light receiving element 16, and the rotation of the feeding roller tJeamje6 is started. The document L is fed by a rollercoaster.

The document is fed in the direction of the arrow while being held by J, and enters between the lower surface reading platen 9 and the document feed guide L. At this time, the leading edge of the document l is detected by a photocoupler consisting of a light emitting element/da and a light receiving element 17, and the detection output is used as a synchronization signal during recording to be described later.

First, the lower surface t! of the lower surface reading platen t provided on the document feeding locus! t, JIi! At position A, the lower surface of document l is read by the reading unit. Next, the document/is introduced between the platen io and the guides l-h by the feeding rollers lI,j,
The upper surface of the original I is read by the reading unit 1 at the upper surface reading position B of the upper surface reading platen io. After further feeding the document l and completing the scanning of both the top and bottom sides, the light emitting element /j
, a photocoupler consisting of a light receiving element/I detects the trailing edge of the document l. Here, if reading scanning is to be performed on the original l only seven times, the original l is ejected from the original tray 1ty with seven scans left.

However, if multiple reading scans are requested for the original l, the outputs of the photocouplers ts and it will cause the feeding rollerco, 3. Da, j, A,'? and move the document l in the opposite direction along the feeding path. Here, at the reading position B, the image on the document I is read by the upper and lower surfaces of the JIliK reading unit x. When the above uimm removal is completed and the photocoupler /$, /1 detects the trailing edge of the document 7 in the moving direction, the feeding roller core a'M''
# ' e ' e starts normal rotation. In the manner described above, the feed rollers * J e ” j j O6, 7 repeat forward and reverse rotations according to the number of reading scans, and finally eject the original l onto the original tray/9. 11! Regardless of whether the number of times the document is taken is an even number or an odd number, the document tray/9 top & C is always on.
Discharge jlKIi/.

Next, to explain about the [IIIL unit〃, KO/], the lower surface reading unit) J irradiates the image of this document IIki at the reading position M from the lamp JJK, and uses the reflected light to create an optical path composed of the mirror KODA and the lens 26. Through,
An image is formed on the COD line image sensor X. The image sensor obtains time-series image signals according to the incident light energy. Top #! The operation of the taking unit 1 is also exactly the same as above.

Next, a recording means that performs recording using the image signal from the above-mentioned reading means will be explained.

In the figure, jO is the double-sided recording paper, and si is the recording paper j
0, J is a single-sided recording paper, 53 is a single-sided recording paper cassette that stores the recording paper S, 541 is a paper feed roller that feeds the double-sided recording paper SO, SS is a paper feed roller that feeds 5 single-sided recording papers, S6
, 5 is the registration roller, Hotokabuj/l,
/? Or, it is rotated in synchronization with the detection signals of /j and /l to align the image recording position. -3t, j?
, 40°41, 6ko, 43, 441
, At , 4ri , At , 6
9, 70, ri/,? - is a 5fM feed roller that transports the recording paper Sθ or Sco, 73°741;
? j, 94, 7ri,')t
, ? 9, 10, l/, f
fko, 13, fda.

14 is a conveyance guide for smoothly conveying the recording paper V or S, and tt, tz, gy are conveyance belts as means for conveying the recording paper j0 or 5.

90 is a single-sided paper output tray that stores the single-sided recording paper S after recording has been completed, and 9/ is a double-sided paper tray that stores the double-sided recording paper that has been recorded in the forward direction (in the direction of the arrow in the drawing). FJ is the first double-sided paper output tray that stores the double-sided recording paper SO recorded by double-sided heaving in the opposite direction.

ta, Deda is an inkjet recording head, and CCD line image sensor Jj, J? Output II! 11g
A reproduced image corresponding to one signal is formed on recording paper SO or horizontally. This recording head? J.? 1 is a so-called full multi-head, which is arranged in a full line in a direction substantially perpendicular to the axillary feeding direction of recording paper V or J, for example. ? j, 94 is a suction fan (starting on #ht,
), "e" is a porous guide plate, and the suction fan is used to guide the recording paper SO or S from the 94K? ?
.

91 to maintain the flatness of the recording paper ``so'' or ``j-'' and maintain the optimum distance between the recording paper ``so'' or ``sco'' and the recording blade 3 or . 991m is the above-mentioned tray to,
Ti.

The transport path switching claw (selector finger) that switches the transport path to 9J, iot, is a bell body that houses the above-mentioned two-take means and recording means.

The recording operation of the recording apparatus configured as above 5 will be explained. First, in the case of inside-side recording, when the operator presses a selection key (not shown) to instruct double-sided recording, the lower switching claw 9? moves to the position indicated by the dashed line in the figure. Insert original l into photocoupler/J
, /4 are detected, the paper feed roller sy and transport roller It, j9 rotate, and the double-sided recording paper SO is moved from the cassette si to the guides 7.7, 71I, ? , t, 76, and then transported to the registration rollers jA, S.

When the photocube) /l, /7 detects the tip of the original a/, the registration roller moves in synchronization with the detection signal! f4,
j7 rotates, and the recording paper go moves between the guide plate 9 and the guide t.
/ , f are conveyed through the space. Here, in the recording apparatus C, the recording head 93 driven by the image signal output from the image sensor d for reading the lower surface reproduces and records the image of the lower surface of the original onto the first surface of the recording paper Sθ.

Suction fan at this time? Since the recording paper jO is sucked from jK through the porous guide plate t7, the flatness of the recording paper Sθ at the recording position is maintained, and the distance between the recording head 93 and the recording paper SO is also kept constant. . The recording paper SO is conveyed by six conveyance rollers and AJ until it reaches the recording position DK. In the position, image sensor 2 for top reading
The recording head 9 driven by the image signal output from the recording head 9 reproduces and records the upper surface image of the original on the first side of the recording paper j (7.
The distance between them and the distance between recording devices C and D are set to be equal. Therefore, a memory device for temporarily storing the image signal output of each image sensor is used. When the original l is fed and read in the direction of the arrow in the figure, the first switching claw m is at the position shown by the solid line in the figure, so the first side and the recording paper SO on which the first side has been recorded are The conveyor belt Ig and the first double-sided paper discharge tray/&C second rj along the bent guide is.
Discharge with B facing up.

The above is the operation of the recording apparatus when the reading means reads the original l in forward motion. Next, an explanation will be given of the operation of the recording means when the reading means performs double-sided recording with X and % double-sided recording.

During the above-mentioned a# reading, when the leading edge of the document I is detected by the photocouplers /j, /IWC, the paper feed roller j-tei and the transport roller 1K, ! Rotate 9 and place the first double-sided recording paper jO on the registration roller! 4, j? Transport it to. Photocouplers /k, /l at the rear end of document l
When the force is detected, the paper feed roller 3. Da.

! , 4.7 starts the reversal. At the same time, the upper switching claw m moves to the position indicated by the broken line in the figure, and K, photocoupler /3,
Registration roller 34./l in synchronization with the trailing edge detection signal.
n rotates and sends out recording paper 0. The recording paper 5θ records the upper surface image of the original l on the first side of the recording paper 50 at the recording position C. In history, recording position D [in manuscript 7
Record the bottom image on the first side of the recording paper. That is, the connection relationship between each recording head 93, 9da and each sensor head and head is changed depending on the trailing edge detection signal of the photocouplers /j and /l that detect the switching from forward reading to backward reading. In contrast, the recording head J receives the signal from the sensor 9, and the recording head w41 receives the signal from the sensor and forms a reproduced image. Similarly, when switching from backward reading to forward reading, photocoupler /4I, /7
Each recording head 93. The connection relationships between the hoko, each of the sensors, and -9 return to the initial state described above.

Here, at the time of forward # reading, the letters rEJ are written on the first side Sθ-7 of the recording paper 50, and the letters rFJ are written on the second side 5O-1 of the recording paper 50.
) e (b) If the data is recorded as shown in K, the first side and Jth side of the recording paper jO will have the image shown in Figure 3 (a) during backward reading.
.

(b) As shown in &C, the characters rFJ and rEJ are recorded upside down. Therefore, when the recording paper Sθ during backward scanning is ejected from the first duplex paper tray (1mth paper tray) 91VC in the same manner as during forward scanning, the recording paper S
The O sheets are piled up on the paper discharge tray 1/ with each sheet having a different surface and direction.

Therefore, in this embodiment, in order to eject the recording paper jθ during backward scanning, the upper switching claw is moved to the position shown by the broken line in the figure, and the conveyance path is switched and the recording paper is ejected using another conveyance belt it. Convey the recording paper SO, change the direction of the recording paper SO from the bent part of the bent guide t6, and transfer it to the first duplex paper output tray (the first
The recording paper SO is discharged into the paper tray (m paper tray) 92 with its first side facing up. With this configuration, the recording paper SO during forward #IJ#It reading is ejected onto the first paper ejection tray 9/, and the recording paper SO during backward reading is ejected onto the 1st m paper tray 9/. . Therefore, the recording paper S when reading the forward MJ and the backward MJ.
O is for each paper output tray with the direction and surface aligned. can be deposited on 2.

Next, when it is necessary to record only one side, the lower switching claw 99 is simultaneously moved and set to the solid line position fft in the figure in response to a one-sided recording instruction by the miller. When the photocouplers /J, /4 detect the insertion of the original /, the paper feed roller SS for single-sided recording and the transport roller (BO), 4i for single-sided recording rotate, and the paper for single-sided recording is pulled out from the cassette JJ and placed in the guide 7.
? , n, 79. KOK bath is a registration roller 4,57
Transport to. Photocoupler/4! , /'7 detects the leading edge of the original l, the registration rollers 16 and 17 rotate in synchronization with the detection signal, and the recording paper S is sent out.

At the recording position C, the recording head t3 prints the lower side II of the document! II Dan is reproduced and recorded on the first side of recording paper Sλ.

Here, the switching claw 99 is at the recording position point C, the conveyance roller 6,
63 and the combination feed pel) provided above f7, and the switching claw 9
9 is set to wK at the *- mark in the figure, the recording position direction is closed, and the transport bell) direction is open. When transported by the transport roller 43, the recording paper S is transported by the transport bell)
17 and guides tJKG, the paper is discharged onto the external paper discharge tray 9θ with its first surface facing upward.

In this case, set si for double-sided recording paper V and cassettes for single-sided recording paper jJ), and set each cassette separately.
Recording paper from 3/, 53, 50. ! Since the paper source for - can be switched as desired, it is possible to
and double-sided recording paper Sθ can be easily used. Therefore, when performing single-sided recording, relatively inexpensive single-sided recording paper S can be used for recording, resulting in a reduction in running costs.

Note that when performing backward motion recording in single-sided recording, when the trailing edge of the document 7 is detected by the photocouplers /J, /l: during forward motion reading, K is detected, and when each of the rollers ~7 is reversed, [J
Feed the first sheet of recording paper S- and press the register □ troller &&
, ! f'l aC Registration is the same as double-sided recording, but the registration of the five recording sheets using the registration rows 2 S& and n is canceled as follows.

In other words, the original l moves back and the photocoupler/! ,,/1
The registration is canceled after a predetermined time has elapsed since the rear m (the leading edge in the document reading direction) of the document l is detected.

When awakening, in the case of single-sided recording, the document is read at position A & fm even during return movement, so the rear edge of the document is in front of position A and corresponds to the distance between photocoupler /j, 1g and 1iLB. When the desired position is reached, the resist is released.

FIG. 1 is a block diagram showing an example of a control circuit of the double-sided recording apparatus of the present invention shown in FIG. Here, //9 is a control circuit, which has, for example, a one-chip microcomputer storing a control operation program, and has a single-sided/screen recording switching switch and light-receiving elements /A, /7, .
/II: The document detection signal from 4 described below
! Control the r type circuit. /2/ is a switching claw drive circuit, and the lower switching claw ? 9 and the setting position of the upper switching claw m. /22 is a normal rotation clutch drive circuit, which rotates the document feed roller 7 in the normal direction, and /23 is a reverse clutch drive circuit, which rotates the feed roller 7 in the reverse direction. Nokotei is a registration roller s4
．． 5 is a registration roller drive circuit that drives and controls the recording paper feed rollers s4I and 5.

Also, /Koro is a clock generator, Noko? , / is an analog-to-digital converter (A/D converter) that operates in synchronization with its clock generator No. 6, and the former two converters /
27 converts the output signal of the image sensor for reading the bottom surface into a ko-value image signal, and converts the ko-value signal to a multiplexer saw! , output to /JO. The latter φ converter 7.2g converts the output signal of the image sensor 9 for top surface reading into a value image signal, and converts the value signal to the multiplexer saw 9.
．． /JOK output.

Is /3/ the recording head? The head drive circuit that drives No. 3, No. 32 is the recording head? This is a head drive circuit that drives the head.

To explain the case of double-sided recording, the reading section is
When reading a book, the input signal from the multiplexer/converter/core is sent to the head drive circuit/, 7/
When VC is output and backward reading is in progress, the output of the transducer IH is sent to the above-mentioned drive circuit /3/.

Similarly, in the case of one forward threading, the multiplexer/30 is φ
The input signal of the transducer/cow shell is outputted to the head drive circuit 13 during double-motion reading. In addition, in the case of single-sided recording, the multiplexer/
Jθ is at rest, and the multiplexer outputs the output of the converter during backward reading to the drive circuit /J/.

As described above, in this embodiment, the reading means that moves and intersects the original 7 is the original 111! The detection means is, iz detects that the extraction is completed, and the detection means 7k.

The feeding direction of the feeding means for feeding cool air is reversed in accordance with the output of /S. Therefore, there is no need to manually insert the same 1jc tachibana into the reading unit many times, and the operation becomes simple and the reading operation can be made faster. On the other hand, the double-sided recording device of the present invention is not limited to the above-mentioned sheet type reading mechanism, but is applicable to, for example, a book type Ryo 414SS mechanism. Further, although a photocoupler consisting of a light emitting element and a light receiving element is used as a detection means, other detectors such as a Hall element or a microswitch may also be used.

As explained above, according to the present invention, the second paper output tray stores the recording paper recorded by forward scanning, and the first paper output tray stores the recording paper recorded by backward scanning. The above-mentioned 1st. Since the first paper ejection tray is selectively switched and used, the top and bottom of the recorded recording paper are aligned, and operations such as page alignment after recording are facilitated.

[Brief explanation of the drawing]

FIG. 7 is a configuration diagram of a double-sided recording device showing an example of the present invention, FIGS. ) and (b) are diagrams showing an example of the recording state of the recording paper during conventional backward reading, and FIG. 1 is a block diagram showing an example of the control circuit of the double-sided recording apparatus of FIG. /...Original, λ~ri...Feed roller,
t...Original feeding table, TS...Bottom surface reading platen, 10...Top surface reading platen, 7ノ, /λ...Document feeding guide, 73~/j...-Photocoupler light emitting element, 76 〜lto・
・Photocoupler light receiving element, /9...Original tray, J...Original bottom side reading unit, -ka...Document top side reading unit, Q2, u...Original illumination lamp, Review, O...Folding mirror , core...imaging lens, correction...CCD line image sensor, Sθ...
Double-sided recording paper, S/...Double-sided recording paper cassette 4 Sco...Single-sided recording paper, S3...Single-sided recording paper cassette, sy...Double-sided paper feed roller, ss... Single-sided paper feed roller! r4, j7... Registration roller, Sza~sha, 4
7-7...Transportation-ra, 73-16...Transportation guide, t7-t9...Transportation belt, DE0...Single-sided paper output tray, 91...7th double-sided paper Paper output tray, 9 pieces...First double-sided paper output tray, DeJ, 91...Inkjet recording sickle head, light, 9 pieces...Suction fan (suction means), differential, q piece...Porous Guide plate, q? , m...transport path switching claw, 70...housing, //? ...control circuit,
/-〇・・・Single-sided/Double-sided recording switch, l-cono...
・Switching pawl drive circuit, l here...forward rotation clutch drive circuit, l here...reverse clutch drive circuit, l coco... registration roller drive circuit, l here... paper feed roller drive circuit, / Todoroki...Clock generator, /2ri, lkot...A/D converter, lko9,
/30...Multiplexer, /J/, /, 7 pieces
...Head drive circuit. Figure 1 Figure 4 Figure 2 (0) 3rd ((Z) (b) Figure (b)

Claims (1)

[Claims] In a double-sided recording device that reproduces and records the -U of an original on both sides of a recording paper, the original is relatively moved back and forth to reproduce the same image at least t! times. jr, a reading means for reading, a recording means for recording image information read by the reading means on both sides of the recording paper during both reciprocating movements, and storing the recording paper on which recording was performed during the reciprocating movement. A double-sided recording device characterized by comprising a first paper ejection means and a second paper ejection means for storing the recording paper on which recording was performed during the backward movement.