JPH0458391B2 - - Google Patents

Abstract

PURPOSE:To record good pictures on OHP films by a method in which plural recorders are provided, and at least two or more recorders are driven for a light-transmissive recording medium, and many-time stricking is performed for the same picture element. CONSTITUTION:When a transparent resin film selection switch is pushed, film sheet in a cassette 1 is fed through a timing roller 7 and a feeding roller pair 8 by a supply roller 5. When the tip of the film sheet is detected by the first sensor 22, the second ink jet recording head 17 is driven, and printing is made. When the tip is likewise detected by the second sensor 23, reprinting is made on the same picture element by the first ink jet recording head 16, and the film sheet is discharged on a discharge tray 21 through roller pairs 9 and 20. When printing is made on usual papers, the first ink jet recording head 16 alone is driven. Regenerated pictures having practically sufficient transmission density can be obtained even on the light-transmissive recording medium.

Description

[Detailed Description of the Invention] [Technical Field] The present invention is suitable for not only reflective recording members but also translucent recording members used as original images for slides and overhead projectors (OHP). The present invention relates to a recording device capable of forming images.

[Prior Art] Recording devices, especially color graphic printers and video printers, use two types of printed matter: one for reflective observation drawn on ordinary plain paper, and the other for reflective observation drawn on so-called slides and transparent films such as OHP. There is a demand for something for observation.

If an attempt is made to print on a reflective recording member and a translucent recording member using the same printer, the following inconvenience will occur. That is,
Even if the same recording density is set and printed, due to the difference in the observation method for both materials, although the reflective recording material can be observed at a suitable density, the translucent recording material will have a different density. As a result, a high-quality printed image cannot be obtained.

[Purpose] The present invention has been made in view of the above points, and its purpose is to record high-quality images at an appropriate density for both recording materials for reflection observation and recording materials for transmission observation. The object of the present invention is to provide a recording device that can perform the following operations.

That is, the present invention provides a plurality of recording means that are arranged at a predetermined distance apart and record an image on a recording material, and a plurality of recording means arranged along a predetermined movement path for moving the recording material relative to the plurality of recording means. a moving means that relatively moves in a direction; and a signal generating means that generates a selection signal for a first recording mode corresponding to a recording material for reflection observation or a second recording mode corresponding to a recording material for transmission observation. , a control means for controlling the driving of the plurality of recording means in accordance with a selection signal generated from the signal generation means, and the control means controls M for one pixel on the recording material in the first recording mode.
(≧1) recording means are used, and when M=1, while the recording material is relatively moved along the moving path,
Recording is performed once for each pixel, and if M>1, recording is performed M times for each pixel while the recording material is relatively moved once along the moving path,
Furthermore, in the second recording mode, one
The method is characterized in that N (>M) recording means are used for each pixel, and N recordings are sequentially performed for each pixel while the recording material is relatively moved once along the movement path. The present invention provides a recording device.

[Example] The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an example of an inkjet printer to which the present invention is applied. In the figure, 1 is a cassette containing ordinary recording paper or transparent resin film. Reference numeral 5 denotes a supply roller that feeds recording paper or transparent resin film from inside the cassette. 7 is a pair of timing rollers, 8 and 9 are a pair of transport rollers, 1
Reference numerals 1, 12, 13, 14 and 15 constitute a conveyance path for recording paper or film, and conveyance guides for smooth conveyance. Reference numerals 16 and 17 designate first and second inkjet recording heads that are juxtaposed in the conveyance direction of the recording paper or film.

In this embodiment, the two recording heads are arranged so that the distance between the printing positions of the two recording heads is narrower than the minimum width of the recording member being conveyed.

Both inkjet recording heads 16 and 17 are supplied with aqueous ink from an ink reservoir (not shown), and print an image on recording paper or film conveyed from the cassette 1 based on an image signal supplied from an image reading means. Reproduce. Further, both recording heads are arranged, for example, in a full line in a direction perpendicular to the conveying direction of recording paper or film, that is, in a direction perpendicular to the plane of the paper in the drawing, and are configured as a so-called full multi-head.

Here, as will be described later, when the first recording mode suitable for recording on recording paper is specified, only the first inkjet recording head 16 is driven to perform recording on the recording material. However, when the second recording mode suitable for recording on film is designated, the first and second inkjet recording heads 1
6 and 17 are driven together to perform recording on the recording member.

18 is a suction fan, 19 is a porous guide plate, and this suction fan 18 sucks the recording paper or film to the guide plate 19 to maintain the flatness of the recording paper or film, and these recording members and the recording head 16, Maintain the best distance between you and 17. Reference numeral 20 denotes a pair of discharge rollers, and 21 denotes a discharge tray. After the recording paper or film is recorded by a recording head 16 or 17, it is conveyed to a pair of discharge rollers 20 via a pair of conveyance rollers 9. Further, the paper is discharged onto a discharge tray 21 via this pair of discharge rollers 20.

Reference numerals 22, 23, and 24 are first, second, and third sensors arranged on the conveyance path of the recording member for detecting the recording member. The first sensor 22 is disposed on the front side in the conveyance direction with respect to the recording position by the second inkjet recording head 17, and the drive of the recording head 17 is controlled by its detection output. Similarly,
The second sensor 23 is disposed in front of the first inkjet recording head 16, and the drive of the recording head 16 is controlled by its output. Further, the third sensor 24 is disposed on the front side in the conveying direction with respect to the pair of discharge rollers 20, and the driving of the pair of discharge rollers 20, the pair of conveyance rollers 9, etc. is controlled based on the detection output thereof.

Next, the first recording mode and the second recording mode will be explained with reference to FIG.

First, in FIG. 2A, S indicates a recording member, and D1, D2, and D3 indicate printing positions by both recording heads 16 and 17. In the first recording mode, only the recording head 16 is driven to eject ink droplets to each print position D1 to D3, and in the second
As shown in FIG. B, ink droplets 11 to 13 adhere to the recording member S.

On the other hand, in the second recording mode, both recording heads 16
and 17 are driven together, and ink droplets 11-13 are ejected from the recording head 16 overlapping the ink droplets 111-113 ejected from the recording head 17. As a result, the state shown in FIG. 2C is reached. In this way, ink is ejected twice (double ejecting) to the same pixel. According to this second recording mode, a reproduced image with a transmission density comparable to that of plain paper can be obtained for a film whose transmittance is so high that the image density would be insufficient with the same recording density as plain paper.

FIG. 3 shows the control system of the apparatus shown in FIG. 1, which performs image formation in the first and second recording modes in this manner. In the figure, 100 is a control circuit that controls the drive of each part, 101 is a read-only memory (ROM) that stores control programs, etc., and 102 is a random access memory (RAM) that can be read and written freely. 103 is an operation unit. This operation section includes a group of operation section switches for specifying normal printing conditions such as the number of copies to be printed and recorded image density, as well as first and second mode specification switches 104 for specifying the first recording mode and the second recording mode, respectively. -1,104
-2 are arranged, and a display section 105 for displaying recording conditions and the like is also arranged.

An input signal from the operating section 103 is supplied to the control section 100 via a data input/output buffer circuit 106. Further, the drive 107 is drive-controlled by the control circuit 100 via this buffer circuit, thereby controlling the display of the display section 105.

111 is a motor as a drive source for each roller, and 112 is a drive circuit that controls on/off of this motor 111. Reference numerals 113 to 116 designate motor clutches that transmit motor rotational force to the supply roller 5 and roller pairs 7, 8, 9, and 20, respectively, and are controlled on and off by drive circuits 118 to 121, respectively. 122 is a drive circuit that controls the suction fan 18 on and off. Control circuit 100
Based on the detection signals supplied from the sensors 22, 23, and 24 via the input buffer circuit 123, a drive signal is supplied to each drive circuit via the output buffer circuit 124 to control the drive of the conveyance system.

130 and 131 are the first and second
This is a drive circuit that drives the inkjet recording heads 16 and 17. Both drive circuits 130,1
31 is supplied with an image signal corresponding to image information read by an image reading means (not shown) via an image input interface 132 and an image memory 133. Further, a drive signal is supplied from the control circuit 100 via the image control circuit 134. Based on both signals, the drive circuit 130 or 131
The head 16 or 17 is energized by the cassette 1, and an image is formed on the recording paper or film conveyed from the cassette 1.

FIG. 4 shows the recording operation on one recording medium in the inkjet printer configured as described above.

In the figure, in step S1-1, it is determined which of the mode designation switches 104-1 and 104-2 is turned on. When the switch 104-1 is turned on, the process advances to step S1-2 and the recording mode is set to the first recording mode. However, when the switch 104-2 is turned on, the process advances to step S1-3 and the second recording mode is set. When the first recording mode is set, the process advances to step S2, where the supply roller 5 starts rotating.
A recording member is conveyed from inside the cassette 1 toward the timing roller pair 7. In this case, cassette 1
Recording paper is stored inside, and this recording paper is conveyed. In step S3, sufficient conveyance time is taken for the leading edge of the recording paper to be gripped by the timing roller pair 7, and in step S4, the leading edge of the recording paper is taken by the timing roller pair 7.
to stop. Thereafter, steps S5, S6, S7, and S8 are executed in sequence, and the timing roller pair 7, the conveyance roller pairs 8 and 9, and the discharge roller pair 20 start rotating, and the suction fan 18 is turned on. As a result, the recording paper reaches the conveying roller pair 8 via the timing roller pair 7, and is further conveyed via this roller pair 8.

In step S9, it is determined whether the second sensor 23 has detected the leading edge of the recording paper being conveyed. When the tip of the timing roller pair 7 is detected, the answer is "YES" and the process proceeds to step S10.
After stopping the rotation of the first
The inkjet recording head 16 is driven to start printing on recording paper. This printing operation continues until the second sensor 23 detects the trailing edge of the recording paper. That is, when the trailing edge of the recording paper is detected in step S12, the step
Proceed to S13 and stop the print operation.

In this way, the recording paper with the image formed on its surface is transported via the transport roller pair 9 toward the ejection roller pair 20, and is further ejected toward the ejection tray 21 via the ejection roller pair 20. Ru. In step S14, when the trailing edge of the recording paper is detected by the third sensor 24, the process advances to step S15, and after a sufficient conveyance time for the recording paper to be completely discharged to the output tray 21, steps S16 to S18 are performed. are sequentially executed, and the driving of the pair of transport rollers 8 and 9, the pair of discharge rollers 20, and the suction fan 18 is stopped. As described above, one recording operation on the recording paper is completed in the first recording mode.

Next, the operation when the switch 104-2 is turned on will be described. In this case, as described above, the process proceeds from step S1-1 to step S21 via step S1-3. In step S21, the supply roller 5
rotation is started, and the recording member is conveyed from inside the cassette 1 toward the timing roller pair 7. In this case, a transparent resin film is stored in the cassette 1, and the film is transported. In step S22, sufficient conveyance time is taken for the leading edge of the transparent resin film to be gripped by the pair of timing rollers 7, and in step S23, the supply roller 5 is stopped. After this, steps S24, S25, S26 and
S27 is executed in sequence, and the timing roller pair 7, the conveyance roller pairs 8 and 9, and the discharge roller pair 20 start rotating, and the suction fan 18 is turned on. As a result, the transparent resin film reaches the transport roller pair 8 via the timing roller pair 7, and is further transported via the roller pair 8.

In step S28, it is determined whether the first sensor 22 has detected the leading edge of the transparent resin film being transported. When the tip is detected,
If the answer is "YES", the process advances to step S29, and after stopping the rotation of the timing roller pair 7, the process proceeds to step S30.
Then, the second inkjet recording head 17 is driven to start printing on the transparent resin film. This printing operation continues until the first sensor 22 detects the rear end of the transparent resin film. That is, when the rear end of the transparent resin film is detected in step S33, the process advances to step S34, where the printing operation of the second inkjet recording head 17 is stopped. On the other hand, when the second sensor 23 detects the leading edge of the film being printed by the head 17 and being transported toward the first inkjet recording head 16, the process advances from step S31 to step S32, where the first inkjet recording head 16 prints the film. The printing operation is started for. In this way, double striking is achieved on the film. The printing operation of the first inkjet recording head 16 is performed by the second sensor 23.
This continues until the rear end of the transparent resin film is detected. That is, when the trailing edge of the film is detected in step S35, the process advances to step S36, where the printing operation of the second inkjet recording head 16 is stopped.

In this way, the transparent resin film with the image formed on its surface is conveyed via the pair of conveying rollers 9 toward the pair of discharge rollers 20, and is further discharged toward the discharge tray 21 via the pair of discharge rollers 20. be done. In step S14, when the rear end of the transparent resin film is detected by the third sensor 24, the process advances to step S15, and after a sufficient conveyance time for the transparent resin film to be completely discharged onto the discharge tray 21, the process proceeds to step S15. - S18 are sequentially executed to stop driving the transport roller pairs 8 and 9, the discharge roller pair 20, and the suction fan 18. As described above, one recording operation on the transparent resin film is completed in the second recording mode.

In the above embodiment, two recording heads are provided, and in the second recording mode suitable for recording on film, two ink droplets are ejected (double striking) to the same pixel. However, the number of recording heads and the number of overprints are not limited to these. That is, when the same density is specified, it is sufficient that the same transmission density as the transmission density of the reproduced image obtained by recording on plain paper can be obtained in the reproduced image obtained by recording on film. For example, it is equipped with three recording heads, and when recording on film, all heads are driven to perform three strokes, and when recording on plain paper, any two are selected and two strokes are performed. Also good.

[Effects] As described above, according to the present invention, there is provided a first recording mode corresponding to a recording material for reflection observation and a second recording mode corresponding to a recording material for transmission observation, and in the first recording mode. M(≧
1) When M=1, recording is performed for one pixel while the recording material is relatively moved along the moving path, and when M>1, the recording material is During one relative movement along the movement path, one pixel is sequentially recorded M times, and then a second
N per pixel on the recording material in recording mode
(>M) recording means are used to sequentially perform N recordings for one pixel while the recording material is relatively moved once along the movement path. It becomes possible to record a high-quality image at an appropriate density on any recording material for observation.

It should be noted that the present invention is not limited to the inkjet recording method as a recording means, but can also be applied to, for example, a thermal transfer recording method.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
Figures 2 A to C are diagrams explaining the recording mode, Figure 3
1 is a block diagram showing a control section of the apparatus shown in FIG. 1, and FIG. 4 is a flowchart showing a recording operation in the apparatus shown in FIG. 1... Cassette, 5... Supply roller, 7... Timing roller pair, 8, 9... Conveyance roller pair, 11, 1
2, 13, 14, 15...Conveyance guide, 16...First
Inkjet recording head, 17...Second inkjet recording head, 18...Suction fan, 19...Porous guide plate, 20...Ejection roller pair, 21...Ejection tray, 22, 23, 24...Sensor, 100...Control circuit, 101... Read-only memory, 102...
Random access memory, 103...operation unit, 10
4-1.104-2...Switch, 105...Display section, 106...Data input/output buffer circuit, 111
...Motor, 112, 118-122...Drive circuit, 113-116...Clutch, 123...Data input buffer circuit, 124...Data output buffer circuit, 130, 131...Drive circuit, 132...
Image input interface, 133...image memory,
134...Image control circuit, I1 to I3, I11 to I
13... Ink droplet, S... Recorded member.

Claims (1)

[Scope of Claims] 1. A plurality of recording means arranged a predetermined distance apart and recording an image on a recording material; and a plurality of recording means that move the recording material along a predetermined movement path with respect to the plurality of recording means. a signal generator that generates a selection signal for a first recording mode corresponding to a recording material for reflection observation or a second recording mode corresponding to a recording material for transmission observation; and control means for controlling driving of the plurality of recording means in accordance with a selection signal generated from the signal generation means, and the control means controls driving of one pixel on the recording material in the first recording mode. On the other hand, when M (≧1) recording means are used, and when M=1, recording is performed once for each pixel while the recording material is relatively moved along the moving path, and when M>1, recording is performed once for each pixel. In this case, while the recording material is relatively moved once along the moving path, M recordings are sequentially performed for each pixel, and further, N recordings are performed for each pixel on the recording material in the second recording mode. A recording apparatus characterized in that (>M) recording means are used to sequentially and repeatedly perform N recordings on one pixel while the recording material is relatively moved once along the movement path. 2. The recording apparatus according to claim 1, wherein the recording means records an image by ejecting ink.