JPH01188370A - Scan recording device - Google Patents

Abstract

PURPOSE:To obtain a high-quality image by setting the number and interval of recording means on a recording head so that the width of pixel units consisting of a plurality of pixels formed on an object to be scanned by a plurality of recording means is reduced to less than a specific size. CONSTITUTION:Photosensitive material F transferred to an exposure part 14 is wound around a drum 26, and is exposed by LED's 32a-32i attached to an exposure head 30. In this case, pixel units constituted by cyan pixels 33a-33c generated by LED's 32a-32c, magenta pixels 33d-33f by LED's 32d-32f and yellow pixels 33g-33i by LED's 32g-32i are simultaneously formed. In addition, the exposure head 30 is already moved to a subscan direction by wire 28, and the pixel units 35 with a width(W) in a subscan direction are repeatedly formed. Consequently, if the maximum value of the width(W) of the pixel units 35 formed by pixels 33a-33i is 0.3mm, a high-quality color image with little unevenness can be obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a scanning recording device for recording an image or the like on a scanned object. The present invention relates to a scanning recording device that can record high-quality images in a short time by scanning an exposure head with respect to a scanned object.

[Background of the Invention] For example, there is a scanning recording device that records characters, images, etc. by scanning an exposure head along a photosensitive material such as a film. In this case, the exposure head has a light emitting element such as an LED, and records an image or the like on the photosensitive material by intensity modulating or time modulating the light beam output from the light emitting element.

By the way, if an attempt is made to record an image or the like on a photosensitive material using only one light emitting element, it will take a long time to obtain the desired image or the like. Therefore, some methods have been adopted in which the exposure head is composed of a plurality of light emitting elements and each light emitting element emits light at the same time to form a plurality of pixels on a photosensitive material at the same time, thereby shortening the recording time.

However, in this case, there is a concern that the quality of recorded images etc. may deteriorate. In other words, if there is an error in the mutual positional relationship of the light-emitting elements or in the optical system that guides the light beam output from the light-emitting elements to the photosensitive material, there will be a difference in the number of light-emitting elements forming the exposure head on the photosensitive material. Periodic unevenness occurs in the direction in which the light emitting elements are arranged. Further, if there is unevenness in the scanning speed of the exposure head or the photosensitive material, periodic unevenness corresponding to the number of light emitting elements will occur in the scanning direction.

[Object of the Invention] The present invention has been made to overcome the above-mentioned disadvantages, and when forming a plurality of pixels simultaneously on a scanned object using a recording head having a plurality of recording means, By setting the width of an image unit consisting of a plurality of pixels formed by a plurality of recording means to be approximately 0.3 mm or less, it is possible to shorten the recording time and record high-quality images, etc. An object of the present invention is to provide a scanning recording device.

[Means for Achieving the Object] In order to achieve the above-mentioned object, the present invention scans the object to be scanned with a recording head having a plurality of recording means that simultaneously act on the object to be scanned, thereby creating an image, etc. A scanning recording device for recording, wherein the recording means are configured such that the width in the scanning direction of an image unit formed by a plurality of pixels formed on a scanned object by the plurality of recording means is approximately 0.3 mm or less. The number and interval are set on the recording head.

Further, the present invention is characterized in that the recording head is constituted by an exposure head having a plurality of LEDs.

Furthermore, the present invention is characterized in that the recording means are arranged at predetermined intervals in the recording direction by the recording head.

[Embodiments] Next, preferred embodiments of the scanning recording apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates the main body of the scanning recording apparatus according to this embodiment. This main body part 10 is surrounded by a casing 12, and inside thereof, an exposure part 14, a water application part 16, a thermal development transfer part 18, and a control part 20 for controlling these parts are provided.

A magazine 22 for storing a photosensitive material F wound into a roll is loaded in the main body 10, and the photosensitive material F taken out from the magazine 22 is passed through a cutter 24 to the exposure section 1.
Transferred to 4. The exposure section 14 includes a drum 26 that rotates at high speed in the six directions of arrows (main scanning direction), and as shown in FIG.
The exposure head 30 is disposed close to the drum 26 and moves in the direction of arrow B (sub-scanning direction) via a wire 28.

The support body 31 constituting the exposure head 30 has nine L E
D32a to 32i are arranged at predetermined intervals, and LEI) 32a to 32cXLED32d to 32f
and L E D 32 g to 32 i respectively emit light of different wavelengths to the photosensitive material F wound around the drum 26 . For example, L E D32 a to 32c irradiate the photosensitive material F with infrared light that develops a cyan (C) dye, and L E D32 d to 32 f irradiate the photosensitive material F with red light that develops a magenta (M) dye. , LED32 g to 3
2i irradiates yellow light that causes a yellow (Y) dye to develop color. In this case, on the photosensitive material F, as shown in FIG. 3, an image unit 35 consisting of pixels 33a to 33i offset by an interval p in the sub-scanning direction and an interval d in the main scanning direction is arranged for each L E D32 a. ~32C, LED32d
32f to 32f and L E D32g to 32i.

The water application section 16 applies dampening water to the exposed surface of the photosensitive material F transferred from the exposure section 14 and transfers this photosensitive material F to the thermal development transfer section 18 . A tray 34 for storing a sheet-like image receiving material P is loaded in the upper part of the thermal development transfer section 18 . The image-receiving material P is sheeted by a conveying roller 36 and transferred to the thermal development transfer section 18 . In this case, the thermal development transfer section 1
At step 8, the photosensitive material F and the image receiving material P are superimposed and subjected to a heat development process and a color image transfer process.

On the other hand, a take-out tray 38 is provided on the upper surface of the casing 12, and the image-receiving material P onto which the color image has been transferred is delivered to the take-out tray 38. Also, casing 1
A waste box 40 is disposed at the bottom of 2, and the photosensitive material F carried out from the thermal development transfer section 18 is stored in this waste box 40.

The scanning recording apparatus according to this embodiment is basically constructed as described above, and its operation and effects will be explained next.

First, the photosensitive material F stored in the magazine 22 is placed in the exposure section 1.
4, and when a predetermined amount has been delivered, the rear end portion is cut by a cutter 24. Next, the photosensitive material F transferred to the exposure section 14 is wound around a drum 26, and then the photosensitive material F transferred to the exposure section 14 is wound around a drum 26, and then the light-sensitive material F is wound around a drum 26, and then the photosensitive material F is wound around a drum 26, and then the photosensitive material
exposed by i.

In this case, on the photosensitive material F, as shown in FIG.
An image unit 35 composed of cyan pixels 33a to 33C formed by EDs 32a to 32c, magenta pixels 33d to 33f formed by LEDs 32d to 32f, and yellow pixels 33g to 33i formed by LEDs 32g to 32i. are formed simultaneously. Note that the pixels 33a to 33c, 33d to 33f, and 33g to 331 are formed offset by a distance d, and as the drum 26 rotates in the direction of arrow A (main scanning direction), cyan, magenta, and yellow colors are formed. are superimposed to form the desired color. Further, the exposure head 30 is moved in the direction of arrow B (sub-scanning direction) by the wire 28 (see FIG. 2).
In this direction, the width in the sub-scanning direction is W(3
The image units 35 of p, ) are repeatedly formed. As a result, a color image is two-dimensionally recorded on the photosensitive material F.

Here, in this embodiment, L
E D32 a to 32C, 32d to 32f and 3
By simultaneously emitting light from 2g to 32i, high-speed recording of color images is achieved. In this case, uneven conveyance of the exposure head 30 in the sub-scanning direction or L E D
There is a concern that unevenness may occur in the color image due to errors in the setting positions of 32a to 32i. On the other hand, the visibility of irregularities by the human eye is highest when the periodic pattern is repeated at l mm intervals at the viewing distance;
It is known that when the spacing is set to 0.3 mm, the effect decreases to about 1/10 of that of the 1 mm spacing, and there is almost no effect. Therefore, when the maximum value of the width W of the image unit 35 formed by the pixels 33a to 33i is 0.3 mm,
For a desired dot density (represented by the reciprocal of the interval p between pixels 33a to 33i), the number n of pixels per color that can be simultaneously recorded without deteriorating image quality is within the range shown by the shaded area in FIG. Become within. Therefore, by setting the dot density (1/p) and the number n of simultaneously recorded pixels within the range indicated by the shaded area, it is possible to obtain a color image of very high quality with no noticeable unevenness.

For example, in the case of this embodiment, the adjacent pixels 33a to 3
If the interval p of 3i is 85 .mu.m, the width W of 350 image units recorded at - degrees is 0.255 mm, and it can be seen that a high-quality color image with inconspicuous unevenness can be obtained. Note that since the color image is formed simultaneously with three pixels for each color, a high quality image can be obtained at high speed.

Here, in the embodiment described above, an example is described in which the width W of the image units 35 formed at the same time is set to 0.3111[0 or less, thereby achieving low visibility of unevenness.

In this case, pixels 33a to 33 repeatedly formed in the sub-scanning direction by the same L E D32a to 32i
If the interval between i is also set to 0.3 mm or less, image unevenness due to uneven conveyance of the exposure head 30 in the sub-scanning direction can be made less visible.

Next, the photosensitive material F on which the color image has been recorded is transferred to a drum 2.
By rotating 6 in the direction opposite to the direction of arrow A, the water is transferred to the water application section 16. The photosensitive material F transferred to the water application section 16 has its exposure surface coated with dampening water, and is sent to the thermal development transfer section 18 . On the other hand, the image-receiving material P stored in the tray 34 is conveyed into sheets by a conveying roller 36, and is overlapped with the photosensitive material F in the thermal development transfer section 18. In this case, in the thermal development transfer section 18, a color image is developed by heating the photosensitive material F, and then this color image is transferred onto the image receiving material P. After the image-receiving material P on which the color image has been transferred is separated from the photosensitive material F, it is carried out to a take-out tray 38. Further, the photosensitive material F is discharged into the waste box 40.

[Effects of the Invention] As described above, according to the present invention, when recording an image or the like by scanning the object to be scanned with a recording head having a plurality of recording means that simultaneously act on the object to be scanned, The number and spacing of the recording means are set on the recording head so that the width of an image unit made up of a plurality of pixels formed on the object to be scanned by the plurality of recording means is approximately 0.3111111 or less.

In this case, unevenness caused by the scanning state of the recording head with respect to the object to be scanned or the mutual setting state of multiple recording means is made less visible, so it is possible to record extremely high-quality images, etc., and the recording time is reduced. It becomes possible to shorten the time effectively.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments.
For example, it can be applied to a scanning recording device having a thermal head, an inkjet head, etc. as a recording head.
Of course, various improvements and changes in design are possible without departing from the gist of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a scanning recording device according to the present invention, FIG. 2 is an explanatory diagram of the main part configuration of the scanning recording device according to the present invention, and FIG. 3 is an image formed by the scanning recording device according to the present invention. FIG. 4 is an explanatory diagram showing the conditions for obtaining a high quality image in the scanning recording apparatus according to the present invention. 10... Main body part 14... Exposure part 16
...Water application section 18...Heat development transfer section 2
0...Control unit 26...Drum 30.
...Exposure head 32a-32i...LED
33a-33i...Pixel F...Photosensitive material P
...Image receiving material patent applicant Fuji Photo Film Co., Ltd. - 819° dot density (7P)

Claims (3)

[Claims] (1) A scanning recording device that records an image, etc. by scanning the object to be scanned with a recording head having a plurality of recording means that simultaneously act on the object to be scanned, wherein the object is recorded by the plurality of recording means. A scanning recording device characterized in that the number and spacing of the recording means are set on the recording head so that the width in the scanning direction of an image unit consisting of a plurality of pixels formed on the scanning body is approximately 0.3 mm or less. . (2) A scanning recording apparatus according to claim 1, wherein the recording head is comprised of an exposure head having a plurality of LEDs. (3) A scanning recording device according to claim 1, wherein the recording means are arranged at predetermined intervals in the recording direction of the recording head.