JPS6340453A - Copying device - Google Patents

Abstract

PURPOSE:To copy with only one scan of an original and a recording paper in an auxiliary scanning direction even in a color copying by providing a read/ record scanning means and an original/recording paper auxiliary scanning means, and combining the scanning of a main scanning direction and that of the auxiliary scanning direction so as to read and record. CONSTITUTION:A reading part 15 and a recording part 16 are constituted integrally and they are driven in such a way that the read/record main scanning means 19 shifts them simultaneously along the main scanning direction B. Whenever a control means 20 detects that N-number of times main scanning by the read/record main scanning means 19 is ended, the original 11 is driven in such a way that an original/recording paper auxiliary scanning means 21 shifts it in an arrow D direction along that of the auxiliary scanning for a prescribed distance L0 decided by the read/record width by an image sensor 13 and a thermal head 14. The recording paper 12 is driven in such a way that the original/recording paper auxiliary scanning means 21 shifts it in an opposite direction (an arrow E direction) inverted by 180 deg. to that of the arrow D along the auxiliary scanning direction.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a copying apparatus that copies images using an image sensor 9 and a thermal recording head. .

2. Description of the Related Art Conventionally, a copying apparatus that reads an image with an image sensor and records the image with a thermal recording head is constructed as shown in FIG. The image number of document 1 is illuminated by fluorescent lamp 2, and the reflected light is j! East 1 Tsuno Ibarenzu 3 J, Reimage Shin 4j4J= imaged.

The image sensor 1 sequentially converts images formed on the image sensor 1 into electrical signals, and these image signals are applied to a thermal head 6 via an amplifier 5. The vA thermal head 6 is a recording head that generates heat in response to an image signal. There is a transfer film 7 coated with a coating between the thermal head 6 and the recording paper 8, and the dye on the transfer film 7 is transferred to the recording paper 8 at the pixel portion where the heat of the thermal head 6 is generated. The document 1 is sequentially moved in the sub-scanning direction, and the recording paper 8 is moved in accordance with this.
, and the image of Ryo V&1 is copied onto the recording paper 8.

Problems to be Solved by the Invention With this conventional configuration, when making color copies of originals, the original 1 and recording paper 8 must be moved three times in the sub-scanning direction. Therefore, it has the disadvantage that the scanning mechanism becomes complicated.

Moreover, in the past, the image sensor 94 and the thermal head 6
As such, a long one with a large number of pixels is required.

In the present invention, the scanning n structure is different from the conventional J, sub ff! 'i 111
The purpose of this product is to provide a copying device that is easy to use.

A one-stage copying apparatus of the present invention to solve the problem integrates an image lens composed of a plurality of pixels to read an image from a document, and a recording head that records the read image on a recording paper. A reading/recording main scanning means that simultaneously moves in the scanning direction, and an original/recording paper mj scanning means that moves the original and the recording paper in the reverse direction in a sub-scanning direction perpendicular to the scanning direction. The feature is that it has a .

Function According to this configuration, instead of scanning the original document @paper, the integrally fixed image recording head is moved in the main scanning direction, and the document document t1 is scanned. The contents of a C document are recorded on recording paper by scanning in the sub-scanning direction perpendicular to the main-scanning direction. I will explain. In addition, the schematic configuration is shown in Figure 1.
In actuality, part of the original 11 is cut out to make it easier to understand the overall structure, so that the part 'C' which is located below the original 11 and cannot be seen is also shown in the drawing.

In FIG. 1, a reading section 15 and a recording section 16, which are composed of a reading image sensor 13, an optical system, a thermal head 14, etc., are arranged between an original 11 and a recording paper 12. , the original 11 is illuminated by a light source 17, and an image of the original 11 is formed on a focusing fiber lens 18 by a re-image sensor 13. The image sensor 13 is arranged perpendicular to the main scanning direction (arrow B direction). The reading section 15 and the recording section 16 are integrally constructed, and are simultaneously moved along the main scanning direction B by the reading/recording main scanning means 19.
s has been lost. Each time the first control stage 20 detects that the N-time main scanning of the reading/recording main scanning means 19 has been completed,
The original 11 is driven by the original/recording paper sub-scanning means 21 to move by a predetermined distance 1o determined by the reading/recording width of the image sensor 1 13 and the thermal head 14 in the direction of the arrow along the sub-scanning direction, and is then recorded. Simultaneously with the movement of the original 11, the paper 12 is driven by the original/recording paper sub-scanning means 21 to move in the opposite direction (arrow E direction) along the m1 scanning direction and reversed by 180 degrees from the above-mentioned arrow direction. The image formed on the image sensor 13 is transferred to the image register 1/13.
The signal is converted into an electrical signal and applied to the thermal head 14.

A transfer film 22 is placed between the recording paper 12 and the thermal head 14.
is interposed, and the dye on the transfer film 22 is transferred to the recording paper 12 by the heat of the thermal head 14.

The transfer film 22 is housed in a transfer film cullet 23, which is partially cut away in FIG. 1, and is configured to be fed as the thermal head 14 moves in the 1-scanning direction. has been done.

FIG. 2 shows the structure of the transfer film 22 when color copying the original 4i11. The transfer film 22-1 is coated with dyes of different colors at regular repeating intervals in the longitudinal direction of the film. For example, dyes of three colors, C, cyan, C, magenta, M, yellow, L, and Y, are applied at intervals of a width that can record the length of the J-scan width.

The light from the auxiliary light source 24 is also configured to read the same color corresponding to the paint. Main scanning direction recording and transfer film 2
In order to synchronize the positions of the transfer film 22, it is necessary to detect the color position of the transfer film 22. In FIG. 2, the transfer film 22
is illuminated by the auxiliary light source 24, and the reflected light is sent to the light receiving sensor 25.
The position of the color is detected accurately. Specifically, if the auxiliary light source 24 is covered with a red light emitting diode, if the transfer film 22 is magenta M, the light receiving sensor 2
5, the light is reflected and the position is detected.

FIG. 3 shows the operating principle of both the scanning means 19, 21 and the control means 20, in which the image sensor 13, which is weight-bearing orthogonal to the main scanning direction, moves in the direction of arrow B1 along the main scanning direction. When scanning, the original 11 and recording paper 12
is stationary. When this main scanning is completed, the original 11 and the recording paper 12 move in the sub-scanning direction (in the direction of arrow B) by the width Lo of the image sensor 13 and then stop. The image sensor 13 then performs main scanning in the opposite direction of arrow B2. This operation is repeated to copy the image onto the recording paper 12.

The number of pixels of the image sensor 13 is several tens to several tens of pixels.
-W image density is 16 dots per meter. Similarly to the thermal head ILb, there are 16 dots per tan. As a method of increasing the resolution, recording may be performed by tilting the thermal head 14 diagonally, or by configuring pixels in a staggered manner.

In the case of monochrome copying, a transfer film 22 coated with black dye is set in the transfer cassette 23, and in the above embodiment, the transfer is always performed along with the main scanning of the image sensor IJ-13 and the thermal head 14. - The transfer film 22 can be effectively used by configuring the transfer film 22 to not be sent when there is no black part in the recorded image.

In the explanation so far, taking the case of one copy as an example, the first control stage 20 is activated each time the image recording head 13 and the thermal head 14 complete one scan in the direction of the arrow B1 or the direction of the arrow B2. Assume that this is detected and the original 11 and the recording paper 12 are moved in the sub-scanning direction.
When copying in color, the control means 0 is 2 [scanning 3].
times, that is, B1→B2-+B1 and the third arrow B1
Color copying can be performed by repeating sub-scanning by the document/recording paper sub-scanning means 21 every time the completion of main scanning in the direction is detected.

FIG. 4 shows the configuration of the reading unit 15 for color copying. When reading a color original, cold cathode discharge tubes 26, 27, .
28 is selected and turned on for each main scan, the light illuminates the original 11 through the condensing lenses 29, 30, and 31, and is transmitted to the image sensor 13 through the convergent fiber lens 18. It forms an image and sequentially converts each of the three color components into electrical signals.

When the cold cathode discharge tubes 26, 27, and 28 are used as light sources in this way, it is possible to select a fluorescent color and to reduce heat generation.

In addition, in the case of color 12'J7, a white light source is used as the reading unit 15 and an optical filter is installed in front of the light source or the image sensor 13 for switching.2) A three-color color image sensor is used as the image sensor 13. There is a way.

In this way, in the copying apparatus of the embodiment, the control 1 means 20 controls the sub-scanning means 21, and the image 1? Each time the sensor 13 and the thermal head 14 complete scanning three times, the document 11 and the recording paper 12 are separated by a predetermined distance determined by the reading/recording width.
Since the image sensor 13 and the thermal head 14 are configured to move the original 11 and the recording paper 12 repeatedly in opposite directions and record the contents of the original 11 on the recording paper 12, It is possible to copy with the same resolution as before by using a shorter length and fewer pixels than the length in the sub-scanning direction.

Further, the image sensor 13 and the thermal head 14 are in the main scanning direction B, and the original 11 and the recording paper 12 are in the sub-scanning direction.
As shown in E, since scanning is performed in the three-way scanning direction and the sub-scanning direction, for color duplication, it is only necessary to scan the original 11 and the recording paper 12 once in the sub-scanning direction, and the scanning The mechanism can be made 11% simpler than before.

As described in the detailed description of the invention, the copying apparatus of the present invention has a reading/recording scanning means and a document/recording paper sub-scanning means. Since it is configured to perform this, even color copying can be done by simply scanning the original and recording paper in the sub-scanning direction, and the scanning* structure can be made into a 4M structure, which is simpler than the conventional one.

[Brief explanation of drawings]

1 to 4 show one embodiment of the present invention, FIG. 1 is a partially cutaway perspective view of a copying device, FIG. 2 is an explanatory diagram of a color transfer cassette film, and FIG. 3 is an illustration of a copying device. FIG. 4 is a diagram illustrating the scanning process, FIG. 4 is a block diagram of a reading section, and FIG. 5 is a schematic diagram of a conventional copying apparatus. 11... Original document, 12... Recording paper, 13... Image sensor, 14... Thermal head (recording head), 19
...reading/recording scanning means, 20...control means,
21... Original/recording paper sub-scanning means, 22... Transfer film, B...] Three constant scanning directions [, 11, r32...
- Direction along the main scanning direction, D, E... direction along the sub-scanning lj direction. Agent Yoshihiro Morimoto - 10 - Figure 1 Figure 3 Figure 4

Claims (1)

[Claims] 1. A reading/recording main scanning means that integrates an image sensor composed of a plurality of pixels and reads an image from a document and a recording head that records the read image on recording paper and moves simultaneously in the main scanning direction; A copying apparatus provided with an original/recording paper sub-scanning means for moving an original and a recording paper in opposite directions to each other in a sub-scanning direction perpendicular to a scanning direction.