JPS63315270A - Color recorder - Google Patents

Abstract

PURPOSE:To achieve compactification by effectively utilizing a space inside a drum, by a method wherein a roll paper is arranged inside the drum and besides, a circuit substrate, a cooling fan, and a plurality of photosensors are arranged. CONSTITUTION:A roll paper 3 is set in a drum 1, and a size of one sheet content of its top is pulled out from an output to be installed on a surface of the drum 1. When recording is performed by thermal transfer, a color ink sheet 9 is conformed onto the paper, and each dot is heated from above that with a thermal head 7. That is, a start on a first color is registered, and is recorded by rotating the drum once. When moves to a next color, start registering of the paper and start registering of the next color of the color ink sheet are performed by liberating the head upward, the head is taken downward, and the drum is rotated once while thermal transferring. A third color is processed in the same way. Further, a circuit substrate 12 and a fan 13 for its cooling are fixed to an outer periphery part in the drum, and photosensors 11a and 11b are installed conformed to an edge part of the roll paper to detect the presence and type of the paper.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention incorporates a roll paper, an actuator, a sensor, etc. in a drum, and rotates the paper mounted on the drum surface to pass through a color recording section. The present invention relates to a color recording apparatus that performs color recording in a manner similar to that described above.

[Summary of the invention]

The present invention provides a color recording device using roll paper.
The roll paper is built into the drum, one sheet of roll paper is pulled out and placed on the drum surface, the drum is rotated a predetermined number of times, and a recording section using an inkjet or thermal head records the paper accurately and at high speed. It was designed so that it could be recorded. Furthermore, by arranging roll paper, actuators, sensors, etc. inside the drum, space can be used effectively and the apparatus can be made smaller.

[Conventional technology]

Conventionally, color recording apparatuses that perform color recording include those that use roll paper and those that use cut paper. When using roll paper, there are two methods: keeping the roll paper continuous and moving the recording unit back and forth the required number of times to record, and cutting the roll paper into pieces the size of one sheet and wrapping them around a drum and rotating them the required number of times. A method has been used in which recording is performed by exposing the recording section to illumination.

[Problem that the invention seeks to solve]

In the conventional technology, the recording head part was moved back and forth according to each primary color of the roll paper, so it was necessary to install a space to hold the roll paper, a space to move the paper back and forth, and a cutter to cut the roll paper. Because it requires space, the equipment becomes larger, and because the paper is moved back and forth, repeated stacking tends to cause color misalignment, and it is difficult to run the roll paper stably. There was a problem. Furthermore, since the cooling fan, sensor, and board are arranged separately from the paper feeding section, each requires space and a guide member for the paper to pass through is required, making the device larger and larger. There was also the problem of cost amplifiers due to the increased number of parts.

[Means for Solving the Problems] In order to solve the conventional problems, in the present invention, roll paper is arranged inside the drum, and the paper is fed out from an opening provided in the drum and directly placed on the circumference of the drum. The drum was wound around the drum and rotated a predetermined number of times in one direction to record each primary color. Furthermore, a circuit board and a cooling fan are arranged inside the drum, as well as a plurality of photosensors, so that the space inside the drum can be used effectively.

C Effect] By arranging the roll paper and the photo sensor serving as the paper detection means inside the drum as described above, it is possible to detect the storage of the roll paper and the type of paper with the photo sensor provided in the width direction of the paper. The end of the paper can also be detected at the same time. Furthermore, the displacement of the paper is determined by the rotation of the drum, and by ensuring the rotational accuracy of the drum, very highly accurate recording becomes possible. Furthermore, by providing a circuit board inside the drum, a drive circuit for the photosensor can be configured, and the temperature inside the drum can be kept constant by exhausting air from a fan installed at the end of the drum, which also makes it possible to keep recording conditions constant. It is possible.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. 1st
2 and 2 are cross-sectional views of the basic components of the present invention when the recording section is formed by thermal transfer.

FIG. 1 is a radial cross-sectional view of the drum, and FIG.
FIG. 3 is a cross-sectional view of the drum in the width direction.

An elastic body 2 made of heat-resistant rubber or the like is formed on the outer surface of a drum 1 made of metal, plastic, or the like by means of adhesive or the like. Further, there is an opening in a part of the circumference of the drum. The opening is a take-out port for taking out the roll paper 3 in the drum 1 onto the drum surface, and two roll paper support rollers 4 are installed at the take-out port.

A roll paper 3 is set in the drum 1, and the leading end of the roll paper is passed between the support rollers 4 at the draw-out opening, and a piece of paper the size of one sheet is pulled out and mounted on the surface of the drum 1. drum 1
An elastic layer 2 is formed on the surface of the recording head, which presses the paper against the recording head, prevents the paper from slipping, and has excellent heat resistance when a thermal head is used. The leading edge of the rolled paper pulled out in the size of one sheet is fixed to the drum by a paper presser 5. A roll paper tension plate 6 is provided in the drum 1 so that the roll paper 3 does not lose its rolled state. The roll paper tension plate 6 holds the roll paper under a light load, and the load is such that it does not pose a problem when pulling out the roll paper. When the roll paper is set in this way, by rotating the drum, the paper mounted on the surface of the drum also rotates, and the roll paper inside also rotates while remaining inside. When recording is performed using a thermal transfer method, the color ink sheet 9 is placed on the paper, and the thermal head 7 heats each dot from above, thereby recording. Color ink sheets are formed in the size of one sheet of paper for each primary color, for example, yellow and magenta sequentially.

Cyan is repeatedly formed on the roll film.

When performing color recording, align the starting position of the first color with the color ink film and the paper, rotate the drum once, and then move to the next color by releasing the - After aligning the start position with the start position of the next color on the color ink sheet, lower the head downward and rotate it once while performing thermal transfer. A similar operation is performed for the third color. When the transfer of the specified color is completed,
Cut the edge of one sheet with the cutter while holding the paper with the paper holding part of the cutter 0, and rotate the drum while releasing the paper holding part 5 at one end, then you can cut the one sheet size of paper with color recording. is discharged from the outlet. FIG. 2 is a cross-sectional view of the drum in the width direction, and flanges are provided at both ends of the drum 1 for supporting the drum and the roll paper.

In Fig. 2, the left end flange 15 is fixed integrally with the drum, and has a guide portion 15a formed inside to support the roll paper 3, and a bearing portion 15b supporting the drum itself formed on the outside. It is formed. Furthermore, a drive gear 16 for driving the drum is integrally fixed to the outside. The flange 14 on the right end is a guide portion 14 for supporting the roll paper.
a and a bearing portion 14b that supports the drum itself.

Further, the fan 13 and the circuit board 12 are fixed to the outer periphery with screws or the like. Furthermore, photosensors Ila and Ilb are installed along the edges of the roll paper.

The photo sensor is a reflective sensor, which eliminates the need for paper.
When the core 3a of the roll paper appears, the reflected light disappears and the end of the paper is detected. Photo sensor 11a.

11b can automatically detect the type of paper by arranging them at corresponding positions in the paper, such as A4 and letter size, for example.

The temperature of the circuit board 12 increases due to heat generated by the driving elements. Therefore, when recording is performed continuously, the temperature inside the drum increases, and the temperature of the roll paper inside the drum increases, resulting in a decrease in transferability in the case of thermal transfer. In order to prevent this, the inside of the drum is evacuated using a fan 13 to keep the temperature constant. If the above configuration of the present invention is used, paper storage and paper movement can be done using a drum and a device for rotating the drum, and a sensor and a circuit board are installed inside the drum.

By incorporating a fan, the volume can be extremely reduced, and the displacement of the paper can be determined by the rotational accuracy of the drum, making it possible to record with extremely high accuracy. FIG. 3 is an overall configuration diagram of an example of the present invention. 23 is a paper ejection port, 30 is an attachment and release unit for the paper holding unit 5,
29 is a cutter for cutting the roll paper. A pulley 16 for driving the drum is provided at the end of the drum 1, and is connected and driven by a driving motor 22 and a timing heald 21. 25 is a cam for raising and lowering the recording head 24, and 26 is a spring for lifting the recording head. Although the recording head 24 is not shown, a predetermined pressure is applied to the drum by a spring. 27 is a circuit board provided with driving and control circuits. 28 is an exterior casing of the device. 11 is a photosensor for detecting paper. When changing the color to be recorded, rotate the cam 25 to release the pressure on the recording head 26, and the spring 26 lifts the color ink sheet 9 between it and the paper 3 attached to the drum 1. Once there is enough space for movement, the ink sheet is moved to the next required color, and the drum is also moved to the recording start position.

Drum with paper 3 installed and color ink sheet 9
moves in synchronization with each recording of one line, and sequentially records the necessary lines. The drive motor 22 of the drum 1 is precisely controlled using a stamping motor or the like. When color recording is performed using an inkjet or the like, the ink ejection timing and drum rotation timing are synchronized.

FIG. 4 is a main sectional view when the present invention is constructed using an inkjet. Reference numerals 31, 32, and 33 are inkjet heads that eject ink corresponding to the primary colors of yellow, magenta, and cyan.

〔Effect of the invention〕

As described above, by using the present invention, when performing color recording, the device can be configured compactly by using space much more effectively than conventional methods, and is large enough to be used as an output terminal for a personal computer, etc. It is possible to provide a color recording device of this size.

In addition, by providing paper detection means and cooling means inside the drum, the inside of the drum can be used effectively and the temperature of the drum can be kept constant, allowing stable paper feeding with fewer components. I can do it.

Furthermore, in terms of recording accuracy, since the paper is fixed to the drum, the rotational accuracy of the drum can be guaranteed, making it possible to support very high resolution recording.

As mentioned above, it is an excellent color recording device, and its industrial value is extremely large.

[Brief explanation of the drawing]

The figures all show embodiments of the present invention; Fig. 1 is a cross-sectional view of the device, Fig. 2 is a longitudinal sectional view of the device, Fig. 3 is an overall configuration diagram of the device, and Fig. 4 is an example of an inkjet device. FIG. 1... Drum 2... Roll paper 11a, llb... Photo sensor 12... Circuit board

Claims (3)

[Claims] (1) In a color recording device that records on paper by wrapping paper around the drum surface and rotating the drum a predetermined number of times, the drum has a built-in roll paper and is equipped with a circuit board, a cooling means, and a paper detection means. A color recording device characterized by being arranged together. (2) A color recording apparatus according to claim 1, wherein the circuit board disposed within the drum is prevented from increasing in temperature of the entire drum by a cooling fan also disposed within the drum. (3) The color recording apparatus according to claim 1, wherein the end of the roll paper and the width of the paper are detected by a photosensor provided in the drum.