JPH0524227A - Recording apparatus - Google Patents

Abstract

PURPOSE:To obtain a recording apparatus preventing the sensitization of a recording sheet at the time of the insertion of the recording sheet in a recording apparatus and capable of confirming the recording surface of the recording sheet as it is at the time of the discharge of the recording sheet. CONSTITUTION:In a multicolor thermal recording apparatus 10, a thermal recording sheet S is inserted in the apparatus 10 so that the recording surface thereof is placed on the placing surface of a paper tray 14 to be subjected to recording by a thermal head 20 and fixed by light sources 22,24 to be fed out to a paper tray 16 so that the recording surface is directed upwardly. Therefore, when the thermal recording sheet S is set to the paper tray 14, it is not sensitized and the recording surface thereof can be confirmed as it is at the time of feed out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device for recording an image on a recording sheet which is exposed to light.

[0002]

2. Description of the Related Art For example, in a recording apparatus using a thermosensitive recording sheet, an image is recorded on the thermosensitive recording sheet by a thermal head, and the image is fixed by light.

[0003]

Such a thermal recording sheet is not so sensitive to light,
Generally, it is generally handled while being exposed to outside light. However, when exposed to external light for a long time, the thermosensitive recording sheet may be exposed to light, and it may be difficult to develop color when recording in the recording apparatus. Therefore, in order to prevent such photosensitivity, a method of inserting the thermal recording sheet by turning it over and recording is possible, but the thermal recording sheet after recording is also ejected inside out, so the recording screen cannot be seen during ejection. ,
This causes the inconvenience of having to turn over to check the recording screen.

The present invention has been made in order to solve this kind of problem, and prevents exposure of the heat-sensitive recording sheet to obtain a suitable image and makes it easy to check the recording screen after recording. The purpose is to provide a device.

[0005]

In order to achieve the above object, the present invention is an apparatus for recording an image on a recording sheet which has a color forming layer on a support and is exposed to light from the recording surface. An insertion portion for inserting the recording surface of the recording sheet in a light-shielding state, a recording drum wound in a state where the outer peripheral portion of the recording sheet is in contact with the support side, and a recording drum wound around the recording drum. It is characterized by further comprising: recording means for performing recording on the recording sheet from the recording surface side; and a discharging section for discharging the recording sheet with the recording surface exposed to the outside.

[0006]

Since the recording surface is not exposed when the recording sheet is inserted, it is not exposed to external light such as an interior light.
Therefore, a suitable image can be recorded, and since the recording surface is exposed when the sheet is ejected, the recorded image can be confirmed as it is.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A recording apparatus according to the present invention will be described in detail below with reference to the accompanying drawings with reference to preferred embodiments.

FIG. 1 shows a multicolor thermal recording apparatus 10 using color thermal paper as a recording sheet.

The multicolor thermosensitive recording apparatus 10 is provided with paper stands 14 and 16 for inserting and ejecting the thermosensitive recording sheet S on one side surface of the case 12 which is shielded from light. Inside the case 12, there is provided a drum 18 that is rotatable in both directions of arrows A and B in the figure, and a thermal head 20 is provided near the outer periphery of the drum 18. , A first light source 22 for performing optical fixing on the thermal recording sheet S in the vertical direction,
A second light source 24 is provided. Inside the apparatus 10, a pair of conveying roller pairs 26, 28, 30, guides 32, 34, and guide rollers 36, 37 are provided along the conveying path of the thermosensitive recording sheet S. Further, in order to detect the position of the conveyed thermal recording sheet S, the first detection sensor 3 is provided in the vicinity of the first light source 22 and the second light source 24.
8 and a second detection sensor 39 are provided.

As shown in FIG. 2, the thermosensitive recording sheet S inserted into the multicolor thermosensitive recording apparatus 10 is coated with a back coat 40 for preventing curling and having a coating for blocking ultraviolet rays and the like. Further, it has a support 42 composed of paper or film, and on the support 42, a cyan coloring layer 44 for coloring cyan from below, a magenta coloring layer 46 for coloring magenta, and a yellow coloring for yellow. The layer 48 is laminated, and the intermediate layer 5 is formed so as not to mix the coloring layers 44, 46, 48 between the layers 44, 46, 48.
A protective layer 54 is formed on the uppermost layer with 0 and 52 sandwiched therebetween.
In the thermal recording sheet S, the back coat 40 contains an ultraviolet absorber that blocks ultraviolet rays and the like,
Therefore, the light for fixing reaches the color forming layers 44, 46, 48 only from the protective layer 54 side. As shown in FIG. 3, the thermal recording sheet S having such a configuration has different image density characteristics of the color forming layers 44, 46 and 48 with respect to the applied thermal energy. That is, by adjusting the heat energy applied to the heat-sensitive recording sheet S, it becomes possible to color only a specific coloring layer, for example, the yellow coloring layer 48, and these coloring layers 44, 46 and 48 are sequentially colored. As a result, a good image can be obtained.

The multicolor thermal recording apparatus 10 according to the present invention is constructed as described above, and its operation will be described below.

First, the thermal recording sheet S is set on the paper tray 14 with the protective layer 54 side (recording surface side) facing downward.
The thermal recording sheet S is carried into the multicolor thermal recording apparatus 10 by the pair of transport rollers 26. The thermal recording sheet S guided by the guide 32 reaches the thermal head 20 at the leading end thereof by the rotation of the drum 18 in the arrow A direction. Next, the thermal head 20 is pressed against the thermal recording sheet S, and the yellow coloring layer 48 of the thermal recording sheet S is pressed.
Thermal recording is performed for each line. And
After the thermal recording of the yellow coloring layer 48 by the thermal head 20, the image on the yellow coloring layer 48 is fixed by the light of the predetermined wavelength from the first light source 22.

Thus, when the trailing edge of the recording area of the thermal recording sheet S passes the first light source 22, the first detection sensor 38 detects the passage and stops the movement of the thermal recording sheet S. Then, the drum 18 and the conveying roller pair 28 are rotated in the opposite direction (arrow B direction), and recording is performed on the magenta coloring layer 46 of the thermal recording sheet S from the rear end side of the thermal recording sheet S. In this case, the magenta coloring layer 4
No. 6 is heat-sensitively recorded with higher energy than that of the yellow coloring layer 48. Since the yellow coloring layer 48 has already been fixed by the first light source 22, it is not recorded again by the thermal head 20. After recording on the magenta coloring layer 46, the thermosensitive recording sheet S is optically fixed on the magenta coloring layer 46 by the second light source 24. When the second detection sensor 39 detects the front end of the recording area of the thermal recording sheet S, the drum 18 and the conveying roller pair 26 are rotated in the opposite direction (direction A), and the thermal head 20 causes the magenta coloring layer 46 to rotate. Thermal recording of the cyan coloring layer 44 is performed with higher energy. After that, the paper is conveyed to the paper tray 16 through the guide 34 and the pair of conveying rollers 30. At that time, the thermal recording sheet S is reversed by the drum 18,
The protective layer 54 side (recording surface side) faces up and is carried out.

In this embodiment, the color forming layers of the thermosensitive recording sheet S are laminated in the order of yellow, magenta, and cyan from the top, but the present invention is not limited to this and can be freely combined. Further, the thermosensitive recording sheet S may be in the form of a roll. In that case, a cutting mechanism is provided in the vicinity of the conveying roller pair 30, and the heat-sensitive recording sheet S having a predetermined length is provided.
Can be cut.

In this embodiment, when the thermal recording sheet S is set on the paper tray 14, the protective layer 54 side (recording surface side) is on the lower side and the back coat 40 is on the upper side. Outside light such as room light is absorbed by the support or the back coat 40 that shields ultraviolet rays and the like and does not reach the coloring layers 44, 46 and 48.

With the protective layer 54 (recording surface) of the thermosensitive recording sheet S facing down on the paper tray 14 or the document cassette, the thermosensitive recording sheet S is left for 30 minutes under a fluorescent lamp (500 lux), and the conventional thermosensitive recording sheet. Table 1 shows an example in which the protective layer side (recording surface side) of the above was compared to the above. It is clear that a higher maximum yellow density can be obtained by loading the thermal recording sheet S as in this embodiment.

Further, since the protective layer 54 (recording surface) of the thermosensitive recording sheet S is discharged from the multicolor thermosensitive recording apparatus 10, the recorded image can be viewed as it is.

As a second embodiment, a multicolor thermal recording apparatus 58 in which original cassettes 56 and 57 are loaded instead of the paper trays 14 and 16 will be described. The same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

Document cassette 56 of multicolor thermal recording device 58
Is inserted and set inside the case 12. A thermal recording sheet S is laminated on the original cassette 56 with the protective layer 54 facing down. The multicolor thermosensitive recording device 58 configured as described above stores the thermosensitive recording sheet S in the original cassette 56.
Sheets are separated from each other by a roller 59, and an image is heat-sensitively recorded in the same manner as in the first embodiment.

Also in this embodiment, since the sheets are set in the original cassette 56 at once, the protective layer 54 of the thermal recording sheet S is
It is not necessary to load the sheets one by one with the side (recording side) facing down.

As a third embodiment, a multicolor thermal recording apparatus having three thermal heads will be described. The same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

The multicolor thermosensitive recording apparatus 60 has a large drum 62 provided inside the case 12, and is provided for yellow and
Thermal heads 64, 66, 6 for magenta and cyan
8 are provided. For this reason, the drum 62 is
It is only necessary to rotate in the direction, and it is not necessary to rotate it in the reverse direction. Therefore, the recording speed of the thermal recording sheet S can be increased.

Further, in the series of embodiments, only the recording method of thermal recording optical fixing using a thermal recording sheet has been described, but the recording method of optical recording thermal fixing can be diverted. Further, in this series of examples, the back coating containing an ultraviolet absorber is performed on the support,
The support itself may contain an ultraviolet absorber. Further, when the support is opaque paper, the ultraviolet absorber may not be used.

[0024]

[Table 1]

[0025]

According to the recording apparatus of the present invention, the following effects can be obtained.

Since the recording apparatus does not expose the recording surface of the recording sheet when the recording sheet is inserted, a good image can be obtained without being exposed to external light such as an interior light. Further, since the recording surface is exposed when the recording sheet is ejected, the recorded image can be viewed without turning over the recording sheet.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a multicolor thermosensitive recording apparatus which is a recording apparatus according to the present invention.

FIG. 2 is a longitudinal sectional view of a heat-sensitive recording sheet used in the recording apparatus according to the present invention.

FIG. 3 is a diagram showing an image density relationship of a color forming layer corresponding to thermal energy applied to a heat-sensitive recording sheet used in the recording apparatus according to the present invention.

FIG. 4 is an explanatory diagram of a multicolor thermosensitive recording apparatus which is a recording apparatus according to the present invention.

FIG. 5 is an explanatory diagram of a multicolor thermosensitive recording apparatus which is a recording apparatus according to the present invention.

[Explanation of symbols]

10, 58, 60 ... Multicolor thermal recording device 14, 16 ... Paper stand 18, 62 ... drums 20, 64, 66, 68 ... Thermal head 22, 24 ... Light source

Claims (5)

[Claims] 1. An apparatus for recording an image on a recording sheet, which has a coloring layer on a support and is exposed to light from the recording surface, and an insertion section for inserting the recording surface of the recording sheet in a light-shielding state. A recording drum wound in a state where a support-side surface of the recording sheet is in contact with an outer peripheral portion, and the recording sheet wound around the recording drum,
A recording apparatus comprising: a recording unit that performs recording from the recording surface side; and a discharge unit that discharges the recording sheet with the recording surface exposed to the outside. 2. The recording apparatus according to claim 1, wherein the recording sheet is for recording with heat and fixing with light. 3. A recording apparatus according to claim 1, wherein the recording sheet is for recording with light and fixing with heat. 4. The recording apparatus according to claim 1, wherein the recording sheet has a support containing an ultraviolet absorber. 5. The recording apparatus according to claim 1, wherein the recording sheet has a support coated with a material containing an ultraviolet absorber.