JPH0252777A - Recording apparatus - Google Patents

Abstract

PURPOSE:To effectively arrange printing means and feed rollers and to perform good feed by arranging a plurality of the printing means in a state divided into a plurality of rows and providing the feed rollers to said rows. CONSTITUTION:Thermal heads 42, 44 are arranged in two rows and the printing of one line is performed. Two thermal heads 42 are arranged in the rear row so as to be positioned on the same row and a feed roller 106 is arranged between both heads. One thermal head 44 is arranged in the front row and feed rollers 108 are arranged on both sides of the thermal head 44. Each of the heads has a length 1/3 the width of thermal paper D to perform printing at density of 400 dots/inch. At first, the printing of both end parts is performed by the heads 42 and, when the thermal paper D reaches the front head 44, the printing of the central part is performed by the head 44. The feed rollers 106, 108 are connected to a motor 56 through an one-way clutch 52 and, at the time of overload generated when the paper is fed by a feed roller 82, the feed rollers 106, 108 race and, at the time of automatic paper feed, said rollers 106, 108 are rotationally driven to feed the thermal paper D forwardly.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a recording device, and more specifically, a CAD (computer-aided automatic drafting device) etc. that records on a large-sized recording paper such as an AO plate. The present invention relates to a recording device effective for.

[Conventional technology]

As devices for recording on AO recording paper, printing devices using a photographic method, recording devices using an electrostatic recording method, etc. are well known and are used in a variety of fields.

Further, CAD has been put into practical use to facilitate the creation of design drawings, and various recording devices for use therein have also been proposed.

When recording on a large-sized recording paper such as an AO plate, it is not preferable to simultaneously record the entire surface because the configuration of the recording device becomes complicated, and the recording means with a predetermined main scanning length scans the recording paper relatively in the sub-scanning direction. It is done by doing.

For example, a recording device using an electrostatic recording method includes a charging member having a main scanning length approximately equal to the width of the recording paper, charges the recording paper to form a latent image, and injects toner or ink droplets onto the latent image. %lii of the image by attaching it.

For example, when thermal paper is used as the recording material, printing is performed by relatively sub-scanning the thermal paper with a thermal head having a predetermined main scanning length. A recording apparatus has been proposed in which the thermal heads are divided into a plurality of parts along the main scanning direction, these are arranged in a plurality of rows, and all the thermal heads print one line while conveying the thermal paper.

[Problem to be solved by the invention]

When printing is carried out while conveying thermal paper in the print recording section, a roller is installed in the print recording section to convey the thermal paper. Therefore, unless the printing means and the conveying means are effectively arranged, the recording apparatus will become large.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide a recording device having a structure that can be downsized.

[Means and effects for solving the problems] The above object of the present invention is to provide a plurality of printing means provided in a plurality of rows having a predetermined main scanning length and sub-scanning along the recording material conveying direction, and the printing means. This is achieved by a recording apparatus having a recording material conveyance roller provided in the same row as the recording material, and means for separating the printing means from the recording material when not printing.

In other words, by arranging a plurality of printing means divided into multiple rows and further providing a recording material conveyance roller in the same line as the printing means, it is possible to effectively arrange the printing means and the conveyance roller, and moreover, it is possible to effectively arrange the printing means and the conveyance roller when not printing. By separating the means from the recording material, the printing means does not become an obstacle to conveyance during non-printing, and good conveyance can be achieved.

Also, when not printing, the driving force to the conveyance roller is cut off,
Further, by conveying the recording material using the provided conveyance roller, good conveyance can be achieved.

The recording material used in the present invention may be of any kind, such as a heat-sensitive recording material. The heat-sensitive recording material may be any material, such as paper or plastic film, as long as printing can be performed by heating.

[Embodiment]

Embodiments of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a schematic diagram of a recording apparatus using thermal recording paper.

This recording device prints and records on AD version thermal paper based on an image signal processed by an image processing device (not shown) such as a computer.

The recording device includes a thermal paper storage section 10 that stores a roll of thermal paper, and a print recording section 40 that performs printing and recording on the thermal paper fed out from the storage section 10.

The thermal paper in the accommodation section IO has a width of 914 mm and is wound around the winding core 12 to a length of 200 m.

In the accommodating section 10, an upper housing 14 is rotatably supported by a shaft 16, and the accommodating section 10 can be opened when loading or unloading thermal paper.

The housing section 10 is provided with a motor 20 for rotationally driving a shaft 18 to which the winding core 12 is fixed, and the winding core 12 is rotationally driven by the motor 20 via a belt 22 stretched between the two. Ru. Further, in the storage section 10, a conveyance roller is provided for feeding out the thermal paper wound around the core 12 and conveying it to the front (hereinafter, "front" refers to the downstream direction in the traveling direction of the thermal paper, etc.). 24.26 and the conveyance roller 24,
A motor 28 is provided for rotationally driving 26. The conveyor rollers 24 and 26 are belts 3Q stretched between the ends of the conveyor rollers 24 and 26 and the output shaft of the motor 28.
It is rotationally driven by a motor 28 via. Further, a vertically movable dancer roller 32 is provided between the conveyance rollers 24 and 26 so as to be in contact with the upper surface of the thermal paper to adjust the tension of the thermal paper.

Note that the conveyance rollers 24 and 21 and the dancer roller 32 located above are provided integrally with the upper housing 14 and move together when the upper housing 140 rotates.

The print recording unit 40 includes two rows of thermal heads 42 and 44 arranged at a predetermined interval on the conveyance path of the thermal paper, and the thermal heads 42 and 44 are electrically connected to the image processing device. Printing is performed on thermal paper based on the image signal.

A platen roller 46.48 is provided below each thermal head 42.44. The platen roller 46.
48 is a gear 50, a one-way clutch 52, and a belt 5
4 and is rotated by a motor 56 as necessary. Also, the support members 60. of the thermal heads 42.44.
62 is rotatable about an axis 64.66, and an eccentric cam 68.70 abuts on the support member 60.62.

Further, the print recording section 40 is equipped with a conveyance roller 72 for conveying the thermal paper from the storage section 10 toward the thermal head 42, 44, and the conveyance roller 72 is connected to a gear 74, a clutch 76, and a belt. Motor 8 via 78
Rotationally driven by 0. In addition, the thermal head 42.
44 is provided with a conveyance roller 82 for accurately feeding the printed thermal paper from the print recording section 40, and the conveyance roller 82 is rotationally driven by a motor 86 via a gear 84. Here, the conveyance roller 82 located above
is supported by a rotating member 90 that rotates around the shaft 88, and by rotating the rotating member 90, it can easily come into contact with and separate from the conveying roller 82 below.

The upper housing 92 of the print recording section 40 is rotatably supported by a shaft 95, and the print recording section 40 can be opened when thermal paper jams during printing.

Note that the conveyance roller 72 located above is provided integrally with the upper housing 92 and moves together when the upper housing 92 rotates.

Further, the printing and recording section 40 is provided with a discharge table 94 for discharging the thermal paper after printing and recording.

Furthermore, a fixing device 98 consisting of a plurality of lamps 96 is provided above the discharge table 94 as necessary, and fixes the image onto the thermal paper by irradiating light onto the printing surface of the thermal paper. Furthermore, a cutter 100 for cutting the thermal paper is provided at the front end of the discharge table 94. The ejection table 94, fixing device 98, and cutter 100 are integrally constructed, and the ejection table 94 is rotatably supported by a shaft 102. When the recording device is not in operation, the ejection table 94 can be rotated clockwise in the figure to overlap the front surface of the print recording section 40.

To load thermal paper into this recording device, first
Then, the upper housing 14.92 of the print recording section 40 is rotated to expose the thermal paper conveyance path.

Next, the rotary member 90 in the print recording section 40 is rotated to separate the pair of conveying rollers 82 , position the front end of the thermal paper in the width direction, and sandwich it between the pair of conveying rollers 82 . After the thermal paper is sandwiched between the pair of conveying rollers 82, the storage section 10 and the upper housing 14 of the print recording section 40 are moved.
By closing 92, upper housing 14. "92
Each upper transport roller 24, 26.7 is integral with the
2 and conveyor rollers 24, 26, and 72 located below sandwich the thermal paper. In addition, in accommodation B10,
A dancer roller 32 contacts the upper surface of the thermal paper and applies a predetermined tension to the thermal paper.

In the vicinity of the storage unit 10 of the print recording unit 40, there is a storage unit IO.
Thermal paper D cut into sheets different from the inner thermal paper
An insertion opening 104 is provided for inserting the holder 10a along the inclined surface of the upper housing 14 of the accommodating portion 10. When inserting the thermal paper Da from the insertion opening 104, the thermal paper loaded in the print recording section 40 in advance is reversely conveyed backward by the reverse drive of the winding core 12 prior to the insertion of the thermal paper Da. It is retreated backward from the conveyance roller 72 near the insertion opening 1 (14).Then, the other thermal paper Da
When the transport roller 72 . is inserted, the conveyance roller 72 .
82 is driven, and the thermal paper Da is transported to the transport roller 8.
2, printing is performed by the thermal heads 42 and 44. When printing is performed on the thermal paper in the storage section 10 again, the conveyance rollers 24 and 26 in the storage section 10 are driven, and the thermal paper is conveyed to the print recording section 40 and bitten by the conveyance roller 82. Printing is performed by thermal heads 42 and 44.

Next, the printing section will be explained. FIG. 2 is a perspective view of the printing section.

The thermal heads 42 and 44 are arranged in two rows, and one line of printing is performed by the two rows of thermal heads 42 and 44. Two thermal heads 42 in the rear row
are arranged in the same row, and a conveyance roller 106 is arranged between the thermal heads 42. One thermal head 44 is arranged in the front row, and conveyance rollers 108 are arranged on both sides of the thermal head 44. Each thermal head 42,44 has a length 173 times the width of the thermal paper and prints at a density of 400 dots/inch. That is, in the three equal regions in the width direction of the thermal paper, the regions at both ends are printed by the rear thermal head 42, and the central region is printed by the front thermal head 44. Therefore, in printing one line of thermal paper, first the rear thermal head 42 prints on both ends, and after a predetermined period of time, the thermal paper below the rear thermal head 42 is printed by the front thermal head 42. When it reaches below 44,
The front thermal head 44 performs printing in the center.

The thermal paper during printing by the thermal head 42 and 44 is
The paper is transported by a transport roller 82 near the discharge section shown in FIG. Here, the conveyance rollers 106 and 108 in the same row as the thermal heads 42 and 44 are connected to the motor 56 via the one-way clutch 52, so when the conveyance roller 82 near the discharge section is overloaded during conveyance, roller 10
6.108 idles. On the other hand, during automatic paper feeding, the transport rollers 106 and 108 are rotationally driven to transport the thermal paper forward.

In addition, as shown in FIG. 1, the thermal head 42, 44
Eccentric cams 68 and 70 are in contact with the supporting members 60 and 62, and the eccentric cams 68 and 70 are rotated by a predetermined angle during automatic paper feeding or when not printing (such as during reverse conveyance). As a result, the thermal heads 42 and 44 are separated from the thermal paper.

FIG. 3 is a perspective view of the conveyance roller drive mechanism in the printing section.

The transport rollers 106 and 10g each have an axis of 140°142
The shafts 140, 142 have driven gears 144.
146 are fixed respectively.

The driven gears 144 and 146 each include a transmission gear 14.
8.150 are in mesh with each other, and the transmission gear 148 and 150 are driven by a drive gear 1 fixed to a shaft 152 driven by a motor 56.
It meshes with 54. Here, the driving gear 154 is fixed to the shaft 152 via a one-sided clutch 156 that transmits driving force only in the clockwise direction indicated by the arrow in the figure.

When automatically feeding thermal paper, the motor 56 rotates the shaft 152 in the direction of the arrow, and the one-sided clutch 156 is driven from the shaft 152.
and a drive gear 154, a speed change gear 148, and a driven gear 144.
．． Power is transmitted to the conveying rollers 106 and 108 via 146, and the thermal paper is conveyed forward.

Thermal paper during printing is carried out by a conveyance roller 82 near the discharge section.
At this time, the conveyance roller 10 of the print recording section
The motor 56 that rotationally drives the paper sheets 6 and 108 does not operate, and the conveyance rollers 106 and 108 rotate following the running of the thermal paper. Further, since a load is applied to the one-way clutch 156 in the opposite direction to that when transmitting the driving force, the one-way clutch 156 idles with respect to the shaft 152.

When the thermal paper Da cut into sheets is used, when the roll of thermal paper is conveyed in reverse, the motor 56 that rotationally drives the conveyance rollers 106 and 108 of the print recording section and the motor 20 in the storage section IO are used. Reverse conveyance is performed by rotationally driving the shaft 18 in the opposite direction. As a result, the conveyance rollers 106 and 108 of the print recording section rotate as the thermal paper runs in reverse, a load is applied to the one-way clutch 156 in the same direction as when transmitting the driving force, and the one-way clutch 156 is rotated together with the shaft 152. Rotate.

Therefore, the conveyance rollers 106 and 108 of the print recording section rotate following the thermal paper during print recording, so that the conveyance of the thermal paper is not adversely affected and reliable conveyance is guaranteed.

Note that when the thermal paper is automatically fed or reversely conveyed, the thermal heads 42, 44 are separated from the thermal paper, but when the thermal heads 42, 44 are printing, the conveyance roller 106, 108 may be configured to be spaced apart from the thermal paper. For example, by bringing an eccentric cam into contact with the shafts 140, 142 of the conveying rollers 106, 108 and rotating the eccentric cam, the conveying rollers 106, 108 can be moved to the thermal paper during printing or reverse conveyance. Can be separated.

〔Effect of the invention〕

According to the present invention, by arranging a plurality of printing means divided into a plurality of rows and further providing a recording material conveying roller in the same row as the printing means, it is possible to effectively arrange the printing means and the conveying roller. By separating the printing means from the recording material during non-printing, the printing means does not become an obstacle to conveyance during non-printing, and good conveyance can be achieved.

Also, when not printing, the driving force to the conveyance roller is cut off,
Further, by conveying the recording material using the provided conveyance roller, good conveyance can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of the recording apparatus, FIG. 2 is a perspective view of the printing section, and FIG. 3 is a perspective view of the conveyance mechanism of the print recording section. Symbols in the figure: 0, storage section 4.26.72.82 Conveyance roller 0, print recording section 2--dancer roller 2.44 Thermal head 6 Platen roller 0 Rotating member 2 Upper housing 3 Print recording section main body 4 Ejection table 8 Fixed fixing device 06.108 Conveyance roller 40.142.152 - Single shaft 44.146 Driven gear 48.150...Speed gear 56 Driving gear 1999 1 Temple Shingo Office F2 Lap' Shiri Q Incident display 1986 Patent Application No. 203293 2, Record of Title of Invention 5A Person who made the amendment 5, Date of amendment order: (Voluntary) Number of claims increased by the amendment: Contrast with the amendment: ``Detailed Description of the Invention'' in the specification ” Figure (1) Page 14 of the specification, lines 1 to 3 [Printed record...
・Delete "and". (2) On page 14, lines 5-9 of the same book, “Thus,...
··Rotate. ” to “At this time, the conveyance roller 106.1
The motor 56 that rotates 08 in the forward rotation direction is rotated in the opposite direction so that no load is transmitted from the thermal paper through the one-way latch 156. This is because the transmitted load cannot be completely interrupted only by using the one-way clutch 156. ” he corrected.

Claims (2)

[Claims] (1) A plurality of printing means provided in a plurality of rows having a predetermined main scanning length and sub-scanning along the recording material transport direction, a recording material transport roller provided in the same row as the printing means, and a recording material transport roller provided in the same row as the printing means, and the above-mentioned printing when not printing. A recording device comprising means for separating the means from a recording material. (2) The recording apparatus according to claim 1, further comprising a means for cutting off the driving force to the conveying roller when not printing, and a conveying roller disposed not in the same line as the printing means.