JPH075741U - Image recorder - Google Patents

Abstract

(57) [Summary] [Purpose] To enable desired image data to be printed out efficiently and appropriately on both the front and back sides of recording paper. [Structure] A printing unit 3 having a first printing position C1 and a second printing position C2, and a recording paper K printed at the first printing position C1 is printed on its back surface at a second printing position C2. And a transfer means for carrying

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an image recording apparatus of a type that prints desired image data on recording paper and records it, such as a printer used by being incorporated in a facsimile machine or a printer used by connecting to a computer or the like.

[0002]

[Prior art]

 Image recording devices that have various functions have been developed as image recording devices applied to facsimile devices, etc., but in the past, all of them have been designed to print out desired image data only on one side of recording paper. It was nothing more than a thing.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional apparatus, image data cannot be printed out on the opposite side (rear side) of the recording paper, so that both the front and back sides of the recording paper cannot be effectively used. Therefore, in the past, the consumption of recording paper was high, the cost required for recording paper was high, and the economy was poor, and it was not preferable from the viewpoint of saving paper resources.

The present invention has been proposed in view of the above points, and an object thereof is to enable desired image data to be efficiently and appropriately printed out on both front and back surfaces of a recording paper. .

[0005]

[Means for Solving the Problems]

 An image recording apparatus according to the present invention, which has been proposed to achieve the above object, includes a printing unit having a first printing position and a second printing position, and a recording paper printed at the first printing position. Is provided at a second printing position so as to be printed on the back surface thereof.

[0006]

[Action]

 In the image recording apparatus according to the present invention characterized by the above-mentioned configuration, after the image data is printed out on one side of the recording paper at the first printing position, this recording paper is conveyed to the second printing position and Image data is printed out on the back side. Therefore, desired image data is appropriately printed out on both sides of one recording sheet.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic sectional view showing an example of an image recording apparatus A according to the present invention configured as a printer applied to a facsimile machine or the like. This image recording apparatus A sequentially feeds out sheet-cut type recording paper K housed in a cassette case 1 one by one, and prints a desired image with a print head 3 using ink ribbons 2 on both front and back surfaces of the recording paper K. It is configured to print out data. Here, as the ink ribbon 2, it is preferable to use a multi-pass ink ribbon that can be repeatedly used a plurality of times, but the invention is not limited to this. In the feeding route of the ink ribbon 2, the section from the feeding roll 2a to the guide roll 4 is formed as a horizontal portion B 1, while the section from the guide roll 4 to the take-up roll 2b side is upward. It is set so as to be formed as the inclined portion B2.

The print head 3 sequentially prints out image data transferred from a CPU (not shown) or the like included in the image recording apparatus A line by line, and a thermal head is applied, for example. The print head 3 is supported by an arm 6 which is rotatable around a shaft 5 as a fulcrum so that the position of the print head 3 can be appropriately switched and changed between upper and lower predetermined positions. Specifically, in the print head 3, the print surface 3a faces downward to the horizontal portion B1 of the ink ribbon 2 (the position shown by the solid line in FIG. 1) and the print surface 3a has an inclined portion of the ink ribbon 2. The position is freely changeable so that it can be arranged at both the slightly facing position facing B2 (the position shown by the dashed line in FIG. 1). As a result, the image recording apparatus A can print out the image data at two positions indicated by arrows C1 and C2.

The image recording apparatus A has a feeding roller 7 for feeding the uppermost recording paper K in the cassette case 1 to the outside of the cassette case 1, and a feeding roller for feeding the recording paper K. A pair of upper and lower guide rollers 8 and a guide plate 9 for transferring the recording paper K fed out at 7 along the horizontal portion B1 of the ink ribbon 2 and a platen roller 10 facing the print head 3 are provided. There is.

Further, as means for transporting the recording paper K other than those described above, a horizontal guide plate 11 arranged on the front side (left side in the drawing) of the guide plate 9, a pair of upper and lower drive rollers 12, and this drive roller. A movable guide plate 13, a platen roller 14, and the like, which are arranged between both 12 and the guide roller 4, are provided. Among these, the drive roller 12 holds the recording paper K which is forwardly fed by the platen roller 10 (in the direction of arrow a), and is driven to rotate along the guide plate 11 so as to be further forwarded. When the trailing edge of the recording sheet K is detected by the sensor 15, the recording sheet K is reversely rotated and the recording sheet K is moved backward in the direction of arrow b. The movable guide plate 13 is provided so that the lower end side thereof can move up and down with the upper end portion 13a side as a fulcrum, and it always interferes with the transfer of the recording paper K from the guide plate 9 to the guide plate 11 side. The recording paper K is positioned above the transfer position so as not to cause the occurrence. However, when the recording paper K on the guide plate 11 is moved backward in the direction of the arrow b by the reverse rotation of the drive roller 12, the recording paper K is lowered as shown by the alternate long and short dash line in FIG. It is provided to operate so as to guide the transfer in an obliquely upward direction along B2.

Next, a usage example and an operation of the image recording apparatus A having the above configuration will be described. First, the feeding roller 7 is driven and rotated to feed the recording paper K accommodated in the cassette case 1 and to convey it along the guide plate 9. At that time, the image data is recorded at a position indicated by an arrow C1. To enable print output, the print head 3 may be set in the downward direction so that it faces the platen roller 10. As a result, desired image data can be sequentially printed out on the front side of the recording paper K.

Next, the recording paper K for which printing on the front side has been completed is nipped by the driving roller 12 arranged on the front side thereof, and is guided along the guide plate 11 to the front side in the arrow a direction. Be transferred. When the rear end R of the recording paper K is detected by the sensor 15, the drive roller 12 starts reverse rotation and the backward movement of the recording paper K in the direction of arrow b is started. At the same time, the lower end side of the movable guide plate 13 is lowered, so that the recording paper K is guided obliquely upward along the upper surface side of the movable guide plate 13 and along the inclined portion B2 of the ink ribbon 2. Will be transferred. On the other hand, the print head 3 is moved to the position of the arrow C2 where the print surface 3a faces the inclined portion B2 of the ink ribbon 2 at the time when the print output of the image data on the front surface side of the recording paper K is completed. Has been done. Therefore, according to this setting, the back surface side of the recording paper K transported along the inclined portion B2 of the ink ribbon 2 faces the print surface 3a of the print head 3, and the drive of this print head 3 causes The desired image data is also appropriately printed on the back surface of the recording paper K.

The feeding direction of the ink ribbon 2 at that time may be the same as the feeding direction of the ink ribbon 2 to the front surface side of the recording paper K, and it is not necessary to reverse the ink ribbon 2. Therefore, the drive mechanism of the ink ribbon 2 can be manufactured to have a simple structure. Further, the print output of the image data on the back surface of the recording paper K is started from the rear end portion R side of the recording paper K, but this is done in advance so that the image data transferred to the print head 3 can correspond thereto. It only needs to be processed, and no trouble will occur.

In the above-described embodiment, the case where the print output to both the front and back sides of the recording paper K is executed by the single print head 3 has been described as an example, but the present invention is not limited to this. For example, two print heads may be fixed and provided at predetermined positions to provide two print positions on the recording paper K. Further, the print head 3 is not necessarily limited to the type using the ink ribbon 2, and the specific type thereof is not limited. In addition, in the present invention, the specific construction of the transporting means for transporting the recording paper K is not limited to the construction of the above-described embodiment, and various design changes are possible.

[0015]

[Effect of device]

 As can be understood from the above description, according to the image recording apparatus of the present invention, desired image data can be efficiently printed out on both the front and back sides of the recording paper, so that the recording paper can be effectively used without waste. It has the advantage of being highly economical and highly desirable from the perspective of saving paper resources.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an example of an image recording apparatus according to the present invention.

[Explanation of symbols]

 1 cassette case 2 ink ribbon 3 printing head 3a printing surface 7 feeding roller 8 guide roller 9 guide plate 10 platen roller 11 guide plate 12 drive roller 13 movable guide plate 14 platen roller 15 sensor K recording paper A image recording device

Claims (1)

[Scope of utility model registration request] 1. A printing unit having a first printing position and a second printing position, and a recording paper printed at the first printing position is conveyed so as to be printed on the back surface at the second printing position. An image recording apparatus comprising: a transfer unit.