KR20110011796A - Photo printer with paper decurling device - Google Patents

Abstract

PURPOSE: A photo printer in which a de-curling device of a printing paper is equipped for improving the quality of the printing is provided to improve the stability of the printing paper discharge by discharging the printing paper in a roll state. CONSTITUTION: A pinch roller is touched with a capstan(110). A vertical direction center line and a common normal form the pinch angle of the predetermined angle. A printing paper of a curled state is de-curled when the pinch roller passes through. A de-curling frame(120) transfers the printing paper in a thermal printing head direction through a bending surface of the de-curling frame.

Description

Photo printer with decal device for printing paper {Photo printer with paper decurling device}

The present invention relates to a photo printer that prints images of a digital camera, a computer, and a mobile storage device in high quality by using a cartridge in which both printing paper and a thermal transfer ribbon are stored in a roll shape. It is excessive to a photo printer equipped with a decal device of a printing paper configured to be excellent in discharge stability by de-curl printing and printing the curved printing paper in a printing process.

In recent years, in line with the rapid spread of digital cameras, photos taken with digital cameras have not been printed, but have been stored on digital storage media such as memory cards, CDs, hard disks, or on the Internet homepage. Background Art Digital photo frames with display panels are widely used to download images from digital storage media or Internet homepages for immediate display.

In recent years, digital photo frame printers equipped with a photo-only printer capable of printing an image on display immediately without a computer while displaying an image have been rapidly spreading.

The inventors of the present invention constitute a cartridge in which both the thermal transfer ribbon and the printing paper of a digital photo frame printer are accommodated, and the "digital photo frame with a printer" capable of printing an image being displayed on a roll-shaped continuous printing paper inside the cartridge. Filed in Patent Application No. 2008-18387.

The "digital picture frame with a printer" is a display panel 11 for displaying an image on the front as shown in Figure 1 and 2, the cartridge mounting portion provided with a cartridge door 12 on the side of the body 13 is formed, the cartridge mounting portion 13 is configured to be inserted into the cartridge 100, the thermal transfer ribbon and the continuous printing paper in the form of a roll is accommodated.

The "digital picture frame with a printer" as described above is printed using a thermal transfer ribbon on a continuous printing paper inside the cartridge 100 when printing the image being displayed on the display panel 11, and cut and discharged it. The printing paper is curled on the printing paper because the printing paper was stored in the inside of the cartridge 100, and when the image is printed on the curled printing paper, the end face of the printing paper is concave. There was a problem that the discharge stability such as being discharged in a curl state and falling to the front of the digital picture frame, such as falling.

The present invention has been made to solve the above problems, when printing the image on the printing paper accommodated in the form of a roll inside the cartridge of the photo printer by de-curl printing paper to print and discharge, It is an object of the present invention to provide a photo printer equipped with a decal device for printing paper configured to have excellent discharge stability of printed printing paper.

In order to achieve the above object, the present invention is a photo printer for printing an image on a continuous printing paper in the form of a roll accommodated in the cartridge, the capstan and the pinch roller for controlling the transfer of the printing paper is configured to contact, the pinch roller Is in contact with the capstan to form a pinch angle of a predetermined angle.

At this time, the pinch angle is preferably 40 ° ~ 60 °.

At this time, the pinch roller is in contact with the capstan, the pinch roller is configured to contact and press the capstan with a predetermined force.

In addition, the direction in which the pinch roller presses the capstan with a predetermined force is preferably configured to form a deviation angle between the common normal line between the capstan and the pinch roller and an angle of 6 ° to 8 °.

In addition, it is preferable that spikes are formed on the surface of the capstan.

In addition, it is preferable that a decal frame is further included on one side of the capstan.

In addition, one side of the capstan is configured to further include a guide paper.

At this time, the area where the printing paper and the capstan contact each other has the same area that both sides contact with each other based on the common normal line of the pinch roller.

A photo printer equipped with a decal device for printing paper according to the present invention is excellent in discharge stability of printing paper by decaling and discharging printing paper wound in a roll state.

In addition, the printing quality is excellent by preventing the color shift phenomenon generated in the process of decalating the printing paper.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

3 is a cross-sectional view of the cartridge mounted on the photo printer, Figure 4 is a view showing the printing paper drive unit, Figure 5 is a view showing the pinch roller and capstan, Figure 6 is a pinch of the discharge process of the printing paper FIG. 7 is a view showing a roller and a capstan, and FIG. 7 is a view showing a pinch roller and a capstan in the printing process of a printing paper, and FIG.

When the cartridge 100 is mounted in the photo printer as shown in FIG. 3, the thermal recording head 105 is positioned between the supply reel 103 and the take-up reel 104 of the cartridge 100.

The cartridge 100 is a roll-shaped continuous printing paper 101 is received, the thermal transfer ribbon 102 is wound on the supply reel 103, the thermal transfer ribbon (102) is a thermal recording head (when printing) It is configured to be printed while passing through the lower portion of the 105, wound on the take-up reel (104).

The photo printer is a thermal transfer printer. In general, the thermal transfer printer heats the thermal recording head 105 to the thermal transfer ribbon 102 to which the dye is applied so that the dye on the surface of the thermal transfer ribbon 102 is printed on the printing paper 101. ) To be transferred. The thermal transfer printer as described above generally prints three colors of yellow (Y), magenta (M), and cyan (C) sequentially to print an image on the printing paper 101.

The thermal recording heads 105 are arranged in a line with fine heating elements, and are configured to individually generate heat for each heating element in response to a signal from the controller.

Looking at the printing process in more detail, first, the printing paper 101 of the cartridge 100 by the user's printing operation through the printing paper slit 106, the end of the printing paper 101 and the pinch roller 111 It is transferred to the capstan 110 and passes through the discharge roller 114 and the discharge driven roller 115 through the thermal recording head 105 and the platen 113 to the outside of the discharge port 14 of the printing paper 101. The tip is ejected.

As described above, in the state in which the end of the printing paper 101 is discharged out of the outlet 14, the capstan 110 is reversely rotated to transfer the printing paper 101 discharged out of the outlet 14 back inward. The heat-sensitive recording head 105 generates heat to print the yellow (Y) color of the thermal transfer ribbon 102 on the printing paper 101.

When the yellow (Y) color printing is completed as described above, the capstan 110 is rotated forward to discharge the printing paper 101 printed with the yellow (Y) color out of the outlet 14 and the capstan 110 is rotated again. The printing paper 101 discharged out of the discharge port 14 is transferred inward, and the thermal recording head 105 generates heat to print the magenta (M) color of the thermal transfer ribbon 102 on the printing paper 101. .

When the magenta (M) color printing is completed as described above, the capstan 110 is rotated forward to discharge the printing paper 101 printed with yellow (Y) and magenta (M) colors out of the outlet 14 and again the capstan 110 ) Reversely rotates and transports the printing paper 101 discharged out of the discharge port 14 inward, and at this time, the thermal recording head 105 generates heat to produce the cyan color of the thermal transfer ribbon 102. Printing process is completed.

When the printing process is completed as described above, the printing paper 101 is cut by the cutter 112 installed between the capstan 110 and the platen 111, and the printed printing paper 101, that is, the image is printed. The paper 101 is discharged to the discharge port 14 by driving the discharge roller 114.

Through the printing process as described above is to print the image on the printing paper 101 in the photo printer.

By the way, since the printing paper 101 accommodated in the cartridge 100 is accommodated in roll form, the printing paper 101 basically has a certain degree of curl. If the image is printed in a curved state as described above, the discharged printing paper 101 is discharged in a concave shape. If printing and discharging several sheets, the discharged printing paper is entangled with each other and poured out of the stacker of the discharge port. It is a factor of deterioration of stability.

That is, as shown in FIG. 4, the driving unit for controlling the transfer of the printing paper 101 in the printing process is the capstan 110.

At this time, the present invention, as shown in Figure 5 to improve the discharge stability of the printing paper 101, the pinch roller 111 to be in contact with the capstan 110, the vertical center line and the capstan (110) of the capstan (110) By forming the common normal L between the 110 and the pinch rollers 111 to form a pinch angle α of a predetermined angle, the capstan 110 in which the curled printing paper 101 is in contact with the pinch angle α as described above. ) And the decal (de-curl) when passing through the pinch roller 111 so that the printing paper 101 passing through the capstan 110 and the pinch roller 111 is convex, that is, decal. .

In addition, the pinch angle α is preferably an angle of 40 ° to 60 °. When the pinch angle α is less than 40 °, the amount of printing paper 101 decal is small, and the pinch angle α is smaller than 40 °. This is because the amount of decal of the printing paper 101 is too large when the temperature exceeds 60 °, and the discharge stability of the printing paper 101 is inferior.

At this time, the pinch roller 111 is a pinch roller arm 108 for supporting the pinch roller 111 as shown in Figure 3 and 5 is hinged to the port printer frame 109, the pinch roller arm ( 108 is fixed to the frame of the photo printer is configured to contact the pinch roller 111 by pressing the capstan 110 with a predetermined force by the elasticity of the spring 107.

As described above, when the printing paper 101 passes through the pinch roller 111 and the capstan 110 while the pinch roller 111 presses the capstan 110 by a predetermined force, the printing paper 101 decals more effectively. do.

In addition, as described above, when the pinch roller 111 presses the capstan 110 with a predetermined force, a common normal line between the pinch roller 111 and the capstan 110 is as shown in FIG. 5. The printing paper 101 is decaled more effectively by configuring it to deviate from L and a predetermined deviation angle β.

The force of the pinch roller 111 to press the capstan 110 is suitable 500gf ~ 1500gf, the pinch roller 111 is the direction of the force to press the capstan 110 and the pinch roller 111 and the capstan 110 The deviation angle (β) of the common normal (L) of 6) is appropriately 6 ° to 8 °. If the deviation angle (β) is less than 6 ° and the deviation angle (β) exceeds 8 °, 101) is too small or too much to be decaled.

6, the decal frame 120 is configured on one side of the capstan 110, and the decal frame 120 is formed such that the curved surface of the decal frame 120 is opposite to the capstan 110. Install it. 6 shows a state in which the printing paper 101 is conveyed toward the discharge port 14 by the forward rotation of the capstan 110.

In the decal frame 120, the printing paper 101 passes through the pinch roller 111 and the capstan 110 and is transferred in the correct direction toward the thermal recording head 105 through the curved surface of the decal frame 120. The printing paper 101 passes through the curved surface of the decal frame 120 and more efficiently decals.

As shown in FIG. 8, the guide 130, which is a paper on which the protrusion 131 is formed, is formed below the curved surface of the decal frame 120.

As described above, yellow (Y), magenta (M), and cyan (C) colors are sequentially printed by repeating the forward or reverse rotation of the capstan 110 in the process of printing the printing paper 101. In the state where the paper guide 130 is not present, that is, when the pinch roller 111 and the capstan 110 are in contact with each other at a pinch angle α to decal the printing paper 101, as shown in FIG. The printing paper 101 driving contact area A of the capstan 110 when the 110 rotates forward is greater than the printing paper 101 driving contact area B of the capstan 110 when the capstan 110 reverses. Becomes small.

As described above, when the capstan 110 rotates forward, the printing paper 101 driving contact area A of the capstan 110 rotates when the capstan 110 reversely rotates. When the area B is smaller than the area B, the force of the capstan 110 conveying the printing paper 101 becomes relatively large when the capstan 110 rotates in reverse than when the capstan 110 rotates forward. When the image is printed on the printing paper 101, the capstan 110 repeats the forward rotation and the reverse rotation several times. As described above, when the capstan 110 rotates in reverse than the forward rotation, the printing paper of the capstan 110 is When the force for conveying 101 is relatively large, the capstan 110 is rotated forward and the length of the print paper 101 conveyed to the discharge port 14 side and the cap paper 110 are reversed and rewound the print paper 101 ), The yellow (Y), magenta (M), and cyan (C) colors are not printed at the correct position, but the color shift phenomenon occurs due to the color shift phenomenon. Degrading problems may occur.

In order to prevent the color shift phenomenon, as shown in FIG. 8, a guide 130, which is a paper on which a protrusion 131 is formed, is formed at a lower portion of the curved surface of the decal frame 120, thereby providing a protrusion of the paper 130. As the 131 lifts the printing paper 101 to reduce the driving area of the printing paper 101 of the capstan 110 when the capstan 110 reversely rotates, the pinch roller 111 as shown in FIG. 8. And the driving areas A 'and B' on both sides of the capstan 110 and the printing paper 101 are centered around the common normal L of the capstan 110 and yellow (Y) and magenta (M). ), The cyan (C) color is printed at the correct position, it is possible to print high-quality prints.

In addition, the spike 116 is formed to protrude on the outer surface of the capstan 110 so that the printing paper 101 is accurately controlled when the capstan 110 rotates.

In the above, the photo printer provided with the decal apparatus of the printing paper by this invention was demonstrated. It will be understood by those skilled in the art that the technical features of the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, and the meanings of the claims and All changes or modifications derived from the scope and equivalent concepts thereof should be construed as being included in the scope of the present invention.

1 is a perspective view of a digital picture frame equipped with a printer.

Figure 2 is a perspective view showing a state in which the cartridge is mounted to the photo printer.

3 is a sectional view of a state in which a cartridge is mounted in a photo printer.

4 is a view showing a printing paper drive unit.

5 shows a pinch roller and a capstan;

6 is a view showing the pinch roller and the capstan in the process of discharging the printing paper.

7 is a view showing a pinch roller and a capstan in the printing process of printing paper;

8 is a view showing a state where a paper-in guide is configured.

<Explanation of symbols for the main parts of the drawings>

11: display panel

12: cartridge door

13: cartridge compartment

14 outlet

100: cartridge

101: printing paper

102: thermal transfer ribbon

103: supply reel

104: reel

105: thermal recording head

106: printing paper slit

107: spring

108: pinch roller arm

109: hinge

110: capstan

111: pinch roller

112: cutter

113: Platen

114: discharge roller

115: discharge driven roller

116 spike

120: decal frame

130: paper-in guide

131: stone

L: common normal

α: pinch angle

β: deviation angle

A, A ': Printed paper drive contact area of capstan when capstan rotates forward

B, B ': Capstan's printing paper drive contact area when the capstan is reversed

Claims (8)

In the photo printer for printing an image on a continuous printing paper in the form of rolls stored in the cartridge, Capston and the pinch roller is in contact with the printing paper is configured to contact, the pinch roller is a photo printer having a decal device of the printing paper, characterized in that configured to be in contact with the capstan forming a pinch angle of a predetermined angle. The method of claim 1, The pinch angle is a photo printer with a decal device of the printing paper, characterized in that 40 ° ~ 60 °. 3. The method of claim 2, The pinch roller is in contact with the capstan, the pinch roller is a photo printer with a decal device of the printing paper, characterized in that configured to be in contact with the capstan by a predetermined force. The method of claim 3, wherein The photo printer equipped with a decal device for printing paper, wherein the pinch roller presses the capstan with a predetermined force to form a deviation angle between the common normal line between the capstan and the pinch roller and an angle of 6 ° to 8 °. . The method of claim 1, The photo printer with a decal device of the printing paper, characterized in that the spike is formed on the surface of the capstan. The method of claim 1, Photo printer with a decal device of the printing paper, characterized in that further comprises a decal frame on one side of the capstan. The method of claim 1, The photo printer with a decal device of the printing paper, characterized in that further comprises a guide that is paper on one side of the capstan. The method of claim 7, wherein The area of the printing paper and the capstan is in contact with the decal device of the printing paper, characterized in that the area in contact with the capstan on both sides on the basis of the common normal of the pinch roller.

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