JPS6118742B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a photographic printer equipped with a mechanism for cutting rolled photographic paper (hereinafter referred to as "roll paper"). The present invention relates to a photographic printer equipped with a mechanism that can cut both prints and borderless prints that have no borders around the screen.

Prints printed (printed) by printers include bordered prints, which have a white square border around the screen, and borderless prints, which have no borders. For a long time, prints automatically printed in laboratories were usually bordered prints, but recently borderless prints have become popular, and labs are now able to supply both borderless and bordered prints. It started to be requested.

In the case of bordered printing, the screen is slightly smaller than the width of the roll paper, and a white space is left between adjacent screens, and the middle of this space is cut with a single-blade cutter. In the case of borderless printing, the paper is printed to the full width of the roll paper, with adjacent screens slightly overlapping, and the overlapping area is cut off using a two-blade cutter. The pitch of the screen is the same in all cases, but when trying to make these two types of cuts at one location, the relative relationship between the position of the blade and the position of the screen is slightly different in each case, so it is necessary to It must be moved or replaced, or the paper feed amount must be changed in two stages, which requires a complicated mechanism. That is,
When making both types of cuts with a single blade, the cut position for borderless prints is shifted by half the width of the overlap area compared to the cut position for border prints, and the cut position for borderless prints is shifted by half the width of the overlap area. It is necessary to cut in one operation. For this purpose, it is necessary to move the position of the single blade by the amount of the deviation, or to complicate the feeding of the roll paper. For example, in the case of borderless printing, the roll paper is moved by a certain pitch (this is exactly equal to the pitch of the screen), and in the case of borderless printing, the roll paper is moved by a certain pitch (the pitch) -
You must feed the paper by half of the overlap area and cut, then feed the paper by the width of the overlap area and cut. Also, when using both single-edged and double-edged blades, the blades must be replaced.

SUMMARY OF THE INVENTION An object of the present invention is to provide a photographic printer equipped with a cutter capable of cutting both types of prints with and without borders using an extremely simple mechanism.

In the printer of the present invention, a cutter capable of selectively cutting both bordered prints and borderless prints is arranged on the roll paper delivery side, which is a distance d shorter than the screen pitch L from the printing position, and When the paper is fed by a length equal to the distance d, the cutter is operated to cut the paper, and after this cutting, the roll paper is fed by a length equal to (L-d) to perform the next printing. It is characterized by this.

The above cutter consists of an upper blade and a lower blade, one of which is movable up and down. and two blades for borderless printing having a width equal to the overlap area, with the center of the blade being located, and these blades can be selectively moved to the cutting position, and the lower blade is The edge of the blade is located on the center line, and a single blade for edged printing is combined with the single blade for edged printing of the upper blade, and two blades are arranged on both sides of the edge of the upper blade, sandwiching the center line, 2 for borderless printing in which the two blades for borderless printing of the upper blade are inserted;
These cutting blades can be selectively moved to cutting positions.

The roll paper is cut along the center line of the cutting position by the upper blade and the lower blade, which are the single blade for edgeless printing, and the roll paper is cut along the center line by the upper blade and the lower blade, which are the two blades for borderless printing. On each side of the position, a width equal to half the length of the overlapping part of the screen is cropped at once. Therefore, borderless prints and bordered prints can be cut by simply moving the upper and lower blades for borderless printing or bordered printing to the cutting positions.
Therefore, there is no need to change the feed amount of the roll paper, move the position of the blade, or replace the blade, making the mechanism extremely simple and easy to operate.

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the cutting position of a print with a border, and screens A, B, C, and D having a border 2 are printed on a roll paper 1. The lengths of the respective prints are a, b, c, and d. For example, between screens B and C, the prints are cut along cut line 3 at the positions indicated by the arrows. This cut is made with a single blade.

FIG. 2 shows the cutting position of a borderless print, in which borderless screens A, B, C, and D are printed on a roll paper 1 with an overlap portion 4. The lengths of the respective prints are a, b, c, and d. For example, between screens B and C, the prints are cut along cut lines 5, 5 at two positions indicated by arrows, and the overlapping portion 4 is cut off.

In either case of FIG. 1 or FIG. 2, the print pitch (the screen pitch) of the printer corresponds to the length shown by L in the figure, and is equal in both cases.

FIG. 3 is a schematic diagram of the printer of the present invention.
The roll paper 1 is intermittently transported in the arrow direction by a pair of rollers 10, 11 and 12, 13 arranged one above the other. Said roller 1
A disk 15 is fixed to the shaft 14 of 1. This disc 15 has a plurality of slits 16 formed at equal intervals in the circumferential direction. When the disk 15 rotates, the light from the light source 17 passes through the slits 16 and enters the light receiver 18, thereby generating pulses corresponding to the number of slits. These pulses are input to a preset counter in which a predetermined number of pulses is set in advance and counted. As a result, the amount of feed of the roll paper 1 is measured, and the roll paper 1 is transferred by a predetermined amount. Note that if a pulse motor is used, these disks 15 and the like can be omitted. Further, the transfer amount can also be detected from the transfer time using a timer.

A print mask 1 is placed between the rollers 10 and 12.
9 is placed. The portion placed on this print mask 19 is exposed to light passing through a printing lens 20.

A cutter composed of an upper blade 21 and a lower blade 22 is arranged on the roll paper delivery side away from the edge of the print mask 19 by a distance d shorter than the pitch L of the screen. The upper blade 21 and the lower blade 22 are equipped with blades for printing with a border and for printing without a border, so that they can selectively cut a print with a border and a print without a border.

4 and 5 are side views of the cutter. The upper blade 21 is a single blade 21a for edged printing, with the edge of the blade located on the center line 23 of the cutting position.
and a two-blade edgeless printing blade 21b whose centers are located on the center line 23 and whose width is equal to the width of the overlap portion 4 are spaced 180 degrees apart on a rotatable shaft portion 21c. It is installed in one piece.

The lower blade 22 is a two-blade 22a for edged printing with the edge of the blade located on the center line 23 of the cutting position.
, two blades are arranged on both sides of the center line 23 separated by the overlap portion, and the upper blade 2
The two-blade 22b for borderless printing into which the two-blade 21b for borderless printing 1 is inserted is the shaft portion 2.
2c.

When converting the cutter for printing with edges and for printing without edges, rotate the blade 180 degrees around the shaft portions 21c and 22c. This results in
In the case of a bordered print, the cutting line coincides with the center line 23 and is cut midway between screens A and B. In the case of borderless printing, the cutting lines are located at positions shifted by /2 on both sides from the center line 23, and the overlapping portions 4 of the screen are cut out at the same time.

Next, the operation of the apparatus of the present invention having the above configuration will be explained. When the roll paper 1 is exposed to light through the printing lens 20, for example, a bordered screen B is printed. After printing, the feed rollers 10 to 13 start rotating and transport the roll paper 1. During this transfer, since the disk 15 rotates in synchronization with the feed roller 11, the slit 16 opens and closes the optical path connecting the light source 17 and the light receiver 18. This generates pulses depending on the number of slits.
This number of pulses is counted by a preset counter, and the amount of conveyance of the roll paper 1 is measured. When this length measuring device detects that the roll paper 1 has been transported by a distance d, the transport of the roll paper 1 is stopped and the upper blade 21 starts descending. When the upper blade 21 descends, the roll paper 1 is cut from the midline between the screens A and B, thereby separating the bordered print having the screen B.

Next, the feed rollers 10 to 13 start rotating again and transfer the roll paper 1 by (screen pitch L-d). After this transfer, printing is performed again. These steps are then repeated in sequence.

When printing a borderless screen, remove the print mass and print in the same sequence as above. As a result, a partially overlapping screen as shown in FIG. 2 is obtained. At this time, the upper blade 21 and the lower blade 22 are rotated around the shaft parts 21c and 22c.
If the two edges are rotated 180 degrees, the center of the overlap part 4 will match the center line 23 of the cutting position, so if the upper blade 21 is lowered, the two blades 21b for borderless printing of the upper blade 21 will align with the center line 23 of the cutting position. It is inserted between the two edgeless printing blades 22c of the pair of lower blades 22, and the overlapping portion 4 is cut off.

According to the present invention having the above configuration, the cutter is provided on the roll paper delivery side separated by an arbitrary distance d smaller than the screen pitch from the printing position, and two cutters are provided for borderless printing.
The single blade is offset from the cutting position of the single blade for bordered prints by half the width of the overlap area for borderless prints, so both borderless and borderless prints should be cut in exactly the same way. This makes the operation and mechanism simple.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the state of the bordered print printed on roll paper before cutting, Figure 2
The figure is a plan view showing a borderless print, Fig. 3 is a perspective view schematically showing the printer of the present invention, Fig. 4 is a side view of a cutter showing a state in which a bordered print is cut, and Fig. 5 is a borderless print. FIG. 3 is a side view of the cutter showing a state in which the print is cut. 1...Roll paper, 2...Edge, 3...Cut line, 4...Overlapping part, 5...Cut line, A, B, C, D...Screen, L...Screen pitch,...Overlap Part width, 10~
13...Feed roller, 15...Disk, 16...Slit, 19...Print mask, 20...Printing lens, 21...Upper blade, 22...Lower blade, 21a,
22a... Cutting blade for edged printing, 21b,
22b...Cutting blade for borderless printing, 21c,
22c...shaft portion, d...any distance shorter than the screen pitch.

Claims (1)

[Claims] 1. A printer that continuously prints photographs on a roll of photographic paper, which has one blade for edged printing whose edge is located on the center line of the cutting position, and two blades on the center line of the cutting position. An upper blade that has two blades for borderless printing where the center of the blade is located and allows these blades to be selectively moved to the cutting position, and an upper blade for borderless printing where the edge of the blade is located on the center line. A double blade for borderless printing, in which two blades are arranged on both sides with the center line in between, and the two blades for borderless printing of the upper blade are inserted. It consists of a lower blade that can be selectively moved to the cutting position, and the upper blade has one blade for printing with edges, the lower blade has one blade for printing with edges, or the upper blade has two blades for printing without edges. A cutter that combines a single blade and a lower blade with two blades for edgeless printing so that they interlock, and cuts the print by moving at least one of the upper blade or the lower blade up and down perpendicular to the print. A photo printer characterized by the following features: 2. A patent claim characterized in that the upper blade and the lower blade are provided on a rotatable shaft, and by rotating the shaft, the cutting blade can be selectively moved to a cutting position. A photographic printer according to item 1. 3. In a printer that continuously prints photographs on a roll of photographic paper, one blade for edged printing has the edge of the blade located on the center line of the cutting position, and the center of two blades is located on the center line. an upper blade comprising two blades for borderless printing and capable of selectively moving these blades to a cutting position; and a single blade for borderless printing, the edge of which is located on the center line; Two blades are arranged on both sides sandwiching the center line, and two blades for borderless printing are inserted into which the two blades for borderless printing of the upper blade are inserted, and these blades are selectively moved to the cutting position. It consists of a movable lower blade, and the upper blade has a single blade for bordered printing, and the lower blade has a single blade for borderless printing, or the upper blade has two blades for borderless printing, and the lower blade has two blades for borderless printing. It is equipped with a cutter in which two blades for borderless printing are combined so that they interlock, and at least one of the upper blade and the lower blade is moved up and down perpendicular to the print to cut the print. pitch, d: any distance shorter than the screen pitch, n: any integer (0, 1, 2...)
When , the distance from the print position (nL + d)
A cutter capable of selectively cutting both bordered prints and borderless prints is placed on the photographic paper feeding side, which is separated by a distance equal to the distance d. when it is detected that the roll of photographic paper has been fed by the length, actuating the cutter to cut the print;
A photographic printer characterized in that the photographic printer is configured to then print by a length equal to (L-d) and then perform the next print.