JPS6076347A - Checkup procedure for printed matter and device therefor - Google Patents

Abstract

PURPOSE:To arrange so that defective print may be detected, if such event occurred, by providing ''read-out'' marks turning synchronized to each code printing plate and a counting mark turning synchronized to a printing barrel when printed matter such as lottery is checked. CONSTITUTION:''Read-out'' marks 43-48 turning synchronized to each code printing plate corresponding to a code 4C' of each subsection 4A-4C on a printing barrel and a counting mark 49 turning synchronized to a printing barrel are provided. Then ''read-out'' marks are sensed by a ''read-out'' mark sensor 21 causing a pulse signal to be generated. After a regular printing process was initiated at the time of printing commencement at code 4C, a counting mark is sensed by a counting mark sensor 20 and ''read-out'' mark pulse begins to be counted. When a predetermined number of pulses has been reached, code checkup is commenced by a code checkup means 19 and then code checkup is started using a code involved in a regular printing process. Thus it is possible to carry out the checkup without fail, if missing paper and defective printing occurred.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for inspecting printed matter such as treasure troves, securities, etc., in which codes such as numbers are printed on each of a number of small sections distributed in the longitudinal direction of a paper roll. It is something.

When printing this type of printed material, if there is a malfunction or poor adjustment of the printing device, defects such as incorrect numbers or half-returns may occur in the printed material, so it is essential to inspect the printed material after printing.

Conventionally, these printed materials have been visually inspected manually, but such visual inspections not only result in omissions but also are extremely inefficient. . In order to eliminate these shortcomings, the code printed on the printed material is read by photoelectric conversion means using a camera, and the corresponding electrical signal is compared with the electrical signal of the standard printed code. Automatic inspection methods have been proposed that determine whether there are defects such as incorrect numbers, and display or print the results on a display, printer, alarm, or the like.

For example, in the invention related to Japanese Patent Application No. 56-178333, a reading mark is printed on a roll of paper, and the mark is detected as means for starting an inspection.

However, in such a case, if the paper roll is missing or the marks are poorly printed, the number of pulses may be counted incorrectly. As a result, it is necessary to start with a test print again, which may result in a loss of working time. In order to eliminate the problems described in item 1 with conventional devices, it is necessary to improve the quality of the paper and print marks appropriately.

However, these improvements have the drawbacks of high costs and the addition of unnecessary work operations.

The present invention aims to eliminate the above-mentioned drawbacks of the conventional method and provide a method and apparatus for inspecting printed matter that can be reliably inspected even when sheets of paper are missing or marks are poorly printed. This is an I-specific thing.

The present invention provides a printed matter inspection method for inspecting the quality of a code printed in a large number of small sections that are repeatedly distributed in the same pitch distribution for each sheet of a certain sheet length in the longitudinal direction of a web. A reading mark that rotates in synchronization with each code printing plate corresponding to the code of each small section on the cylinder and a starting mark that rotates in synchronization with the printing cylinder are provided, and the reading mark is detected and read. A pulse is transmitted to start printing the code, and after the actual printing process is started, the starting mark is detected by the starting mark detecting means and counting of the reading mark pulses is started, and when a predetermined number of pulses N is reached. This is a printed matter inspection method and apparatus, characterized in that the code inspection by the code inspection means is started, and the code inspection is started from the code printed by the final printing.

The present invention will be explained with reference to the drawings based on examples.

=6- In Fig. 1(,), C) is a web of paper, and it is assumed that the paper moves in the direction of arrow 2. This paper roll 1 has a certain sheet length L
A large number of small sections 4A, 5A, 6 are repeatedly distributed with the same pitch distribution in the direction of the hand for each sheet 3A, 3B, 3C of o.
A, 4B, 5B, 6B, 4C.

The subdivisions 4A, etc. are divided into sections 5C, 6C, etc., and symbols, numbers, etc. 4C', 5C' are attached to each of the subdivisions 4A, etc.

6C' (Fig. 1 1), etc. are printed. Since the pitch distribution of each subdivision within each sheet is the same,
The small sections located at similar positions on each sheet are arranged at a pitch of the sheet length Lo. For example, the distance between each of 4A, 4B, and 4C is 5A.

The distance between each of 5B and 5C is equal to the sheet length 1-o.

The process 1 of printing and inspecting such a web 1 will be explained with reference to FIG.

11 is a feeder that unwinds the web 1 from the roll 12 and supplies it to the following processes; 13 and 14 are a pattern printing unit that prints designs; 15 is a code printing unit that prints codes such as numbers; The first, second and third compartments of the sheet (e.g. 4 A, 5 A
.

It has a first printing cylinder 16 for printing GA) and a second printing cylinder 17 for printing fourth, fifth, large and small sections. 18 is an impression cylinder, and the above-mentioned sheet length Lo is the first or second impression cylinder 16 or 17.
The circumference of 19 is a code inspection means having a detection means 42 such as a television camera as an optical detection means which is linked to a strobe device; 20 is a starting mark sensor as a starting mark detecting means for sensing a starting mark to be described later; 2
Reference numeral 1 denotes a reading mark sensor as a reading mark detection means for sensing a reading mark, which will be described later, and transmits a reading mark pulse every time a mark is read. 22
is an inspection unit, 23 is a sensor that issues a signal to start printing (for example, an eccentric cam movement sensor), 24 is a cutter unit, and 25 is a stack! It is.

Details of the code checking means 19 are shown in FIGS. 3 and 4. In the code inspection means 19, optical detection means 42 such as three television cameras are mounted on the frame 34 via an X table 35 and a Y table 36! I suspended, roll 1
It is possible to move 8- in a plane parallel to the plane of . For the detection means 42, an imaging range 37 as shown in FIG. The quality of printing of the code is determined by comparing it with the standard printed code using means or the like.

A limit frame 39 is defined within this imaging range 37, and when the web 1 meanders, expands and contracts and a part of the reference numeral 38 deviates and protrudes from the limit frame 39 as shown in FIG. 6, the amount of deviation occurs. is detected, and according to the amount of deviation, the X table 35 and Y table 36 are operated by a motor 40, 41 such as a pulse motor or a servo motor, and a screw mechanism to move the detection means 42, and the reference numeral 38 is moved to the limit frame 39. (I will capture it again and perform an inspection).

In this case, even if the reference numeral 38 exceeds the limit frame 39, it is still within the imaging range 37 when the amount of deviation is detected, so that normal inspection can be continued.

Starting mark, reading mark, starting mark detection -9= The means and reading mark detection means will be explained.

In FIGS. 7 and 8, 50 is a printing cylinder, and a rotating shaft 51
, and prints a code on the web 1 between it and the impression cylinder 18 .

Reference numerals 52 and 53 denote a first rotary plate and a second rotary plate which are fixed to the rotary shaft 51 and rotate in synchronization with the printing cylinder 50, and the first rotary plate 52 has a reading mark (see FIG. 9). A starting mark (see FIG. 9) is attached to the two-rotation plate 53.

FIG. 9 is a developed view of the printing drum 50, the first rotary plate 52, and the second rotary plate 53 as viewed from the inside, and is a developed view developed to the left from the point where they contact the web 1 in FIG. , and the -circumference is the sheet length.

is equal to

4 C, 5C, 6C... indicate small sections of printing, 54
', 55', 5Ei', 57', 5B', 5
9' are code stamp plates 54.5B, 57, 58, 59 (Fig. 10) for printing codes for each subdivision.
(This is called a virtual code stamp plate), and at a position synchronized with these code stamp plates, a reading mark 43.44°4 is placed on the first rotary plate 52 at 10- as shown in FIG.
5.4 Ei, 47.48 are provided. 43'.

44', 45', 4 Ei', 47', 4 B
' is a developed image of these reading marks, which is called a virtual reading mark.

Furthermore, a starting mark 49 is placed on the second rotary plate 53 at the position where it will be.
is attached. 49' is its expanded image, which is called a virtual starting mark.

Reading marks 43, 44...Start mark, 49 are marks that utilize different reflectances such as black and white marks, or marks that utilize transmitted light such as slits, and use optical sensors such as photocells as sensors. A mark using an object, a mark using unevenness, or a mark using a magnetic material, and a mark using an electric or electromagnetic sensor as a sensor, etc. are applied.

eo and e+ are referred to as reference lines.

The development pattern indicated by a solid line in FIG.
As it rotates counterclockwise, it gradually moves to the right. Then, after exactly one rotation, the seat is shifted to the right by Lo, the seat length, to 5 as shown by the two-dot chain line.
0'', 52'', 53''. In other words, the pattern 50'' is the current position of the pattern 50' - before the rotation. In this way, the currently occurring virtual development pattern (for example, the virtual printing cylinder 50', the virtual first rotary plate 5
2', virtual second rotating plate 53'), -
The state in which the pattern is currently perforated before rotation is referred to as a virtual printing drum 50'', a virtual first rotating plate 52'', and a virtual second rotating plate 53''.The patterns before two rotations are referred to as 50'', 52'', 53'', etc. I will write it down.

However, 43', 43'', 44', 44'', 45
'.

45'', 46', 4B'', 47', 47'', 48'
.

48'' is called a virtual reading mark, and 49' and 49'' are called virtual starting marks.

These virtual marks are virtual read marks 43',
44', 43'', 44''... seem to be marks virtually printed on the web 1 in synchronization with the reading marks 43, 44..., and the virtual starting marks 49', 4
9'' can be considered to be a mark virtually printed on the web 1 in synchronization with the starting mark 4912-.

Fig. 10 shows a printing cylinder 50, a code printing plate 54, 5'5...
The relationship among the reading marks 43, 44, . . . , the starting mark 49, the reading mark sensor 21, and the starting mark sensor 20 is schematically shown. In this case, one printing cylinder 50 is used to print all the codes.

20' is a virtual starting mark sensor, and 21' is a virtual reading mark sensor, which is assumed to be in a position where the starting mark sensor 20 and the reading mark sensor 21 are expanded in the direction in which the web 1 is transported.

If the radius of the printing cylinder 50 and the first and second rotary plates 52.53 is R, then L, = R·θ5 L, = R·θ.

It becomes Lo-2πR. It is preferable that both LRlLc be smaller than Lo.

If the distance between the printing cylinder 50 and the code checking means 19 is L, then 13- do.

By setting 1-c < I-o, the virtual starting mark sensor 20' is placed on the downstream side of the code checking means 191, so that the virtual starting mark sensor 20'
' is in the -1- stream from the code checking means 19, then L2>
(Let it be l.

Here, L2=L3-Lc L, =L3-LR becomes.

Li is preferably an integral multiple of the sheet length Lo.

Returning to FIG. 1 again, the operation will be explained.

Here, C) 3A and 3B are trial prints, and C)
It is assumed that the actual printing starts from 3C. And Figure 1 (,
) shows the state at the moment when the first actual printing is performed on the row of the first small section 4C of sheet) 3C by the printing cylinder 50 as a printing means.

For convenience of explanation, the relationship between the virtual sensor and the virtual mark will be explained below. In reality, detection is performed between the corresponding sensor and the 14 mark, and a signal is emitted.
At the moment of writing, the virtual starting mark on the "first stream side" closest to the virtual starting mark sensor 20' as the virtual starting mark detection means is 49", and the small section 4 located at the position of the printing cylinder 50
The distance between C and the reading mark 43 is .

When the main column is started, a signal is emitted by the motion sensor of the eccentric cam or other means, and the virtual read mark 4 B", 43' is moved under the virtual read mark sensor 2B", 43'.
, 44' . . . emits a read mark pulse each time it passes. As the roll 1 progresses, as shown in Fig. 1 (1).
) When the virtual starting mark 49'' reaches the position of the virtual starting mark sensor 20' and is sensed, counting of reading mark pulses is started. The section 4C has not yet reached the code checking means 19 and is a distance Lx in front of it.As is clear from the figure, this Lx is Lx=L++1-2.

15- However, since the distance between the code inspection means 19 and the virtual read mark sensor 21' is set equal to Lo, 1, the virtual read mark (43) of the previous pattern from the virtual read mark sensor 21' Until y long distance l-5
1, L5=I-x, and the positional relationship of the subdivision, the virtual reading mark, and the virtual starting mark in the range of L5 is exactly the same as the state in the range of Lx between the code checking means 1st and the subdivision 4C. Become. Therefore, at the same time that the virtual read mark (43) reaches the virtual read mark sensor 21', the small section 4C in which the first book entry was made reaches the position immediately below the code checking means 19. Therefore, after the virtual starting mark is detected by the virtual starting mark sensor 20', the virtual reading mark sensor 20'
F is the number of read marks included in the range of L5, that is, Lx (=L1+1
The code is checked when the number Nx (six in this figure) of virtual reading marks 44'' to 48'' included in the range of (2) is counted by six virtual reading marks 44' to 16- (43). When the means 19 is activated to start the code inspection, the inspection can be reliably started from the first printed surface using the main column.

In addition, the number Nx of reading marks included between Lx in "1" is the number Nx of reading marks included in Lx in the state shown in Figure 1 (I) in the actual item
You can also count the number of reading marks that fall within the range.

When the code is inspected in this way, if the web 1 meanders in the lateral direction or the web 1 itself expands or contracts in the transport direction, and the code 38 deviates from the limit frame 39, the amount of deviation is detected. , the X table 35, the Y table 36, or both are repeated according to the amount of deviation, and the code 38 is captured again within the limit frame 39, ensuring reliable inspection and preventing erroneous judgments and missing measurements. Ru.

In addition, since the imaging range 37 is larger than the limit frame 39, even if the code 38 protrudes from the limit frame 39, the inspection will be performed normally, and the limit frame 39 will immediately follow the code 38 due to the shift signal. − Able to perform normal tests at all times.

In the embodiment described above, only the detection means 42 of the code inspection means 19 moves in the X direction (transfer direction of the web) and the Y direction (direction perpendicular to the X direction). The relative position with respect to the reading mark sensor 21' may be moved.

For example, the detection means 42 moves in the Y direction, and the reading mark sensor 21 moves in the circumferential direction or tangential direction of the first rotary plate 52 using a motor such as a pulse motor and a screw machine, or a servo motor. Relative movement may also be performed.

In the embodiments described above, the distance between the code inspection means 19 and the virtual read mark sensor 21' is such that the read mark is divided equally into Lo or the circumference of the first rotary plate 52 (for example, divided into n equal parts). ), it is not necessarily L
It does not have to be equal to o, and may be L, = m/n Lo (m is an integer). However, it is preferable to become ``man''.
゜18- According to the present invention, there is provided a highly reliable method for inspecting printed matter, which allows inspection to be carried out reliably without being hindered even if paper is missing from the roll, and without troubles due to poor printing of marks, and the method thereof. It is possible to provide a device that has extremely great practical effects.

[Brief explanation of the drawing]

The drawings relate to embodiments of the present invention, and FIGS. 1(a) and 1(b) show a printing means, a code inspection means, a starting mark sensor, a reading mark sensor, a starting mark on the printed surface of the web, a reading mark, and a virtual starting mark. An explanatory diagram showing the relative positions of marks and virtual reading marks, Fig. 2 is a 70-diagram of the entire device, Fig. 3 is a front view of the code inspection means, Fig. 4 is a side view thereof, Figs. 5 and 6. is an explanatory diagram of the imaging range, FIG. 7 is a plan view of the printing cylinder, FIG. 8 is a front view thereof, FIG. 9 is a developed view of the printing cylinder, the first and second rotary plates viewed from inside, and FIG. FIG. 10 is an explanatory diagram schematically showing the relative relationship among the sensor, mark, printing plate, virtual sensor, and code inspection means. 19- 1... Roll paper, 2... Arrow, 3A, 3B, 3C... Sheet, 4A, 4B, 4C... Small section, 4C'... Code,
5 A, 5 B, 5 C...small section, 5C'...
Code, GA, EiB, 6C... Small section, GC'... Code, 11... Feeder, 12... Roll, 13° 14.
・Design printing unit, 15...Number printing unit, 1st...First printing cylinder, 17...Second printing cylinder, 18...Impression cylinder, 19
... Code checking means, 20 ... Starting mark sensor, 20'
...Virtual starting mark sensor, 21...Reading mark sensor, 21' ...Virtual reading mark sensor, 22
...Inspection unit, 23...Sensor, 24...Cutter unit, 25...Stacker, 26...And date, 27...7 lip flop circuit, 28...And date, 29...Counter, 30...7 lip 70 tube circuit, 31...and gate, 32...stroboscopic device ffi
, 33...controller, 34...frame, 35...
X table, 36...Y table, 37...imaging range,
38... code, 3 days... limit frame, 40.41... motor, 42... detection means, 43°=20= 44.45.4 G, 47.48... reading mark,
(43), 43', 43", 43"', 44', 4
4". 45', 45", 4Ei', 46", 47', 47". 4B', 4B''...Virtual reading mark, 49...Starting mark, 49', 49'', 49'''...Virtual starting mark, 50...Print cylinder, 50', 50''...Virtual printing cylinder, 5
1... Rotating shaft, 52... First rotating plate, 52', 52''.
・Virtual first rotating plate, 53...Second rotating plate, 53', 53
”...virtual second rotating plate, 54.55.5 B, 57.
58.59...sign plate, 54', 55', 5B'
, 57'', 58', 59'...virtual code stamp, eo
, e+...Reference line. Patent Applicant Kyodo Printing Co., Ltd. Representative Patent Attorney Masashi Takagi 1) Minoru Takao Maruyama 21- Figure 4

Claims (1)

[Claims] 1. In a printed matter inspection method for inspecting the quality of codes printed in a large number of small sections that are repeatedly distributed with the same pitch distribution for each sheet of a certain sheet length in the longitudinal direction of a web. , providing a reading mark that rotates in synchronization with each code stamp plate corresponding to the code of each small section on the printing cylinder, and a starting mark that rotates in synchronization with the printing cylinder, and detecting the reading mark. To start printing the code, after the actual printing process has started, the starting mark is detected by the starting mark detecting means to start counting the reading mark pulses, and a predetermined number of pulses N is detected. 1. A method for inspecting a printed matter, characterized in that when the code inspection means reaches , the code inspection by the code inspection means is started, and the code inspection is started from the code printed by the actual printing. 1-2. Assuming virtual starting marks and virtual reading marks that are printed on the web in synchronization with the starting mark and reading mark, the starting mark detection means and reading mark detection means are used to transport the web. If the positions of the virtual starting mark detection means and the virtual reading mark detection means are respectively the positions of the virtual starting mark detection means and the virtual reading mark detection means, then at the start of the actual printing of the code, the upstream virtual starting mark closest to the virtual starting mark detection means The distance between the mark and the virtual reading mark of the first small section after the start of actual printing is L2, and the distance from the code inspection means to the virtual starting mark detection means is L2 (the virtual starting mark inspection means % if it is upstream from the code checking means.
If L2>O1 is on the downstream side, 'f=1-2<0), then the number of read pulses that enter between the virtual read mark of the first subdivision and the distance Lx = Lt + L2 is N. ×
2. The method according to claim 1, wherein the predetermined number of pulses N is 2-N=Nx. 3. Constant sheet length in the longitudinal direction of the web. In a printed matter inspection device that inspects the quality of codes printed in a large number of small sections that are repeatedly distributed with the same pitch distribution for each sheet, a cylinder rotates in synchronization with the printing cylinder.
A rotary plate and a second rotary plate are provided, and the second rotary plate is provided with reading marks corresponding to the code stamps provided on the printing cylinder corresponding to each of the small sections, and the second rotary plate is provided with a starting mark for pulse counting, a transport means for transporting the web, a printing means for printing a code on each of the small sections, a code inspection means for testing the quality of the printed code, and a code inspection means for testing the quality of the printed code; a reading sensor that senses a mark and emits a reading pulse; a starting sensor that senses the starting mark and starts counting the reading pulses; and a counting sensor that counts the number of reading pulses and when a predetermined number N of pulses is reached. 3. A printed matter inspection apparatus, comprising: counting means for emitting a signal for starting the inspection of the inspection means.