JP2009045750A - Printing method of test printing surface of blanket, rotary press equipped with control device for performing this printing method and program for controlling rotary press to perform this printing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To check whether a blanket surface is conforming by performing a solid printing in order to determine the operating worthiness of the blanket surface in an offset rotary press and also in such a case, prevent a web from being used wastefully when the solid printing is carried out. <P>SOLUTION: The timely control of each printing device is decided according to an interval Pmn between an upstream printing device and a downstream printing device, the printing surface Lb of a blanket cylinder, the length Li of a solid printing part, the length Lw of a blank part between the solid printing parts, each arranged at a fore position and a back position, a distance Ln from a point when a blanket comes into contact with a printing plate to a point when printing starts, and the operating speed S of the rotary press. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  According to the present invention, continuous paper is passed through a plurality of printing apparatuses having a plate cylinder, a blanket cylinder, and an inking mechanism sequentially so as to be in contact with the blanket of the blanket cylinder of each printing apparatus. A method for printing a blanket surface inspection printing surface by an offset rotary press provided with an offset rotary printing unit for printing ink supplied to the printing plate of the plate cylinder through the blanket surface on the continuous paper, and a control for performing this method The present invention relates to a rotary press provided with a device and a program for controlling the rotary press to perform this method.

Offset printing is a printing that supplies ink to the image line area of the printing plate on the surface of the plate cylinder and prints on the paper surface in contact with the blanket surface via the blanket surface of the blanket cylinder. The quality of the blanket surface greatly affects the quality of the printed surface. Therefore,
(i) A blanket with a usage level exceeding a predetermined standard based on the usage time and number of prints,
(ii) The surface state of a new blanket that has been replaced, or the surface state of a blanket after a trouble, such as a blanket that has a surface state wrapped with continuous paper that has been cut during a printing operation,
(iii) Checking the surface condition of a blanket, etc. with foreign matter sandwiched between the blanket cylinder and the plate cylinder or between the blanket cylinder and a backup cylinder such as an impression cylinder is extremely important to maintain good print quality. is important. Then, as a method for confirming the surface state of the blanket, ink is supplied substantially uniformly to the entire surface of the plate on the peripheral surface of the plate cylinder, and this is printed in a solid state on continuous paper via the blanket surface, that is, continuously. A so-called black is printed on paper, and the blanket surface is inspected by observing whether there is density unevenness or missing prints in the solid print portion. That is, the printing result obtained by printing the entire plate surface in a solid state is used as the blanket surface inspection printing surface.

  No patent document has been found that discloses means for efficiently printing the blanket surface inspection printing surface described above.

  By the way, when printing the printing surface for blanket surface inspection, only the length of one blanket cylinder in a state where the printing portions of the respective solids for each blanket cylinder are printed without overlapping each other. If there is enough. However, until now, the printing surface for blanket surface inspection has been manually printed by the operator for each blanket cylinder, so the length of the solid printing part is longer than necessary, especially on rotary presses that use continuous paper. In a multi-color printing press that prints continuous paper through a plurality of printing devices in sequence, when printing on the printing surface for blanket surface inspection for each printing device, printing is performed for each printing device. The amount of overlap between the printing units of each printing apparatus tends to be unnecessarily wide, and waste of continuous paper has occurred. Moreover, the printing operation for the blanket surface inspection printing surface is not only complicated, but also takes a relatively long time because the rotary press is operated at a low speed, which restrains the operator and requires a large number of work steps. It was.

  An object of the present invention is to release an operator from the troublesome printing operation of the printing surface for blanket surface inspection, and to prevent the waste of continuous paper caused by this operation.

  FIG. 1 is a diagram for explaining the principle configuration of the present invention.

As will be described in more detail later, in FIG.
(1) HP1 and HP2 are offset printing apparatuses, respectively. In the figure, Pmn is a distance between offset printing apparatuses.
(2) BC is a blanket cylinder, and ink is supplied to the entire surface of the blanket PB provided on the peripheral surface of the blanket cylinder BC, and solid printing is performed on the continuous paper W by the blanket PB supplied with the ink. For example, “HP2 solid printing portion” shown in the figure represents an existing portion of a printing surface for blanket surface inspection that is solid-printed on the continuous paper W.
(3) PC is a plate cylinder, ink is supplied to the printing plate PP corresponding to the peripheral surface of the plate cylinder PC by an inking mechanism (not shown), and the printing plate PP supplied with the ink is predetermined. The blanket cylinder BC (more specifically, the blanket PB) is contacted under the timing of the above, and ink is supplied to the entire surface of the blanket PB for the inspection of the blanket surface as the blanket cylinder BC rotates.

  For ease of explanation, in FIG. 1, it is assumed that (i) the blanket PB exists on the entire circumferential surface of the blanket cylinder BC, and (ii) the entire circumferential length (circumferential surface length Lb) of the blanket cylinder BC is a unit length. (Iii) In the offset printing unit HP2, for example, ink is supplied from the position where the blanket PB and the printing plate PP of the plate cylinder PC are in contact with each other during the printing operation. It is assumed that the peripheral surface length Ln along the rotation direction to the position where the blanket PB thus made contacts with the continuous paper W is five times the unit length L0.

  Assuming that the plate cylinder PC is in contact with the blanket cylinder BC at the same timing in the offset printing unit HP1 and the offset printing unit HP2, a form in which “printing surface for blanket surface inspection” is printed on the “solid printing portion” shown in the drawing. Will remain. The length of these “solid print portions” is Li, and the length of the blank portion between the “solid print portions” is Lw.

  As shown in the figure, the surface state of the blanket is checked by checking the state of “solid printing part by HP1” and “solid printing part by HP2”, that is, whether or not the solid printing is correctly performed on the entire surface.

  In this way, the check is performed. In order to eliminate the waste of the continuous paper W, the length Lw of the blank portion between the “solid print portions” shown in FIG. This is preferable.

  In the present invention, the Lw is controlled to be maintained at a preferable level.

  The present invention is intended to achieve the above object by the configuration described in the claims.

According to the present invention described in the claims, when printing the blanket surface inspection printing surface, the operation from the start to the end of the printing in the printing step in the printing step,
(i) The interval Pmn between the positions where the continuous paper comes into contact with the blanket (that is, the printing position) of the printing apparatus that moves back and forth along the travel path of the continuous paper
(ii) The circumferential length Lb of the blanket cylinder provided with the blanket,
(iii) the length Li of the entire solid printing portion by the successive printing apparatus,
(iv) The length Lw of the blank portion provided between the printing portions of the entire solid surface by the successive printing apparatus,
(v) In each of the successive printing apparatuses, the circumferential length Ln along the rotational direction from the position where the blanket and the printing plate contact in the blanket cylinder during the printing operation to the position where the blanket and continuous paper contact,
(vi) Predetermined operating speed S of the rotary press
Therefore, it is possible to prevent waste of the continuous paper caused by the printing operation of the printing surface for blanket surface inspection.

  According to the invention described in claims 5 to 9, waste of the continuous paper can be prevented, and an operator can be freed from the printing operation of the complicated blanket surface inspection printing surface. The work man-hours can be reduced.

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

  FIG. 2 is a schematic configuration diagram of an offset rotary press provided with a control device that automatically operates so as to perform printing of a blanket surface inspection printing surface by the method according to the present invention, and FIG. 3 (A), (B) Fig. 2 is a time chart when the offset rotary press shown in Fig. 2 is automatically operated to print the blanket surface inspection printing surface. FIG. 6 is a diagram illustrating timing for printing a copy.

  3A is the same as FIG. 3A, the horizontal axis is time (seconds), and FIG. 3A is the printing operation in the H type unit printing apparatus and inking in the inking mechanism. FIG. 3B shows the printing operation in the arch type unit printing apparatus and the inking operation in the inking mechanism.

  FIG. 4 shows a continuous paper HW continuous in the “paper traveling direction” in the H type unit HP among the two printing units of the rotary press shown in FIG. In the printing operation time 0 to 18 seconds shown, the printing state of the printing surface for blanket surface inspection performed in each cylinder is shown, and solid printing portions HB1, HB2, HB3, and HB4 are printed on the surface of the continuous paper HW. FIG. 5 is a schematic diagram showing the state from the right side to the left side in the drawing every 1 second. FIG. 5 is a schematic diagram of “paper traveling direction” in the arch type unit AP among the two printing units of the rotary press shown in FIG. The continuous paper AW indicates the printing status of the blanket surface inspection printing surface performed in each cylinder during the printing operation time 0 to 18 seconds shown in the time chart of FIG. Solid print part AB1, AB2 on the surface of AW , AB3, AB4 is a schematic diagram showing a state in which 1 second has elapsed from the right side to the left side in the drawing. Note that the time lapse of the horizontal axis shown in FIG. 4 and FIG. 5 is shown from the right to the left in the figure, and the time lapse in the case of FIG. 3 (A) and FIG. 3 (A) and FIG. 3 (B) are shown from left to right.

  The present invention relates to the offset printing unit PU of the rotary press RP for printing the continuous paper W through the paper from the paper feeding unit SU to the folding unit FU via the offset printing unit PU as shown in FIG. Done.

  As the offset printing unit PU, for example, a so-called tower type multicolor printing unit as shown in FIG. 2 is well known. The two tower-type offset printing units PU (HP and AP) have two printing couples, each consisting of a plate cylinder PC and a blanket cylinder BC, as a printing apparatus, with the continuous paper W (HW and AW) interposed therebetween. A blanket PB provided on the peripheral surface of the blanket cylinder BC is arranged on the continuous paper W (HW and AW) so as to be in contact with the printing cylinder PP of the printing cylinder PC corresponding to the printing cylinder PC of each printing couple. An inking mechanism (not shown) for supplying ink to the ink is provided. A plurality of printing apparatuses (four in the figure, the first printing apparatus P1, the second printing apparatus P2, the third printing apparatus P3, and the fourth printing apparatus P4) are arranged along the traveling direction of the continuous paper W. Is provided. Then, ink is supplied to the image line portion of the plate PP of the plate cylinder PC by the inking mechanism, and this ink is printed on the continuous paper W through the surface of the blanket PB of the blanket cylinder BC.

  In the offset printing unit PU, printing of the blanket surface inspection printing surface of the present invention is started after the offset printing unit PU is first activated and ink is spread over the peripheral surfaces of the rollers constituting the inking mechanism. . It should be noted that this step may be omitted when the ink is spread on the peripheral surfaces of the rollers constituting the inking mechanism, such as after printing. Next, the continuous paper W is passed through the offset printing unit PU.

  After the web threading is completed, the rotary press operation is turned on to operate the offset printing unit PU at a predetermined speed. The predetermined speed is, for example, inching, and when the offset printing unit PU is capable of being individually driven at least for each printing apparatus, the rotational phase of the plate cylinder PC and the blanket cylinder BC of each printing apparatus. Is set to a speed at which synchronous control is performed so that the control is performed in a predetermined correct relationship. In the illustrated embodiment, the plate cylinder PC and the blanket cylinder BC are each rotated by 1/8 revolution per second for easy understanding of the description to be described later.

  After the offset printing unit PU reaches the predetermined speed, first, ink is supplied from the inking mechanism to the entire surface of the printing plate PP of the plate cylinder PC. At this time, if only the ink is supplied without supplying the fountain solution, the printing plate PP does not have to be the entire image area.

  After the ink is supplied almost uniformly to the entire surface of the printing plate PP, the blanket cylinder BC is moved (tripped), and the blanket PB is run in accordance with the ON operation of the printing plate PP of the printing cylinder PC and the rotary press operation. The ink which is brought into contact with the continuous paper W that has started and is supplied almost uniformly on the entire surface of the printing plate PP is printed on the continuous paper W in a solid state via the surface of the blanket PB.

  Among the operations described above, the printing of the blanket surface inspection printing surface after paper passing will be described in more detail with reference to FIGS. 3 (A) and 3 (B) to FIG.

  First, the ON operation of the rotary press operation is performed. When the rotary press operation is turned ON, the continuous paper W starts to run, and in each printing apparatus of the offset printing unit PU, the inking mechanism starts to operate, and the plate cylinder PC and the blanket cylinder BC start to rotate. .

  Subsequently, a switch that prompts printing of the blanket surface inspection printing surface is turned on.

  It is to be noted that printing of the blanket surface inspection printing surface is performed either prior to turning on the rotary press operation or prior to turning on the switch for prompting printing of the blanket surface inspection printing surface. Of course, the offset printing unit PU or the printing apparatus may be designated in advance, and it is possible to allow only the designated offset printing unit PU or the designated printing apparatus to print the printing surface for blanket surface inspection. is there.

  When the offset printing unit PU has reached the predetermined speed when the switch for encouraging printing on the printing surface for blanket surface inspection has reached the predetermined speed, the ink of the inking mechanism is used in the corresponding offset printing unit PU or printing apparatus. The supply roller is moved (tripped) to come into contact with the plate PP of the plate cylinder PC, and ink supply to the plate PP is started. When the offset printing unit PU has not reached the predetermined speed at the time of turning on the switch that prompts printing of the printing surface for blanket surface inspection, the same applies after the offset printing unit PU has reached the predetermined speed. Ink supply to the printing plate PP is started. The ink supply is performed for a predetermined time that is sufficient to supply the ink substantially uniformly to the entire surface of the printing plate PP over at least the time required for the plate cylinder PC to rotate once.

  After a predetermined time has elapsed from the start of ink supply, that is, after the ink has been supplied substantially uniformly over the entire surface of the printing plate PP, the blanket cylinder BC is moved (tripped), and the blanket PB is moved to the plate cylinder PC. The printing operation on the printing surface for blanket surface inspection is started by bringing the printing plate PP into contact with the continuous paper W that has started running in response to the ON operation of the rotary press operation.

The printing operation of each printing device is
An interval Pmn of a position where a blanket of a printing apparatus that is in succession in the running direction of the continuous paper contacts the continuous paper,
The circumferential length Lb of the blanket cylinder BC with the blanket PB,
The length Li of the solid printing portion by the successive printing devices,
The length Lw of the blank portion provided between the solid print portions,
The blanket PB and the continuous paper from the position where the blanket PB and the printing plate PP are in contact with each other in the blanket cylinder BC during the printing operation of the printing device located upstream of the printing device in the running direction of the continuous paper W. The circumferential length Lm along the rotation direction to the position where W comes into contact,
The blanket PB and the continuous paper from the position where the blanket PB and the printing plate PP come into contact with each other in the blanket cylinder BC during the printing operation of the printing apparatus located downstream of the running direction of the printing apparatus that follows the running direction of the continuous paper W. The circumferential length Ln along the direction of rotation to the position where W contacts,
And the predetermined operating speed S of the rotary press
Based on.

That is,
(i) Pmn, which is the interval between the positions where the blanket PB of the printing apparatus that follows the continuous paper W in the running direction contacts the continuous paper W;
(ii) The blanket PB from the position where the blanket PB and the printing plate PP are in contact with each other in the blanket cylinder BC during the printing operation of the printing apparatus located upstream of the traveling direction of the printing apparatus that is in succession to the traveling direction of the continuous paper W. The peripheral surface length along the rotation direction to the position where the continuous paper W comes into contact, that is, the position where the surface portion of the blanket PB supplied with ink from the printing plate PP of the printing apparatus located on the upstream side comes into contact with the continuous paper W Lm, which is the length that the continuous paper W travels while rotating up to
(iii) The blanket PB from the position where the blanket PB and the printing plate PP are in contact with each other in the blanket cylinder BC during the printing operation of the printing apparatus located downstream of the running direction of the printing apparatus that is in succession to the running direction of the continuous paper W. The circumferential surface length Ln along the rotation direction to the position where it contacts the continuous paper W, that is, the position where the surface portion of the blanket PB supplied with ink from the printing plate PP of the printing apparatus located downstream contacts the continuous paper W. For the inspection of the blanket surface, a printing device that moves back and forth in the running direction of the continuous paper W simultaneously moves (trips) each blanket cylinder BC from Ln, which is the length that the continuous paper W travels during When the length (Pmn + Lm−Ln) along the traveling direction of the unprinted portion generated between the solid print portions printed by both printing apparatuses when it is assumed that printing of the printing surface has started is obtained. To,
The length Li along the running direction of the solid printing portion printed by printing on the blanket surface inspection printing surface and the running of the blank portion formed between the two solid printing portions printed by successive printing apparatuses. Find the sum (Li + Lw) with the length Lw along the direction,
Compare both values
When the former value is small, printing on the printing surface for blanket surface inspection by the downstream printing device is performed on the upstream side so that there is no overlap between the two solid state printing parts printed by the successive printing devices. Start before printing the blanket surface printing surface by the device,
When the former value is large,
In order to print a solid print portion to be printed by the upstream printing device on the unprinted portion, printing of the blanket surface inspection printing surface by the upstream printing device is performed, and printing for blanket surface inspection by the downstream printing device is performed. Start before printing the surface,
In any case, the time difference is determined by assuming that the operation speed of a predetermined rotary press that performs printing of the printing surface for blanket surface inspection is S.
| (Pmn + Lm−Ln) − (Li + Lw) | / S
It is said.

  When the former value is large, printing of the blanket surface inspection printing surface by the upstream printing device and printing of the blanket surface inspection printing surface by the downstream printing device may be started simultaneously. This is because, when starting at the same time, the length along the running direction of the blank portion between the solid printing portion by the upstream printing device and the solid printing portion by the downstream printing device is Although this increases, this increased length starts printing the blanket surface inspection printing surface by the downstream printing device when printing on the blanket surface inspection printing surface by the upstream printing device in advance. This is because the length of the unprinted continuous paper passing through the printed portion on the downstream side is equal to the length of the print, and no difference occurs in the effect of preventing the waste of the continuous paper.

  When the former and the latter values are equal, printing of the blanket surface inspection printing surface by the upstream printing device and printing of the blanket surface inspection printing surface by the downstream printing device are started simultaneously. Yes.

  The printing of the blanket surface inspection printing surface described above will be specifically described using the rotary press shown in FIG. 2 as an example.

  In the following, for easy understanding, the length obtained by dividing the circumferential surface length Lb of the blanket cylinder BC provided with the blanket PB into eight equal parts is defined as a reference length L0, and Pmn, Lb, Li described below. .. Are drawn assuming that the value is an integral multiple of the reference length L0. In the present invention, the “integer multiple” is not a condition.

  That is, the interval Pmn of the position where the surface of the blanket of the printing apparatus that moves back and forth in the running direction of the continuous paper comes into contact with the continuous paper, the circumferential length Lb of the blanket cylinder BC provided with the blanket PB, the printing apparatus that moves back and forth. The printing device located on the upstream side in the running direction of the printing device that is in succession to the running direction of the continuous paper, the length Lw of the blank portion provided between the printing portions of the solid, The circumferential length Lm along the rotational direction from the position where the blanket PB and the printing plate PP are in contact with each other to the position where the blanket PB and the continuous paper W are in contact in the blanket cylinder BC during the printing operation, and the travel path of the continuous paper The blanket from the position where the blanket PB and the printing plate PP are in contact with each other in the blanket cylinder BC at the time of the printing operation of the printing apparatus located on the downstream side in the traveling direction of the printing apparatus succeeding and following. B and depicts the circumferential surface length Ln along the rotating direction of the position to which the paper web W is in contact as an integral multiple of the respective reference length L0. Further, as the predetermined operating speed S of the rotary press, the operating distance per unit time (1 second) is the reference length L0.

That is, in the H type unit HP,
(I) The distance HP12 (ie, Pmn (P12)) at which the surface of the blanket PB of each of the first printing device HP1 and the second printing device HP2 that are in succession in the running direction of the continuous paper HW contacts the continuous paper HW. Is five times the reference length L0, and the distance HP23 (that is, Pmn (P23)) of the position where the surface of each blanket PB of the second printing device HP2 and the third printing device HP3 contacts the continuous paper HW is the reference length. 14 times L0, and an interval HP34 (ie, Pmn (P34)) at which the surface of the blanket PB of each of the third printing device HP3 and the fourth printing device HP4 contacts the continuous paper HW is five times the reference length L0. Assuming
(Ii) Further, the length Li of the solid printing portions HB1, HB2, HB3, HB4 by the printing device is eight times the reference length L0 (that is, a length equal to the circumferential surface length Lb of the blanket cylinder BC provided with the blanket PB). )
(Iii) The length Lw of the blank portion provided between the solid print portions HB1, HB2, HB3, and HB4 is set as the reference length L0,
(Iv) The peripheral surface of the first printing device HP1 along the rotational direction from the position where the blanket PB and the printing plate PP contact in the blanket cylinder BC during the printing operation to the position where the blanket PB and the continuous paper HW contact. The length HL1 (ie Lm (L1)) is three times the reference length L0,
(V) The peripheral surface of the second printing device HP2 along the rotational direction from the position where the blanket PB and the printing plate PP are in contact with the position where the blanket PB and the continuous paper HW are in contact in the blanket cylinder BC during printing operation The length HL2 (ie Ln (L2)) is 5 times L0,
(Vi) The circumferential surface of the third printing device HP3 along the rotational direction from the position where the blanket PB and the printing plate PP are in contact with the position where the blanket PB and the continuous paper HW are in contact with each other in the blanket cylinder BC during printing operation. The length HL3 (ie Lm (L3)) is three times the reference length L0,
(Vii) The circumferential surface of the fourth printing device HP4 along the rotational direction from the position where the blanket PB and the printing plate PP contact each other to the position where the blanket PB and the continuous paper HW contact each other in the blanket cylinder BC during printing operation The length HL4 (ie Ln (L4)) is 5 times L0,
(Viii) The operating distance (ie, operating speed S) per unit time (1 second) of the rotary press is defined as the reference length L0.
It is assumed that

In the arch type unit AP,
(I) An interval AP12 (that is, Pmn (P12)) at a position where the surface of the blanket PB of each of the first printing device AP1 and the second printing device AP2 that follow the continuous paper traveling direction contacts the continuous paper AW. The distance AP23 (that is, Pmn (P23)) at which the surface of the blanket PB of each of the second printing device AP2 and the third printing device AP3 contacts the continuous paper AW, and each of the third printing device AP3 and the fourth printing device AP4. The interval AP34 (ie, Pmn (P34)) at which the surface of the blanket PB contacts the continuous paper AW is assumed to be 8 times the reference length L0.
(Ii) Further, the length Li of the solid printing portions AB1, AB2, AB3, AB4 by the printing apparatuses AP1, AP2, AP3, AP4 is eight times the reference length L0 (that is, the blanket cylinder BC provided with the blanket PB). The length equal to the circumferential surface length Lb),
(Iii) The length Lw of the blank portion provided between the solid print portions AB1, AB2, AB3, AB4 is set as the reference length L0,
(Iv) The circumferential surface of the first printing device AP1 along the rotational direction from the position where the blanket PB and the printing plate PP contact in the blanket cylinder BC during the printing operation to the position where the blanket PB and the continuous paper AW contact. The length AL1 (ie Lm (L1)) is 3 times the reference length L0,
(V) The circumferential surface of the second printing apparatus AP2 along the rotational direction from the position where the blanket PB and the printing plate PP are in contact with the position where the blanket PB and the continuous paper AW are in contact with each other in the blanket cylinder BC during printing operation. The length AL2 (ie Ln (L2)) is 3 times the reference length L0,
(Vi) The circumferential surface of the third printing device AP3 along the rotational direction from the position where the blanket PB and the printing plate PP are in contact with the position where the blanket PB and the continuous paper AW are in contact in the blanket cylinder BC during printing operation. The length AL3 (ie Lm (L3)) is 3 times the reference length L0,
(Vii) The circumferential surface of the fourth printing device AP4 along the rotational direction from the position where the blanket PB and the printing plate PP contact in the blanket cylinder BC during the printing operation to the position where the blanket PB and the continuous paper AW contact The length AL4 (ie Ln (L4)) is three times the reference length L0,
(Viii) The operation distance S per unit time (1 second) (that is, the operation speed) is set as the reference length L0.
Is assumed.

  In order to inspect the state of the entire printing medium surface of the blanket PB by the solid printing unit, it is necessary to inspect the solid printing unit by the entire printing medium surface of the blanket PB. Is set to a length equal to the peripheral surface length Lb of the blanket cylinder BC provided with the blanket PB. In this case, the length Li is equal to the peripheral surface length Lb of the blanket cylinder BC. It can be easily understood that the length Li of the solid printing portion is the minimum value as the printing surface for blanket surface inspection.

  As can be seen from FIG. 3 (A), according to the type unit HP, the second printing device HP2 is 6 seconds earlier than the first printing device HP1 and 7 seconds earlier than the third printing device HP3. The printing operation for printing the printing surface is started, and the fourth printing device HP4 starts the printing operation for printing the printing surface for blanket surface inspection by 6 seconds earlier than the third printing device HP3. The printing operation is finished 11 seconds after the start of the printing operation in the HP1 and the third printing device HP3, and 13 seconds after the start of the printing operation in the second printing device HP2 and the fourth printing device HP4.

  Referring to FIGS. 3A and 4, the offset printing unit PU due to the ON operation of the rotary press is in a state in which it has reached a predetermined speed, and printing of the printing surface for blanket surface inspection is performed. An ink supply operation to the printing plate PP by the ink supply mechanism is started under an AND condition that the switch to be urged is turned on.

  After a predetermined time has elapsed since the ink supply operation to the printing plate PP was started, that is, at the time of the printing operation time 0 second in FIG. 3A and FIG. 4, the second printing apparatus HP2 first started the printing operation, After the rotation of the peripheral length HL2 along the rotational direction from the position where the blanket PB and the printing plate PP contact each other to the position where the blanket PB and the continuous paper HW contact each other in the blanket cylinder BC during the printing operation, that is, the printing operation After 5 seconds from the start, the solid printing unit HB2 is printed for 8 seconds, and the printing operation by the second printing apparatus HP2 is completed. With the end of the printing operation by the second printing apparatus HP2, the ink supply operation in the second printing apparatus HP2 is also ended.

  One second after the start of the printing operation by the second printing apparatus HP2, the fourth printing apparatus HP4 starts the printing operation, and the blanket PB and the printing plate PP from the position where the blanket PB and the plate PP come into contact with each other in the blanket cylinder BC during the printing operation. The solid printing portion HB4 is printed for 8 seconds after rotating by the circumferential length HL4 along the rotation direction to the position where the continuous paper HW comes into contact, that is, 5 seconds after the start of the printing operation, and the fourth printing apparatus The printing operation by HP4 is completed. Along with the end of the printing operation by the fourth printing apparatus HP4, the ink supply operation in the fourth printing apparatus HP4 is also ended.

  Next, 6 seconds after the start of the printing operation by the second printing apparatus HP2, the first printing apparatus HP1 starts the printing operation, and the blanket starts from the position where the blanket PB and the printing plate PP are in contact with the blanket cylinder BC during the printing operation. After rotating by the circumferential length HL1 along the rotation direction to the position where the PB and the continuous paper HW come into contact, that is, after 3 seconds from the start of the printing operation, the solid printing portion HB1 is printed for 8 seconds, and the first The printing operation by the printing apparatus HP1 ends. With the end of the printing operation by the first printing apparatus HP1, the ink supply operation in the first printing apparatus HP1 is also ended.

  Finally, 7 seconds after the start of the printing operation by the second printing apparatus HP2, the third printing apparatus HP3 starts the printing operation, and from the position where the blanket PB and the printing plate PP are in contact with each other in the blanket cylinder BC during the printing operation. After rotating by the circumferential length HL3 along the rotation direction to the position where the blanket PB and the continuous paper HW come into contact, that is, after 3 seconds from the start of the printing operation, the solid printing portion HB3 is printed for 8 seconds, The printing operation by the three printing apparatus HP3 is completed. With the end of the printing operation by the third printing apparatus HP3, the ink supply operation in the third printing apparatus HP3 is also ended.

  As described above, the printing operation is completed in 18 seconds from the start of the printing operation of the second printing device HP2 until the third printing device HP3 finishes the printing operation. After the first printing device HP1 to the fourth printing device HP4 finish the printing operation, the continuous paper HW is sent out until the solid printing unit HB1 printed by the first printing device HP1 passes through the fourth printing device HP4. Thereafter, in the first printing apparatus HP1 to the fourth printing apparatus HP4, each blanket cylinder BC is moved (tripped) all at once so that the blanket PB comes into contact with the printing plate PP and the continuous paper HW. Ink removal printing is performed to remove the ink remaining on the PP and the blanket PB with the continuous paper HW. Of course, in the ink removal printing, the ink supply mechanism does not perform the ink supply operation.

  Further, as can be seen from FIG. 3B, in the arch type unit AP, printing of the blanket surface inspection printing surface is performed as follows. That is, according to the arch type unit AP, the fourth printing device AP4 is faster by 1 second than the third printing device AP3, the third printing device AP3 is faster by 1 second than the second printing device AP2, The printing apparatus AP2 starts the printing operation for printing on the printing surface for blanket surface inspection by 1 second earlier than the first printing apparatus AP1, and printing is performed in any of the first printing apparatus AP1 to the fourth printing apparatus AP4. Each of the printing operations ends after 11 seconds from the start of the operation.

  3B and 5, the offset printing unit PU by turning on the rotary press is in a state in which it has reached a predetermined speed, and printing of the printing surface for blanket surface inspection is performed. Ink supply operation to the printing plate PP by the ink supply mechanism is started under an AND condition that the prompt switch is turned ON.

  After a predetermined time has elapsed since the ink supply operation to the printing plate PP was started, that is, at the time of the printing operation time 0 second in FIG. 3B and FIG. 5, the fourth printing apparatus AP4 first started the printing operation, After the blanket cylinder BC is rotated by the circumferential length AL4 along the rotational direction from the position where the blanket PB and the printing plate PP contact each other to the position where the blanket PB and the continuous paper AW contact each other, that is, the printing operation From 3 seconds after the start, the solid printing portion AB4 is printed for 8 seconds, and the printing operation by the fourth printing apparatus AP4 is completed. Along with the end of the printing operation by the fourth printing apparatus AP4, the ink supply operation in the fourth printing apparatus AP4 also ends.

  One second after the start of the printing operation by the fourth printing device AP4, the third printing device AP3 starts the printing operation. From the position where the blanket PB and the printing plate PP contact each other on the blanket cylinder BC during the printing operation, the blanket PB The solid printing portion AB3 is printed for 8 seconds after rotating by the circumferential length AL3 along the rotation direction to the position where the continuous paper AW comes into contact, that is, 3 seconds after the start of the printing operation, and the third printing apparatus The printing operation by AP3 ends. With the end of the printing operation by the third printing apparatus AP3, the ink supply operation in the third printing apparatus AP3 is also ended.

  Next, two seconds after the start of the printing operation by the fourth printing device AP4, the second printing device AP2 starts the printing operation, and the blanket starts from the position where the blanket PB and the printing plate PP are in contact with each other in the blanket cylinder BC during the printing operation. After rotating by the peripheral surface length AL2 along the rotation direction to the position where the PB and the continuous paper AW come into contact, that is, after 3 seconds from the start of the printing operation, the solid printing portion AB2 is printed for 8 seconds, and the second The printing operation by the printing apparatus AP2 ends. Along with the end of the printing operation by the second printing apparatus AP2, the ink supply operation in the second printing apparatus AP2 is also ended.

  Finally, three seconds after the start of the printing operation by the fourth printing device AP4, the first printing device AP1 starts the printing operation, and from the position where the blanket PB and the plate PP come in contact with the blanket cylinder BC during the printing operation. After rotating by the circumferential length AL1 along the rotation direction to the position where the blanket PB and the continuous paper AW contact, that is, after 3 seconds from the start of the printing operation, the solid printing portion AB1 is printed for 8 seconds, The printing operation by the one printing apparatus AP1 is completed. Along with the end of the printing operation by the first printing apparatus AP1, the ink supply operation in the first printing apparatus AP1 is also ended.

  As described above, after the first printing device AP1 to the fourth printing device AP4 finish the printing operation, the continuous paper AW is printed until the solid printing unit AB1 printed by the first printing device AP1 passes through the fourth printing unit AP4. Thereafter, in the first printing device AP1 to the fourth printing device AP4, the blanket cylinder BC is moved (tripped) all at once so that the blanket PB comes into contact with the printing plate PP and the continuous paper AW. Ink removal printing is performed to remove the ink remaining on the PP and the blanket PB with the continuous paper AW. Of course, in the ink removal printing, the ink supply mechanism does not perform the ink supply operation.

It is a figure explaining the fundamental structure of this invention. It is a schematic block diagram of the offset rotary press provided with the control apparatus which carries out automatic operation so that the printing surface for blanket surface inspection may be printed by the method concerning this invention. 3 (A) and 3 (B) are integrated in the vertical direction, and when the offset rotary press shown in FIG. 2 is automatically operated to print the blanket surface inspection printing surface. In the time chart, it is the figure which showed the timing which each cylinder prints the printing part of solid with the painting. 3 (A) and 3 (B) are integrated in the vertical direction, and when the offset rotary press shown in FIG. 2 is automatically operated to print the blanket surface inspection printing surface. In the time chart, it is the figure which showed the timing which each cylinder prints the printing part of solid with the painting. Of the two printing units of the rotary press shown in FIG. 2, the printing operation time shown in the time chart of FIG. 3A is applied to the continuous paper HW continuous in the “paper traveling direction” in the H type unit HP. The printing state of the printing surface for blanket surface inspection performed in each cylinder during 0 to 18 seconds is shown, and the state in which solid printing portions HB1, HB2, HB3, and HB4 are printed on the surface of the continuous paper HW is shown in FIG. It is a schematic diagram shown every 1 second from the middle right side to the left side. Of the two printing units of the rotary press shown in FIG. 2, the arch type unit AP performs the printing operation time shown in the time chart of FIG. 3B on the continuous paper AW continuous in the “paper traveling direction”. The printing state of the blanket surface inspection printing surface performed in each cylinder during 0 to 18 seconds is shown, and the state in which the solid printing parts AB1, AB2, AB3, AB4 are printed on the surface of the continuous paper AW is shown in FIG. It is a schematic diagram shown every 1 second from the middle right side to the left side.

Explanation of symbols

RP: Rotary press SU: Paper feed unit PU: Offset printing unit HP: H type unit (offset printing unit)
AP: Arch type unit (offset printing unit)
P1, HP1, AP1: first printing device P2, HP2, AP2: second printing device P3, HP3, AP3: third printing device P4, HP4, AP4: fourth printing device PC: plate cylinder PP: printing plate BC: Blanket cylinder PB: Blanket FU: Folding unit CP: Control devices W, HW, AW: Continuous paper HB1: Solid state printing unit HB2 by the first printing device HP1: Solid state printing unit HB3 by the second printing device HP2: Third printing Solid state printing unit HB4 by the device HP3: Solid state printing unit AB1 by the fourth printing device HP4: Solid state printing unit AB2 by the first printing device AP1: Solid state printing unit AB3 by the second printing device AP2: Third printing device AP3 Solid state printing part AB4 by: Solid state printing part Pmn by the fourth printing device AP4: Blanking of the printing apparatus that follows the continuous paper running direction Intervals P12, HP12, AP12 at positions where the print surface comes into contact with the continuous paper: The surfaces of the blanket PB of the first printing device and the second printing device that are in succession in the running direction of the continuous paper come into contact with the continuous paper W. Position intervals P23, HP23, AP23: Position intervals at which the surfaces of the blankets PB of the second printing apparatus and the third printing apparatus contact the continuous paper W 2.
P34, HP34, AP34: intervals between positions where the surfaces of the blankets PB of the third printing device and the fourth printing device contact the continuous paper W
Lb: circumference length of the blanket cylinder BC provided with the blanket PB
Li: Length of the printing portion of the entire solid surface by the successive printing apparatus Lw: Length of the blank portion provided between the printing portions of the solid surface
Lm: continuous with the blanket PB from the position where the blanket PB and the printing plate PP are in contact with each other in the blanket cylinder BC during the printing operation of the printing apparatus located upstream of the running direction of the printing apparatus that is in succession to the running direction of the continuous paper. The peripheral surface length along the rotation direction to the position where the paper W comes into contact (the surface portion of the blanket PB supplied with ink from the printing plate PP of the printing apparatus located on the upstream side rotates to the position where it contacts the continuous paper W. The length of continuous paper W traveling between)
Ln: A blanket PB continuous from the position where the blanket PB and the printing plate PP are in contact with each other in the blanket cylinder BC during the printing operation of the printing apparatus located downstream in the running direction of the printing apparatus that follows the continuous paper path. The peripheral surface length along the rotation direction to the position where the paper W comes into contact (the surface portion of the blanket PB supplied with ink from the printing plate PP of the printing apparatus located on the downstream side rotates to the position where the continuous paper W comes into contact with the surface. The length of continuous paper W traveling between)
L1, HL1, AL1: Along the rotational direction of the first printing apparatus from the position where the blanket PB and the printing plate PP contact in the blanket cylinder BC during the printing operation to the position where the blanket PB and the continuous paper W contact. Peripheral surface length L2, HL2, AL2: Rotating direction of the second printing apparatus from the position where the blanket PB and the printing plate PP are in contact with the position where the blanket PB and the continuous paper W are in contact in the blanket cylinder BC during printing operation Surface lengths L3, HL3, and AL3 along the line: From the position where the blanket PB and the printing plate PP contact in the blanket cylinder BC during the printing operation of the third printing apparatus to the position where the blanket PB and the continuous paper W contact each other. The circumferential lengths L4, HL4, AL4 along the rotation direction of: The blanket PB and the printing plate PP in the blanket cylinder BC during the printing operation of the fourth printing apparatus Surface length S along the rotation direction from the touching position to the position where the blanket PB and the continuous paper W come into contact S: a predetermined rotary press operating speed L0 for printing the blanket surface inspection printing surface L0: the blanket PB The length of the blanket cylinder BC equipped with the circumference Lb divided by 8 (reference length)

Claims (9)

A plurality of printing apparatuses having a plate cylinder, a blanket cylinder, and an inking mechanism are sequentially passed through the continuous paper so as to be in contact with the blanket of the blanket cylinder of each printing apparatus. In the method of printing a blanket surface inspection printing surface by an offset rotary press provided with an offset rotary printing unit that prints the ink supplied to the printing plate on the continuous paper via the blanket surface,
A step of operating the offset rotary press at a predetermined speed and supplying ink almost uniformly to the entire surface of the printing plate of the plate cylinder by an inking mechanism;
Printing the ink on the entire surface of the printing plate in a solid state via a blanket surface at different positions along the running direction of the continuous paper by the plurality of printing devices;
Have
In the printing step, the timing of the operation from the start to the end of printing of the printing apparatus, the interval between the positions where the continuous paper of the printing apparatus contacts the blanket, and the blanket cylinder provided with the blanket. The peripheral surface length, the length of the solid printing portion by the successive printing devices, the length of the blank portion provided between the solid printing portions, the blanket in the blanket cylinder during the printing operation in each successive printing device And the printing plate according to the result obtained from the circumferential surface length along the rotational direction from the position where the printing plate contacts the position where the blanket and the continuous sheet contact and the predetermined operation speed of the rotary press. To print blanket surface inspection printing surface. In the method of printing the printing surface for blanket surface inspection according to claim 1,
The interval between the positions where the continuous paper contacts the blanket of the printing apparatus that is in succession in the running direction of the continuous paper is Pmn, the circumferential surface length of the blanket cylinder provided with the blanket is Lb, the length of the printing portion of each solid is Li, The length of the blank portion provided between the printing units of the successive printing devices is Lw, and the printing device located on the upstream side in the running direction of the printing device succeeding and following the running direction of the continuous paper is during printing operation. In the blanket cylinder BC of the blanket PB and the printing plate PP, the peripheral surface length Lm along the rotation direction from the position where the blanket PB and the continuous paper W contact to the position where the blanket PB and the continuous paper W contact each other, The position where the blanket PB and the continuous paper W come into contact with each other from the position where the blanket PB and the printing plate PP come into contact with each other in the blanket cylinder BC at the time of printing operation of the printing apparatus located on the downstream side in the traveling direction of the apparatus. When the circumferential surface length Ln of the rotational direction of up, in terms of satisfying the Li ≧ Lb,
(Pmn + Lm-Ln)-(Li + Lw) <0
When the relationship is, start the printing operation by the printing device located downstream in the running direction of the continuous paper,
(Pmn + Lm-Ln)-(Li + Lw)> 0
When the relationship is, start the printing operation by the printing device located upstream in the running direction of the continuous paper in advance or simultaneously start the printing operation by successive printing devices,
(Pmn + Lm-Ln)-(Li + Lw) = 0
A printing method for printing a blanket surface is characterized by simultaneously starting a printing operation by a printing device that is in succession in the running direction of continuous paper. In the method of printing the printing surface for blanket surface inspection according to claim 1,
The interval between the positions where the continuous paper contacts the blanket of the printing apparatus that is in succession in the running direction of the continuous paper is Pmn, the circumferential surface length of the blanket cylinder provided with the blanket is Lb, and the length of the printing portion of the whole solid is Li, The length of the blank portion provided between the printing units of the printing apparatuses that follow each other is Lw, the predetermined operation speed of the rotary press is S, and the running direction of the printing apparatus that follows and follows the running direction of the continuous paper. Peripheral surface length along the rotational direction from the position where the blanket PB and the printing plate PP are in contact with each other to the position where the blanket PB and the continuous paper W are in contact with each other in the blanket cylinder BC during printing operation of the printing apparatus located on the upstream side Lm, a printing device located downstream in the traveling direction of the printing device that is in succession on the continuous paper traveling path, is moved from the position where the blanket PB and the printing plate PP are in contact with each other in the blanket cylinder BC during printing operation. When the banquet PB and the continuous paper W has the circumferential surface length Ln of the rotational direction to the position in contact, in terms of satisfying the Li ≧ Lb,
(Pmn + Lm-Ln)-(Li + Lw) <0
Therefore, the printing operation by the printing device located downstream in the running direction of the continuous paper is more time-consuming than the printing operation by the printing device located upstream.
| (Pmn + Lm−Ln) − (Li + Lw) | / S
Only start ahead,
(Pmn + Lm-Ln)-(Li + Lw)> 0
In this relationship, the printing operation by the printing device located upstream in the running direction of the continuous paper is more time-consuming than the printing operation by the printing device located downstream.
| (Pmn + Lm−Ln) − (Li + Lw) | / S
Only start in advance or simultaneously start printing operations by successive printing devices,
(Pmn + Lm-Ln)-(Li + Lw) = 0
A printing method for printing a blanket surface is characterized by simultaneously starting a printing operation by a printing device that is in succession in the running direction of continuous paper. The method for printing the blanket surface inspection printing surface according to claim 1,
After the printing operation of the printing device that has started the printing operation is started, the printing device located upstream is started by the printing device.
(Li + Lm) / S
In a printing device located downstream after a lapse of time,
After starting the printing operation by the printing device
(Li + Ln) / S
A method for printing a printing surface for blanket surface inspection, characterized in that it is terminated after a lapse of time. A plurality of printing apparatuses having a plate cylinder, a blanket cylinder, and an inking mechanism are sequentially passed through the continuous paper so as to be in contact with the blanket of the blanket cylinder of each printing apparatus. In an offset rotary press equipped with an offset rotary printing unit that prints ink supplied to a printing plate on the continuous paper via a blanket surface,
Means for operating the offset rotary press at a predetermined speed and supplying ink almost uniformly to the entire surface of the printing plate of the plate cylinder by an inking mechanism;
Means for printing the ink on the entire surface of the printing plate in a solid state via a blanket surface at different positions along the running direction of the continuous paper by the plurality of printing devices;
Have
The timing of the operation of the printing device from the start to the end of printing in the printing means is determined according to the interval between the positions where the continuous paper of the printing device contacts the blanket and the blanket cylinder provided with the blanket. The peripheral surface length, the length of the solid printing portion by the successive printing devices, the length of the blank portion provided between the solid printing portions, the blanket in the blanket cylinder during the printing operation in each successive printing device In accordance with the result obtained from the peripheral surface length along the rotational direction from the position where the printing plate contacts with the position where the blanket and continuous paper contact, and the predetermined operation speed of the rotary press,
An offset rotary press comprising a control device for automatically operating a rotary press to perform printing on a printing surface for blanket surface inspection. A plurality of printing apparatuses having a plate cylinder, a blanket cylinder, and an inking mechanism are sequentially passed through the continuous paper so as to be in contact with the blanket of the blanket cylinder of each printing apparatus. In an offset rotary press equipped with an offset rotary printing unit that prints ink supplied to a printing plate on the continuous paper via a blanket surface,
Means for operating the offset rotary press at a predetermined speed and supplying ink almost uniformly to the entire surface of the printing plate of the plate cylinder by an inking mechanism;
Means for printing the ink on the entire surface of the printing plate in a solid state via a blanket surface at different positions along the running direction of the continuous paper by the plurality of printing devices;
Have
The interval between the positions where the continuous paper contacts the blanket of the printing apparatus that is in succession in the running direction of the continuous paper is Pmn, the circumferential surface length of the blanket cylinder provided with the blanket is Lb, the length of the printing portion of each solid is Li, The length of the blank portion provided between the printing units of the successive printing devices is Lw, and the printing device located on the upstream side in the running direction of the printing device succeeding and following the running direction of the continuous paper is during printing operation. In the blanket cylinder BC of the blanket PB and the printing plate PP, the peripheral surface length Lm along the rotation direction from the position where the blanket PB and the continuous paper W contact to the position where the blanket PB and the continuous paper W contact each other, The position where the blanket PB and the continuous paper W come into contact with each other from the position where the blanket PB and the printing plate PP come into contact with each other in the blanket cylinder BC at the time of printing operation of the printing apparatus located on the downstream side in the traveling direction of the apparatus When the circumferential surface length Ln of the rotational direction of up, in terms of satisfying the Li ≧ Lb,
(Pmn + Lm-Ln)-(Li + Lw) <0
When the relationship is, start the printing operation by the printing device located downstream in the running direction of the continuous paper,
(Pmn + Lm-Ln)-(Li + Lw)> 0
When the relationship is, start the printing operation by the printing device located upstream in the running direction of the continuous paper in advance or simultaneously start the printing operation by successive printing devices,
(Pmn + Lm-Ln)-(Li + Lw) = 0
When it is in the relationship, so as to start the printing operation by the printing device that is in succession in the running direction of the continuous paper,
An offset rotary press comprising a control device for automatically operating a rotary press to perform printing on a printing surface for blanket surface inspection. A plurality of printing apparatuses having a plate cylinder, a blanket cylinder, and an inking mechanism are sequentially passed through the continuous paper so as to be in contact with the blanket of the blanket cylinder of each printing apparatus. In an offset rotary press equipped with an offset rotary printing unit that prints ink supplied to a printing plate on the continuous paper via a blanket surface,
Means for operating the offset rotary press at a predetermined speed and supplying ink almost uniformly to the entire surface of the printing plate of the plate cylinder by an inking mechanism;
Means for printing the ink on the entire surface of the printing plate in a solid state via a blanket surface at different positions along the running direction of the continuous paper by the plurality of printing devices;
Have
The interval between the positions where the continuous paper contacts the blanket surface of the printing apparatus that is in succession in the running direction of the continuous paper is Pmn, the circumferential surface length of the blanket cylinder provided with the blanket is Lb, and the length of the printing portion of the entire solid is Li. , The length of the blank portion provided between the printing units of the successive printing apparatuses is Lw, the predetermined operation speed of the rotary press is S, and the running direction of the printing apparatus succeeding and following the running direction of the continuous paper Of the printing apparatus located on the upstream side of the sheet from the position where the blanket PB and the printing plate PP contact in the blanket cylinder BC during printing operation to the position where the blanket PB and the continuous paper W contact each other along the rotational direction From the position where the blanket PB and the printing plate PP are in contact with each other in the blanket cylinder BC at the time of printing operation of the printing apparatus located on the downstream side in the traveling direction of the printing apparatus that is continuous with the length Lm and the continuous paper traveling path. When the Ranketto PB and the continuous paper W has the circumferential surface length Ln of the rotational direction to the position in contact, in terms of satisfying the Li ≧ Lb,
(Pmn + Lm-Ln)-(Li + Lw) <0
Therefore, the printing operation by the printing device located downstream in the running direction of the continuous paper is more time-consuming than the printing operation by the printing device located upstream.
| (Pmn + Lm−Ln) − (Li + Lw) | / S
Only start ahead,
(Pmn + Lm-Ln)-(Li + Lw)> 0
In this relationship, the printing operation by the printing device located upstream in the running direction of the continuous paper is more time-consuming than the printing operation by the printing device located downstream.
| (Pmn + Lm−Ln) − (Li + Lw) | / S
Only start in advance or simultaneously start printing operations by successive printing devices,
(Pmn + Lm-Ln)-(Li + Lw) = 0
When it is in the relationship, so as to start the printing operation by the printing device that is in succession in the running direction of the continuous paper,
An offset rotary press comprising a control device for automatically operating a rotary press to perform printing on a printing surface for blanket surface inspection. The control device according to claim 5 to claim 7,
After the printing operation of the printing device that has started the printing operation is started, the printing device located upstream is started by the printing device.
(Li + Lm) / S
In a printing device located downstream after a lapse of time,
After starting the printing operation by the printing device
(Li + Ln) / S
An offset rotary press characterized by being terminated only after a lapse of time. A plurality of printing apparatuses having a plate cylinder, a blanket cylinder, and an inking mechanism are sequentially passed through the continuous paper so as to be in contact with the blanket of the blanket cylinder of each printing apparatus. A control program that can be executed in a control computer for an offset rotary press provided with an offset rotary printing unit that prints ink supplied to a printing plate on the continuous paper via a blanket surface,
When executed in the computer, the rotary press is automatically operated so as to print the blanket surface inspection printing surface by the method according to any one of claims 1 to 4. , Offset rotary press control program.

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