CN220681942U - Printing apparatus - Google Patents

Abstract

The utility model provides a printing apparatus comprising at least one printing cylinder, a varnish cylinder and a blanket. The varnish cylinder is disposed downstream of the print cylinder. The rubber cloth is coated on the surface of the gloss oil roller, a concave with a preset shape is processed on one side of the rubber cloth, which is away from the gloss oil roller, and the concave does not penetrate through the rubber cloth in the radial direction of the gloss oil roller. After the printing stock is printed by at least one printing roller, a varnish area with a preset shape is formed on the surface of the printing stock by a rubber blanket through a varnish roller. The embodiment of the utility model can be used for forming a hollowed or irregularly-shaped local gloss oil area, saves working procedures, improves production efficiency, shortens production period, can greatly reduce production cost, and meanwhile, the printing equipment can be also applied to the preparation process of the printed matter of the full gloss oil layer, and has wide application range.

Description

Printing apparatus

Technical Field

The present utility model relates generally to the field of printing technology, and in particular to a printing device.

Background

Part of the printed matter also forms a gloss oil layer on the surface of the ink layer, such as a poster, a wall calendar, a hardcover book and the like. The gloss oil layer not only can protect the ink layer, but also has smooth surface and certain glossiness, and can improve the visual effect and the touch effect of the printed matter.

At present, the formation of a gloss oil layer on the surface of a printed matter is mainly realized through a gloss oil passing machine, after printing is finished, a layer of gloss oil layer is formed on the surface of the printed matter through the gloss oil passing machine, and the printed matter full of the gloss oil layer can be formed by using a template with fixed specification, so that the oil passing process is relatively simple. However, for printed matter in which a gloss oil layer is formed through hollowing, a printing plate matched with a printing pattern, usually a resin plate, needs to be customized, the cost is high, the printing plate is only suitable for the products in the batch, the recycling value is not possessed, and the waste is serious.

The matters in the background section are only those known to the inventors and do not, of course, represent prior art in the field.

Disclosure of Invention

In view of one or more of the drawbacks of the prior art, an object of the present utility model is to provide a printing apparatus, comprising:

at least one print cylinder;

a varnish cylinder disposed downstream of the print cylinder; and

the rubber blanket is coated on the surface of the gloss oil roller, a concave with a preset shape is processed on one side, away from the gloss oil roller, of the rubber blanket, and the concave does not penetrate through the rubber blanket in the radial direction of the gloss oil roller;

after the printing object passes through the at least one printing roller, a varnish area with a preset shape is formed on the surface of the printing object through the varnish roller by the rubber blanket.

According to one aspect of the utility model, the depth of the depressions formed in the blanket ranges from 0.4mm to 0.8mm and is less than or equal to one half the total thickness of the blanket.

According to one aspect of the utility model, the depressions formed in the blanket are reverse machined according to the design location of the gloss oil area on the substrate; the rubber blanket is tensioned along the circumferential direction of the gloss oil roller, and the concave shape is subjected to tensioning correction of 0.5% -1.5% along the circumferential direction of the gloss oil roller.

According to one aspect of the utility model, the tensioning correction is based on a central line of the blanket in the circumferential direction of the varnish cylinder, and the depressions on both sides of the central line are corrected by 0.5% -1.5% in a direction approaching the central line; the correction ratio of the pits on the same blanket is the same.

According to one aspect of the utility model, the blanket is fixed and tensioned in the circumferential direction of the gloss oil cylinder through a plate clamp, and the overall size of the blanket meets the full plate specification of the gloss oil cylinder.

According to one aspect of the utility model, the varnish area formed on the surface of the printing material by the blanket completely covers the printing area formed on the printing material by the printing cylinder.

According to one aspect of the utility model, wherein the boundary of the recess formed in the blanket corresponds to the boundary of the substrate, the blanket covers the entire layout of the substrate.

According to an aspect of the present utility model, the printing apparatus further includes an anilox roller abutting against the blanket, the anilox roller being opposite in rotation direction to the varnish roller and configured to uniformly form varnish on the blanket surface in a region other than the recess.

According to one aspect of the utility model, the printing apparatus further comprises a bin and a squeegee, the bin storing varnish therein, the bin being adjacent to the surface of the anilox roller, the anilox roller capturing varnish from the bin as it rotates; the scraper is abutted against or close to the surface of the anilox roller, and the position of the scraper abutted against or close to the anilox roller is located between the stock bin and the gloss oil roller in the rotation direction of the anilox roller and is configured to remove the gloss oil remained on the anilox roller.

According to one aspect of the utility model, the printing apparatus further comprises a pressure cylinder abutting the blanket, the direction of rotation of the pressure cylinder being opposite to the direction of rotation of the varnish cylinder, the substrate being located on a surface of the pressure cylinder.

Compared with the prior art, the embodiment of the utility model provides the printing equipment, the gloss oil area is formed on the printing stock through the gloss oil roller and the rubber cloth with the concave processing of the preset shape, the connection with the printing process is realized, the printing process and the oil passing process are finished simultaneously by one piece of equipment, the material cost and the processing cost of the rubber cloth are far lower than those of the template of the gloss oil machine, the printing equipment in the embodiment of the utility model can be used for forming the hollowed-out or irregularly-shaped local gloss oil area, the working procedure is saved, the production efficiency is improved, the production period is shortened, the production cost is greatly reduced, and meanwhile, the printing equipment can be also applied to the preparation process of the full gloss oil layer.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic side view of a printing apparatus in one embodiment of the present utility model;

FIG. 2 is an expanded schematic view of a blanket in one embodiment of the utility model.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, and may be mechanically connected, electrically connected, or may communicate with each other, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Fig. 1 shows a specific structure of a printing apparatus 1 according to an embodiment of the present utility model, and the printing apparatus 1 will be described below with reference to fig. 1.

As shown in fig. 1, the printing apparatus 1 includes at least one printing cylinder 10, a varnish cylinder 20 and a blanket 30, only one printing cylinder 10 being shown in fig. 1, and in other embodiments of the present utility model, a plurality of printing cylinders 10 may be provided for printing different areas or for printing different colors, wherein the specific structure and printing process of the printing cylinder 10 are not limited, and a conventional offset printing apparatus and printing process may be referred to, for example, four-color printing using four-color inks.

The varnish cylinder 20 is disposed downstream of the printing cylinder 10, wherein downstream means downstream of the movement direction of the printing material 2 in the printing process, that is, the printing material 2 passes through the printing cylinder 10 first, and then moves to the position of the varnish cylinder 20 after the printing process is completed, specifically, the printing material 2 may be moved by a conveying device such as a cylinder, a conveyor belt, or the printing material 2 after printing may be transferred to the varnish cylinder 20 by using a manipulator with a grabbing function. According to a preferred embodiment of the present utility model, the gloss oil cylinder 20 can directly use the cylinder in the offset lithographic printing apparatus, or a new cylinder is added to the existing offset lithographic printing apparatus as the gloss oil cylinder 20, so that the improvement cost is low, and the normal use of the offset lithographic printing apparatus is not affected.

The blanket 30 is wrapped on the surface of the varnish cylinder 20, specifically, may be a full wrapping form of completely covering the varnish cylinder 20, or may be a form of covering a large part of the circumferential area of the varnish cylinder 20 by the blanket 30 as shown in fig. 1, wherein two side edges of the blanket 30 are fixed on the varnish cylinder 20, for example, by a plate clamp, and the covering range of the blanket 30 on the varnish cylinder 20 can be adjusted by the plate clamp at a position close to the plate clamp, namely, the tension force on two sides of the blanket 30 is adjusted, so as to further control the deformation of the blanket 30. The blanket 30 is a flexible material that serves as a cushioning compression layer that returns quickly to deformation, and is less prone to adhesive residue on the surface, and is also useful in existing printing processes, such as forming an elastic layer between the cylinder and the plate, where the blanket can provide some deformation to ensure adequate contact when the plate acquires ink and the plate is printed on the substrate.

As shown in fig. 2, a side of the blanket 30 facing away from the varnish cylinder 20 is formed with a recess 31 of a predetermined shape, and the recess 31 does not penetrate the blanket 30 in the radial direction of the varnish cylinder 20, i.e., the recess 31 forms a sink but not penetrating groove shape on the surface of the blanket 30, and preferably, the depth of the recess 31 on the blanket 30 is substantially the same. In a specific application, the processing depth is preset, for example, by knife-wire machining, a knife-wire of a preset shape is formed on the surface of the blanket 30, and the portion to be removed is torn off from the surface of the blanket 30. The blanket 30 is a layered structure, specifically including a plurality of layers of fiber products and synthetic rubber, and is integrally combined by means of hot melting or adhesion, etc., each layer can be separated, knife lines are formed on the surface of the blanket 30, and the knife lines do not penetrate the blanket 30, so that part of the structure in the blanket 30 can be manually removed, and a recess 31 with a preset shape in the embodiment is formed. For printing forming the gloss oil layer, the gloss oil layer has no color, and the dimensional accuracy of the covered range is also generally smaller than that of the printing alignment, so that the situation that the pit 31 is formed by using a cutter wire cutting mode does not cause dislocation, and for the situation that the rubber blanket 30 is partially covered with the gloss oil cylinder 20, the printing range of the printing stock is not larger than that of the rubber blanket 30, the missing printing is avoided, and the rubber blanket 30 can process the obtained pit 31 at the position corresponding to the printing stock 2 according to the covered area of the printing stock on the gloss oil cylinder 20.

After the printing of the printing material 2 by the at least one printing cylinder 10, a varnish region of a predetermined shape is formed on the surface of the printing material 2 by the blanket 30 via a varnish cylinder, wherein varnish is, for example, UV varnish, and after the varnish region is formed on the printing material 2, a varnish layer can be formed by a subsequent curing process. Specifically, varnish is attached to the surface of the blanket 30, and the blanket 30 and the printing material 2 relatively move with the rotation of the varnish cylinder 20, and varnish attached to the surface of the blanket 30 is formed on the printing material 2. The position of the recess 31 with the preset shape is not adhered with gloss oil, or the position of the recess 31 is not contacted with the surface of the printing stock 2, so that the gloss oil area is not formed at the position corresponding to the recess 31 area in the printing stock 2, that is, the gloss oil area formed on the surface of the printing stock is complementary with the recess 31 in the blanket 30 in shape within the full range, and the recess 31 on the blanket 30 is processed according to the shape of the gloss oil area formed on the printing stock 2, that is, the recess 31 formed on the blanket 30 is reversely processed according to the design position of the gloss oil area on the printing stock 2. In the case where it is necessary to form a full gloss oil on the printing material 2, the entire size range of the printing material 2 may be reserved on the blanket 30, further, the recess 31 may be formed on the edge of the entire size of the printing material 2, for example, the printing material 2 is rectangular, and the recess 31 may be formed on the blanket 30 in a rectangular frame shape reserved in the middle portion.

The embodiment realizes the connection of the varnish forming process and the printing process, and can simultaneously carry out the printing process and the varnish forming process by using the same equipment, for example, the printing equipment can be modified at low cost. The working procedures are reduced, the production efficiency can be improved, and the production cost is reduced. Further, the blanket 30 in this embodiment can be used to use the waste blanket or the recycled blanket used in the printing operation, so that the surface of the blanket is ensured to be free from defects, the size is complete, and the forming of the recess 31 by the wire cutting machine can be performed quickly at low cost. Even with the use of entirely new blankets 30, the cost is typically around 600 yuan, which is far lower than the cost of custom resin plates. And the size of the blanket used in the existing printing machine is generally matched with the size of the largest-sized printing stock supported by the printing machine, so that the blanket 30 with complete size is not needed in the production process of forming the gloss oil area on the printing stock with smaller size, and therefore, part of the surface of the blanket 30 is not damaged and can be fully reused. The printing apparatus 1 in this embodiment can save the process, shorten the production cycle, and can greatly reduce the production cost in the local varnish area for forming the hollowed-out or irregular shape.

According to a preferred embodiment of the present utility model, the depth of the recess 31 formed in the blanket 30 ranges from 0.4mm to 0.8mm, and the depth of the recess 31 is less than or equal to one half of the total thickness of the blanket 30, for example, 2mm, the depth of the recess 31 is preferably 0.6mm, and a structure having a thickness of 1.4mm on the entire structure of the blanket 30 remains connected. According to the blanket 30 described above, which is a layered structure, the depth of cut of the depressions 31 is preferably the bonding location between the two layers.

Too small a depth of the recess 31 may adhere varnish to a portion other than the varnish region on the printing stock 2 to affect the product quality of the printing stock 2, while too large a depth of the recess 31 may cause unstable structure of the blanket 30, and according to the foregoing, the material of the blanket 30 has a certain elasticity, and removing a portion of the region on the surface of the blanket 30 may cause a change in internal stress of the blanket 30 when stretching the blanket 30, so as to prevent the recess 31 in the blanket 30 from being significantly deformed, or the service life of the recess 31 is significantly reduced, and the depth of the recess 31 is controlled to be not more than one half of the total thickness of the blanket 30.

Further, in the preferred embodiment of the present utility model, the blanket 30 is tensioned along the circumference of the varnish cylinder 20, for example, the blanket 30 is rectangular in overall shape, and tangential force of the surface shape of the varnish cylinder 20 is applied to the edge of the blanket 30, for example, fixed and tensioned in the circumference of the varnish cylinder 20 by a plate clamp (not shown). The shape of the recess 31 is subjected to tension correction of 0.5% -1.5% in the circumferential direction of the gloss oil drum 20. Wherein the tensioning ensures that blanket 30 is in uniform contact with the surface of substrate 2, preventing wrinkling or other forms of deformation during the formation of the varnish areas.

Preferably, the overall size of the blanket 30 conforms to the full format of the varnish cylinder 20. According to a preferred embodiment of the present utility model, varnish cylinder 20 may be an original or newly added cylinder in an existing printing press, the circumferential size of which is a fixed value, and the blanket 30 is disposed in the same mating relationship with the plate of the printing cylinder 10, corresponding to the format of varnish cylinder 20. The overall size of the blanket 30 is not limited to the full plate size of the varnish cylinder 20, and the blanket 30 completely covers the varnish cylinder 20, for example, as shown in fig. 1, a gap (an area where the blanket 30 does not exist) is formed in the circumferential direction of the varnish cylinder 20, for example, the blanket 30 is fixed in the circumferential direction of the varnish cylinder 20 by using a plate clip, and a structure in which plate clips are matched is required at a preset position (the aforementioned gap position) in the circumferential direction of the varnish cylinder 20, so that the overall size of the blanket 30 is not the full plate size of the varnish cylinder 20 and the blanket 30 completely covers the entire circumferential range of the varnish cylinder 20.

In particular, the material of blanket 30 is elastic and deforms to some extent when pulled, and correspondingly, depressions 31 in blanket 30 deform. The blanket 30 in this embodiment is tensioned along the circumference of the varnish cylinder 20, so that deformation of the blanket 30 is apparent in the circumference of the varnish cylinder 20, but deformation occurring in the axial direction of the varnish cylinder 20 is negligible, and deformation of the blanket 30 after tensioning results in a deformation amount of approximately 0.5% -1.5% of the recess 31 according to the test comparison of the inventor. The deformation amounts at different positions in the conventional size are substantially equal, and it is preferable that the correction ratio of the depressions 31 at different positions on the same blanket 30 is the same, for example, all 1%.

In tensioning the blanket 30 on the varnish cylinder 20, taking the center line O of the blanket 30 in the circumferential direction of the varnish cylinder 20 as a reference, the tensioning correction at a ratio of 1% is taken as an example, and as shown in fig. 2, the directions of the concave 31 items located on both sides of the center line O near the center are corrected by 1%, for example, the concave 31 at a size of 100mm from the center line O is corrected by 1mm toward the center line O, and the concave 31 at a size of 200mm from the center line O is corrected by 2mm toward the center line O.

According to a specific embodiment of the utility model, the varnish area formed on the surface of the printing material 2 by the blanket 30 completely covers the printing area formed on the printing material 2 by the printing cylinder 10, and the varnish area range is obtained according to the design of the product, and in actual production, the varnish area corresponds to the printing area in general, preferably, a plurality of millimeters beyond the edge of the printing area, and is directly formed on the surface of the printing material 2, rather than only covering the printing area range.

The boundary of the recess 31 formed in the blanket 30 corresponds to the boundary of the printing material 2, and the blanket 30 covers the entire layout of the printing material 2. As shown in fig. 2, for example, the printing material 2 is a rectangular paper, the boundary of the recess 31 on the blanket 30 may correspond to the boundary of the printing material 2, and also form a substantially rectangular shape, and a protrusion (relative to the recess 31) flush with the surface of the blanket 30 is provided inside the rectangle to form a corresponding varnish region on the printing material 2. For other areas of blanket 30 beyond substrate 2, no treatment may be performed, i.e., without removing a portion of the surface of blanket 30, due to the fact that the area of substrate 2 is exceeded. Preferably, positioning means or points may also be provided to ensure that the blanket 30 is positioned accurately with the edges of the substrate 2.

As shown in fig. 1, according to a preferred embodiment of the present utility model, wherein the printing apparatus 1 further comprises an anilox roller 40, the anilox roller 40 is disposed in abutment with the blanket 30, and its rotation direction is opposite to that of the gloss oil cylinder 20, for uniformly forming gloss oil on the surface of the blanket 30 in other areas except for the depressions 31. Of course, in actual production, it cannot be guaranteed that the area of the recess 31 is not contaminated with varnish, but the varnish in the area of the recess 31 is not adhered to the printing stock 2, and the final product quality is not affected.

Further, the printing apparatus 1 further comprises a bin 50 and a squeegee 60, wherein the bin 50 stores varnish, and the bin 50 is close to the surface of the anilox roller 40, and varnish can be obtained from the bin 50 during rotation of the anilox roller 40, for example, by dipping varnish from the anilox roller 40, or by flowing varnish in the bin 50 towards the anilox roller 40. The doctor blade 60 abuts or approaches the surface of the anilox roller 40, and the position where the doctor blade 60 abuts or approaches the anilox roller 40 is located between the stock bin 50 and the gloss oil drum 20 in the rotation direction of the anilox roller 40, i.e., the doctor blade 60 is located upstream of the stock bin 50 in the rotation direction of the anilox roller 40, preferably, the doctor blade 60 approaches the stock bin 50. The scraper 60 is used to remove the varnish remaining on the surface of the anilox roller 40, and further, the scraper 60 may be configured to return the intercepted varnish to the silo 50, so as to realize the recycling of the varnish.

As shown in fig. 1, the printing apparatus 1 further includes a pressure cylinder 70, the pressure cylinder 70 abuts against the blanket 30, the rotation direction of the pressure cylinder 70 is opposite to the rotation direction of the varnish cylinder 20, the printing material 2 is located on the surface of the pressure cylinder 70, the pressure cylinder 70 cooperates with the varnish cylinder 20 to press the blanket 30 and the printing material 2 against each other, so that varnish on the surface of the blanket 30 adheres to the printing material 2 to form a varnish area. Further, as shown in fig. 1, the varnish roller 20 may be provided in an eccentric structure, with a long side near the pressure roller 70 and a short side near the anilox roller 40.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A printing apparatus, comprising:

at least one print cylinder;

a varnish cylinder disposed downstream of the print cylinder; and

the rubber blanket is coated on the surface of the gloss oil roller, a concave with a preset shape is processed on one side, away from the gloss oil roller, of the rubber blanket, and the concave does not penetrate through the rubber blanket in the radial direction of the gloss oil roller;

after the printing object passes through the at least one printing roller, a varnish area with a preset shape is formed on the surface of the printing object through the varnish roller by the rubber blanket.

2. The printing apparatus of claim 1, wherein the depressions formed in the blanket have a depth in the range of 0.4mm to 0.8mm and less than or equal to one half of the total thickness of the blanket.

3. The printing apparatus of claim 1 wherein the depressions formed in said blanket are reverse machined in accordance with the design location of the gloss oil area on said substrate; the rubber blanket is tensioned along the circumferential direction of the gloss oil roller, and the concave shape is subjected to tensioning correction of 0.5% -1.5% along the circumferential direction of the gloss oil roller.

4. A printing apparatus according to claim 3, wherein said tension correction is based on a center line of said blanket in a circumferential direction of said varnish cylinder, said depressions on both sides of said center line being corrected in a direction approaching said center line by 0.5% to 1.5%; the correction ratio of the pits on the same blanket is the same.

5. A printing apparatus according to claim 3, wherein the blanket is secured in the circumference of the varnish cylinder by a plate clamp and is tensioned, the blanket having an overall size which meets the full gauge of the varnish cylinder.

6. The printing apparatus of claim 1 wherein said blanket forms a varnish region on a surface of said substrate that completely covers a print region of said print cylinder formed on said substrate.

7. The printing apparatus of claim 6, wherein a boundary of said recess formed in said blanket corresponds to a boundary of said substrate, said blanket covering an entire layout of said substrate.

8. The printing apparatus of any of claims 1 to 7, further comprising an anilox roller abutting the blanket, the anilox roller being counter-rotating to the varnish roller and configured to uniformly form varnish on a region of the blanket surface other than the recess.

9. The printing apparatus of claim 8 further comprising a silo and a squeegee, said silo having varnish stored therein, said silo being adjacent to a surface of said anilox roller, said anilox roller capturing varnish from said silo upon rotation; the scraper is abutted against or close to the surface of the anilox roller, and the position of the scraper abutted against or close to the anilox roller is located between the stock bin and the gloss oil roller in the rotation direction of the anilox roller and is configured to remove the gloss oil remained on the anilox roller.

10. The printing apparatus of any of claims 1 to 7, further comprising a pressure cylinder abutting the blanket, the pressure cylinder having a direction of rotation opposite to a direction of rotation of the varnish cylinder, the substrate being located on a surface of the pressure cylinder.