JPH0248357U

JPH0248357U -

Info

Publication number: JPH0248357U
Application number: JP12841788U
Authority: JP
Priority date: 1988-09-29
Filing date: 1988-09-29
Publication date: 1990-04-04

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図はグラビ
アオフセツト印刷機の正面図、第２図ａ，ｂはゴ
ムブランケツトの表面部分の部分拡大図で第２図
ａはその平面図、第２図ｂは断面図である。第３
図〜第６図は別実施例を示すゴムブランケツト凹
部の拡大図で、第３図は凹部が円錐体、円柱状ま
たは半球状である場合の平面図、第４図は凹部が
円柱または角柱のときの断面図、第５図は錐体の
底部を丸くした凹部の断面図、第６図は凹部が半
球状のときの断面図である。図において、２はインキング装置、３は版胴、
４は転写胴、５は被印刷物、６は輪体、７はゴム
ブランケツト、８はゴムブランケツト表面の凹部
である。 The drawings show an embodiment of the present invention; FIG. 1 is a front view of a gravure offset printing machine, FIGS. 2a and 2b are partially enlarged views of the surface portion of a rubber blanket, and FIG. 2a is a plan view thereof; FIG. 2b is a cross-sectional view. Third
6 to 6 are enlarged views of a recessed portion of a rubber blanket showing another embodiment, FIG. 3 is a plan view of a recessed portion having a conical, cylindrical or hemispherical shape, and FIG. 4 is a plan view of a recessed portion having a cylindrical or prismatic shape. FIG. 5 is a cross-sectional view of a concave portion with a rounded bottom portion, and FIG. 6 is a cross-sectional view of a concave portion having a hemispherical shape. In the figure, 2 is an inking device, 3 is a plate cylinder,
4 is a transfer cylinder, 5 is a printing medium, 6 is a wheel, 7 is a rubber blanket, and 8 is a concave portion on the surface of the rubber blanket.

Claims

[Scope of claims for utility model registration] 1. Rubber blanket 7 that receives ink from plate cylinder 3
A transfer cylinder for an offset printing machine, the surface of which is formed into a rough surface consisting of a large number of recesses 8 with a depth of 5 to 15 μm, and the rubber blanket 7 is attached to the outer periphery of a wheel 6 or a belt. 2. A transfer cylinder for an offset printing press according to claim 1, wherein the recessed portion 8 of the rubber blanket 7 is formed into a conical shape. 3. A transfer cylinder for an offset printing press according to claim 1, wherein said rubber blanket 7 is made of silicone resin. 4. In an offset printing machine that transfers ink supplied from an inking device 2 to a plate cylinder 3 to a transfer cylinder 4 and transfers the ink from the transfer cylinder 4 to a printing material 5 for printing, the transfer cylinder 4 is a printing medium according to claim 1. An offset printing machine comprising the transfer cylinder according to item 1.