GB1225740A - - Google Patents
Info
- Publication number
- GB1225740A GB1225740A GB1225740DA GB1225740A GB 1225740 A GB1225740 A GB 1225740A GB 1225740D A GB1225740D A GB 1225740DA GB 1225740 A GB1225740 A GB 1225740A
- Authority
- GB
- United Kingdom
- Prior art keywords
- roller
- lever
- film
- screw
- ductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F7/00—Rotary lithographic machines
- B41F7/20—Details
- B41F7/24—Damping devices
- B41F7/26—Damping devices using transfer rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Presses (AREA)
Abstract
1,225,740. Printing apparatus; damping apparatus. ADAMOVSKE STROJIRNY, NARODNI PODNIK. 30 June, 1969 [1 July, 1968], No. 32887/69. Heading B6C. The time of dwell of a messenger roller on the ductor roller of an offset damping system, is adjustable by means of stops which may be moved relative to a lever which moves with a cam follower through which the messenger roller is activated from a cam drive. In the apparatus shown the ductor roller 1 is driven from a driving gear-wheel 4 (not shown). A freely rotatably mounted cam 6 driven from a toothed wheel 7 has a different speed of rotation with respect to the ductor roller 1. Rocking motion of a two-armed lever 18 is transmitted through an adjusting screw 17 and lever 16 to the shaft 8 which is thereby turned. This motion is subsequently transmitted by stops 9 and set screws 10 to the brackets 11 which cause a removal of the messenger roller 12 from the roller 1 and the contact with the distributer roller 28. The change of amount of supplied dampening liquid is accomplished by adjustment of the width of the film of the dampening liquid from the ductor rollers 1. The width of the strip of the transferred film is determined by the duration of contacting movement of the roller 1 with the surface of the roller 12. In the position of Fig. 1 a narrow strip of dampening film is transferred the cam 6 being in its lowest position with respect to the roller 19. In the course of rotation of the cam 6, the two-armed lever 18 rocks and as its other extremity bears against the adjusting screw 17 (position I), and an immediate removal of the messenger roller 12 from the ductor roller 1 and pressing against the roller 28 is accomplished. If a larger amount of liquid is required the screw 17 is released to allow a clearance between the screw and the lower extremity of lever 18. Within this clearance the lever 18 oscillates freely until it bears against the screw 17. The roller 12 is for this period pressed against the roller 1 and the transferred strip of the film of dampening liquid is widened. In the case of complete retraction of the screw 17 to position II the maximum width of the film of transferred dampening liquid is obtained (Fig. 1).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS482168 | 1968-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1225740A true GB1225740A (en) | 1971-03-24 |
Family
ID=5391796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1225740D Expired GB1225740A (en) | 1968-07-01 | 1969-06-30 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3614927A (en) |
| JP (1) | JPS5218610B1 (en) |
| GB (1) | GB1225740A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985003257A1 (en) * | 1984-01-20 | 1985-08-01 | Varitronic Systems, Inc. | Lever driven hammer for dry film printer |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3814014A (en) * | 1968-06-17 | 1974-06-04 | H Dahlgren | Inker |
| DE2546522A1 (en) * | 1975-10-17 | 1977-04-21 | Heidelberger Druckmasch Ag | DEVICE FOR CHANGING THE WORKING METHOD OF GRIPPERS OF A REVERSING DRUM IN LATERAL AND RETRINTING MACHINES |
| US4087169A (en) * | 1975-11-14 | 1978-05-02 | Xerox Corporation | Transfer roller system |
| US4949637A (en) * | 1987-12-10 | 1990-08-21 | Keller James J | Self-metering dampening system for a lithographic press |
| DE102008061599A1 (en) * | 2008-12-11 | 2009-12-03 | Heidelberger Druckmaschinen Ag | Dampening device adjusting method for offset printing machine, involves adjusting contact pressure of one of immersed roller and dosing roller and/or offsetting of one roller relative to other roller by motor |
-
1969
- 1969-06-30 US US837708A patent/US3614927A/en not_active Expired - Lifetime
- 1969-06-30 GB GB1225740D patent/GB1225740A/en not_active Expired
- 1969-07-01 JP JP44051551A patent/JPS5218610B1/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985003257A1 (en) * | 1984-01-20 | 1985-08-01 | Varitronic Systems, Inc. | Lever driven hammer for dry film printer |
| US4579056A (en) * | 1984-01-20 | 1986-04-01 | Varitronic Systems, Inc. | Printing mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5218610B1 (en) | 1977-05-23 |
| DE1932713B2 (en) | 1975-06-05 |
| US3614927A (en) | 1971-10-26 |
| DE1932713A1 (en) | 1970-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |