# US 4,392,431 A · Method to maintain smooth running of ink metering elements in ink fountains of printing machines

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- Number: US 4,392,431 A
- Document ID: US4392431A
- Status: Granted
- Kind: A
- Application number: 06/300,848
- Filed: 1981-09-10
- Granted: 1983-07-12
- Earliest claimed: 1980-09-10
- Assignees: Koenig & Bauer Aktiengesellschaft
- Inventors: Erich G. Wieland
- Web page: https://patentgrep.com/patent/US4392431A

## CPC

- B41F 31/04: with duct-blades or like metering devices
- B41F: PRINTING MACHINES OR PRESSES (manifolding devices or office printing machines B41L)

## Abstract

A method and apparatus to maintain smooth operation of ink metering elements in an ink fountain of a printing machine is disclosed. A plurality of ink metering elements are placed side by side in a longitudinal gap in the bottom of the ink fountain. Each of the ink metering elements has a longitudinal bore which extends through the element and which is in communication with lubricant grooves on the faces of each element. A suitable lubricant is forced through the bores of all the ink metering elements and out into the lubricant grooves on the faces of the elements. The use of this lubricant maintains the smooth operation of the ink metering elements by reducing friction between the elements and by removing ink and dirt particles from between adjacent elements. Any particles of ink or dirt which may become entrained in the lubricant can be removed by forcing out the spent lubricant and by adding fresh replacement lubricant.

## Claims

### Claim 1

A method of maintaining smooth running of individually adjustable ink metering elements of an ink fountain having an ink fountain roller in a printing machine wherein a plurality of said ink metering elements are disposed laterally side by side in a row in a bottom portion of said ink fountain parallel to an axis of rotation of said ink fountain roller, said method comprising the steps of: supplying a lubricant through a longitudinal borehole formed in each said ink metering element; and
pressing said lubricant from said longitudinal borehole in each said metering element into the space between front sides of immediately adjacent ones of said ink metering elements whereby ink and dirt particles are excluded from said spaces between adjacent ones of said ink metering elements thereby maintaining smooth running of said elements.

### Claim 2 (depends on 1)

The method according to claim 1, including the step of positioning said longitudinal boreholes of all said ink metering elements in fluid communication with each other.

### Claim 3 (depends on 2)

The method according to claim 2, further including the steps of closing said row of ink metering elements disposed side by side on their extremities by end plates and providing a lubricant feeding device which is in connection with said longitudinal boreholes on at least one of said end plates.

### Claim 4 (depends on 1)

The method according to claim 1 wherein the step of pressing said lubricant further includes the step of forcing said lubricating through a lubricating groove in at least one front side of each said ink metering element, said lubricating groove being in fluid communication with said longitudinal borehole.