Compact printing machine inker system

Details Compact printing machine inker system Compact printing machine inker system

1989-09-06

1991-03-12

Fisher, J. Reed

Printing

Inkers

Fountains

B41F 3108, B41F 2710

Patent

active

049984756

ABSTRACT:
The inker includes a chambered doctor blade unit (1) which defines an ink retention chamber. The ink retention chamber has an ink retaining ridge or strip (33) which extends from an upper surface towards the lower surface leaving a narrow ink passage gap (1') between the lower surface and the lower edge of the ridge or strip so that, upon selective connection of the unit (1) through a releasable coupling connection (5) of ink from a primary ink supply (3) or from a secondary ink supply (24, 40) of ink capacity substantially less than the ink capacity of the primary ink supply, ink within the ink retention chamber can be expelled under pressure being applied into said chamber, for example by compressed air, or sucked back into the cartridge. The cartridge permits application of a small quantity of ink, for example of different color than that of the primary ink supply, without disassembly of the entire inker. The compact inker formed by the doctor blade unit and the ink supply unit can readily be severed from the printing machine as a unitary group by disengaging a severable clutch (20), for example a claw clutch, provided to drive pumps (22) in the ink supply from a drive shaft (16, 531) common to a plurality of ink supply units and chambered doctor blade units, for example located axially adjacent each other along the anilox roller (6). The ink supply units have upwardly open troughs to catch ink being stripped off the anilox roller.

REFERENCES:
patent: 1137856 (1915-05-01), Halliwell
patent: 3099211 (1963-07-01), Hilgoe et al.
patent: 4373443 (1983-02-01), Matalia
patent: 4535693 (1985-08-01), Belvederi
Publication "Der Polygraph" 13-88 (The Polygraph), pp. 1102 and 1103, article by Josef-Peter Schramm: Gehort . . . die Zukunft, Verfahrensvergleich . . . (Does the Future Belong to Compact Inkers, Comparison between Offset and Offset-Anilox Methods).

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