| 摘要 |
Ink Transfer Arrangement The present device comprises a plurality of doctor blades, each of which, in a preferred embodiment, has a width of a key zone. Each of the blades is disposed to be moved between the fountain roller of a printing press and the receiver roller of a roller train in the printing press. Each doctor blade is held by some force such as a solenoid in a first position whereat it scrapes away ink from the fountain roller for a predetermined time, so that the amount of ink lifted from the fountain roller is predictable while at the same time the system provides for changing the predetermined time to enable the amount of ink removed from ? the fountain roller to be varied. Each of the doctor blades is returned to a second position when the force is terminated, whereat each of the doctor blades comes in contact with a receiver roller which acts to wipe the ink from the respective doctor blades thus completing the transfer of ink from the fountain roller to the receiver roller of the roller train of a printing press. The amount of time that each blade is located in the first position is selectively controlled by a microprocessor in the preferred embodiment. |
