Method for printing test and apparatus for doing the same

A printing test apparatus, including a base, an intaglio mount movable along a guide on the base, a head secured to said base, an impression cylinder rotatably mounted on said head and having a circumference adapted for receiving a printing sheet, and a doctor blade provided on said head comprising:

• a pneumatic cylinder for moving said intaglio having a cylinder tube fixed to said base and a piston rod connected to said intaglio mount;
• an impression cylinder unit including a bearing block and a first pressure cylinder for imparting a printing pressure to said impression cylinder, said bearing block vertically slidably supported on said head, said first pressure cylinder having a piston rod connected to one of said bearing block and said head and a cylinder tube fixed to the other of said bearing block and said head;
• a doctor blade support unit including a doctor blade support and a second pressure cylinder for adjusting a contact pressure of said doctor blade, said doctor blade support being vertically slidably supported on said head, said second pressure cylinder having a piston rod connected to one of said head and said doctor blade support and a cylinder tube fixed to the other of said head and said doctor blade;
• a pressure medium supply unit to supply a pressure medium to each of said pneumatic cylinder, a first pressure cylinder and second pressure cylinder;
• and
• means for selectively adjusting a pressure of said pressure medium in each of said cylinders.

A printing testing apparatus, including a base, an intaglio mount provided on said base, a head movable along a guide provided on said base, an impression cylinder rotatably mounted on said head and having a circumference adapted for receiving a printing sheet, and a doctor blade provided on said head comprising:

• a pneumatic cylinder for moving said head having a cylinder tube fixed to said base and a piston rod connected to said head;
• an impression cylinder unit including a bearing block and a first pressure cylinder for imparting a printing pressure to said impression cylinder, said bearing block being vertically slidably supported on said head, said first pressure cylinder having a piston rod connected to one of said bearing block and said head and a cylinder tube fixed to the other of said bearing block and said head;
• a doctor blade support unit including a doctor blade support and a second pressure cylinder for adjusting a pressure of contact of said doctor blade, said doctor blade support vertically slidably supported on said head, said second pressure cylinder having a piston rod connected to one of said head and said doctor blade support and a cylinder tube fixed to the other of said head and said doctor blade;
• a pressure medium supply unit to supply a pressure medium to each of said pneumatic cylinder, first pressure cylinder and second pressure cylinder;
• and
• means for selectively adjusting a pressure of said pressure medium in each of said cylinders.

A method for performing a printing test, comprising the steps of:

• dropping ink onto a flat intaglio;
• supplying said ink to a printing area on the intaglio by means of a doctor blade;
• transferring said ink from said printing area onto a printing sheet by reciprocating said intaglio underneath a rotatable impression cylinder at a predetermined printing pressure, said impression cylinder having said printing sheet mounted on a circumference thereof, wherein said reciprocating of said intaglio includes moving said intaglio from an initial position to perform a printing operation, stopping said intaglio and returning said intaglio to an initial position and is performed by means of a pneumatic cylinder;
• controlling said reciprocating of said intaglio by adjusting a pressure of air supplied to said pneumatic cylinder;
• controlling said predetermined printing pressure of said impression cylinder in relation to said intaglio by adjusting a pressure cylinder that is connected with said impression cylinder.

A method for performing a printing test, comprising the steps of:

• dropping ink onto a flat intaglio;
• supplying said ink to a printing area on the intaglio by means of a doctor blade;
• transferring said ink from said printing area onto a printing sheet by reciprocating one of a rotatable impression cylinder and said intaglio relative to the other of said rotatable impression cylinder and said intaglio at a predetermined printing pressure between said impression cylinder and said intaglio, said impression cylinder having said printing sheet mounted on a circumference thereof, wherein said reciprocating of one of said impression cylinder and said intaglio includes moving said one of said impression cylinder and said intaglio to perform a print operation, stopping said one of said impression cylinder and said intaglio and returning said one of said impression cylinder and said intaglio to an initial position and is performed by means of a pneumatic cylinder;
• controlling said reciprocating of said one of said impression cylinder and said intaglio by adjusting a pressure of fluid supplied to said pneumatic cylinder;
• controlling said predetermined printing pressure between said impression cylinder and said intaglio by adjusting a pressure cylinder that is interconnected with said impression cylinder.

A printing testing apparatus comprising a base, an intaglio mount, a head supported by said base, a rotatable impression cylinder rotatably mounted on said head and having a circumference adapted for receiving a printing sheet and a doctor blade provided on said head one of said intaglio and said impression cylinder being movable along a guide on the base, said printing testing apparatus further comprising:

• a pneumatic cylinder for moving said one of said intaglio and said impression cylinder having a cylinder tube fixed to said base and a piston rod connected to said intaglio mount;
• an impression cylinder unit including a bearing block and a first pressure cylinder for imparting a printing pressure to said impression cylinder, said bearing block vertically slidably supported on said head, said first pressure cylinder having a piston rod connected to one of said bearing block and said head and a cylinder tube fixed to the other of said bearing block and said head;
• a doctor blade support unit including a doctor blade support and a second pressure cylinder for adjusting a contact pressure of said doctor blade, said doctor blade support vertically slidably supported on said head, said second pressure cylinder having a piston rod connected to one of said head and said doctor blade support and a cylinder tube fixed to the other of said head and said doctor blade;
• a pressure medium supply unit to supply a pressure medium to each of said pneumatic cylinder, first pressure cylinder and second pressure cylinder;
• and
• means for adjusting a pressure of said pressure medium.