Printing apparatus and printing method with measurement of a carrier thickness
A print section patterns a coating layer to form a pattern layer on a carrier and then transfers the pattern layer to a substrate. A controller obtains a first carrier thickness by measuring the thickness of the carrier carrying the coating layer and adjusts a gap between the carrier carrying the coating layer and the printing plate based on the first carrier thickness immediately before the coating layer is patterned. The controller also obtains a second carrier thickness by measuring the thickness of the carrier carrying the pattern layer and adjusts a gap between the carrier carrying the pattern layer and the substrate based on the second carrier thickness immediately before the pattern layer is transferred.
1. A printing apparatus comprising:
a print section that patterns a coating layer to form a pattern layer on a carrier and then transfers the pattern layer to a substrate, the coating layer patterned by pressing a part of the carrier into contact with a printing plate with the coating layer carried on the carrier and the printing plate facing each other, the pattern layer transferred by pressing a part of the carrier into contact with the substrate with the pattern layer on the carrier and the substrate facing each other;
wherein the print section includes a first holder that alternately holds the printing plate and the substrate, and a second holder, spaced from the first holder in a first direction, that holds the carrier;
a meter that measures a thickness of the carrier;
wherein the meter includes a sensor that measures the thickness of the carrier from a measurement position distant from the second holder in a second direction and a sensor moving mechanism that moves the sensor between the measurement position and a retracted position distant from both the first and second holders;
a mover that relatively moves the printing plate and the substrate with respect to the carrier; and
a controller that obtains a first carrier thickness by measuring the thickness of the carrier carrying the coating layer by the meter and adjusts a gap between the carrier carrying the coating layer and the printing plate by controlling the mover based on the first carrier thickness immediately before the coating layer is patterned, and obtains a second carrier thickness by measuring the thickness of the carrier carrying the pattern layer by the meter and adjusts a gap between the carrier carrying the pattern layer and the substrate by controlling the mover based on the second carrier thickness immediately before the pattern layer is transferred;
wherein the controller causes the sensor moving mechanism to move and position the sensor to the measurement position to measure the thickness of the carrier and causes the sensor moving mechanism to move and position the sensor to the retracted position before patterning the coating layer and transferring the pattern layer by controlling the sensor moving mechanism before bringing a part of the carrier into contact with the substrate.
2. The printing apparatus according to claim 1 , wherein:
the mover moves the first holder in the first direction and the second direction, the second direction being opposite to the first direction.
3. The printing apparatus according to claim 1 , wherein:
the mover moves the second holder in the first direction and a second direction opposite to the first direction.
4. The printing apparatus according to claim 1 , wherein:
the mover moves the first and second holders in the first direction and a second direction opposite to the first direction.
5. A printing method, comprising:
patterning a coating layer with a print section to form a pattern layer on a carrier by pressing a part of the carrier into contact with a printing plate with the coating layer carried on the carrier and the printing plate facing each other; and
transferring the pattern layer to a substrate by pressing a part of the carrier into contact with the substrate with the pattern layer on the carrier and the substrate facing each other;
wherein:
the print section includes a first holder that alternately holds the printing plate and the substrate, a second holder, spaced from the first holder in a first direction, that holds the carrier, and a meter that measures a thickness of the carrier;
the meter includes a sensor that measures the thickness of the carrier from a measurement position distant from the second holder in a second direction and a sensor moving mechanism that moves the sensor between the measurement position and a retracted position distant from both the first and second holders;
immediately before the coating layer is patterned, a first carrier thickness is obtained by measuring the thickness of the carrier carrying the coating layer and a gap between the carrier carrying the coating layer and the printing plate is adjusted based on the first carrier thickness; and
immediately before the pattern layer is transferred, a second carrier thickness is obtained by measuring the thickness of the carrier carrying the pattern layer patterned in the patterning step, and a gap between the carrier carrying the pattern layer and the substrate is adjusted based on the second carrier thickness.
6. A printing method according to claim 5 , wherein the carrier comprises a blanket formed by a layer comprising a material that can swell with the passage of time.
7. A printing method according to claim 6 , wherein the layer is made of silicone rubber.