Suction roller, ink-jet printer and suction width adjustment method by suction roller
AssigneeSCREEN Holdings Co., Ltd.
InventorsHitoshi MATSUYA, Shinsuke YAMASHITA, Takaharu YAMAMOTO
Life of this patent
Estimating the term…
Abstract
The overlapping regions L are formed by overlapping the outer cylinder vent holes and the inner cylinder vent holes. If the suction port of the inner cylinder receives a suction force from the blower, air is sucked toward the suction port from the suction chamber facing the overlapping region L of the inner cylinder vent hole and the outer cylinder vent hole, out of the plurality of suction chambers, via the overlapping region L. The outer cylinder and the inner cylinder are so configured that the overlapping region L becomes narrower in the rotation direction Dr from the center toward the both ends in the axial direction Da.
Claims25
A suction roller conveying a base material while sucking and supporting the base material, comprising:
- a cylindrical roller having an outer peripheral surface formed with a plurality of openings to suck and support the base material, the cylindrical roller configured to rotate about a cylindrical axis,
- an outer cylinder having an outer peripheral surface formed with an outer cylinder vent hole through which air passes, the outer cylinder being inserted into the cylindrical roller;
- an inner cylinder having a suction port receiving a suction force from a suction source and an outer peripheral surface formed with an inner cylinder vent hole through which air passes, the inner cylinder being inserted in the outer cylinder;
- and
- a plurality of suction chambers formed to be arranged in a longitudinal direction between an inner peripheral surface of the cylindrical roller and the outer peripheral surface of the outer cylinder,
- the cylindrical roller being configured such that each of the plurality of openings communicates with the corresponding one of the plurality of suction chambers,
- an overlapping region being formed by overlapping the outer cylinder vent hole and the inner cylinder vent hole,
- the outer cylinder and the inner cylinder being configured such that air is sucked toward the suction port via the overlapping region from the suction chamber facing the overlapping region of the inner cylinder vent hole and the outer cylinder vent hole, out of the plurality of suction chambers, when the suction port of the inner cylinder receives a suction force from the suction source, and
- the outer cylinder and the inner cylinder being configured such that the overlapping region becomes narrower from a center toward both ends in the longitudinal direction.
A suction roller conveying a base material while sucking and supporting the base material, comprising:
- a cylindrical roller having an outer peripheral surface formed with a plurality of openings to suck and support the base material, the cylindrical roller configured to rotate about a cylindrical axis,
- an outer cylinder having an outer peripheral surface formed with an outer cylinder vent hole, through which air passes, the outer cylinder being inserted into the cylindrical roller;
- an inner cylinder having a suction port receiving a suction force from a suction source and an outer peripheral surface formed with an inner cylinder vent hole, through which air passes, the inner cylinder being inserted into the outer cylinder and configured to be relatively movable in a predetermined moving direction with respect to the outer cylinder;
- and
- a plurality of suction chambers formed to be arranged in a longitudinal direction between an inner peripheral surface of the cylindrical roller and the outer peripheral surface of the outer cylinder,
- the cylindrical roller being configured such that each of the plurality of openings communicates with the corresponding one of the plurality of suction chambers,
- an overlapping region being formed by overlapping the outer cylinder vent hole and the inner cylinder vent hole,
- the outer cylinder and the inner cylinder being configured such that air is sucked toward the suction port via the overlapping region from the suction chamber facing the overlapping region of the inner cylinder vent hole and the outer cylinder vent hole, out of the plurality of suction chambers, when the suction port of the inner cylinder receives a suction force from the suction source,
- a length of the overlapping region in the moving direction changing according to position in the longitudinal direction, and
- the outer cylinder and the inner cylinder being configured such that the length of the overlapping region in the moving direction being adjustable by relatively moving the inner cylinder in the moving direction with respect to the outer cylinder to change a positional relationship between the outer cylinder vent hole and the inner cylinder vent hole.
An ink-jet printer printing an image on a base material by supplying an ink while conveying the base material, comprising:
- a conveyor including a suction roller to suck and support the base material, the conveyor conveying the base material;
- a printing part configured to print an image on the base material being conveyed by the conveyor by discharging an ink from an ink-jet nozzle;
- an input part to which data representing a width of the base material is input;
- a suction part configured to suck the suction roller;
- a switching part configured to switch a suction width of the base material by the suction roller;
- and
- a controller,
- the controller including a switching controller configured to control the switching part to switch the suction width of the suction roller according to the width of the base material input to the input part.
A suction width adjustment method by a suction roller in an ink-jet printer printing an image on a base material by supplying an ink while conveying the base material by a conveyor including the suction roller to suck and support the base material, comprising:
- inputting data representing a width of the base material to an input part;
- and
- controlling a switching part switching the suction width such that the suction width of the suction roller to suck the base material is switched according to the width of the base material input to the input part.
Dependencies are inferred from the claim text.