Inkjet apparatus and method for controlling undulation on media
AssigneeHewlett-Packard Development Company, L.P.
InventorFernando Juan
Life of this patent
Estimating the term…
Abstract
An inkjet apparatus includes a media drive means for moving a medium through a print zone of the apparatus, and also includes a carriage, in which a printhead is mounted, for traversing the pint zone in a second direction. The apparatus also includes restraining means, co-operating with the drive means, to restrain the advance of a first portion of the medium through the print zone when moved by the drive means. A method for controlling undulation on media in a inkjet apparatus includes moving a medium through the print zone, and restraining the movement through the print zone of a first portion of the medium.
Claims17
An inkjet apparatus comprising:
- a media driver that applies a first force for moving a medium through a print zone of the apparatus in a first direction (X), wherein said medium includes at least a first portion and a second portion, and wherein said first force is applied in at least one location of said first portion to cause at least said first portion to move at a first speed;
- a carriage, in which a printhead is mounted, for traversing said print zone in a second direction (Y);
- and
- a restraining member, co-operating with said media driver and positioned to apply a second force to the medium, to restrain the advance of said second portion of the medium through the print zone when moved by said media driver, said first and second forces being applied substantially at the same time and causing the second portion to be moved at a second speed different from said first speed.
A method for controlling undulation on media in an inkjet apparatus comprising a print zone, said method comprising:
- moving a medium through the print zone by applying a first force to a first portion of said medium to move said first portion at a first speed;
- and
- applying a second force to a second portion of the medium to move said second portion at a second speed different from said first speed, said steps of moving and applying said second force being performed substantially at the same time.
A method for controlling undulation on media in an inkjet apparatus comprising a print zone, said method comprising:
- moving a medium through the print zone by applying a first force to a first portion of the medium to move said first portion at a first speed;
- and
- restraining the movement through the print zone of at least a second portion of the medium, wherein said step of restraining the movement includes the steps of actuating a restraining means by moving the medium, and applying on the second portion of the medium, by means of the restraining means, a second force which causes the second portion to move at a second speed lower than the first speed.
An inkjet apparatus comprising:
- a media driver that applies a first force for moving a medium through a print zone of the apparatus in a first direction, said medium including a first portion;
- and
- a rotary member that applies a second force to the medium to restrain the advance of said first portion of the medium through the print zone when moved by a wheel, said first and second forces being applied substantially at the same time.
An inkjet apparatus comprising:
- a media driver that applies a first force for moving a medium through a print zone of the apparatus in a first direction;
- and
- a plurality of rotary members, each rotary member having two end segments, at least one of said plurality of rotary members having one end segment with a cross section smaller than a cross section of the other end segment, and wherein the end segment having the smaller cross section of the rotary member is moved at a velocity which is smaller than the velocity of movement of said medium in said first direction, to generate a second force opposite to the movement direction of the medium.
A method for controlling undulation on media in an inkjet apparatus comprising a print zone, said method comprising:
- moving a medium through the print zone;
- and
- restraining the movement through the print zone of a first portion of the medium by actuating a rotary member which applies on the first portion of the medium a force which is opposite to the movement of the medium, said steps of moving and restraining being performed substantially at the same time.
Dependencies are inferred from the claim text.