Back to results
US 7,441,857 B2Granted
Image forming apparatus
AssigneeSeiko I Infotech Inc.
InventorTetsuya Murase
Life of this patent
Estimating the term…
Abstract
An image forming apparatus that can perform stable sheet conveying for a medium that has low tear-resistance, easily sticks to something and is difficult to convey. Therefore, sheet conveying means is controlled, so that during a sheet conveying operation for each path, after a sheet has been conveyed, reverse feeding is performed to release sticking, and sheet feeding is thereafter completed.
Claims2
An image forming apparatus, which comprises:
- conveying means, for conveying a sheet;
- sheet suction means, for holding a sheet on a platen through suction;
- a print head for, based on image data, moving in a direction perpendicular to a sheet conveying direction and performing printing on the sheet;
- and control means, for controlling the conveying means and which alternately repeats, for each path, a sheet conveying operation and a printing operation a required number of times to form an image on the sheet, characterized in that:
- when the sheet is to be conveyed in a specific direction a predetermined feeding distance (Lx) during the conveying operation for each path, the control means permits the conveying means to first convey the sheet a predetermined distance (L1) in the specific direction (+X direction), then to convey the sheet a direction (−X), the opposite of the specific direction (+X), a distance (L:
- L=L1+ΔL1) that is obtained by adding a short distance (ΔL1) to the predetermined distance (L1), and to further convey the sheet in the specific direction (+X) a distance (Lx+ΔL1).
3 more elements
Dependencies are inferred from the claim text.