PRINTING APPARATUS AND METHOD FOR CONVEYING SHEET
First Claim
1. A printing apparatus comprising:
- a conveying unit for conveying a sheet through a conveying path;
a printing unit located downstream of the conveying unit for printing onto the sheet;
a sheet discharging unit located downstream of the printing unit for discharging the sheet from the conveying path to a sheet discharging position;
a sheet feeding unit located upstream of the conveying unit for feeding the sheet to the conveying path;
a driving unit for driving the conveying unit, the sheet discharging unit, and the sheet feeding unit; and
a control unit for controlling the driving unit so that a first sheet and a second sheet fed subsequently to the first sheet are conveyed at a first conveying speed after a leading end of the first sheet is placed at a sheet feeding control position set upstream of a printing start position where the printing unit starts printing and before a trailing end of the first sheet is placed at a sheet discharging standby position where the first sheet can be discharged from the sheet discharging unit to the sheet discharging position at a predetermined sheet discharging speed, and then the first sheet and the second sheet are conveyed at a second conveying speed higher than the first conveying speed after the trailing end of the first sheet is positioned at the sheet discharging standby position and before the first sheet is discharged, and a leading end of the second sheet is placed at the sheet feeding control position.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provide a printing apparatus and a method for conveying a sheet wherein generation of noise is minimized using a simple configuration, wherein, during sheet discharging, a sheet is discharged at a speed suitable for the sheet discharging, and wherein the sheet is aligned at a sheet discharging position. The printing apparatus controls conveyance of sheets as follows. A first sheet and a second sheet fed subsequently to the first sheet are conveyed at a relatively low conveying speed until an upstream trailing end of the first sheet is placed at a sheet discharging standby position. Then, the first sheet is discharged to the sheet discharging position, and the first sheet and the second sheet are conveyed at a relatively low conveying speed until a downstream leading end of the second sheet is placed at a sheet feeding control position.
-
Citations
5 Claims
-
1. A printing apparatus comprising:
-
a conveying unit for conveying a sheet through a conveying path; a printing unit located downstream of the conveying unit for printing onto the sheet; a sheet discharging unit located downstream of the printing unit for discharging the sheet from the conveying path to a sheet discharging position; a sheet feeding unit located upstream of the conveying unit for feeding the sheet to the conveying path; a driving unit for driving the conveying unit, the sheet discharging unit, and the sheet feeding unit; and a control unit for controlling the driving unit so that a first sheet and a second sheet fed subsequently to the first sheet are conveyed at a first conveying speed after a leading end of the first sheet is placed at a sheet feeding control position set upstream of a printing start position where the printing unit starts printing and before a trailing end of the first sheet is placed at a sheet discharging standby position where the first sheet can be discharged from the sheet discharging unit to the sheet discharging position at a predetermined sheet discharging speed, and then the first sheet and the second sheet are conveyed at a second conveying speed higher than the first conveying speed after the trailing end of the first sheet is positioned at the sheet discharging standby position and before the first sheet is discharged, and a leading end of the second sheet is placed at the sheet feeding control position. - View Dependent Claims (2, 3, 4)
-
-
5. A method for conveying a sheet in a printing apparatus including
a conveying unit for conveying the sheet through a conveying path, a sheet discharging unit located downstream of the conveying unit for discharging the sheet from the conveying path to a sheet discharging position, a sheet feeding unit located upstream of the conveying unit for feeding the sheet to the conveying path, a printing unit located between the conveying unit and the sheet discharging unit for printing onto the sheet, and a driving unit for driving the conveying unit, the sheet discharging unit, and the sheet feeding unit, comprising: -
a first conveying step of conveying a first sheet and a second sheet fed subsequently to the first sheet at a first conveying speed after a leading end of the first sheet is placed at a sheet feeding control position set upstream of a printing start position where the printing unit starts printing and before a trailing end of the first sheet is placed at a sheet discharging standby position where the first sheet can be discharged from the sheet discharging unit to the sheet discharging position at a predetermined sheet discharging speed; and a second conveying step of conveying the first sheet and the second sheet at a second conveying speed higher than the first conveying speed after the trailing end of the first sheet is positioned at the sheet discharging standby position and before the first sheet is discharged and a leading end of the second sheet is placed at the sheet feeding control position.
-
Specification