PRINTING DEVICE CONTROLLING CONVEYANCE AMOUNT OF SHEET

摘要

A printing device executes processes (a)-(c). In the process (a), first and second rollers convey a sheet a first amount, and a print head executes a printing operation while the sheet is in a state where the sheet is supported by the first and second rollers and a supporting unit disposed between the first and second rollers. In the process (b), the second roller conveys the sheet a second amount that is no larger than the first amount, and the print head executes a printing operation while the sheet is in a state where the sheet is supported by the supporting unit and the second roller. In the process (c), the second roller conveys the sheet a third amount that is larger than the first amount, and the print head executes a printing operation while the sheet is in a state where the sheet is supported by the second roller.

主权项

1. A printing device comprising:
a print head; a conveying mechanism configured to convey a sheet in a conveying direction, the sheet having one surface and another surface opposite to the one surface, the conveying mechanism including: a first roller disposed upstream of the print head in the conveying direction; a second roller disposed downstream of the print head in the conveying direction; a supporting unit disposed between the first roller and the second roller and closer to the first roller than the second roller and configured to support the sheet, the supporting unit including:
a first contacting unit configured to contact the one surface of the sheet; anda second contacting unit configured to contact the another surface of the sheet; and a control device configured to control the print head and the conveying mechanism to: execute a process (a) in which:
at least one of the first roller and the second roller is driven to convey the sheet a first conveyance amount; andthe print head is driven to execute a printing operation while the sheet is in a first state where the sheet is supported by the first roller, the supporting unit, and the second roller; execute, after the process (a) is executed at least one time, a process (b) in which:
at least the second roller is driven to convey the sheet a second conveyance amount that is less than or equal to the first conveyance amount; andthe print head is driven to execute a printing operation while the sheet is in a second state where the sheet is not supported by the first roller and where the sheet is supported by the supporting unit and the second roller; and execute, after the process (b) is executed at least one time, a process (c) in which:
at least the second roller is driven to convey the sheet a third conveyance amount that is larger than the first conveyance amount; andthe print head is driven to execute a printing operation while the sheet is in a third state where the sheet is not supported by either of the first roller or the supporting unit and where the sheet is supported by the second roller.