Printing apparatus and printing method

Patent metadata

Field	Value
Publication number	US-2024269996-A1
Application number	US-202418643538-A
Country	US
Kind code	A1
Filing date	Apr 23, 2024
Priority date	Dec 27, 2019
Publication date	Aug 15, 2024
Grant date	—

Abstract

There is provided a printing apparatus comprises a holding unit configured to hold a roll sheet. The printing apparatus performs: supplying the sheet by rotating the roll sheet held by the holding unit; nipping and conveying the supplied sheet; performing printing on the conveyed sheet; detecting occurrence of a print medium jam of the sheet; and, if the printing apparatus has detected a print medium jam of the sheet, performing a control process of supplying the sheet in a state in which the conveying is stopped.

First claim

What is claimed is:

1 . A printing apparatus comprising:
a holding unit configured to hold a roll sheet; supply unit configured to supply the sheet by rotating the roll sheet held by the holding unit; conveying unit configured to nip and convey the sheet supplied from the supply unit; printing unit configured to perform printing on the sheet conveyed from the conveying unit; detecting unit configured to detect occurrence of a print medium jam of the sheet; and control unit configured to, if the detecting unit has detected a print medium jam of the sheet, perform a control process of supplying the sheet by the supply unit in a state in which the conveying unit is stopped.

2 . The apparatus according to claim 1 , wherein a loop of the sheet is formed between the holding unit and the conveying unit by the control process.

3 . The apparatus according to claim 1 , further comprising acceptance unit configured to accept a user instruction,
wherein if the detecting unit has detected a print medium jam of the sheet and the acceptance unit has accepted a user instruction, the control unit performs the control process.

4 . The apparatus according to claim 3 , further comprising display unit configured to display a screen to select a jam process method.

5 . The apparatus according to claim 1 , further comprising paper edge determination unit configured to determine a position of a leading end of the sheet in a conveying direction,
wherein if the detecting unit has detected a print medium jam of the sheet and the paper edge determination unit determines that the leading end of the sheet in the conveying direction is located at a predetermined position, the control unit performs the control process.

6 . The apparatus according to claim 1 , further comprising cutting unit, arranged downstream of the printing unit in the conveying direction of the sheet, configured to cut the sheet,
wherein if the detecting unit has detected a print medium jam of the sheet and a cutting process performed by the cutting unit is terminated as an error, the control unit performs the control process.

7 . The apparatus according to claim 6 , further comprising a carriage on which the printing unit is mounted, and configured to move in a widthwise direction intersecting the conveying direction of the sheet,
wherein the cutting unit can move in the widthwise direction by being pulled by the carriage.

8 . The apparatus according to claim 7 , wherein if the detecting unit has detected a print medium jam of the sheet and the carriage does not move normally, the control unit performs the control process.

9 . The apparatus according to claim 6 , wherein
the cutting unit includes a cutter and a motor that moves the cutter, and the cutter is moved by the motor in a direction intersecting the conveying direction of the sheet.

10 . The apparatus according to claim 9 , wherein if the detecting unit has detected a print medium jam of the sheet and the cutting unit does not move normally, the control unit performs the control process.

11 . The apparatus according to claim 1 , further comprising a frame provided so as to partially cover a region on a downstream side of the printing unit in the conveying direction of the sheet.

12 . A printing method of a printing apparatus comprising a holding unit configured to hold a roll sheet, comprising:
supplying the sheet by a supply unit by rotating the roll sheet held by the holding unit; conveying the sheet by a conveying unit nipping the sheet supplied from the supply unit; printing, by a printing unit, on the sheet conveyed from the conveying unit; detecting occurrence of a print medium jam of the sheet by a detecting unit; and controlling, if a print medium jam of the sheet has been detected in the detecting, the supply unit so as to supply the sheet by the supply unit in a state in which the conveying unit is stopped.

13 . The method according to claim 12 , wherein a loop of the sheet is formed between the holding unit and the conveying unit by the controlling.

Assignees

• Canon Kk

Inventors

• Suzuki Yoshiaki
• Yoneyama Hiromasa
• Maruyama Ryohei
• Wada Itaru
• Abe Tomohito
• Obata Tsutomu
• Aoki Noriyuki
• Asai Yasuyuki

Classifications

• B65H26/02

  responsive to presence of irregularities in running webs · CPC title

• B41J15/08

  characterised by being applied to printers having transversely- moving carriages · CPC title

• B41J11/706

  using a cutting tool mounted on a reciprocating carrier · CPC title

• B65H7/06

  responsive to presence of faulty articles or incorrect separation or feed (B65H7/14 takes precedence) · CPC title

• B41J11/42

  Controlling {printing material conveyance for accurate alignment of the printing material with the printhead; Print registering} · CPC title