Printing apparatus including an application unit that applies an amount of wiping liquid based on an adhesion amount of ink

Patent metadata

Field	Value
Publication number	US-12583226-B2
Application number	US-202318535252-A
Country	US
Kind code	B2
Filing date	Dec 11, 2023
Priority date	Dec 16, 2022
Publication date	Mar 24, 2026
Grant date	Mar 24, 2026

Abstract

A printing apparatus includes a printing unit with an ejection port surface, on which is formed an ejection port array with a plurality of ejection ports that ejects ink, a wiping unit with a wiping member for wiping a predetermined area including the ejection port array, and to wipe the predetermined area by relative movement with the printing unit, an application unit to apply a wiping liquid for re-dispersing the ink, and a control unit to control the application unit to apply the wiping liquid to a wiping area, according to an amount of ink adhering to the wiping member. The application unit applies a first amount of the wiping liquid to the wiping area when the adhesion amount is a first amount, and applies a second amount, less than the first, to the wiping area when the adhesion amount is a second adhesion amount, less than the first.

First claim

The invention claimed is:

1 . A printing apparatus comprising:
a printing unit configured with an ejection port surface, on which an ejection port array with a plurality of ejection ports that ejects ink being arranged in an array, is formed; a wiping unit configured with a wiping member for wiping a predetermined area including the ejection port array of the ejection port surface, and configured to wipe the predetermined area by relative movement with the printing unit; an application unit configured to apply a wiping liquid for re-dispersing the ink; and a control unit configured to control the application unit to apply the wiping liquid to a wiping area that wipes the predetermined area, according to an adhesion amount of ink adhering to the wiping member, wherein the control unit controls the application unit to apply a first amount of the wiping liquid to the wiping area in a case when the adhesion amount is a first adhesion amount, and to apply a second amount, less than the first amount, of the wiping liquid to the wiping area in a case when the adhesion amount is a second adhesion amount, which is less than the first adhesion amount.

2 . The printing apparatus according to claim 1 , wherein the wiping unit includes a change unit configured to change the wiping area.

3 . The printing apparatus according to claim 2 , wherein the control unit controls the change unit to change the wiping area in a case when the adhesion amount is a first amount, and not to change the wiping area in a case where the adhesion amount is a second amount, which is less than the first amount.

4 . The printing apparatus according to claim 2 , wherein the change unit changes the wiping area so that a part of the wiping member that has been positioned in the wiping area before the changing is positioned within the wiping area after the changing.

5 . The printing apparatus according to claim 2 , wherein, in a case when the adhesion amount is a first adhesion amount, the change unit changes the wiping area by a larger amount compared to a case where the adhesion amount is a second adhesion amount, which is less than the first adhesion amount.

6 . The printing apparatus according to claim 2 , wherein the change unit changes the wiping area by winding up the wiping member.

7 . The printing apparatus according to claim 1 , wherein, in the printing unit, a plurality of the ejection port arrays respectively corresponding to a plurality of types of the ink is formed on the ejection port surface, and
wherein the control unit controls the application unit to apply the wiping liquid to the wiping area, according to the adhesion amount of a predetermined ink among the plurality of types of the ink.

8 . The printing apparatus according to claim 7 , wherein the predetermined ink is an ink containing a material that decreases water repellency of the predetermined area.

9 . The printing apparatus according to claim 7 , wherein the predetermined ink is black ink containing carbon black as a coloring material, white ink containing titanium oxide as a coloring material, or gray ink containing carbon black and titanium oxide as coloring materials.

10 . The printing apparatus according to claim 7 , wherein the wiping member includes a first wiping member that wipes an area including the ejection port array of the predetermined ink, and a second wiping member that wipes the ejection port array of an ink other than the predetermined ink among the plurality of types of the ink.

11 . The printing apparatus according to claim 1 , wherein, in the printing unit, a plurality of the ejection port arrays respectively corresponding to a plurality of types of the ink is formed on the ejection port surface, and
wherein the control unit controls the application unit to apply the wiping liquid to the wiping area, according to the adhesion amounts of a plurality of inks including a predetermined ink among the plurality of types of the ink.

12 . The printing apparatus according to claim 1 , wherein, in a case when the adhesion amount is a first adhesion amount, the control unit applies the wiping liquid with a greater application amount compared to a case when the adhesion amount is a second adhesion amount, which is less than the first adhesion amount.

13 . A printing apparatus comprising:
a printing unit configured with an ejection port surface, on which an ejection port array with a plurality of ejection ports that ejects ink being arranged in an array, is formed; a wiping unit configured with a wiping member for wiping a predetermined area including the ejection port array of the ejection port surface, and configured to wipe the predetermined area by relative movement with the printing unit; an application unit configured to apply a wiping liquid for re-dispersing the ink; and a control unit configured to control the application unit to apply the wiping liquid to wiping area that wipes the predetermined area, according to an adhesion amount of ink adhering to an area including the ejection port array and a vicinity of the ejection port array, wherein the control unit controls the application unit to apply a first amount of the wiping liquid to the wiping area in a case when the adhesion amount is a first adhesion amount, and to apply a second amount, less than the first amount, of the wiping liquid to the wiping area in a case when the adhesion amount is a second adhesion amount, which is less than the first adhesion amount.

14 . A printing apparatus comprising:
a printing unit configured with an ejection port surface, on which an ejection port array with a plurality of ejection ports that ejects ink being arranged in an array, is formed, wherein, a plurality of the ejection port arrays respectively corresponding to a plurality of types of the ink is formed on the ejection port surface; a wiping unit configured with a wiping member for wiping a predetermined area including the ejection port array of the ejection port surface, and configured to wipe the predetermined area by relative movement with the printing unit; an application unit configured to apply a wiping liquid for re-dispersing the ink; and a control unit configured to control the application unit to apply the wiping liquid to wiping area that wipes the predetermined area, according to a duty or the number of times of ejections based on print data for the ink, wherein the control unit controls the application unit to apply a first amount of the wiping liquid to the wiping area in a case when the adhesion amount is a first adhesion amount, and to apply a second amount, less than the first amount, of the wiping liquid to the wiping area in a case when the adhesion amount is a second adhesion amount, which is less than the first adhesion amount.

15 . A printing apparatus comprising:
a printing unit configured with an ejection port surface, on which an ejection port array with a plurality of ejection ports that ejects ink being arranged in an array, is formed; a wiping unit configured with a wiping member for wiping a predetermined area including the ejection port array of the ejection port surface, and configured to wipe the predetermined area by relative movement with the printing unit; an application unit configured to apply a wiping liquid for re-dispersing the ink; and a control unit configured to control the application unit to apply the wiping liquid to a wiping area that wipes the predetermined area, according to an adhesion amount of ink adhering to the wiping member, wherein the control unit controls the application unit to apply the wiping liquid to the wiping area, a

Assignees

• Canon Kk

Inventors

• Takekoshi Rie
• Danzuka Toshimitsu
• Tomida Akihiro
• Ishimi Keita
• Aichi Akiko
• Kango Hiroto

Classifications

• B41J29/17

  Cleaning arrangements · CPC title

• B41J2002/16558

  Using cleaning liquid for wet wiping · CPC title

• B41P2235/20

  Wiping devices · CPC title

• B41J2/16538

  with brushes or wiper blades perpendicular to the nozzle plate · CPC title

• B41J2/16535

  using wiping constructions (B41J2/16552 takes precedence) · CPC title