Inkjet Recording Apparatus

• US 20190344591A1
• Filed: 03/15/2019
• Published: 11/14/2019
• Est. Priority Date: 11/28/2011
• Status: Active Grant

• Current Assignee: Brother Kogyo Kabushiki Kaisha
• Original Assignee: Brother Kogyo Kabushiki Kaisha
• Inventors: Ito, Tsuyoshi, Koga, Yuji, Sugiyama, Wataru, Samoto, Kenji
• Granted Patent: US 10,710,384 B2
• Time in Patent Office: Days
• CPC Class Codes: B41J 11/0025 Handling copy materials differing in width
• CPC Class Codes: B41J 11/0045 Guides for printing material curl smoothing B41J11/0005; platens B41J11/02, B41J11/06; guiding webs B41J15/046
• CPC Class Codes: B41J 11/006 Means for preventing paper jams or for facilitating their removal
• CPC Class Codes: B41J 11/007 Conveyor belts or like feeding devices
• CPC Class Codes: B41J 11/06 Flat page-size platens or smaller flat platens having a greater size than line-size platens B41J11/0085 takes precedence
• CPC Class Codes: B41J 11/14 Platen-shift mechanisms; Driving gear therefor
• CPC Class Codes: B41J 2/01 Ink jet
• CPC Class Codes: B65H 5/068 between one or more rollers or balls and stationary pressing, supporting or guiding elements
• CPC Class Codes: B65H 9/002 changing orientation of sheet by only controlling movement of the forwarding means, i.e. without the use of stop or register wall

Abstract

An image forming apparatus may include a mechanism for forming a corrugated shape in a sheet to be conveyed. The mechanism may include various components include one or more pressing portions, one or more ribs, one or more discharge rollers, a switching mechanism and the like. In one arrangement, ribs and pressing portions configured to create the corrugated shape may be disposed at various locations upstream or downstream of the platen, recording portion and/or nozzles thereof. In one example, pressing portions may be disposed both upstream and downstream of the nozzles of the recording portion to maintain a corrugated shape in the conveyed sheet. Various other configurations may be used.

Claims

1. An inkjet recording apparatus, comprising:

a first roller pair defining a first nip point therebetween and configured to convey a sheet in a conveying direction;

a recording head including nozzle configured to eject ink droplets, wherein the nozzle of the recording head is located downstream of the first nip point with respect to the conveying direction;

a second roller pair defining a second nip point therebetween and configured to convey the sheet, wherein the second nip point is located downstream of the nozzle of the recording head with respect to the conveying direction;

a first contact portion having a first contact point, in an up-down direction, configured to contact the sheet and form a corrugated shape in the sheet, wherein the first contact point of the first contact portion is located between the first nip point and the nozzle of the recording head with respect to the conveying direction; and

a second contact portion having a second contact point, in the up-down direction, configured to form the corrugated shape in the sheet, wherein the second contact point of the second contact portion is located downstream of the second nip point with respect to the conveying direction,

wherein a distance along the conveying direction between the second nip point and the second contact point of the second contact portion is shorter than a distance along the conveying direction between the first nip point and the first contact point of the first contact portion with respect to the conveying direction.