Printing up to edges of printing paper without platen soiling

Details Printing up to edges of printing paper without platen soiling Printing up to edges of printing paper without platen soiling

2010-10-26

2011-12-06

Nguyen, Lam S (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C347S016000, C347S104000

Reexamination Certificate

active

08070246

ABSTRACT:
This invention allows images to be printed up to the edges of printing paper while preventing ink droplets from depositing on the platen. Ink droplets Ip are ejected from a print head28and printing is started when printing paper P is fed in the sub-scanning direction by upstream paper feed rollers25aand25b, and the front edge Pf reaches a position above a downstream slot26r. Since printing is started when the front edge Pf of printing paper P has reached a position behind nozzle No.1, images can be printed without forming blank spaces up to the front edge Pf of the printing paper P by causing the nozzles to eject ink droplets Ip irrespective of whether the nozzles are above the printing paper. When images are formed in the vicinity of the front edge Pf of printing paper P, the paper is repeatedly fed in small increments in the sub-scanning direction, and printing is carried out. Adopting this arrangement makes it possible to print images on the front-edge portion of the printing paper when the paper is above the downstream slot26r.

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European Search Report from EP Application 10185186.3, dated Nov. 23, 2010.

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