PRINTER

• Main Authors: HIRANO MIKIO, KANZAKI SHOTARO
• Format: Patent
• Language: English; Japanese
• Published: 27.07.2020
• Subjects: CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

To prevent soiling of the rear of a recording sheet in a case of edge-less printing.SOLUTION: A printer comprises: a liquid ejection head that is caused to reciprocally scan between a scanning start position and a scanning return position in a scanning direction perpendicular to a conveying direction of a recording sheet and that ejects liquid toward the recording sheet from at least one nozzle in at least one of a scanning forward path extending towards the scanning return position from the scanning start position and a scanning backward path extending towards the scanning start position from the scanning return position; and a control unit that controls an amount that the liquid is ejected from the nozzle, on the basis of data on an amount of liquid, which is data on an amount of liquid required for each of pixels composing an image. When a leading-end area, in the conveying direction, of the recording sheet is printed in an edge-free print mode, the control unit executes liquid amount decrease control in which the amount that the liquid is ejected is decreased with respect to an amount of liquid, indicated by the data on the amount of liquid, such that the amount that the liquid is ejected decreases toward an end, on the scanning return position side, of the recording sheet in the scanning forward path.SELECTED DRAWING: Figure 1 【課題】縁なし印刷を行う場合において、記録シートの裏汚れを防止する。【解決手段】印刷装置は、記録シートの搬送方向と垂直な走査方向において、走査開始位置及び走査折り返し位置の間で往復して走査され、走査開始位置から走査折り返し位置に向かう走査往路と、走査折り返し位置から走査開始位置に向かう走査復路との少なくともいずれかにおいて、少なくとも１つのノズルより記録シートに向けて液体を吐出する液体吐出ヘッドと、画像を構成する画素毎に必要な液体量に関するデータである液体量データに基づき、ノズルからの液体の吐出量を制御する制御部と、を備える。制御部は、縁なし印刷モードで記録シートの搬送方向の先端領域を印刷するとき、走査往路において、液体の吐出量が、記録シートの走査折り返し位置側の端部に近い程少なくなるように、液体量データが示す液体量に対して液体の吐出量を少なくする液体量減少制御を行う。【選択図】図１