JP2000355158A5

JP2000355158A5 -

Info

Publication number: JP2000355158A5
Application number: JP2000112659A
Authority: JP
Filing date: 2000-04-13
Publication date: 2004-09-09

Description

【００５９】
（実施例）
以下、本発明を実施例により詳細に説明するが、本発明の範囲を以下の実施例に限定するものではない。
（実施例１）
室内の温度２０℃、湿度４０％の環境下において、以下のように画像印刷を行った。
記録媒体（シート）として、写真用のＲＣペーパー（レジンコート紙）約210g／m²の表面にインク受容層を形成した記録シートにインクジェットプリンタＰＭ７７０Ｃ（セイコーエプソン（株）製）を用い、解像度720×720dpiで、Ｙ、Ｍ、Ｃインクの最大打ち込み量が8mg／inch²（解像度720×720dpi）である。そして、黒色インクの最大インク打ち込み量に対する割合（％Duty）を以下No.１〜No.１０のように変えて画像印刷を行った。
No.１：１０％Duty
No.２：２０％Duty
No.３：３０％Duty
No.４：４０％Duty
No.５：５０％Duty
No.６：６０％Duty
No.７：７０％Duty
No.８：８０％Duty
No.９：９０％Duty
No.１０：１００％Duty[0059]
(Example)
Hereinafter, the present invention will be described in detail by way of examples, but the scope of the present invention is not limited to the following examples.
Example 1
Image printing was performed as follows in an environment with a room temperature of 20 ° C. and a humidity of 40%.
As a recording medium (sheet), an inkjet printer PM770C (manufactured by Seiko Epson Corp.) is used as a recording sheet in which an ink receiving layer is formed on a surface of about 210 g / m ² of RC paper for photography (resin coated paper). The maximum ejection amount of Y, M, and C inks is 8 mg / inch ² (resolution: 720 × 720 dpi) at × 720 dpi. Then, the ratio (% Duty) of the black ink to the maximum ink impact amount was changed as in the following No. 1 to No. 10 to perform image printing.
No. 1: 10% Duty
No. 2: 20% Duty
No.3: 30% Duty
No. 4: 40% Duty
No. 5: 50% Duty
No. 6: 60% Duty
No.7: 70% Duty
No. 8: 80% Duty
No. 9: 90% Duty
No. 10: 100% Duty

Claims

A recording method of forming an image by discharging ink droplets to a recording medium having an ink receiving layer mainly composed of at least a hydrophilic polymer, wherein the maximum ink injection amount of black ink is the maximum ink injection amount of color ink An ink jet recording method characterized by controlling so as to be less than the above.

2. The ink jet recording method according to claim 1, further comprising: controlling a black ink discharge interval (recording dot arrangement).

The ink jet recording method according to claim 1 or 2, wherein the maximum impact amount of the black ink is controlled to 20% or less.

The ink jet recording method according to any one of claims 1 to 3, wherein the dye concentration (content) of the black ink is 5% by weight or less.

The ink jet recording method according to any one of claims 1 to 4, wherein the hydrophilic polymer is gelatin.

The ink jet recording method according to any one of claims 1 to 5, wherein the ink receiving layer contains a metal salt.

The ink jet recording method according to claim 6, wherein the metal salt is lanthanum.

The ink jet recording method according to any one of claims 1 to 8, wherein the recording resolution is 720 dpi x 720 dpi or more.

In a recording apparatus which ejects ink droplets to form an image on a recording medium having at least an ink receiving layer mainly composed of a hydrophilic polymer, the maximum impact amount of black ink is smaller than the maximum impact amount of color ink An ink jet recording apparatus, which is configured to:

10. The ink jet recording apparatus according to claim 9, wherein the maximum amount of black ink ejected is controlled in accordance with the type of recording medium.

The ink jet recording apparatus according to claim 9 or 10, wherein the maximum impact amount of the black ink is controlled to be 20% or less.

The ink jet recording apparatus according to claim 9 or 10, which is configured to set the maximum ink loading amount of the black ink to 5 mg / inch ² or less when a specific recording medium is selected. Recorder.

The ink jet recording apparatus according to any one of claims 10 to 12, wherein the recording resolution is 720 dpi x 720 dpi or more.