WO2003031453-A1  See also references of EP 1431300A1EP1431300-A1  DATABASE CA [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; HANYU, TAKESHI ET AL: "Silver halide photographic material giving high-quality dot with high contrast" XP002358659 retrieved from STN Database accession no. 113:106294 & JP 02 037340 A2 (KONICA CO., JAPAN) 7 February 1990 (1990-02-07);  DATABASE CA [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; KINOSHITA, TAKEHISA ET AL: "Silver halide photographic material containing a triphenyltetrazolium and an oxyborane to improve dot quality and enhance image contrast" XP002358658 retrieved from STN Database accession no. 113:162446 & JP 02 002543 A2 (KONICA CO., JAPAN) 8 January 1990 (1990-01-08);  DATABASE CA [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; SATO, NAOKI ET AL: "Water-thinned inks for ball-point pens" XP002358657 retrieved from STN Database accession no. 115:210439 & JP 03 119072 A2 (PENTEL CO., LTD., JAPAN) 21 May 1991 (1991-05-21);  See also references of WO 03031453A1;  DATABASE CA [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; SATO, NAOKI ET AL: "Water-thinned inks for ball-point pens" XP002358657 retrieved from STN Database accession no. 115:210439&JP 03 119072 A2 (PENTEL CO., LTD., JAPAN) 21 May 1991 (1991-05-21);  DATABASE CA [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; KINOSHITA, TAKEHISA ET AL: "Silver halide photographic material containing a triphenyltetrazolium and an oxyborane to improve dot quality and enhance image contrast" XP002358658 retrieved from STN Database accession no. 113:162446&JP 02 002543 A2 (KONICA CO., JAPAN) 8 January 1990 (1990-01-08);  DATABASE CA [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; HANYU, TAKESHI ET AL: "Silver halide photographic material giving high-quality dot with high contrast" XP002358659 retrieved from STN Database accession no. 113:106294&JP 02 037340 A2 (KONICA CO., JAPAN) 7 February 1990 (1990-02-07)US6998465-B2  International Search Report mailed Feb. 4, 2003, for No. PCT/JP02/10049.EP1431300-B1  DATABASE CA [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; HANYU, TAKESHI ET AL: "Silver halide photographic material giving high-quality dot with high contrast" XP002358659 retrieved from STN Database accession no. 113:106294 & JP 02 037340 A2 (KONICA CO., JAPAN) 7 February 1990 (1990-02-07);  DATABASE CA [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; KINOSHITA, TAKEHISA ET AL: "Silver halide photographic material containing a triphenyltetrazolium and an oxyborane to improve dot quality and enhance image contrast" XP002358658 retrieved from STN Database accession no. 113:162446 & JP 02 002543 A2 (KONICA CO., JAPAN) 8 January 1990 (1990-01-08);  DATABASE CA [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; SATO, NAOKI ET AL: "Water-thinned inks for ball-point pens" XP002358657 retrieved from STN Database accession no. 115:210439 & JP 03 119072 A2 (PENTEL CO., LTD., JAPAN) 21 May 1991 (1991-05-21)