Invention Grant
- Patent Title: Black and white paper with variable gradation
- Patent Title (中): 具有可变灰度的黑白纸
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Application No.: US681270Application Date: 1996-07-22
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Publication No.: US5665532APublication Date: 1997-09-09
- Inventor: Manfred Peters , Thomas Kaluschke , Hans Ohlschlager , Bruno Mucke
- Applicant: Manfred Peters , Thomas Kaluschke , Hans Ohlschlager , Bruno Mucke
- Applicant Address: DEX
- Assignee: Agfa-Gevaert AG
- Current Assignee: Agfa-Gevaert AG
- Current Assignee Address: DEX
- Priority: DEX19528057.1 19950731; DEX19601141.8 19960115
- Main IPC: G03C1/035
- IPC: G03C1/035 ; G03C1/14 ; G03C1/16 ; G03C1/18 ; G03C1/29
Abstract:
A black & white paper with variable gradation containing a silver chloride-bromide emulsion, which is divided into at least three portions, one of which is sensitised with a blue sensitiser and two further portions are sensitised both with differing quantities of blue sensitiser and with differing quantities of a green sensitiser, wherein the blue sensitiser is of the formula (I) and the green sensitiser is of the formula (II) ##STR1## in which R.sub.1 to R.sub.8, X.sup.(-) and m have the meaning stated in the specification, is distinguished by an extended gradation range.
Public/Granted literature
- US5220491A High packing density module board and electronic device having such module board Public/Granted day:1993-06-15
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