Apparatus and method for precision application and metering of a two-part (binary) imaging solution in an ink jet printer

• US 8,356,873 B2
• Filed: 05/24/2012
• Issued: 01/22/2013
• Est. Priority Date: 04/08/2009
• Status: Expired due to Fees

• Current Assignee: Novus Printing Equipment LLC
• Original Assignee: Redwood Technologies, LLC (Dominion Harbor Enterprises, LLC)
• Inventors: Mills, Michael D.
• Primary Examiner(s): DO, AN H
• Application Number:
  US13/480,159
• Publication Number:
  US 20120229540A1
• Time in Patent Office: 243 Days
• Field of Search: 347/7, 347/14, 347/15, 347/21, 347/95, 347/96
• US Class Current: 347/14
• CPC Class Codes: B41J 2/211 Mixing of inks, solvent or air prior to paper contact
• CPC Class Codes: B41J 2/2128 by means of energy modulation control methods or devices therefor, e.g. driver circuits or control circuits B41J2/04501

Abstract

A multi-color ink jet printing system uses a two-part (Binary) imaging solution, where the precise mixture of the multiple fluid parts (Colorant(s) and Reactant) is controlled with the use of multiple drop size (Grey Scale) ink jet print heads. The precise mixture of colorant(s) and reactant initiates a chemical reaction, which cures the imaging solution into a solid or nearly solid compound that ensures proper drop location.

Claims

1. A method for applying a binary imaging solution to a print media, comprising the steps of:

determining with a processor a sum total volume of colorant that is to be applied to a pixel location on the print media by all of a plurality of colorant channels of at least one print head;

multiplying with said processor said sum total volume by a mixture ratio to determine a proper volume of reactant to be applied to the same pixel location; and

if the sum total volume of reactant is larger than a volume that can be applied by a single channel of reactant, or if a better granularity of a mixture ratio can be achieved by distributing the volume of reactant to different drop sizes across multiple channels, then distributing the volume of reactant accordingly.

2. The method of claim 1, wherein said mixture ratio is determined by chemical properties of a binary printing solution that comprises said colorant and said reactant.

3. The method of claim 2, further comprising the step of:

configuring said processor wherein if all reactant channels are configured with print heads of a same drop volume, then the volume of reactant needed for the pixel location is divided by a total number of reactant fluid channels, resulting in a volume of reactant to be deposited by each reactant channel.

4. An apparatus for applying a binary imaging solution to a print media, comprising:

a processor configured for determining a sum total volume of colorant that is to be applied to a pixel location on the print media by all of a plurality of colorant channels of at least one print head;

said processor configured for multiplying said sum total volume by a mixture ratio to determine a proper volume of reactant to be applied to the same pixel location; and

if the sum total volume of reactant is larger than a volume that can be applied by a single channel of reactant, or if a better granularity of a mixture ratio can be achieved by distributing the volume of reactant to different drop sizes across multiple channels, then said processor configured for distributing the volume of reactant accordingly.

5. The apparatus of claim 4, wherein said mixture ratio is determined by chemical properties of a binary printing solution that comprises said colorant and said reactant.

6. The apparatus of claim 5, further comprising:

said processor configured wherein if all reactant channels are configured with print heads of a same drop volume, then the volume of reactant needed for the pixel location is divided by a total number of reactant fluid channels, resulting in a volume of reactant to be deposited by each reactant channel.