Fluid ejector including a drop size symbol, a method of disposing a drop size symbol in a fluid ejector, and an image forming device including a marking fluid ejector with a drop size symbol

• US 7,669,948 B2
• Filed: 05/01/2008
• Issued: 03/02/2010
• Est. Priority Date: 03/28/2002
• Status: Expired due to Fees

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Torpey, Peter A, Shin, Helen Haekyung
• Primary Examiner(s): JACKSON, JUANITA DIONNE
• Application Number:
  US12/113,458
• Publication Number:
  US 20080297547A1
• Time in Patent Office: 670 Days
• Field of Search: 347/5, 347/9, 347/14, 347/19, 347 56- 59, 347 84- 87
• US Class Current: 347/5
• CPC Class Codes: B41J 2/04506 aiming at correcting manufacturing tolerances
• CPC Class Codes: B41J 2/04508 aiming at correcting other parameters
• CPC Class Codes: B41J 2/04586 controlling heads of a type not covered by groups B41J2/04575 - B41J2/04585, or of an undefined type
• CPC Class Codes: B41J 2202/17 Readable information on the head

Abstract

A fluid ejector includes a drop size symbol that is based on the fluid ejector'"'"'s drop size relative to one or more fixed drop sizes. The drop size symbol is formed by comparing the fluid ejector'"'"'s drop size to the one or more fixed drop sizes. An image forming device includes a marking fluid ejector that includes a drop size symbol based on the marking fluid ejector'"'"'s drop size relative to one or more fixed drop sizes. The image forming device forms an image based on the drop size symbol by determining the drop size symbol and then either selecting a marking fluid look-up table based on the drop size symbol, or forming an image correction factor based on the drop size symbol.

Claims

1. A fluid ejector (100.1) arranged to eject a fluid drop (2), the fluid drop (2) comprising a drop size (2′

), the fluid ejector (100.1) comprising a storage means (20), the storage means (20) having a drop size symbol stored therein, thus forming a stored drop size symbol (3), the stored drop size symbol (3) having a value that is based on comparing (505) the drop size (2′

) to n fixed drop sizes, where n is a positive integer whose value is equal to or greater than 1.

2. The fluid ejector of claim 1 arranged so that an imaging forming device (FIG. 6, reference number 600) including the fluid ejector is thus enabled to form an image on a media (605) by means of the included fluid ejector and based on any of a first method (FIG. 7, reference number 700) and a second method (FIG. 8, reference number 800),

the first method (FIG. 7, reference number 700) comprising the steps of:

(a) (FIG. 7, step 703) determine the stored drop size symbol value;

(b) (FIG. 7, step 705) select at least one marking fluid look-up table based on the stored drop size symbol value, thus forming a selected at least one marking fluid look-up table;

(c) (FIG. 7, step 751) provide an image information;

(d) (FIG. 7, step 755) form a marking fluid information based on the image information and the selected at least one marking fluid look-up table; and

(e) (FIG. 7, step 757) form an image based on the marking fluid information;

where the image forming device (FIG. 6, reference number 600) comprises a plurality of marking fluid look-up tables based on a range of marking fluid drop sizes; and

the second method (FIG. 8, reference number 800) comprising the steps of;

(a) (FIG. 8, step 803) determine the stored drop size symbol value;

(b) (FIG. 8, step 805) form an image correction factor based on the stored drop size symbol value;

(c) (FIG. 8, step 851) provide an image information;

(d) (FIG. 8, step 853) form a modified image information based on the image correction factor and the image information;

(e) (FIG. 8, step 855) form a marking fluid information based on the modified image information; and

(f) (FIG. 8, step 857) form an image based on the marking fluid information.

3. The fluid ejector of claim 1, wherein n equals 1.

4. The fluid ejector of claim 3, the stored drop size symbol having a first value when the drop size exceeds the fixed drop size, otherwise a second value.

5. The fluid ejector of claim 3, the stored drop size symbol having a first value when the drop size does not exceed the fixed drop size, otherwise a second value.

6. The fluid ejector of claim 3, the stored drop size symbol having a first value when the drop size is less than the fixed drop size, a second value when the drop size substantially equals the fixed drop size, otherwise a third value.

7. The fluid ejector of claim 1, the stored drop size symbol forming part of an identification code or serial number.

8. The fluid ejector of claim 1, the fluid comprising a marking fluid.