1. A method of compensating for printing quality of an image forming apparatus which includes a plurality of developers to print color images, the method comprising:
calculating a toner stress index representing a deteriorated degree of a toner remaining in each of the plurality of developers;
determining one of a first pattern which is a default pattern used in at least one of an auto color registration (ACR) operation and an image density (ID) control operation and a second pattern which is obtained by changing the first pattern according to the calculated toner stress index before performing the ACR operation and the ID control operation;
when the second pattern is determined, determining a property of the second pattern according to the calculated toner stress index; and
printing the determined pattern with the remaining toner.
2. The method of claim 1, further comprising:
performing at least one of the ACR operation and the ID control operation with the printed pattern.
3. The method of claim 1, wherein the printing comprises:
printing the second pattern with the remaining toner after adjusting the property of the second pattern according to a consumption amount of the toner corresponding to the toner stress index.
4. The method of claim 1, wherein the calculating the toner stress index comprises:
calculating the toner stress index according to at least one of an average dot count of the image forming apparatus and the number of revolutions of a developing roller in each of the developers per one printing page.
5. The method of claim 1, wherein the determining of the pattern comprises:
determining a consumption amount of the remaining toner corresponding to the calculated toner stress index;
comparing the determined consumption amount with a threshold value of the toner amount in printing the first pattern; and
determining the pattern according to the comparison result.
6. The method of claim 5, wherein the determining of the pattern determines the pattern as the first pattern when the determined consumption amount is smaller than a threshold value.
7. The method of claim 5, wherein the determining of the pattern comprises:
determining the pattern as the second pattern when the determined consumption amount is greater than the threshold value, the determining of the property comprises determining the property of the second pattern so as to use the remaining toner as much as the determined consumption amount, and the printing the pattern comprises printing the second pattern having the determined property by using the remaining toner.
8. The method of claim 7, wherein when the determined consumption amount is greater than a toner amount used to print the second pattern, the printing of the pattern further uses the remaining toner as much as the exceeding amount.
9. The method of claim 1, wherein the property of the second pattern is at least one of the number of patterns, a width of the pattern in a main scanning direction, and a width of the pattern in a sub-scanning direction.
10. The method of claim 1, wherein the second pattern is obtained by increasing at least one of the number of the first patterns, a width of the first pattern in the main scanning direction, and a width of the pattern in a sub-scanning direction according to the toner stress index.
11. The method of claim 1, further comprising:
receiving a command to perform one of the ACR operation and the ID control operation,
wherein the determining of the pattern determines one of the first pattern and the second pattern when the command is received by the image forming apparatus.
12. The method of claim 1, further comprising:
displaying at least one of the toner stress index, the toner consumption amount corresponding to the toner stress index, the property of the second pattern, the result of the ACR operation, and the result of the ID control operation.
13. An image forming apparatus compensating for printing quality, the image forming apparatus comprising:
a developing unit including a plurality of developers to print color images;
a calculator to calculate a toner stress index which represents a deteriorated degree of a toner remaining in each of the developers;
a pattern determiner to determine one of a first pattern which is a default pattern used in at least one of an auto color registration (ACR) operation and an image density (ID) control operation and a second pattern which is obtained by changing the first pattern according to the calculated toner stress index before performing the ACR operation and the ID control operation;
a property determiner to determine a property of the second pattern according to the calculated toner stress index when the second pattern is determined;
a storage unit to store information including the calculated toner stress index and a toner consumption amount corresponding to the toner stress index; and
a controller to control the image forming apparatus to print the determined pattern with the remaining toner.
14. The image forming apparatus of claim 13, wherein the controller controls the image forming apparatus to perform one of the ACR operation and the ID control operation by using the printed pattern.
15. The image forming apparatus of claim 13, wherein the image forming apparatus prints the second pattern with the remaining toner after adjusting the property of the second pattern according to the toner consumption amount corresponding to the toner stress index.
16. The image forming apparatus of claim 13, wherein the storage unit stores information about one of an average dot count of the image forming apparatus and a number of revolutions of a developing roller for each developer, and the toner stress index is calculated according to at least one of the average dot count and the number of revolutions of the developing roller.
17. The image forming apparatus of claim 13, wherein the pattern determiner comprises:
a consumption amount determiner to determine the consumption amount of the remaining toner corresponding to the calculated toner stress index; and
a comparator to compare the determined consumption amount with a threshold value of the toner amount which is used to print the first pattern to determine one of the first and second patterns according to the comparing result.
18. The image forming apparatus of claim 17, wherein the pattern determiner determines the pattern as the first pattern if the determined consumption amount is less than the threshold value.
19. The image forming apparatus of claim 17, wherein the pattern determiner determines the pattern as the second pattern when the determined consumption amount is greater than the threshold value, the property determiner determines the property of the second pattern so as to use the remaining toner as much as the determined consumption amount, and the controller controls the image forming apparatus to print the second pattern having the determined property with the remaining toner.
20. The image forming apparatus of claim 13, wherein the property of the second pattern is at least one of the number of patterns, a width of the pattern in a main scanning direction, and a width of the pattern in a sub-scanning direction.
21. The image forming apparatus of claim 13, wherein the second pattern is obtained by increasing at least one of the number of the first patterns, a width of the first pattern in a main scanning direction, and a width of the pattern in a sub-scanning direction according to the toner stress index.
22. The image forming apparatus of claim 13, further comprising an input unit for receiving a command to perform one of the ACR operation and the ID control operation, wherein
the pattern determiner determines one of the first and second patterns when the command is input in the image forming apparatus.
23. The image forming apparatus of claim 13, further comprising:
a display unit to display at least one of the toner stress index, the toner consumption amount corresponding to the toner stress index, the property of the second pattern, the result of the ACR operation, and the result of the ID control operation.
24. A method of compensating for printing quality of an image forming apparatus which includes a plurality of developers to print color images, the method comprising:
determining the amount of deterioration of toner in each of the plurality of developers with a processor of the image forming apparatus;
determining the consumable amount of toner remaining according to the determined amount of deterioration of the toner with the processor; and
when the determined consumable amount is greater than a toner amount to print a predetermined pattern, modifying the predetermined pattern with the processor so as to use the determined consumable amount of toner remaining in a print operation with the image forming apparatus.
25. The method of claim 24, further comprising:
printing the modified pattern with an image forming unit of the image forming apparatus;
detecting the printed modified pattern with a pattern detector in the image forming apparatus; and
performing at least one of an auto color registration (ACR) and image density control on the detected modified pattern.
26. The method of claim 24, further comprising:
when the determined consumable amount is less than a toner amount to print a predetermined pattern, printing the predetermined pattern with the image forming apparatus.
27. The method of claim 26, further comprising:
detecting the printed modified pattern with a pattern detector in the image forming apparatus; and
performing at least one of an auto color registration (ACR) and image density control on the detected modified pattern.
28. An image forming apparatus compensating for printing quality, the image forming apparatus comprising:
a plurality of developers;
a processor to determine the amount of deterioration of toner in each of a plurality of developers and to determining the consumable amount of toner remaining according to the determined amount of deterioration of the toner with the processor,
wherein when the determined consumable amount is greater than a toner amount to print a predetermined pattern, the processor modifies the predetermined pattern so as to use the determined consumable amount of toner remaining in a print operation with the image forming apparatus.
29. The image forming apparatus of claim 28, further comprising:
a pattern detector to detect the modified pattern that is printed by the image forming apparatus,
wherein the processor performs at least one of an auto color registration (ACR) and image density control on the detected modified pattern.
30. The image forming apparatus of claim 28, wherein when the determined consumable amount is less than a toner amount to print a predetermined pattern, the predetermined pattern is printed with an image forming unit of the image forming apparatus.
31. The image forming apparatus of claim 30, further comprising:
a pattern detector to detect the printed modified pattern, wherein
the processor performs at least one of an auto color registration (ACR) and image density control on the detected modified pattern.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A surgical table for supporting a patient and an object, comprising:
a base;
a patient support surface supported from said base; and
a tray including a work surface, a first hinge member coupled with said patient support surface, a second hinge member coupled with said work surface, and a hinge pin journaled with said first hinge member and said second hinge member to define an axis of rotation about which said second hinge member and said work surface are rotatable relative to said first hinge member and said patient support surface, said hinge pin being moveable relative to said first hinge member and said second hinge member between an unlatched position in which said second hinge member and said work surface are angularly rotatable about an axis of rotation generally parallel to the longitudinal axis and a latched position in which said second hinge member and said work surface are locked against rotation relative to said axis of rotation, said work surface adapted to receive and support the object when said hinge pin is in said latched position.
2. The surgical table of claim 1 wherein said tray includes a spring mechanism for spring biasing said hinge pin relative to said first and said second hinge members and toward said latched position.
3. The surgical table of claim 2 wherein said hinge pin includes a locking projection extending radially outwardly therefrom and one of said first and said second hinge members includes a side wall having a recess configured and dimensioned to engage said locking projection in said latched position and to disengage said locking projection in said unlatched position.
4. The surgical table of claim 3 wherein said spring mechanism further includes a stop for limiting a range of movement of said hinge pin within said first and said second hinge members substantially parallel to the axis of rotation.
5. The surgical table of claim 4 wherein said stop comprises a guide projection extending radially outward from said hinge pin and a slot on one of said first and said second hinge members, said stop movable within said slot.
6. The surgical table of claim 5 wherein said slot is oriented along said axis of rotation, and said hinge pin is movable substantially parallel to said axis of rotation between the latched position and the unlatched position.
7. The surgical table of claim 2 wherein said spring mechanism spring biases said hinge pin along said axis of rotation, and said hinge pin is movable substantially parallel to said axis of rotation between the latched position and the unlatched position.
8. The surgical table of claim 1 wherein said work surface includes a beveled rim and a recessed central portion surrounded by said beveled rim.
9. The surgical table of claim 1 wherein said patient support surface includes a head section to which said first hinge member is attached, a torso section adjacent to said head section, and a longitudinal axis substantially parallel to said axis of rotation, said torso section adapted to support the torso of the patient and tapered from a greater transverse width to a lesser transverse width in a direction generally parallel to the longitudinal axis and directed from said torso section to said head section.
10. The surgical table of claim 1 wherein said hinge pin is moveable substantially parallel to said axis of rotation between the latched position and the latched position.
11. A tray for supporting an object proximate to a surgical table, comprising:
a work surface;
a first hinge member adapted to be coupled with the surgical table;
a second hinge member coupled with said work surface; and
a hinge pin journaled with said first hinge member and said second hinge member to define an axis of rotation, said hinge pin being moveable relative to said first hinge member and said second hinge member between an unlatched position in which said second hinge member and said work surface are angularly rotatable about said axis of rotation and a latched position in which said second hinge member and said work surface are locked against rotation relative to said axis of rotation, said work surface adapted to receive and support the object when said hinge pin is in said latched position.
12. The tray of claim 11 wherein said tray includes a spring mechanism for spring biasing said hinge pin relative to said first and said second hinge members and toward said latched position.
13. The tray of claim 12 wherein said hinge pin includes a locking projection extending radially outwardly therefrom and one of said first and said second hinge members includes a side wall having a recess configured and dimensioned to engage said locking projection in said latched position and to disengage said locking projection in said unlatched position.
14. The tray of claim 13 wherein said spring mechanism further includes a stop for limiting a range of movement of said hinge pin within said first and said second hinge members substantially parallel to said axis of rotation.
15. The tray of claim 14 wherein said stop comprises a guide projection extending radially outward from said hinge pin and a slot on one of said first and said second hinge members, said stop movable within said slot.
16. The tray of claim 15 wherein said slot is oriented along said axis of rotation, and said hinge pin is movable substantially parallel to said axis of rotation between the latched position and the unlatched position.
17. The tray of claim 12 wherein said spring mechanism spring biases said hinge pin along said axis of rotation, and said hinge pin is movable substantially parallel to said axis of rotation between the latched position and the unlatched position.
18. The tray of claim 11 wherein said hinge pin is moveable substantially parallel to said axis of rotation between the latched position and the latched position.