1. A printed matter for measuring printing precision of a printing apparatus configured to perform printing to both sides of a printing medium, comprising:
a plurality of positioning reference marks printed orthogonal to a transportation direction of the printing medium;
an inspecting window bored in a positioning reference mark of the plurality of positioning reference marks, the positioning reference mark corresponding to an object to be inspected,
the printing medium being folded so as to make another positioning reference mark on the printing medium visible through the inspecting window, and the positioning reference mark on a side of the inspecting window being compared with the positioning reference mark visible through the inspecting window, thereby measuring printing precision.
2. A printing apparatus configured to perform printing to both sides of a printing medium, comprising:
a printing device configured to print a plurality of positioning reference marks orthogonal to a transportation direction of the printing medium, wherein
an inspecting window is bored in a positioning reference mark of the plurality of positioning reference marks, the positioning reference mark corresponding to an object to be inspected, the printing medium is folded so as to make another positioning reference mark on the printing medium visible through the inspecting window, and the positioning reference mark on a side of the inspecting window is compared with the positioning reference mark visible through the inspecting window, thereby measuring printing precision.
3. A printing precision measuring method for measuring printing precision of a printing apparatus configured to perform printing to both sides of a printing medium, comprising:
a printing step of printing a plurality of positioning reference marks orthogonal to a transportation direction of the printing medium;
an inspecting window forming step of forming an inspecting window by boring a hole in a positioning reference mark of the plurality of positioning reference marks, the positioning reference mark corresponding to an object to be inspected; and
a printing precision measuring step of measuring printing precision by folding the printing medium so as to make another positioning reference mark on the printing medium visible through the inspecting window and comparing the positioning reference mark on a side of the inspecting window with the positioning reference mark visible through the inspecting window.
4. The printing precision measuring method according to claim 3, wherein
one test sample is generated in the printing step,
the inspecting window is formed as a pair of inspecting windows forming step by boring the hole only in the center of a pair of positioning reference marks in the one test sample, the pair of positioning reference marks being on one side away from a bend line generated upon folding the test sample parallel to the transportation direction, and
in the printing precision measuring step, the one test sample is folded along the bend line, and the pair of positioning reference marks on the side of the inspecting window is aligned with the pair of positioning reference marks on an opposite side across the bend line, a printing length on one side of the test sample is measured from a distance between the pair of positioning reference marks visible through the pair of inspecting windows, a printing length on the other side of the test sample is measured from a distance between the pair of positioning reference marks on the side of the inspecting window, and a deviation of printing start positions on the one side and the other side is measured from a deviation amount of the positioning reference marks on the side of the pair of inspecting window and the positioning reference marks visible through the pair of inspecting windows in a direction orthogonal to the transportation direction.
5. The printing precision measuring method according to claim 3, wherein
a linear test pattern is printed orthogonal to the transportation direction in the printing step, and
one end of the one test sample along the pair of inspecting windows is folded by a given width toward the pair of inspecting windows with the test sample being folded to confirm the linear test pattern at a folded portion of the test sample to the linear test pattern exposed due to folding the test sample.
6. The printing precision measuring method according to claim 3, wherein
two test samples are generated in the printing step,
in the inspecting window forming step, only the center of each of a first positioning reference mark, a second positioning reference mark, and a third positioning reference mark each seen like a hook in plan view is bored to form an inspecting window, the first and second positioning reference marks of one of the test sample being away from each other at two portions along the end in the transportation direction and the third positioning reference mark being away from the first positioning reference mark across the center in the transportation direction, and
in the printing precision measuring step, one of the test samples is turned by 90 degrees relative to the other test sample to locate the other test sample on a back face of the one test sample, the first positioning reference mark conforms to the positioning reference mark of the other test sample through the inspecting window and the third positioning reference mark conforms to the positioning reference mark of the other test sample through the inspecting window, and thereafter, a deviation amount of the second positioning reference mark and the positioning reference mark of the other test sample through the inspecting window relative to a line connecting the first positioning reference mark with the second positioning reference mark is measured, whereby orthogonality in the transportation direction of the printing medium and the printing device configured to perform printing to the printing medium is measured.
7. The printing precision measuring method according to claim 3, wherein
two test samples are generated in the printing step,
in the inspecting window forming step, one test sample is cut to form a strip piece containing the plurality of positioning reference marks printed on one side of the one test sample, a notch is formed in each of the plurality of positioning reference marks on one side, the notch being foldable relative to a line along the transportation direction, and the strip piece is reversed in the transportation direction such that the other side of the strip piece is directed upward, and each notch is folded to the other side, whereby the inspecting window is formed, and
in the printing precision measuring step, the strip piece overlaps the plurality of positioning reference marks in the other test sample, and under a state where both ends of the plurality of positioning reference marks in the strip piece are aligned with both ends of the plurality of positioning reference marks in the other test sample by the line orthogonal to the transportation direction, a deviation amount of the positioning reference marks visible through the plurality of inspecting windows other than the both ends and orthogonal to the transportation direction and the positioning reference mark on the plurality of inspecting windows and folded orthogonal to the transportation direction is measured, whereby a step in the transportation direction of the plurality of printing heads orthogonal to the transportation direction is measured.
8. The printing precision measuring method according to claim 3, wherein
the plurality of positioning reference marks each have a cross shape formed by a line in the transportation direction of the printing medium and a line orthogonal to the transportation direction of the printing medium.
9. The printing precision measuring method according to claim 4, wherein
the plurality of positioning reference marks each have a cross shape formed by a line in the transportation direction of the printing medium and a line orthogonal to the transportation direction of the printing medium.
10. The printing precision measuring method according to claim 5, wherein
the plurality of positioning reference marks each have a cross shape formed by a line in the transportation direction of the printing medium and a line orthogonal to the transportation direction of the printing medium.
11. The printing precision measuring method according to claim 6, wherein
the plurality of positioning reference marks each have a cross shape formed by a line in the transportation direction of the printing medium and a line orthogonal to the transportation direction of the printing medium.
12. The printing precision measuring method according to claim 7, wherein
the plurality of positioning reference marks each have a cross shape formed by a line in the transportation direction of the printing medium and a line orthogonal to the transportation direction of the printing medium.
13. The printing precision measuring method according to claim 3, wherein
the plurality of positioning reference marks is printed on a printing start position and a printing termination position of the printing medium.
14. The printing precision measuring method according to claim 4, wherein
the plurality of positioning reference marks is printed on a printing start position and a printing termination position of the printing medium.
15. The printing precision measuring method according to claim 5, wherein
the plurality of positioning reference marks is printed on a printing start position and a printing termination position of the printing medium.
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. Method for operating a powertrain including an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine at a transmission input and a plurality of electric machines for mechanical power flow to a transmission output through selective actuation of a plurality of torque-transfer devices, said electric machines electrically-operatively coupled to an energy storage system for electric power flow therebetween, said electro-mechanical transmission selectively operative in one of a plurality of continuously variable and fixed gear operating range states, the method comprising:
commanding operation of the electro-mechanical transmission in one of the continuously variable operating range states;
commanding operation of the engine in a closed-loop speed control mode which always includes operation of the engine;
monitoring rotational speed of the transmission input, each of the plurality of electric machines, and the transmission output, and;
monitoring operator inputs comprising an operator torque request and an operator braking request;
during operation of the engine in the closed-loop speed control mode, detecting presence of a potential mismatch between the commanded operating range state comprising said one of the continuously variable operating range states and an actual operating range state comprising one of the fixed gear operating range states based upon a determined deceleration in the transmission output due to the presence of the potential mismatch; and,
modifying operation of the powertrain when a change in the rotational speed of the transmission output exceeds a threshold absent a corresponding change in the monitored operator inputs.
2. Method for operating a powertrain including an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine at a transmission input and a plurality of electric machines for mechanical power flow to a transmission output through selective actuation of a plurality of torque-transfer devices, said electric machines electrically-operatively coupled to an energy storage system for electric power flow therebetween, said electro-mechanical transmission selectively operative in one of a plurality of continuously variable and fixed gear operating range states, the method comprising:
commanding operation of the electro-mechanical transmission in one of the continuously variable operating range states;
commanding operation of the engine in a closed-loop speed control mode;
monitoring rotational speed of the transmission input, each of the plurality of electric machines, and the transmission output, and;
monitoring operator inputs comprising an operator torque request and an operator braking request;
detecting presence of a potential mismatch between the commanded operating range state and an actual operating range state based upon the transmission output, comprising:
calculating a time-rate change in the rotational speed of the transmission output;
determining the time-rate change in the rotational speed of the transmission output exceeds a threshold; and
modifying operation of the powertrain when a change in the rotational speed of the transmission output exceeds the threshold absent a corresponding change in the monitored operator inputs.
3. The method of claim 2, wherein the threshold corresponds to a vehicular acceleration rate of about three meters per second per second.
4. The method of claim 3, wherein the time-rate change in the rotational speed of the transmission output and the threshold comprise absolute values.
5. The method of claim 2, wherein modifying operation of the powertrain further comprises terminating operating the engine in the closed-loop speed control mode when the time-rate change in the rotational speed of the transmission output exceeds the threshold absent a change in the operator brake input.
6. Method for operating a powertrain including an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine at a transmission input and a plurality of electric machines for mechanical power flow to a transmission output through selective actuation of a plurality of torque-transfer devices, said electric machines electrically-operatively coupled to an energy storage system for electric power flow therebetween, said electro-mechanical transmission selectively operative in one of a plurality of continuously variable and fixed gear operating range states, the method comprising:
commanding operation of the electro-mechanical transmission in one of the continuously variable operating range states comprising selectively actuating a single one of the torque-transfer devices;
commanding operation of the engine in a closed-loop speed control mode;
monitoring rotational speed of the transmission input, each of the plurality of electric machines, and the transmission output, and;
monitoring operator inputs comprising an operator torque request and an operator braking request;
detecting presence of a potential mismatch between the commanded operating range state and an actual operating range state based upon the transmission output; and
modifying operation of the powertrain when a change in the rotational speed of the transmission output exceeds a threshold absent a corresponding change in the monitored operator inputs.
7. The method of claim 1, further comprising determining absence of a mismatch between the commanded operating range state and the actual operating state of the transmission.
8. The method of claim 7, further comprising
determining slippage across each of the torque-transfer devices based upon the monitored rotational speeds of the transmission input, the transmission output, and, the electric machines; and,
determining clutch slippage is not zero for each of the torque-transfer devices not selectively actuated.