1. A curtain coating method comprising:
discharging at least one coating liquid from a discharge opening of a slot type die;
forming a coating liquid film of the coating liquid freely falling; and
applying the coating liquid film to a support medium continuously running, with both right and left ends of the coating liquid film being held by a pair of edge guides,
wherein, during non-coating, a direction in which the coating liquid is to be discharged from the discharge opening of the slot type die is kept in a horizontal direction or tilted from the horizontal direction in a direction distancing from the support medium.
2. The curtain coating method according to claim 1, wherein the \u201cduring non-coating\u201d is \u201cbefore the start of coating,\u201d \u201cduring temporary suspension of coating\u201d or \u201cat the end of coating.\u201d
3. The curtain coating method according to claim 1, wherein the slot type die is rotated, so that the direction in which the coating liquid is to be discharged from the discharge opening of the slot type die is tilted at an angle of 0 degrees to 60 degrees with respect to the horizontal direction in the direction distancing from the support medium.
4. The curtain coating method according to claim 1, wherein the slot type die is rotated integrally with or in synchronization with the edge guides, and the edge guides are moved from positions at which the edge guides are located during coating.
5. The curtain coating method according to claim 1, wherein, during non-coating, the slot type die is rotated independently of the edge guides, and the edge guides are moved from positions at which the edge guides are located during coating.
6. The curtain coating method according to claim 1, wherein when an amount of the coating liquid discharged from the slot type die is smaller than that in which the curtain film can be formed, the edge guides are moved from positions at which the edge guides are located during coating to positions other than a region where the coating liquid falls.
7. The curtain coating method according to claim 1, wherein the slot type die is moved in a direction of gravitational force in a state where the direction in which the coating liquid is to be discharged from the discharge opening of the slot type die is kept in the horizontal direction or tilted from the horizontal direction in the direction distancing from the support medium.
8. A curtain coating device comprising:
a slot type die containing a discharge opening from which at least one coating liquid is discharged to form a coating liquid film of the coating liquid freely falling;
a pair of edge guides which hold both right and left ends of the coating liquid film to be applied to a support medium continuously running, and
a unit configured, during non-coating, to keep a direction in which the coating liquid is to be discharged from the discharge opening of the slot type die in a horizontal direction or to tilt the direction in which the coating liquid is to be discharged from the discharge opening of the slot type die from the horizontal direction in a direction distancing from the support medium.
9. The curtain coating device according to claim 8, wherein the \u201cduring non-coating\u201d is \u201cbefore the start of coating,\u201d \u201cduring temporary suspension of coating\u201d or \u201cat the end of coating.\u201d
10. The curtain coating device according to claim 8, wherein the direction in which the coating liquid is to be discharged from the slot type die is 0 degrees to 60 degrees with respect to the horizontal direction in the direction distancing from the support medium.
11. The curtain coating device according to claim 8, further comprising: a moving unit configured to move the edge guides from positions at which the edge guides are located during coating.
12. The curtain coating device according to claim 8, further comprising: a unit configured to move the slot type die in a direction of gravitational force in a state where the direction in which the coating liquid is to be discharged from the discharge opening of the slot type die is kept in the horizontal direction or tilted from the horizontal direction in the direction distancing from the support medium.
13. The curtain coating device according to claim 8, further comprising: a die cleaning and air bubble removal pan, wherein the die cleaning and air bubble removal pan is located during non-coating in the vicinity of the discharge opening of the slot type die.
14. The curtain coating device according to claim 8, further comprising: a liquid flowing-down guide plate, wherein the liquid flowing-down guide plate is located in the vicinity of a lip of the slot type die.
15. The curtain coating device according to claim 8, further comprising: a coating liquid anti-scattering member, wherein the coating liquid anti-scattering member is located during non-coating at a position facing the discharge opening of the slot type die.
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 multipath analog to digital converter comprising:
at least two subconverters each operable to sample respective samples of an analog signal applied to the multipath analog to digital converter and to output a digital value representing the sample of the analog signal; and
at least one measure and correction block operable to determine mismatches in bandwidths of the at least two subconverters and to output a correction signal representing the mismatches in bandwidths of the at least two subconverters, the correction signal comprising an analog signal applied to the input of the multipath analog to digital converter, the correction signal altering the operation of the multipath analog to digital converter to reduce error in the output of the multipath analog to digital converter.
2. A multipath analog to digital converter according to claim 1 wherein the at least one measure and correction block is further operable to determine differential nonlinearity (DNL) of the at least two subconverters and to output an additional correction signal to compensate for the DNL, the additional correction signal further altering the operation of the multipath analog to digital converter.
3. A multipath analog to digital converter comprising:
at least two subconverters each operable to sample respective samples of an analog signal applied to the multipath analog to digital converter and to output a digital value representing the sample of the analog signal; and
at least one measure and correction block operable to determine mismatches in bandwidths of the at least two subconverters and to output a correction signal representing the mismatches in bandwidths of the at least two subconverters, the correction signal comprising an analog signal applied to the input of the multipath analog to digital converter and a digital signal applied to the output of the multipath analog to digital converter, the correction signal altering the operation of the multipath analog to digital converter to reduce error in the output of the multipath analog to digital converter.
4. A multipath analog to digital converter according to claim 3 wherein the at least one measure and correction block is further operable to determine differential nonlinearity (DNL) of the at least two subconverters and to output an additional correction signal to compensate for the DNL, the additional correction signal further altering the operation of the multipath analog to digital converter.
5. A multipath analog to digital converter comprising:
at least two subconverters each operable to sample respective samples of an analog signal applied to the multipath analog to digital converter and to output a digital value representing the sample of the analog signal; and
at least one measure and correction block operable to determine mismatches in bandwidths of the at least two subconverters and to output a correction signal representing the mismatches in bandwidths of the at least two subconverters, the correction signal controlling a weighting of addition of samples representing undelayed and delayed samples of the multipath analog to digital converter, the correction signal altering the operation of the multipath analog to digital converter to reduce error in the output of the multipath analog to digital converter.
6. A multipath analog to digital converter according to claim 5 wherein the at least one measure and correction block comprises an adaptive finite impulse response filter.
7. A multipath analog to digital converter according to claim 5 wherein the at least one measure and correction block is further operable to determine differential nonlinearity (DNL) of the at least two subconverters and to output an additional correction signal to compensate for the DNL, the additional correction signal further altering the operation of the multipath analog to digital converter.
8. A multipath analog to digital converter comprising:
at least two subconverters each operable to sample respective samples of an analog signal applied to the multipath analog to digital converter and to output a digital value representing the sample of the analog signal; and
at least one measure and correction block operable to determine mismatches in bandwidths of the at least two subconverters and to output a correction signal representing the mismatches in bandwidths of the at least two subconverters, the correction signal altering the operation of the multipath analog to digital converter to reduce error in the output of the multipath analog to digital converter, the at least one measure and correction block further operable to apply the correction signal to the output of the multipath analog to digital converter before a gain correction signal is applied.
9. A multipath analog to digital converter according to claim 8 wherein the at least one measure and correction block is further operable to determine differential nonlinearity (DNL) of the at least two subconverters and to output an additional correction signal to compensate for the DNL, the additional correction signal further altering the operation of the multipath analog to digital converter.
10. A multipath analog to digital converter comprising:
at least two subconverters each operable to sample respective samples of an analog signal applied to the multipath analog to digital converter and to output a digital value representing the sample of the analog signal; and
at least one measure and correction block operable to determine mismatches in bandwidths of the at least two subconverters and to output a correction signal representing the mismatches in bandwidths of the at least two subconverters, the correction signal altering the operation of the multipath analog to digital converter to reduce error in the output of the multipath analog to digital converter, the at least one measure and correction block further operable to apply the correction signal to the output of the multipath analog to digital converter after a timing correction signal is applied.
11. A multipath analog to digital converter according to claim 10 wherein the at least one measure and correction block is further operable to determine differential nonlinearity (DNL) of the at least two subconverters and to output an additional correction signal to compensate for the DNL, the additional correction signal further altering the operation of the multipath analog to digital converter.
12. A multipath analog to digital converter comprising:
at least two subconverters each operable to sample respective samples of an analog signal applied to the multipath analog to digital converter and to output a digital value representing the sample of the analog signal; and
at least one measure and correction block operable to determine mismatches in bandwidths of the at least two subconverters and to output a correction signal representing the mismatches in bandwidths of the at least two subconverters, the correction signal altering the operation of the multipath analog to digital converter to reduce error in the output of the multipath analog to digital converter, the at least one measure and correction block further operable to apply the correction signal to the output of the multipath analog to digital converter after an offset correction signal is applied.
13. A multipath analog to digital converter according to claim 12 wherein the at least one measure and correction block is further operable to determine differential nonlinearity (DNL) of the at least two subconverters and to output an additional correction signal to compensate for the DNL, the additional correction signal further altering the operation of the multipath analog to digital converter.
14. A multipath analog to digital converter comprising:
at least two subconverters each operable to sample respective samples of an analog signal applied to the multipath analog to digital converter and to output a digital value representing the sample of the analog signal; and
at least one measure and correction block operable to determine mismatches in bandwidths of the at least two subconverters and to output a correction signal representing the mismatches in bandwidths of the at least two subconverters, the correction signal altering the operation of the multipath analog to digital converter to reduce error in the output of the multipath analog to digital converter, the at least one measure and correction block further operable to apply the correction signal to the output of the multipath analog to digital converter after a differential nonlinearity (DNL) correction signal is applied.
15. A multipath analog to digital converter comprising:
at least two subconverters each operable to sample respective samples of an analog signal applied to the multipath analog to digital converter and to output a digital value representing the sample of the analog signal; and
at least one measure and correction block operable to determine differential nonlinearity (DNL) of the at least two subconverters and to output a correction signal to compensate for the DNL, the correction signal comprising an analog signal applied to the input of the multipath analog to digital converter and a digital signal applied to the output of the multipath analog to digital converter, the correction signal altering the operation of the multipath analog to digital converter to reduce error in the output of the multipath analog to digital converter.
16. A multipath analog to digital converter comprising:
at least two subconverters each operable to sample respective samples of an analog signal applied to the multipath analog to digital converter and to output a digital value representing the sample of the analog signal; and
at least one measure and correction block operable to determine differential nonlinearity (DNL) of the at least two subconverters and to output a correction signal to compensate for the DNL, the correction signal altering the operation of the multipath analog to digital converter to reduce error in the output of the multipath analog to digital converter, the at least one measure and correction block operable to determine the correction signal based on a preselected bit transition in samples of the multipath analog to digital converter and to selectively add the correction signal to samples of the multipath analog to digital converter based on a value of the preselected bit.
17. A multipath analog to digital converter according to claim 16 wherein the preselected bit comprises the most-significant bit.