All The Claims

1. An interdigitated chip capacitor (\u201cIDC\u201d) assembly comprising:
an IDC comprising:
a semiconductor block with a top portion, a bottom portion opposite said top portion and a plurality of sidewall portions extending between said top and bottom portions; and
a plurality of terminals located on said sidewall portions; and

a substrate a top portion with a plurality of nonconductive vertically extending abutment surfaces thereon, further comprising a plurality of recess wall portions defining a central recess therein, wherein said substrate top portion comprises a plurality of grooves projecting outwardly from said central recess;
said sidewall portions of said IDC being abuttingly engaged with at least some of said plurality of abutment surfaces.
2. The assembly of claim 1 wherein said substrate further comprises:
a plurality of contact pads arranged in a predetermined pattern corresponding to said plurality of terminals of said IDC; and
a plurality of solder beads bonded to said plurality of contact pads and said plurality of terminals.
3. The assembly of claim 1 wherein said central recess has a footprint corresponding to said bottom portion of said semiconductor block.
4. The assembly of claim 1 wherein said substrate comprises:
a plurality of contact pads arranged in a predetermined pattern corresponding to said plurality of terminals of said IDC; and
a plurality of solder beads bonded to said plurality of contact pads and said plurality of terminals;
wherein said plurality of contact pads are located in said plurality of grooves.
5. The assembly of claim 1 wherein said substrate comprises:
a plurality of contact pads arranged in a predetermined pattern corresponding to said plurality of terminals of said IDC; and
a plurality of solder beads bonded to said plurality of contact pads and said plurality of terminals;
wherein said plurality of contact pads are each located adjacent to at least one of said plurality of grooves.
6. The assembly of claim 2 wherein at least some of said abutment surfaces are positioned between adjacent ones of said plurality of solder beads.
7. The assembly of claim 5, said plurality of nonconductive vertically extending abutment surfaces comprising surface portions of said solder beads.
8. The assembly of claim 5 wherein said plurality of grooves each have a depth greater than the depth of said central recess.

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 public key encryption method taking at the input a message M to be encrypted and the public key pk and returning at the output the encrypted message C, said method using a public key probabilistic encryption algorithm EP taking at the input a message mp and a random number u and returning at the output an encrypted item cp, said method also using a secret key encryption algorithm ES taking at the input a message ms and returning at the output an encrypted item cs, said public key probabilistic encryption method using the key pk for encrypting a message, also using a hash function F taking at the input a random number r and the message M, a hash function G and a hash function H, characterised in that it comprises the following eight steps:
a) Randomly generating a random number r;
b) Applying the hash function F to the message M and to the random number r in order to obtain s;
c) Applying the hash function H to s and performing an Exclusive OR of the result with r in order to obtain t;
d) Defining the intermediate message wst, where denotes the concatenation of two bit strings;
e) Applying the encryption algorithm EP to the intermediate message w and to a random number u in order to obtain c1, using the public key pk;
f) Applying the hash function G to w and c1 in order to obtain k;
g) Applying the encryption algorithm ES to the message M using the key k in order to obtain the encrypted item c2;
h) The encrypted message C is Cc1c2.
2. A public key decryption method corresponding to the public key encryption method according to claim 1, said method taking at the input an encrypted message C and the private key sk, sk corresponding to the public key pk of the probabilistic encryption algorithm EP, and returning at the output the plain text message M, said method being characterised in that it comprises the following steps:
i) Splitting the encrypted message C into c1 and c2;
j) Applying to cl a decryption algorithm EP1 corresponding to the encryption algorithm EP, using a private key sk in order to obtain the intermediate message wst;
k) Applying the hash function G to w and c1 in order to obtain k;
l) Applying the decryption algorithm ES1 corresponding to the encryption algorithm ES to the encrypted message c2 using the key k in order to obtain the message M;
m) Applying the hash function H to s and performing an Exclusive OR with t in order to obtain r;
n) Applying the hash function F to the message M and to the random number r in order to obtain s;
o) Verifying that ss;
If s and s are different, rejecting the encrypted message C;
Otherwise, going to step h;

p) Returning the plain text message M.
3. A public key encryption method taking at the input a message M to be encrypted and the public key pk and returning at the output the encrypted message C, said method using a public key deterministic encryption algorithm EP taking at the input a message mp and returning at the output an encrypted item cp, said method also using a secret key encryption algorithm ES taking at the input a message ms and returning at the output an encrypted item cs, said public key deterministic encryption method using the key pk for encrypting a message, also using a hash function F taking at the input a random number r and the message M, a hash function G and a hash function H, characterised in that it comprises the following nine steps:
i) Randomly generating a random number r;
j) Applying the hash function F to the message M and to the random number r in order to obtain s;
k) Applying the hash function H to s and performing an Exclusive OR of the result with r in order to obtain t;
l) Defining the intermediate message wst, where denotes the concatenation of two bit strings;
m) Applying the encryption algorithm EP to the intermediate message w in order to obtain c1, using the public key pk;
n) Applying the hash function G to w and c1 in order to obtain k;
o) Applying the encryption algorithm ES to the message M using the key k in order to obtain the encrypted item c2;
p) The encrypted message C is Cc1c2.
4. A public key decryption method corresponding to the public key encryption method according to claim 3, said method taking at the input an encrypted message C and the private key sk, sk corresponding to the public key pk of the deterministic encryption algorithm EP, and returning at the output the plain text message M, said method being characterised in that it comprises the following steps:
i) Splitting the encrypted message C into c1 and c2;
j) Applying to c1 a decryption algorithm EP1 corresponding to the encryption algorithm EP, using a private key sk in order to obtain the intermediate message wst;
k) Applying the hash function G to w and c1 in order to obtain k;
l) Applying the decryption algorithm ES1 corresponding to the encryption algorithm ES to the encrypted message c2 using the key k in order to obtain the message M;
m) Applying the hash function H to s and performing an Exclusive OR with t in order to obtain r;
n) Applying the hash function F to the message M and to the random number r in order to obtain s;
o) Verifying that ss;
If s and s are different, rejecting the encrypted message C;
Otherwise, going to step h;

p) Returning the plain text message M.
5. A method according to claims 1 and 3, characterised in that the steps d are replaced by the calculation wist or wsit or wsti, where i is any value which may contain useful information like for example the binary size of the message M or the identity of the entity which encrypted M and sent the encrypted message C.
6. A method according to claims 2 and 4, characterised in that the steps b make it possible to obtain wist or wsit or wsti, and deduce therefrom the value i for any calculation or verification purpose.
7. A method according to claims 1 and 3, characterised in that the secret key encryption algorithm ES is replaced in the steps g of claim 1 and g of claim 3 by an Exclusive OR operation between the message M to be encrypted and the key k, in order to obtain the encrypted item c2.
8. A method according to claims 2 and 4, characterised in that the secret key decryption algorithm ES1 is replaced in the steps d of claim 2 and d of claim 4 by an Exclusive OR operation between the message c2 to be encrypted and the key k, in order to obtain the encrypted item M.
9. A method according to any one of the preceding claims, characterised in that the method is used in a portable electronic object of the smart card type.

1. An optical scanning device which scans a scanned surface by a plurality of light beams in a main-scanning direction; comprising:
a light source having a plurality of light-emitting portions which emit the light beams, the light-emitting portions being two-dimensionally arranged in a plane parallel to the main-scanning direction and a sub-scanning direction orthogonal to the main-scanning direction via arrangement intervals in the main-scanning direction and the sub-scanning direction;
a deflector which scans the light beams in the main-scanning direction; and
a scanning optical system which images the scanned light beams onto the scanned surface.
2. An optical scanning device according to claim 1, wherein the arrangement intervals in the sub-scanning direction are an integral multiplication of a size of one light-emitting portion in the sub-scanning direction.
3. An optical scanning device according to claim 1, wherein scanning lines formed on the scanned surface with one scanning are formed via intervals according to the arrangement intervals, and scanning lines adjacent to the scanning lines in the sub-scanning direction are formed by multiple scanning.
4. An optical scanning device according to claim 1, wherein the arrangement intervals in the main-scanning direction and the arrangement intervals in the sub-scanning direction are unequal.
5. An optical scanning device according to claim 4, wherein the arrangement interval of a central portion of the light source in the main-scanning direction is larger than the arrangement interval of both end portions of the light source in the main-scanning direction, and the arrangement interval of the central portion of the light source in the sub-scanning direction is larger than the arrangement interval of the both end portions of the light source in the sub-scanning direction.
6. An optical scanning device according to claim 4, wherein the arrangement intervals become smaller toward both end portions of the main-scanning direction from a central portion of the light source, and become smaller toward both end portions of the sub-scanning direction from the central portion.
7. An optical scanning device according to claim 4, wherein the arrangement intervals become smaller toward both end portions of the main-scanning direction from a central portion of the light source.
8. An optical scanning device according to claim 4, wherein the arrangement intervals become smaller toward both end portions of the sub-scanning direction from a central portion of the light source.
9. An optical scanning device according to claim 4, further comprising plural pairs of light-emitting portions in which the arrangement interval in the main-scanning direction is the largest, wherein out of the plural pairs of light-emitting portions, at least the arrangement interval of the pair of light-emitting portions located in furthermost positions in the sub-scanning direction from a central portion of the light source is the smallest in the arrangement intervals of the plural pairs of light-emitting portions in the sub-scanning direction.
10. An optical scanning device according to claim 1, wherein the light-emitting portions located in both ends in the sub-scanning direction are arranged in positions nearest to a central portion of the light source in the main-scanning direction.
11. An optical scanning device according to claim 1, wherein the plurality of light-emitting portions includes the light-emitting portions in which the positions in the main-scanning direction are the same.
12. An optical scanning device according to claim 1, wherein the arrangement intervals in the sub-scanning directions are unequal.
13. An optical scanning device according to claim 1, wherein the arrangement intervals of the light-emitting portions in the sub-scanning direction, which are adjacently arranged in a central portion of the sub-scanning direction, are larger than the arrangement intervals of the light source in the sub-scanning direction, which are adjacently arranged in other portions of the sub-scanning direction.
14. An optical scanning device according to claim 3, wherein the plurality of the light-emitting portions is arranged in different positions in the sub-scanning direction, and where the number of the light-emitting portions is k, the intervals of the sub-scanning direction of the scanning lines located in both ends of the sub-scanning direction, which are formed on the scanned surface with one scanning, are L1, and the intervals of the sub-scanning direction of the scanning lines adjacent in the sub-scanning direction, which are formed on the scanned face by multiple scanning, are L2, L1, k, and L2 satisfy L1>(k\u22121)\xd7L2.
15. An optical scanning device according to claim 14, wherein L1, k, and L2 satisfy 2k\xd7L2\u2266L1\u22663k\xd7L2.
16. An optical scanning device according to claim 1, further comprising a light guide optical system having a first optical system which couples the light beams emitted from the light-emitting portions, a second optical system which concentrates the coupled light beams in the sub-scanning direction near a deflection face of the deflector, and the scanning optical system, wherein an absolute value of a lateral magnification of the main-scanning direction of the light guide optical system is larger than an absolute value of a lateral magnification of the sub-scanning direction.
17. An optical scanning device according to claim 16, wherein the second optical system includes an optical element which advances a pair of light beams emitted from the light-emitting portions located at furthermost positions in the sub-scanning direction to be parallel or to approach each other after passing through the second optical system.
18. An optical scanning device according to claim 17, further comprising an intermediate member, which retains at least one end of the main-scanning direction of the optical system and is attached to an optical housing which retains the second optical system.
19. An optical scanning device according to claim 1, wherein the light beam has a beam diameter in the main-scanning direction larger than a beam diameter in the sub-scanning direction.
20. An image forming apparatus, which fixes a toner image formed according to an electrostatic latent image obtained from information regarding an image onto a recording medium, comprising:
an optical scanning device according to claim 1,
a photoconductive body having the scanned face on which the electrostatic latent image is formed by the optical scanning device;
a development unit which visualizes the electrostatic latent image formed on the scanned face of the photoconductor as the toner image; and
a transfer unit which fixes the toner image visualized by the development unit onto the recording 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. A method for drying ink in a high speed printing system, the ink being deposited on a sheet of material traveling in a predetermined direction, the system being coupled to a source of pressurized gas and comprising the steps of:
providing a first plenum disposed so as to extend over the sheet;
providing a second plenum disposed so as to extend over the sheet, wherein said plenums each include an associated plurality of orifices spaced apart from one another so as to define respective drying portions thereof, wherein said plenums are spaced substantially apart from one another in the direction of travel of the sheet a predetermined distance, and wherein the drying portions of said plenums are each substantially laterally co-extensive;
selecting one of said two plenums to receive a first predetermined amount of the pressurized gas at a first time; and
selecting the other of said two plenums to receive a second predetermined amount of the pressurized gas at a second time, wherein said second amount of the pressurized gas is predetermined based on said first amount, and wherein the difference between said first time and said second time is substantially equal to said distance divided by the speed of travel of the sheet.
2. An ink drying system for high speed printing with liquid ink on a traveling sheet of material, the system being coupled to a source of pressurized gas and comprising: a first plenum disposed so as to extend over the sheet and define a first drying portion of said first plenum for directing the gas through said first plenum onto the sheet for drying the ink; a first fluid flow valve for varying the flow rate of the gas through said first plenum; and a controller for receiving first information specifically relating to a drying energy required of said first drying portion for drying a portion of the ink deposited on the sheet and automatically controlling said first fluid flow valve so as to vary said flow rate of said gas and therefore said drying energy in response to said first information before said portion completely dries, for causing said drying of said portion.
3. The ink drying system of claim 2, wherein said controller is adapted to control said first fluid valve in response to changes in the drying energy required of said first drying portion for drying different lines of printing.
4. The ink drying system of claim 2, further comprising at least a second plenum disposed so as to extend over the sheet and define a second drying portion of said second plenum for directing the gas through said second plenum onto the sheet, a second fluid flow valve for varying the flow rate of the gas through said second plenum, wherein said controller is adapted to receive second information for determining the drying energy required of said second drying portion and to automatically control said second fluid flow valve in response to said second information, for drying ink deposited on the sheet.
5. The system of claim 4, wherein said drying portions provide substantially complete laterally extending coverage of the sheet, and wherein said first drying portion provides a substantially different range of laterally extending coverage of the sheet than said second drying portion.
6. The system of claim 5, wherein a quantity of the ink is defined by a spatially varying distribution, and wherein said controller is adapted, based on said distribution, to select one of said first and second plenums to receive more of the pressurized gas than the other of said first and second plenums.
7. The ink drying system of claim 6, further comprising a plurality of ink jet printheads for depositing the ink, wherein said first information includes the amount of ink deposited by one of said plurality of ink jet printheads and wherein said second information includes the amount of ink deposited by another of said plurality of ink jet printheads.
8. The system of claim 4, wherein a quantity of the ink is defined by a spatially varying distribution, and wherein said controller is adapted, based on said distribution, to select one of said first and second plenums to receive more of the pressurized gas than the other of said first and second plenums.
9. The system of claim 4, wherein said first and second plenums are spaced substantially apart from one another in a direction of travel of the sheet by a predetermined distance, wherein said first and second drying portions are each substantially laterally co-extensive, wherein said controller is adapted to select one of said first and second plenums to receive a first predetermined amount of the pressurized gas at a first time, and to select the other of said first and second plenums to receive a second predetermined amount of the pressurized gas at a second time, wherein said second amount of the pressurized gas is predetermined based on said first amount, and wherein the difference between said first time and said second time is substantially equal to said distance divided by the speed of travel of the sheet.
10. The ink drying system of claim 2, further comprising at least one ink jet printhead for depositing the ink, wherein said first information includes the amount of ink deposited by said at least one ink jet printhead.
11. The ink drying system of claim 2, wherein said first information comprises substantially instantaneous flow volume data for the liquid ink.
12. A method for high speed printing with liquid ink on a traveling sheet of material, comprising the steps of: providing a first plenum disposed so as to extend over the sheet and define a first drying portion of said first plenum for directing pressurized gas through said first plenum onto the sheet for drying the ink; receiving first information specifically relating to a drying energy and a flow rate of the gas required of said first drying portion for drying a portion of the ink deposited on the sheet; and automatically controlling the flow rate of the gas through said first plenum and therefore said drying energy in response to said first information before said portion completely dries, for causing said drying of said portion.
13. The method of claim 12, further comprising providing at least a second plenum disposed so as to extend over the sheet and define a second drying portion of said second plenum for directing the gas through said second plenum onto the sheet, receiving second information for determining the drying energy required of said second drying portion, and automatically controlling the flow rate of the gas through said second plenum in response to said second information, for drying ink deposited on the sheet.
14. The method of claim 13, wherein said drying portions provide substantially complete laterally extending coverage of the sheet, and wherein said first drying portion provides a substantially different range of laterally extending coverage of the sheet than said second drying portion.
15. The method of claim 14, wherein a quantity of the ink is defined by a spatially varying distribution, and wherein said controlling, based on said distribution, comprises selecting one of said first and second plenums to receive more of the pressurized gas than the other of said first and second plenums.
16. The method of claim 15, further comprising providing a plurality of ink jet printheads for depositing the ink, wherein said first information includes the amount of ink deposited by one of said plurality of ink jet printheads and wherein said second information includes the amount of ink deposited by another of said plurality of ink jet printheads.
17. The method of claim 13, wherein a quantity of the ink is defined by a spatially varying distribution, and wherein said controlling comprises selecting, based on said distribution, one of said first and second plenums to receive more of the pressurized gas than the other of said first and second plenums.
18. The method of claim 13, wherein said first and second plenums are spaced substantially apart from one another in a direction of travel of the sheet by a predetermined distance, and wherein said first and second drying portions are each substantially laterally co-extensive, wherein said controlling comprises selecting one of said first and second plenums to receive a first predetermined amount of the pressurized gas at a first time, and selecting the other of said first and second plenums to receive a second predetermined amount of the pressurized gas at a second time, wherein said second amount of the pressurized gas is predetermined based on said first amount, and wherein the difference between said first time and said second time is substantially equal to said distance divided by the speed of travel of the sheet.
19. The method of claim 12, further comprising controlling said first fluid valve in response to changes in the drying energy required of said first drying portion for drying different lines of printing.
20. The method of claim 12, further comprising providing at least one ink jet printhead for depositing the ink, wherein said first information includes the amount of ink deposited by said at least one ink jet printhead.
21. The method of claim 12, wherein said first information comprises substantially instantaneous flow volume data for the liquid ink.