Okun K Kwan

46003215, Jul 15, 1986

Feb 6, 1985

6/698556

Okun Kwan - Trumbull CT

B41J 312

400124

A high speed matrix print head assembly is provided for precisely locating the multiple armatures between the magnetic yoke and print pin of the assembly. An armature guide and supporting spring member is provided having guide slots therein which cooperate with an armature positioning stud protruding through the armature from the armature housing. The armature guide and supporting spring member has a raised longitudinal ridge thereon forming a fulcrum point contact line between the magnetic yoke and the armature guide and supporting spring member to provide a predetermined spring load to the fulcrum point line where the armature pivots. An additional armature spring may provide an additional predetermined spring load. The precise location of the armature and providing a predetermined spring load with the fulcrum line of the armature allows high speed up and down motion of the armature without the interference of other motion. Gap adjustment is also provided by two or four adjustment screws for moving the magnetic assembly with respect to the armatures mounted in the armature housing.

39789640, Sep 7, 1976

Jul 31, 1974

5/493398

Okun Kwan - Trumbull CT

Bunker Ramo Corporation - Oak Brook IL

B41J 1312
B41J 1992

197127R

A printing apparatus is provided for printing on a document or bank passbook which has affixed thereto a magnetic stripe on which information with respect to the print operation is written and/or read by a magnetic head scanning assembly. The printing apparatus includes a document holder for accommodating the document to be printed on, and an automatic line positioning device in the form of a stepper motor to move the holder, and accordingly the document, to the line to be printed on as recorded on the magnetic stripe, at which time the platen is advanced against the document, and the data printed on the line by the print head. The magnetic head scanning assembly at beginning-of-stripe position is retracted from the magnetic stripe on the document, and when actuated, advances the head to contact the magnetic stripe to read data on the stripe. Having obtained print line information from the magnetic stripe, the passbook is automatically positioned at the proper print line by the stepper motor, the platen is advanced, and the data is printed thereon. The platen is retracted and the passbook is returned to the home position, where the platen is again advanced, and the magnetic head scanner assembly writes updated information on the magnetic stripe.

40541983, Oct 18, 1977

Feb 2, 1976

5/654131

Okun Kwan - Trumbull CT

Bunker Ramo Corporation - Oak Brook IL

B41J 1312
B41J 1992

197127R

A printing apparatus is provided for printing on a document or bank passbook which has affixed thereto a magnetic stripe on which information with respect to the print operation is written and/or read by a magnetic head scanning assembly. The printing apparatus includes a document holder for accommodating the document to be printed on, and an automatic line positioning device in the form of a stepper motor to move the holder, and accordingly the document, to the line to be printed on as recorded on the magnetic stripe, at which time the platen is advanced against the document, and the data printed on the line by the print head. The magnetic head scanning assembly at beginning-of-stripe position is retracted from the magnetic stripe on the document, and when actuated, advances the head to contact the magnetic stripe to read data on the stripe. The magnetic head scanning assembly includes three photosensors spaced along the path of travel of the scan assembly, providing signals at the beginning-of-stripe position, head-in-contact position, and end-of-stripe position, which returns the scanning assembly to the beginning-of-stripe position where the assembly is retracted away from the document, and the platen is retracted. Having obtained print line information from the magnetic stripe, the passbook is automatically positioned at the proper print line by the stepper motor, the platen is advanced, and the data is printed thereon.

41792238, Dec 18, 1979

Sep 22, 1977

5/835559

Okun Kwan - Trumbull CT
Nicholas Zaccagnino - Stamford CT

Bunker Ramo Corporation - Oak Brook IL

B41J 1914
B41J 1978
B41J 2100
B41J 2108

400320

Three fixed optical sensing devices are positioned to sense the left and right margins as well as the center location of high speed printer carriage travel. Signals from the sensing devices are fed to programmed carriage logic control circuits which effect rapid carriage movements relative to the center location as well as the traditional left and right margin locations. Printing time of certain forms is greatly reduced by minimizing unnecessary carriage return to the left margin location.

40390691, Aug 2, 1977

Feb 5, 1976

5/655365

Okun Kwan - Trumbull CT
Nicholas V. Zaccagnino - Stamford CT

Bunker Ramo Corporation - Oak Brook IL

B41J 1322

197127R

A printing apparatus is provided for printing on a document, such as a bank passbook, which has affixed thereto a magnetic stripe on the cover on which information with respect to the print operation to be performed is written and/or read by a magnetic scanning assembly. The magnetic stripe is positioned on the document parallel to the centerfold and the unbound edge of the cover nearest the last line to be printed on the document. When inserted in the print apparatus, the platen of the printing apparatus clamps the document with stripe positioned above and aligned with the platen to facilitate the scanning of the magnetic stripe by the magnetic head of the scanner assembly. The magnetic head is spring loaded to accommodate surface variations of the magnetic stripe and different passbook thicknesses.

D2463059, Nov 8, 1977

Jun 28, 1976

5/700590

William Gergely - Monroe CT
Okun Kwan - Trumbull CT

D1401

D14 6

41324862, Jan 2, 1979

Jan 5, 1977

5/757130

Okun Kwan - Trumbull CT

Bunker Ramo Corporation - Oak Brook IL

B41J 3358

400213

The present mechanism includes a vertically moving platform which raises and lowers a printing ribbon relative to the moving printhead of a printer. When the printhead is at its home position, the platform is at its raised position thereby locating the lowermost portion of the ribbon at the printhead. As the printhead starts to move during its printing cycle, the platform will progressively lower so that when the printhead is at the center of its travel, the platform will be in its lowered position, thus locating the uppermost portion of the ribbon at the printhead. As the printhead continues to the end of its travel, the platform will end up at its raised position thus locating the lowermost portion of the ribbon at the printhead. This raising and lowering of the platform presents the ribbon to the printhead in overlapping arched patterns, thereby utilizing the full width of a printing ribbon.

40291936, Jun 14, 1977

Mar 31, 1975

5/563528

Okun Kwan - Trumbull CT

Bunker Ramo Corporation - Oak Brook IL

B41J 1120

197149

A bound booklet is opened and inserted into a guide. A platen, having individual spring biased segments, is positioned against the booklet covers while printing means move horizontally across the open pages of the booklet. A first platen segment contacts the front cover of the open booklet, while a second segment contacts the back cover. An intermediate shortened segment yields to the binding edge of the booklet. Thus, the varying thickness of the booklet is compensated for and a flat printing plane is presented to the printing means. A single leaf document may be accommodated, instead of a booklet. In the case of a single leaf, the resilient nature of the platen compensates for single leaf documents of different thickness, within a permissible range.