专利检索_....连续印刷机类型（B41J2/25B41J2/265优先）专利检索_....连续印刷机类型（B41J2/25B41J2/265优先）专利检索查询_....连续印刷机类型（B41J2/25B41J2/265优先）专利检索查询分析平台

序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
141	Wire printhead with armature biasing mechanism	US227793	1994-04-14	US5454649A	1995-10-03	Sergio Cattaneo
A wire printhead comprising a plurality of electromagnets and a corresponding plurality of armatures, each provided with an actuator arm forming, with the juxtaposed armature to an electromagnet, a lever of first order for actuating an impression wire attached to a free end of the actuator arm, said lever being biased to the rest position by a flexurally pre-loaded leaf spring acting on the lever in a predetermined position with respect to the lever fulcrum, through a resilient element which defines the point of application to the lever of the force from the leaf spring.
142	Wire print head and process for fabricating it	US759161	1991-09-13	US5232295A	1993-08-03	Hirokazu Andou; Mitsuru Kishimoto; Masahiro Tatsukami
A permanent magnet suitable for use in a wire print head is formed of plural split segments. Each split segment is formed by compressing metal powder in a punching direction in the presence of a magnetic field that is perpendicular to the punching direction. The split segments are combined together into an annular configuration. The permanent magnet so formed is attached to a base, followed by the assembly of a base plate and cores to form a magnet assembly. The base plate and the cores are then surface-finished so as to be flush relative to each other.
143	Print head with lubricator	US550547	1990-07-10	US5205659A	1993-04-27	Bernd Gugel; Johann Stempfle
A matrix print head comprises several armature device groups which, in each case, comprise a magnet yoke (9) with an electromagnetic coil (10), disposed on one of the magnet yoke arms (9a), and an armature (8), which armature serves as a drive for a print element (2). The armature (8) can be moved in a rapid sequence against the pole faces (20b) of the magnet yokes (9) and back into a rest position. In order to reduce the wear at the pole faces (20a and 20b) or, respectively, at the wear faces (18), high temperature-stable lubricants can be disposed and intercalated in capillary hollow spaces (17) of armatures (8) and/or magnet yokes (9). These capillary hollow spaces (17) are adjoining and running to the wear faces (18).
144	Wire dot print head having a bipartite partitioning sheet	US644975	1991-01-23	US5141341A	1992-08-25	Tatsuya Koyama; Katsuya Kamimura; Kiyoshi Ikeda
In a wire dot print head, swinging members are formed of plate springs and armatures, which are attracted toward a core to resiliently deform a plate spring when an associated coil is not energized, and are released and moved forward when the coil is energized. The swinging members are swung about the forward tip ends of fulcrum members. A partition sheet is interposed between the rear surfaces of the swinging members and both the front ends of the cores and the front tip ends of the fulcrum members to interrupt transfer of grease, and to prevent direct contact of the cores and the fulcrum members with the armatures. The partition sheet includes a front plastic film, a metallic residual sheet, and a rear plastic film which are stacked in the stated order from the front side to the rear side of the print head. The front film is bonded to the metallic residual sheet over the entire surface of the metallic residual sheet. By bonding the front film and the metallic residual sheet, migration of the grease from the rear side to the front side of the partition sheet is prevented, and adhesion of the grease to the plate springs is also prevented. Moreover, because of the bonding, the metallic residual sheet is prevented from contacting the air and hence from rusting.
145	Dot matrix print head	US766213	1991-09-27	US5123759A	1992-06-23	Masami Horii; Takashi Kondoh; Takeji Tuchiya
The present invention provides a compact dot matrix print head comprising a housing internally provided with print wires, electromagnets for driving the print wires, a printed wiring board having a diameter smaller than the outside diameter of the rear end of the housing, fixedly joined to the rear end of the housing and provided with wiring patterns connected to the coils of the electromagnets, connectors connected to the outer surface of the printed wiring board so that the conductors thereof are connected electrically to the wiring patterns, and flexible cables each having one end connected to the connector and the other end connected to a driving unit for driving the electromagnets.
146	Print head assembly of a printing device	US389371	1989-08-03	US5056941A	1991-10-15	Shigeki Kato; Yoshihumi Suzuki; Yasuji Chikaoka; Miyuki Morimoto; Hiroyuki Watanabe; Noriyuki Yoneyana
A print head assembly of a printing device, in which a supporting member flexibly supporting a plurality of armature members, and a permanent magnet member urging the armatures in one direction by means of its magnetic force and arranged between a head body as a yoke member, including plurality of cores wound individually with solenoid coils, and a cover member integrally formed with a guide member having a nose for guiding a number of print wires. All these members are joined together along an assembling axis. The cover member has apertures individually formed at positions corresponding to the armature members, the armature members being secured to the supporting member by irradiation of an electron beam or a laser beam from the outside through the apertures.
147	Releasing type dot printer head	US349832	1989-05-10	US5011308A	1991-04-30	Masashi Shimosato; Kuniaki Ochiai
Supporting parts are disposed on both sides of the end parts of a plurality of armatures to which needles are fixed. Elastic members are held by elastic-member-holding parts with limited play in the longitudinal direction of the armatures. The elastic members are inserted into wide holding parts allowing play in the longitudinal direction of the armatures, and needles are disposed in fixed positions. The elastic members are welded to elastic-member-holding parts and wide holding parts with the tip positions of needles used as standards.
148	Print head	US363701	1989-06-09	US4915517A	1990-04-10	Robert G. Husome
A print head for the print wire impact type dot matrix printer, including means for producing a gas flow into a sealed print head housing and through tubular linear bearings of an end guide to prevent migration of ribbon ink into the bearings and the housing. Sufficient gas pressure is provided to create gas bearings for each print wire to reduce friction between the reciprocally moving print wire and the end guide for superior performance and to lessen wear on both the print wire and the guide. Gas flow to create gas bearings in internal guides is also provided.
149	Dot matrix printer having interchangeable print head and font cartridge	US42173	1987-04-24	US4778291A	1988-10-18	Shuji Mitsuhashi
A dot printer comprising a printer head freely detachably attached to a carriage in the printer and a system cartridge also freely detachably attached to the printer, said system cartridge having stored a character front and a firmwear program therein, wherein the number of dots printed can be changed by exchanging the printer head and the system cartridge with those which are different in number of pins used. Printing can be thus done with any desired numbers of dots which meet various purposes and one dot printer can be used for various purposes with extremely high economy.
150	Dot printer operable in high resolution and ordinary printing modes	US539925	1983-10-07	US4630946A	1986-12-23	Seiki Mizutani; Mikio Hayashi; Kazuaki Ikeda
Disclosed is a printing method by using a printer of the cross hammer type, which comprises the steps of driving, in the backward travelling of a printing head, a rotary drum which is provided with a plurality of axially parallelly extending on its outer circumferential periphery, to rotate in the direction opposite to the rotational direction of the same in the forward travelling of the printing head, and driving the printing hammer such that dots are formed, in the backward travelling of the printing hammer, between dot rows formed in the forward travelling of the printing hammer so that printing is performed over one line through one reciprocating traveling of the printing head. Preferably, the printing mode is selectable between a high resolution one and an ordinary one such that in the high resolution mode, the printing head is driven in the backward travelling of the printing hammer, dots are formed between dot rows formed in the forward travelling of the printing hammer so that printing is performed over one line through one reciprocating traveling of the printing head, and in the ordinary mode, the printing hammer is driven to perform printing over one line and a new line making through each of the forward and backward travelling of the printing head.
151	High quality printing method	US758860	1985-07-24	US4601593A	1986-07-22	Giancarlo Collina; Giannico Stefani
A high quality printing method utilizing a matrix serial printer having a print head provided with needles arranged in a vertical column. The method comprises the steps of printing a print line in two print passes, and in advancing a platen, between the first and the second pass, by an amount equal to one and a half times the vertical pitch, center to center, between two contiguous needles.
152	High speed impact matrix printer	US370792	1982-04-22	US4428692A	1984-01-31	Jack W. Cannon
An improved high speed impact matrix printer is provided for use with data processing systems and digital communication systems. In the serial wire matrix printer (10) of the preferred embodiment, a printhead (36) has print wires (90) arranged as a column within a wire guide (88). The printhead (36) is stepped serially across a print record, and print wire drivers (68) fire the print wires (90) in accordance with character configuration information in storage to effect the printing of a line of characters. The impact head of each print wire (90) is elongated with its longitudinal dimensions extending in the direction of relative movement of the printhead (36) along the print line. The elongated impact head of the print wire (90) extends over a plurality of print firing locations of a matrix character pattern to reduce the number of times the print wire drivers (68) must fire the print wires (90) to print a character.
153	Dot printing device for accounting, terminal, telewriting machine, and similar office machine	US199189	1980-10-21	US4408907A	1983-10-11	Francesco Bernardis
A printing device comprising a printing head having 18 wires actuated by a corresponding number of control electro-magnets for writing on a recording support symbols and characters in conformity with dot matrices. The writing ends of the wires are aligned along a single line, the slanting of which relative to the direction of movement of the carriage is variable. With the writing ends vertically aligned the height of the 18 wires is equal to that of two lines of writing, as a result of which it is possible to print two rows of characters simultaneously. By inclining the head and suitably selecting the speed of movement it is possible to print a line at a time with high definition dot matrices.
154	Improved bar code and alpha-numeric printer	US310198	1981-10-09	US4396303A	1983-08-02	Lars E. Uddgren
A printing device adapted to print a bar code on a moving information carrier, preferably in the form of a label for marking an article or packaged goods, said bar code consisting of a plurality of parallel bar imprints of different widths separated by spacings lying therebetween. The invention is characterized in that there is provided one single printing member for all of the bar imprints of the bar code, the imprint width of said printing member being not greater than the smallest width of any bar imprint appearing in said bar code, and said printing member being operatively connected to an actuating unit coupled to a programmable control unit, which is adapted to generate control signals at small enough time intervals to form bar imprints of larger width by juxtaposing of bar imprints of the width of said printing member without intervening spacings. The use of only one single printing member not only results in a considerable structural simplification, but also permits the printing device to be universally employed for any existing and future bar codes, the narrowest bar imprints of which correspond to the imprint width of the printing member. The narrow printing member produces a sharply defined and accurately readable imprint also for bars of larger width.
155	Wire matrix printing apparatus	US267444	1981-05-27	US4382701A	1983-05-10	Keith B. Davenport
A wire matrix printing head moveable along a printing line on a record medium is described in which a ring of wire-selection electromagnets are grouped about the wire guiding arrangement, the electromagnets each having a basic yoke assembly with a pair of limbs each able to support a separate energising coil. The electromagnet armatures are supported by a common frame having a plurality of finger-like structures, one for each armature, on which the armatures are respectively pivoted. The printing wires are spring loaded into their restored positions and abut their respective armatures, which are supported in their respective unoperated positions each by an adjustable resilient backstop. The printing wires are supported in guides so that they are arranged in two columns, both the columnar pitch and the pitch of nominally adjacent wires in the columns being of the order of the wire diameter. Control of wire selection from the two columns is arranged to prohibit a further selection of any one wire for printing unless the printing head has moved along the printing line for a distance equal to twice the columnar pitch.
156	Printhead assembly for typewriters or the like	US163674	1980-06-27	US4329075A	1982-05-11	Steven L. Applegate; James J. Molloy
A printhead assembly for a typewriter of the kind that swipes a printhead along a ribbon in producing marks on a receiving medium, is mounted to pivot and includes a ribbon guide that serves to wrap the ribbon around the trailing side (for a forward printing direction) of the printhead. The assembly is positioned to permit the printhead to be rotated to a normal printing position at a printing line. By so arranging the ribbon path that the ribbon directions for arrival and departure of the assembly intersect the pivot axis, essentially zero resultant torque may be applied to the assembly by ribbon tension forces and the printing pressure at the receiving medium is, accordingly, unaffected by ribbon tension variations.
157	Dot matrix print head	US62256	1979-07-30	US4256408A	1981-03-17	Thomas F. Shelton
There is disclosed herein a dot matrix tilting print head assembly in which the print head is rotatably mounted in a frame. A solenoid is provided for rotating the print head a controlled distance so that printing occurs between previously printed dots. A pin extending from the print head is positioned into a larger diameter hole in the frame for controlling the distance to be one half of the center-to-center distance between printed dots. This entails maintaining very low tolerances for the mechanically moving parts. In addition, there is provided support members for allowing the removal of the print head alone from the frame means.
158	Print head carriage assembly for serial printers	US943790	1978-09-20	US4222673A	1980-09-16	Mario G. Plaza; Helmut K. Waibel
A print head carriage assembly for a serial printer apparatus, the carriage including a platform having two parallel channels extending laterally through the frame member for receiving self-aligning bearings and carriage guide rails; a central seat within the platform for seating the housing of a matrix print head with the longitudinal dimension of the print head oriented normal to the longitudinal axes of the channels, locking means for securing the matrix print head in place about said central seat with the neck of the head extending substantially normal to the axes of the channels, manifold adjustment means for adjusting the position of the head within the seat relative to the axes of the channels; and means for engaging the platform to a drive means for driving said platform laterally along said guide rails.
159	Drive mechanism for printer	US852001	1977-11-15	US4175876A	1979-11-27	Seiji Hanaoka
A printer including a printing head adapted for reciprocal displacement across a printing tape for effecting printing on the tape in at least one direction of reciprocation is provided. The printer includes a lever pivoted on a frame and adapted to reciprocate the printing head and a rotating disc engaged with a motor for driving the rotary disc which pivots the lever. The rotating disc is adapted to actuate a paper advance assembly, an ink-ribbon winding assembly and an ink-ribbon reversing assembly. The printing head may be of the type including a plurality of needles for recording dots by electromagnetic actuation of the needles.
160	Printing devices	US621833	1975-10-14	US4072224A	1978-02-07	Bernard S. Barnaby; Cyril W. Coe; Godfrey S. Hall; John H. Leworthy
A tape printer which is for use with pressure-sensitive paper tape and which prints characters in the form of dots disposed in a 7.times. 7 or 7.times. 5 matrix has its printing elements formed by a stack of seven metal strips. Each of these strips has an associated electromagent and upon energization of any one of these electromagnets the associated strip is moved longitudinally to cause the paper tape to be squeezed between an end of the appropriate strip and a rectilinear edge of a fixed anvil so as to cause a dot to be printed. The dimensions of such a dot are determined in one direction by the width of the operated strip and in the other direction by the width of the edge of the anvil. An electric motor is provided to advance the tape.

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