Source: https://patents.google.com/patent/US7445330
Timestamp: 2018-03-23 05:34:18
Document Index: 358493869

Matched Legal Cases: ['art 100', 'art 100', 'art 100', 'art 120', 'art 150', 'art 160', 'art 120', 'art 180', 'art 120', 'art 150', 'art 160', 'art 140', 'art 120', 'art 180', 'art 180', 'art 180', 'art 180', 'arts 197', 'arts 197', 'art 150', 'art 160', 'art 140', 'art 120', 'arts 197', 'art 180', 'art 120', 'art 140', 'art 120', 'art 180', 'art 200', 'art 100', 'art.\n36']

US7445330B2 - Image forming apparatus - Google Patents
US7445330B2
US7445330B2 US10943249 US94324904A US7445330B2 US 7445330 B2 US7445330 B2 US 7445330B2 US 10943249 US10943249 US 10943249 US 94324904 A US94324904 A US 94324904A US 7445330 B2 US7445330 B2 US 7445330B2
US10943249
US20050104927A1 (en )
Taku Kudoh
The present application claims priority and contains subject matter related to Japanese Patent Applications No. 2003-328769 and No. 2004-261326 filed in the Japanese Patent Office on Sep. 19, 2003 and Sep. 8, 2004, respectively, and the entire contents of each of which are hereby incorporated herein by reference.
However, as illustrated in FIG. 5, each of the handhold 116 and the handhold 117 may be configured by a rigid member such as metal formed in a shape that the member can be grabbed with fingers, or as illustrated in FIG. 6A, the housing 119 may be formed with a synthetic resin while integrally providing grooves 116 a and 117 a as handholds. In this case, as illustrated in FIG. 6B which is a cross section of the housing 119 at a A-A line of FIG. 6A, each of the grooves 116 a and 117 a is preferably formed in a hook-like shape so that the weight of the printing unit 110 can be born by fingers inserted into the grooves 116 a and 117 b.
Further, the handhold 116 illustrated in FIG. 3 may be configured such that parts of the belt, that are pressed by the bolts, are formed in grooves, respectively, and when the belt is grabbed by fingers and is pulled to be moved, end parts of the grooves of the belt are hooked by head parts of the bolts and thereby the load of the printing unit 110 is born.
In the above-described embodiment, the printing unit 110 is drawn out using a sliding mechanism configured by the pair of rails 115 and the rail guides 109. However, the printing unit 110 may be drawn out using a guide rod and a sliding or rolling mechanism arranged along the guide rod. Further, the floor surface of the image forming part 100 may be configured such that the printing unit 110 can slide and move over the floor surface. Any other configuration may be appropriately used for drawing out the printing unit 110 from the image forming part 100 and pushing the printing unit 110 into the image forming part 100 to be set there.
Further, in an optical writing line printer and a thermal transfer printer using an LED for the printing mechanism part 120 of the printing unit 110, the maintenance mechanism part 150 and the blank printing mechanism part 160 used in an image forming apparatus using an ink jet printing head are not needed, so that only the printing mechanism part 120 may be included in the printing unit 110 configured as a unit that can be drawn out. In this case, the printing unit 110 may be configured to include a sub-scanning conveying mechanism, and further a control circuit may be included.
As illustrated in FIG. 12 illustrating a state of the connector part 180, at the side of the first connector board 180 a arranged are a connector 181 a for connection with the main body control board 190, connectors 181 b, 181 c and 181 d connecting with respective parts of the printing unit 110, such as the printing heads mounted to the carriage 121 of the printing mechanism part 120, the maintenance mechanism part 150, and the blank printing mechanism part 160, and a connector 181 e for connection with the second connector board 180 b. Wiring patterns are formed at the back surface of the first connector board 180 a to connect the connector 181 a with the connector 181 b, the connector 181 c, the connector 181 d and the connector 181 e. By connecting a connector 191 at a tip end of signal lines 400 from the main body control board 190 with the connector 181 a, connection of the main body control board 190 and respective parts of the printing unit 110 is realized through the intermediary of the wiring patterns and the connectors 181 b, 181 c and 181 d and connecting cables 187 b, 187 c and 187 d connecting to the respective parts of the printing unit 110. The connector 181 a, the connector 181 b, the connector 181 c, the connector 181 d and the connector 181 e are arranged such that respective connecting cables do not cross each other and thereby noise will not be picked up. The second connector board 180 b is connected with the first connector board 1980 a via the connector 181 e and is configured such that signals for controlling the sub-scanning conveying mechanism part 140 and the printing mechanism part 120 are inputted and outputted via a connector 181 f.
In FIG. 12, the connector part 180, i.e., the first connector board 180 a and the second connector board 180 b, are arranged substantially along the entire portion of the side surface of the printing unit 110 in the longitudinal direction, however, the first connector board 180 a and the second connector board 180 b are actually arranged at positions closer to the rear side plate 114 of the printing unit 110 as illustrated in FIG. 8 such that lengths of the connecting cables 187 b, 187 c, 187 d and 187 e are minimal and thereby pick-up noise is minimized. Further, the connector 181 a is arranged in the first connector board 180 a at a position closest to the rear side plate 114. Here, the main body control board 190 is arranged at a rear part in the main body of the copying apparatus 1 and at the side of the first conveying path cover 1 b, so that lengths of the connecting cables 400 of the connector 191 of the main body control board 190 are made relatively short. Further, as described above, the connector part 180 configured by the first connector board 180 a and the second connector board 180 b is provided to the side surface of the printing unit 110 opposing the second conveying path cover 1 b when the printing unit 110 is accommodated in the main body of the copying apparatus 1, so that the connector part 180 is exposed by opening the second conveying path cover 1 b. Thus, by opening the second conveying path cover 1 b and by detaching the connector 191 of the main body control board 190 from the connector 181 a of the first connector board 180 a, electrical connection between the printing unit 110 and the main body control board 190 is disconnected, and thereby the printing unit 110 can be detached from the main body of the copying apparatus 1. Further, because the lengths of the connecting cables 400 extending from the main control board 190 of the main body are made relatively short as described above, when detaching the printing unit 110 from the main body of the copying apparatus 1, the connecting cables 400 will not be obstructive.
As described above, the connector board 197 a corresponds to the connector part 180 in this embodiment, and through the intermediary of the connector board 197 a, the main body control board 190 and the driver board 194 at the side of the main body of the copying apparatus 1 are connected with the COM board 197 b, the sets of sensors 197 e, the sets of drive parts 197 e, etc. of the printing unit 110. The COM board 197 b and the connector board 197 a are connected with 75 signal lines, the sets of sensors 197 e and the connector board 197 a are connected with 55 signal lines, the sets of drive parts 197 f and the connector board 197 a are connected with 32 signal lines, and the main scanning encoder 188 and the connector board 197 a are connected with 6 signal lines, although a heavy or outline arrow line is used in illustrating each connection in FIG. 13. Thus, the signal lines of the connector board 197 a almost amount to 170, and if signal lines for communicating with the maintenance mechanism part 150 and the blank printing mechanism part 160 are added, the signal lines of the connector board 197 a amount to about 200. Therefore, a plurality of connectors are provided on the connector board 197 a, i.e., the connector 181 a for connection with the main body control board 190, and the connectors 181 b, 181 c and 181 d connecting with respective parts of the printing unit 110, that are provided, in FIG. 12, to the first connector boat 180 a, and the connector 181 f connecting with the sub-scanning conveying mechanism part 140 and the printing mechanism part 120, that is arranged, in FIG. 12, for connection with the second connector board 180 b, and wiring patterns are formed at the back surface of the connector board 197 a to connect the connector 181 a with the connectors 18lb, 181 c, 181 d and 181 f. By connecting the connector 191 at the tip ends of the signal lines 400 from the main body control board 190 with the connector 181 a as in FIG. 12, connection of the main body control board 190 with the COM board 197 b, the sets of sensors 197 e, the sets of drive parts 197 f, and the main scanning encoder 188, etc., is realized, so that connection of the main body control board 190 with respective parts of the printing unit 110 is realized. Thus, when drawing out the printing unit 110 from the main body of the copying apparatus 1, by detaching the connector 191 from the connector 181 a, connection between the main body control board 190 and the printing unit 110 is broken electrically and physically, so that the printing unit 110 can be drawn out of the main body of the copying apparatus 1.
When the connector part 180 is configured by the first connector board 180 a and the second connector board 180 b and the connector 181 f is provided for connection with the second connector board 180 b, the signals for controlling the sub-scanning conveying mechanism 140 and the printing mechanism part 120 are inputted to and outputted from the second connector board 180 b via the connector 181 f as described above. Therefore, the sub-scanning conveying mechanism part 140 and the printing mechanism part 120 can be replaced independently from other parts by detaching the connector 181 f, respectively.
In this embodiment, the handhold 117 b at the rear side of the printing unit 110 is configured with a belt and the handhold 116 b at this side (the front side) is configured by a concave part provided at the bottom part of the front side of the printing unit 110 as illustrated in FIG. 11. When the printing unit 110 is set in the main body of the copying apparatus 1, the handhold 117 b at the rear side retreats along the upper surface of a frame extending in a direction perpendicular to the sheet conveying direction with a tip end thereof fastened with a pin 117 c. When drawing out the printing unit 110, the tip end of the handhold 117 b is disengaged from the pin 117 c and the handhold 117 b is bent in the direction perpendicular to the frame as indicated by a dashed line in FIG. 11 and the tip end thereof is fixed to a fixing clasp 117 d so that the handhold 117 b can be grasped by fingers. By grasping the handhold 117 b at the rear side, which is configured with the belt, and the handhold 116 b at the front side, which is configured by the concave part, as described above, the printing unit 110 can be easily lifted. Accordingly, after drawing out the printing unit 110 to a predetermined position, the printing unit 110 can be easily detached from the main body of the copying apparatus 1.
Further, as illustrated in FIG. 15, the connector part 180 may be configured by a printed circuit board 184 provided to a side surface of the printing unit 110, and a plurality of connectors divided by functions, arranged on the printing circuit board 184 and connecting with respective parts of the printing unit 110. In this example, a connector 185 a and a connector 185 b are provided on the printed circuit board 184. A plurality of connectors, in this example, a connector 186 a and a connector 186 b , provided at tip ends of signal lines 400 and 400 b from the main body control board 190, are connected to the connector 185 a and the connector 185 b. In this case also, the positions and the numbers of pins of the connectors on the printing circuit board 184 and the connectors at the tip ends of signal lines from the main body control board 190 may be set to correspond to each other to avoid erroneous connection.
In the above-described embodiments, the copying apparatus 1 including the image reading part 200 arranged above the image forming part 100 has been used as an example of the image forming apparatus of the present invention. However, it is needless to say that the present invention can be applied to a printer in which an image reading part is not included.
a printing unit including an inkjet printing head configured to eject ink onto a recording medium, the printing unit including a carriage having the ink jet printing head mounted thereto, the carriage moving along a guide member in a main direction perpendicular to a recording medium conveying direction, the printing unit further including a maintenance mechanism configured to maintain a writing function of the inkjet printing head, said maintenance mechanism including a cleaner configured to clean a surface of the ink jet printing head; and
a guide device configured to guide the printing unit, when the printing unit is drawn from the image forming apparatus, in a substantially horizontal direction and in a direction substantially perpendicular to a recording medium conveying direction, the guide device extending substantially perpendicular to the recording medium conveying direction and in a substantially horizontal direction,
wherein the maintenance mechanism is drawn together with the inkjet printing head, and is arranged in an inner-most portion with respect to a direction of removal from the image forming apparatus, and the inkjet printing head is located opposing the maintenance mechanism when the maintenance mechanism is drawn together with the inkjet printing head, wherein the maintenance mechanism is drawn in the main direction.
2. The image forming apparatus according to claim 1, wherein the guide device comprises:
a guide member connected to the apparatus and extending in the direction substantially perpendicular to the recording medium conveying direction; and
a guided member connected to the printing unit and configured to be guided by the guide member.
3. The image forming apparatus according to claim 2, wherein the guided member connected to the printing unit comprises:
a protruding member,
wherein the protruding member is supported by the guide member connected to the apparatus so as to be movable in the direction substantially perpendicular to the recording medium conveying direction.
4. The image forming apparatus according to claim 1, wherein the guide device comprises:
a floor surface of an accommodating part of the apparatus accommodating the printing unit.
5. The image forming apparatus according to claim 1, wherein the guide device supports the printing unit so as to be detachable from the apparatus.
6. The image forming apparatus according to claim 1, wherein the printing unit comprises:
a printing mechanism including a carriage configured to mount the ink jet printing head and configured to move the carriage in a main scanning direction.
7. The image forming apparatus according to claim 6, wherein the printing unit further comprises:
a maintenance mechanism configured to maintain a writing function of the ink jet printing head.
8. The image forming apparatus according to claim 6, wherein the printing mechanism further comprises:
a control circuit configured to control movement of the carriage in the main scanning direction.
9. The image forming apparatus according to claim 6, wherein the printing unit further comprises:
a connection device configured to connect the printing mechanism of the printing unit with a control part of the apparatus,
wherein the connection device is exposed when the printing unit is accommodated in the apparatus and a side cover of the apparatus has been opened.
10. The image forming apparatus according to claim 9, wherein the connection device further comprises:
a board fixed to the printing unit; and
a first connector arranged on the board and configured to connect with the control part of the apparatus.
11. The image forming apparatus according to claim 10, wherein the connection device further comprises:
a second connector arranged on the board and configured to connect with the printing mechanism of the printing unit; and
a wiring pattern formed on the board and configured to connect the second connector and the first connector.
12. The image forming apparatus according to claim 9, wherein the connection device further comprises:
a connector arranged on the board and configured to connect the printing mechanism of the printing unit and the control part of the apparatus.
13. The image forming apparatus according to claim 6, wherein the printing unit further comprises:
a sub-scanning conveying mechanism configured to convey the recording medium in a sub-scanning direction at a part of the printing unit where an image is formed on the recording medium.
14. The image forming apparatus according to claim 13, wherein the sub-scanning conveying mechanism comprises:
a conveying roller;
a drive source configured to drive the conveying roller.
15. The image forming apparatus according to claim 13, wherein the sub-scanning conveying mechanism comprises:
a conveying belt; and
a drive source configured to drive at least one of the conveying roller and the conveying belt.
16. The image forming apparatus according to claim 15, wherein the conveying belt is an electrostatic belt.
17. The image forming apparatus according to claim 13, wherein the sub-scanning conveying mechanism comprises:
a control circuit configured to control conveying the recording medium in the sub-scanning direction.
18. The image forming apparatus according to claim 13, wherein the printing unit further comprises:
a connection device configured to connect at least one of the printing mechanism and the sub-scanning conveying mechanism of the printing unit with a control part of the apparatus,
19. The image forming apparatus according to claim 18, wherein the connection device comprises:
20. The image forming apparatus according to claim 19, wherein the connection device further comprises:
a second connector arranged on the board and configured to connect with at least one of the printing mechanism and the sub-scanning conveying mechanism of the printing unit; and
a wiring pattern arranged on the board and configured to connect the second connector and the first connector.
21. The image forming apparatus according to claim 18, wherein the connection device further comprises:
a connector arranged on the board and configured to connect at least one of the printing mechanism and the sub-scanning conveying mechanism of the printing unit with the control part of the apparatus.
22. The image forming apparatus according to claim 1, wherein the printing unit comprises:
23. The image forming apparatus according to claim 22, wherein the sub-scanning conveying mechanism comprises:
24. The image forming apparatus according to claim 22, wherein the sub-scanning conveying mechanism comprises:
a drive source configured to drive at least either of the conveying roller and the conveying belt.
25. The image forming apparatus according to claim 24, wherein the conveying belt is an electrostatic belt.
26. The image forming apparatus according to claim 22, wherein the sub-scanning conveying mechanism comprises:
27. The image forming apparatus according to claim 22, wherein the printing unit further comprises:
a connection device configured to connect the sub-scanning conveying mechanism of the printing unit and a control part of the apparatus,
28. The image forming apparatus according to claim 27, wherein the connection device comprises:
29. The image forming apparatus according to claim 28, wherein the connection device further comprises:
a second connector arranged on the board and configured to connect with the sub-scanning conveying mechanism of the printing unit; and
30. The image forming apparatus according to claim 27, wherein the connection device comprises:
a connector arranged on the board and configured to connect the sub-scanning conveying mechanism and the control part of the apparatus.
31. The image forming apparatus according to claim 1, further comprising:
an ink tank configured to supply ink to the printing unit and to be moved integrally with the printing unit when the printing unit is moved.
32. The image forming apparatus according to claim 1, wherein the printing unit is configured to include a handhold.
33. The image forming apparatus according to claim 32, wherein the handhold comprises:
a belt-like member extending along a member of the printing unit with a tip end thereof detachably fastened to the member and configured such that the tip end thereof can be detached from the member and after the tip end thereof has been detached from the member and the belt-like member has been bent, can be fastened to another member of the printing unit so that the belt-like member can be grasped with fingers.
34. The image forming apparatus according to claim 1, further comprising:
an image reading part configured to optically read an original document and to convert image information of the original document to an electrical signal; and
an image forming part configured to include the printing unit,
wherein the image reading part is provided above the image forming part.
a discharge tray onto which the recording medium on which an image has been formed is discharged,
wherein the discharge tray is provided between the image reading part and the image forming part.
36. An image forming apparatus according to claim 1, wherein the maintenance mechanism is drawn from the front of the image forming apparatus.
37. An image forming apparatus according to claim 1, further comprising:
a trial ink ejection mechanism configured to execute trial ink ejection outside a printing area arranged in an outer-most portion with respect to a direction of removal from the image forming apparatus.
38. An image forming apparatus according to claim 37, wherein said printing unit includes an opening extending in the carriage moving direction and configured to exposed at least one of the guide rod, the carriage, and the trial ink ejection mechanism.
39. An image forming apparatus according to claim 1, wherein said cleaner includes a wiper configured to wipe the ink jet head.
a printing unit including an ink jet printing head configured to eject ink onto a recording medium and a sheet conveying mechanism configured to convey a recording medium in a sub-scanning direction, the printing unit including a carriage having the ink jet printing head mounted thereto, the carriage moving along a guide member in a main direction perpendicular to a recording medium conveying direction, the printing unit further including a maintenance mechanism configured to maintain a writing function of the ink jet printing head, said maintenance mechanism including a cleaner configured to clean a surface of the ink jet printing head; and
a guide member configured to guide the printing unit when the printing unit is drawn from the image forming apparatus, the guide member extending substantially perpendicular to the recording medium conveying direction and extending in a substantially horizontal direction, the guide member extending substantially perpendicular to the recording medium conveying direction;
wherein the sheet conveying mechanism is drawn together with the ink jet printing head, the inkjet printing head is located opposing the maintenance mechanism when the maintenance mechanism is drawn together with the inkjet printing head, and wherein the maintenance mechanism is drawn in the main direction and is arranged in an inner-most portion with respect to a direction of removal from the image forming apparatus.
41. An image forming apparatus according to claim 40, wherein the maintenance mechanism is drawn from the front of the image forming apparatus.
US10943249 2003-09-19 2004-09-17 Image forming apparatus Active 2025-10-06 US7445330B2 (en)
JP2003-328769 2003-09-19
JP2003328769 2003-09-19
JP2004261326A JP4473079B2 (en) 2003-09-19 2004-09-08 Image forming apparatus
JP2004-261326 2004-09-08
US11692690 US7731353B2 (en) 2003-09-19 2007-03-28 Image forming apparatus
US20050104927A1 true US20050104927A1 (en) 2005-05-19
US7445330B2 true US7445330B2 (en) 2008-11-04
ID=34315691
US10943249 Active 2025-10-06 US7445330B2 (en) 2003-09-19 2004-09-17 Image forming apparatus
US11692690 Active 2025-04-22 US7731353B2 (en) 2003-09-19 2007-03-28 Image forming apparatus
US (2) US7445330B2 (en)
EP (1) EP1520720B1 (en)
JP (1) JP4473079B2 (en)
KR (1) KR100692238B1 (en)
CN (1) CN100346984C (en)
DE (1) DE602004009876T2 (en)
ES (1) ES2295750T3 (en)
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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KUDOH, TAKU;NONAKA, MANABU;KAWASHIMA, YASUHIRO;REEL/FRAME:016162/0794;SIGNING DATES FROM 20041230 TO 20050107