US3859957A - Release fluid applicator - Google Patents

Release fluid applicator Download PDF

Info

Publication number
US3859957A
US3859957A US408538A US40853873A US3859957A US 3859957 A US3859957 A US 3859957A US 408538 A US408538 A US 408538A US 40853873 A US40853873 A US 40853873A US 3859957 A US3859957 A US 3859957A
Authority
US
United States
Prior art keywords
frame
rigid frame
wicking
blanket
longitudinal edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US408538A
Other languages
English (en)
Inventor
Roger L Larson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Priority to US408538A priority Critical patent/US3859957A/en
Priority to JP49121848A priority patent/JPS5833553B2/ja
Priority to DE2450585A priority patent/DE2450585C2/de
Application granted granted Critical
Publication of US3859957A publication Critical patent/US3859957A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
    • G03G15/2025—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means with special means for lubricating and/or cleaning the fixing unit, e.g. applying offset preventing fluid

Definitions

  • B05c 11/10 face having two longitudinal edge areas Separated y a 53 Fidd f Search 1 /70 203 207 2 0 central recess extending the length thereof has a wick- 118/264, 269, 637; 355/15; 432/59; 15/2501 ing blanket, containing a release and off-set preventing fluid, stretched across its one surface to contact 5 References Cited the two longitudinal edge areas.
  • the frame is resil- UNITED STATES PATENTS iently biased to forcibly engage the portions of the wicking blanket over the longitudinal edge areas of 3 2, 22% the frame against the pressure fixing roller.
  • the present invention relates to an applicatorcleaner for applying a release and off-set preventing fluid to the surface of a cylindrical pressure fixing roller and for cleaning developer powder therefrom.
  • Electrographic copying machines generally use a developer or toner powder which is transferred to a sheet of paper in the same image pattern as appears on the original document being copied, which powder is permanently affixed to the paper.
  • Most of the developer powders in the present use are made up primarily of thermoplastic resins which are affixed to the paper by raising the temperature of the powder to its melting point, causing the particles to coalesce and flow together and at the same time adhere to the receptor paper.
  • the heat fusing technique while in widespread successful use, suffers from several drawbacks.
  • the time required to bring the thermoplastic particles up to their melting point to effect fusion to the paper is usually the slowest step in the photographic copying process. More heat would speed up the process, but this is limited by the receptor paper sincethe temperature of the fusing system must always be below the char point of the paper.
  • the temperature of the fusing system must always be below the char point of the paper.
  • use has been made of lower melting point thermoplastic resins.
  • this has produced other problems, such as poor character definition in the final image and the loss of sharpness in the image formations.
  • a second drawback of the heat fusing process is the presence of heat energy emanating from the fusing device, resulting in the general discomfort of persons working in the area surrounding the machine.
  • a third drawback is the requirement that startup is not instantaneously achieved after a period of shutdown since the fusing device must'be brought up to proper operating temperature. And, in order to have the equipment ready to meet a copy demand anytime after start-up it must be kept at or near operating temperature resulting in a waste of heat energy during periods when the machine is not in use.
  • the present invention provides an applicator-cleaner for applying a release and off-set preventing fluid to the surface of a cylindrical pressure-fixing roller and for cleaning developer powder therefrom.
  • a rigid frame having a length corresponding to the length of the pressure fixing roller is formed with one surface having two longitudinal edge areas separated by a central recess extending the length of the frame and a wicking blanket containing a predetermined quantity of a release and off-set preventing fluid is secured to the frame and stretched across the one surface of the frame to contact the two longitudinal edge areas thereof.
  • the support is resiliently biased in a direction to urge the one surface thereof toward contact with the pressure fusing roller to forcibly engage the portions of the wicking blanket over the longitudinal edge areas of the frame against the pressure fusing roller.
  • the applicator-cleaner of the present invention applies very small quantities of the release and off-set preventing fluid to the surface of the cylindrical pressure fixing roller uniformly throughout its useful life.
  • the release and off-set preventing fluid is applied generally at the longitudinal edge area of the frame that is forward with respect to the direction of rotation of the pressure fixing roller and at the rearward longitudinal edge developer powder is cleaned from the pressure fixing roller.
  • the recess separating the longitudinal edge areas effectively segregates the cleaning area from the release and off-set preventing fluid applicating area so that all of the useable off-set preventing fluid can be wicked from the blanket.
  • FIG. 1 is a perspective view showing the top, one longitudinal edge and one end of one portion of an applicator-cleaner constructed in accordance with the present invention
  • FIG. 2 is a longitudinal elevation view of an applicator-cleaner constructed in accordance with the present invention including the portion illustrated in FIG. 1;
  • FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 2.
  • the applicator-cleaner of the present invention comprises a rigid frame 10, a wicking blanket 12 containing a release and off-set preventing fluid and resilient biasing means comprising a pair of helical compression springs 14 and 15.
  • the frame 10 is, for example extruded aluminum, and it has a length corresponding to the length of a pressure fixing roller 17 with which the applicatorcleaner is to be used. It is formed with one surface having two longitudinal edge areas 19 and 20 separated by a central recess 22 extending the length of the frame 10.
  • the opposite surface of the frame is also recessed and internally formed with a rectangular longitudinal slot 24 extending parallel to the length of the first surface to be slidably received on a support bar 26 which is complementary in cross-sectional shape to the slot 24.
  • the frame 11 is further formed adjacent and parallel to its longitudinal edges with a pair of opposed longitudinally extending cylindrical apertures 28 and 29.
  • Each of the apertures 28 and 29 is slotted through its adjacent edge wall to permit access through an edge wall into the corresponding aperture, the communicating slots having a lesser width than the diameter of the apertures 28 and 29.
  • the wicking blanket 12 is, for example, a felt wicking material, and it has a length equal to that of the frame and a width greater than that of the frame.
  • the wicking blanket is stretched across the surface of the frame containing the recess 22 to contact the longitudinal edge areas 19 and 20 thereof.
  • the edges of the wicking blanket are similarly folded back and inserted into the apertures 28 and 29 wherein they are retained by similar retaining rods 31 and 32 respectively, having diameters less than that of the apertures 28 and 29 and inserted through the folded back edges of the wicking blanket 12 down the apertures 28 and 29.
  • the retaining rods 31 and 32 are joined by a U-shaped connecting portion 33 at right angles to the rods 31 and 32 which defines a handle for the frame 10 with the wicking blanket 12 thereon.
  • brackets 35 and 36 extending from the main vertical machine walls 38 and 39, respectively, pivotally support the applicator-cleaner over the pressure roller 17.
  • the brackets 35 and 36 are formed with wrap around portions 37 to provide facing vertical portions of each bracket 35 and 36 through which facing pivot pins 41 are threaded to engage opposed recesses formed near the top of each of a pair of similar end pieces 44 and 45 of the applicator-cleaner.
  • Each end piece 44 and 45 is generally cylindrical with a pair of opposed flanges 47 and 48 extending perpendicular to its axis at its base.
  • Attached to the flanges 47 and 48 of the end pieces 44 and 45 are the ends of a strengthening bar 49 extending between the end pieces 44 and 45 parallel to the frame support bar 26.
  • Each end piece 44 and 45 is formed with a central axially extending rectangular aperture 52 in which a rectangular shaft 54 is slideable.
  • One end of each shaft 54 is secured by a screw 55 to the frame support bar 26 and the opposite end thereof is formed with a retaining flange at 90 to its length.
  • the helical compression springs 14 and 15 surround the rectangular shafts 54 and are captured between the end pieces 44 and 45, respectively, and the frame support bar 26.
  • the retaining flanges at the upper ends of the shafts 54 prevent the compression springs 14 and 15 from pulling the shafts all the way through the end pieces 44 and 45 when the frame 10 is pivoted away from its contact with the pressure roller 17.
  • the frame 10 with a wicking blanket 12 attached thereto and a handle 33 extending therefrom, as illustrated in FIG. 1, is picked up by the handle 33.
  • the frame support bar 26 and the remainder of the pivotal structure is pivoted away from its alignment with the axis of the pressure roller 17 to the left as viewed in FIG. 3.
  • the longitudinal slot 24 in the frame 10 is aligned with the support bar 26 and the frame is then slid onto the support bar.
  • the handle 33 is grasped and pushed to the right as viewed in FIG. 3 into a slot in the bracket 36 to pivot the applicator-cleaner into the position illustrated in FIGS.
  • FIG. 3 illustrates the applicatorcleaner in use with the pressure roller 17 rotating in a clockwise direction.
  • Toner powder particles 57 adhering to the pressure roller 17 are removed by the wicking blanket over and adjacent the left longitudinal support area 19 of the frame 10 and an off-set preventing fluid 59, for example silicone oil, is applied to the pressure roller 17 by that portion of the wicking blanket over and adjacent the right longitudinal edge area 20.
  • an off-set preventing fluid 59 for example silicone oil
  • the cleaning and applicating functions are in this manner effectively separated so that the toner powder 57 being cleaned from the pressure roller 17 does not contaminate that portion of the wicking blanket where the silicone oil 59 is being applied, thereby allowing the applicator-cleaner to operate effectively until all of the usable off-set preventing fluid has been wicked out of the blanket 12 onto the pressure roller 17.
  • the applicator-cleaner illustrated and described herein was utilized in a pressure-fixing system wherein the pressure rollers apply a fixing pressure of 3.6 kilograms per lineal millimeter along a length of 271 millimeters.
  • a polyester felt wicking blanket 12 having a width of millimeters and in contact with the pressure roller 17 over 20 millimeters of its width was used.
  • the frame 10 and the wicking blanket were forced into contact with the pressure roller 17 by the springs 14 and 15 with a total force of 4.5 kilograms.
  • An applicator-cleaner for applying a release and off-set preventing fluid to the surface of a cylindrical pressure fixing roller and for cleaning developer powder therefrom, comprising:
  • a rigid frame having a length corresponding to the length of a said pressure fixing roller and formed with one surface having two longitudinal edge areas separated by a central recess extending the length of said frame,
  • a wicking blanket secured to said frame and stretched across said one surface of said frame to contact said two longitudinal edge areas thereof
  • resilient biasing means for urging said one surface of said rigid frame toward contact with the pressure fusing roller to forcibly engage the portions of said wicking blanket over said longitudinal edge areas of said frame against the pressure fusing roller.
  • the applicator-cleaner of claim 1 including means supporting said rigid frame and said resilient biasing means for pivotal movement about an axis parallel to the axis of the fusing cylinder, said resilient biasing means being positioned between said pivot axis and said slot in said rigid frame to slidably receive and support said rigid frame, said bar being positioned between said rigid frame and said resilient biasing means, whereby said rigid frame may be pivoted away from the fusing cylinder and slidably removed from said supporting means and replaced to replace said wicking blanket.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)
  • Wet Developing In Electrophotography (AREA)
  • Cleaning In General (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
US408538A 1973-10-23 1973-10-23 Release fluid applicator Expired - Lifetime US3859957A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US408538A US3859957A (en) 1973-10-23 1973-10-23 Release fluid applicator
JP49121848A JPS5833553B2 (ja) 1973-10-23 1974-10-22 塗布器−クリ−ナ−
DE2450585A DE2450585C2 (de) 1973-10-23 1974-10-22 Reinigungseinrichtung zum gleichzeitigen Abstreifen von Toner und Auftragen einer Trennflüssigkeit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US408538A US3859957A (en) 1973-10-23 1973-10-23 Release fluid applicator

Publications (1)

Publication Number Publication Date
US3859957A true US3859957A (en) 1975-01-14

Family

ID=23616684

Family Applications (1)

Application Number Title Priority Date Filing Date
US408538A Expired - Lifetime US3859957A (en) 1973-10-23 1973-10-23 Release fluid applicator

Country Status (3)

Country Link
US (1) US3859957A (enrdf_load_stackoverflow)
JP (1) JPS5833553B2 (enrdf_load_stackoverflow)
DE (1) DE2450585C2 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51149032A (en) * 1975-06-17 1976-12-21 Ricoh Co Ltd Cleaning device for copying apparatus
JPS5323240U (enrdf_load_stackoverflow) * 1976-08-06 1978-02-27
FR2500180A1 (enrdf_load_stackoverflow) * 1981-02-19 1982-08-20 Sumitomo Electric Industries
US4743943A (en) * 1987-01-12 1988-05-10 International Business Machines Corporation Renewable fuser wick
US4757763A (en) * 1979-04-19 1988-07-19 Baldwin Technology Corporation Automatic blanket cylinder cleaner
WO1997027517A1 (de) * 1996-01-26 1997-07-31 Oce Printing Systems Gmbh Trennmittelauftragsvorrichtung zum auftragen von trennmittel auf die oberfläche einer fixierwalze eines elektrografischen druck- oder kopiergerätes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53132352A (en) * 1977-04-22 1978-11-18 Sharp Corp Electrophotographic copier
JPH0449637Y2 (enrdf_load_stackoverflow) * 1984-12-21 1992-11-24

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US826520A (en) * 1905-10-23 1906-07-17 Eugene O Myers Moistener.
US3518965A (en) * 1969-03-18 1970-07-07 Alfred B Poschel Apparatus for applying a coating on printing cylinder
US3796183A (en) * 1972-05-17 1974-03-12 Xerox Corp Free floating pressure biasing apparatus for cleaning roll fuser

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2231453C3 (de) * 1971-07-20 1980-06-04 Xerox Corp., Rochester, N.Y. (V.St.A.) Benetzungseinrichtung fur die beheizte Fixierwalze einer Schmelzfixiereinrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US826520A (en) * 1905-10-23 1906-07-17 Eugene O Myers Moistener.
US3518965A (en) * 1969-03-18 1970-07-07 Alfred B Poschel Apparatus for applying a coating on printing cylinder
US3796183A (en) * 1972-05-17 1974-03-12 Xerox Corp Free floating pressure biasing apparatus for cleaning roll fuser

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51149032A (en) * 1975-06-17 1976-12-21 Ricoh Co Ltd Cleaning device for copying apparatus
JPS5323240U (enrdf_load_stackoverflow) * 1976-08-06 1978-02-27
US4757763A (en) * 1979-04-19 1988-07-19 Baldwin Technology Corporation Automatic blanket cylinder cleaner
FR2500180A1 (enrdf_load_stackoverflow) * 1981-02-19 1982-08-20 Sumitomo Electric Industries
US4743943A (en) * 1987-01-12 1988-05-10 International Business Machines Corporation Renewable fuser wick
WO1997027517A1 (de) * 1996-01-26 1997-07-31 Oce Printing Systems Gmbh Trennmittelauftragsvorrichtung zum auftragen von trennmittel auf die oberfläche einer fixierwalze eines elektrografischen druck- oder kopiergerätes
US6072978A (en) * 1996-01-26 2000-06-06 Oce Printing Systems Gmbh Device for applying release agent to the surface of a fixing roller of an electrographic printer or copier

Also Published As

Publication number Publication date
JPS5074436A (enrdf_load_stackoverflow) 1975-06-19
JPS5833553B2 (ja) 1983-07-20
DE2450585C2 (de) 1984-03-15
DE2450585A1 (de) 1975-04-30

Similar Documents

Publication Publication Date Title
KR920008753B1 (ko) 화상형성용지위에 분체상(toner image)을 정착시키기 위한 롤러들을 사용하는 화상형성 장치
JP2667035B2 (ja) 定着装置
US3883291A (en) Oil applicator for reproduction machine fuser
US3859957A (en) Release fluid applicator
DE3886997T2 (de) Abstreiffinger-Mechanismus.
US3881859A (en) Stripper finger design to prevent {37 oil-on-the-copy{38
JPH103231A (ja) 一様なニップ速度のロール定着装置
US4277161A (en) Cleaner for pressure fixing roller
US4501483A (en) Fuser apparatus
EP0000631A1 (en) Xerographic copier including hot roll fuser
JPH01304481A (ja) 定着装置
CA1066351A (en) Dual mode roll fuser
US3934113A (en) Roll fuser apparatus and mounting arrangement therefor
US3831553A (en) Wick for oil dispensing apparatus
US3913521A (en) Composite doctoring blade for a heated fuser roll utilized for fixing toner
US4028050A (en) Stripper finger and combination mounting means therefor
US5420678A (en) Pinch roll for a release material delivery system
US3951538A (en) Permanently nipped contact image fuser system incorporating a one-way clutch
JPH0233175A (ja) 改良型定着器システム
US3908589A (en) Structure for applying release agent to a heated fuser roll structure
CA1059573A (en) Cleaning structure for an elastomeric fusing member
US7729651B2 (en) Axially translating web cleaning system for a fuser
JP2001215838A (ja) 定着装置
JP2002229371A (ja) 駆動された離型剤供給ロールを持つ定着離型剤管理システム
CA2361355C (en) Wick roller assembly for an electrophotographic machine