CN205263480U - Color killing device and image forming device - Google Patents

Abstract

The utility model provides a color killing device and image forming device, this achromatism device possesses: supply portion provides the medium of treating the achromatism, heat source portion is to the process the medium heats the achromatism, the portion of cleaning, it is right the output of heat source portion the medium cleans, including a pair of cleaning roller of establishhing relatively, scanning portion is through scanning, record the medium by surface state when supply portion exports, and the medium scans the record to its surface state through the achromatism after once more, carry out the comparison to twice record after, output the medium, the long -pending portion of carrying receives the process scanning portion contrast back the medium.

Description

Erasing device and image processing system

Technical field

The utility model relates to a kind of erasing device using in image processing system, and adopts the image processing system of this erasing device.

Background technology

Possesses the image processing system (MFP:Multi-FunctionalPeriPheral of original document feeder, multi-function peripheral) move by following steps: put into original copy by original copy delivery section, image read-out is the original copy through direct-reading portion by the scanning of direct-reading portion, image data generating, then form toner image on the surface of photoreceptor, again the toner image on photoreceptor is transferred to middle transfer body, middle transfer body is transferred to toner image on medium, transfer printing has the medium of toner image by fuser, pressurizeed and heated in the two sides of medium, with by toner image to medium, medium after photographic fixing is discharged to discharge tray.

In prior art, image processing system also possesses, to medium to be transferred, and for example paper, the erasing device that carries out colour killing. In this step, need to carry out the medium of colour killing processing, the toner of its imaging is the material that can disappear at a certain temperature. Erasing device carries out colour killing processing by heating to the medium that is printed on image, re-uses with recovering medium.

Erasing device has certain life-span, needs to change after use a period of time, in order to obtain life-span (counter) information of erasing device, has following two kinds of modes in the past:

Digital Detecting mode, it detects based on IC chip and sensor, and makes the operations such as fuse disconnection, wherein, and this detection and make the data based on recording medium such as fuse disconnection, the data of this recording medium are used sensor to detect.

New and old detection mode, it uses physical property, and this physical property judges whether to need to change by temperature change form color.

Above-mentioned determination methods all needs to increase new parts and realizes testing goal, has increased cost.

Utility model content

The erasing device that embodiment of utility model relates to, possesses:

Supply unit, provides the medium that uses colour killing ink printed information;

Thermal source portion, adds thermal discoloration to the described medium of process;

Sensor portion, detects the dielectric surface after described thermal source portion, to obtain colour killing result;

Judging unit, the colour killing result of obtaining according to described sensor portion, determines whether current thermal source portion needs to change.

The image processing system that embodiment of the utility model relates to, possesses:

Image read-out, by scan manuscript to obtain optical analog picture signal;

Photosensitive drums, carrying electrostatic latent image and toner image;

Exposure device, receives the optical analog picture signal of described image read-out, and the image forming area of described photosensitive drums is exposed, and forms described electrostatic latent image;

Developing apparatus, develops by developer the described electrostatic latent image being formed in described photosensitive drums, to form described toner image;

Transfer device, is transferred to medium by the described toner image being formed in described photosensitive drums; And

Erasing device, to transfer printing have can colour killing toner image medium carry out colour killing;

Wherein, described erasing device further comprises:

Supply unit, provides the medium that uses colour killing ink printed information;

Thermal source portion, adds thermal discoloration to the described medium of process;

Sensor portion, detects the dielectric surface after described thermal source portion, to obtain colour killing result;

Judging unit, the colour killing result of obtaining according to described sensor portion, determines whether current thermal source portion needs to change.

Erasing device of the present utility model, can remove the dirt adhering on medium by cleaning portion, reduce the scanning errors of scanner section while again scanning, improves the rate of recovery of recycling medium.

Brief description of the drawings

The sectional view of image processing system in embodiment of Fig. 1 the utility model;

The flow chart of Fig. 2 erasing device of the present utility model in the time judging whether thermal source portion needs to change.

Detailed description of the invention

Below, embodiment of the present utility model is described.

Fig. 1 is the sectional view of image processing system of the present utility model.

As shown in Figure 1, the image processing system 100 in present embodiment comprises image forming part 10, possesses supply unit 11, discharge portion 12 and the image read-out 13 of pick-up roller 34.

Image read-out 13 is provided with to the radiative light source of original copy, and the reverberation of original copy reflection sends to image forming part 10 become the signal of telecommunication after imaging len and optical imagery processing after.

Image forming part 10 possesses along transfer belt 15 Y (yellow), M (magenta), C (cyan), K (black) these four groups of images formation stations 16Y, 16M, 16C and 16K of configuration side by side. Each image forms station 16Y, 16M, 16C and 16K around the photosensitive drums 17Y along arrow a direction rotation, 17M, 17C and 17K, possess Charging system 18Y, 18M, 18C and 18K for photosensitive drums power supply, developing apparatus 20Y, 20M, 20C and 20K that electrostatic latent image in photosensitive drums is developed, and photosensitive drums cleaner 21Y, 21M, 21C and 21K.

The exposure device 22 of image forming part 10 irradiates laser, and forms electrostatic latent image on each photosensitive drums 17Y, 17M, 17C and 17K.

Backing roll 27 and driven voller 28 support transfer belt 15, and transfer belt 15 is advanced along arrow b direction. Primary transfer roller 23Y, 23M, 23C and the 23K of developing apparatus that is positioned at transfer belt 15 inner sides in transfer belt 15, and overlaps in transfer belt 15 toner image the toner image primary transfer that is formed at each photosensitive drums 17Y, 17M, 17C and 17K. Each photoreceptor cleaner 21Y, 21M, 21C and 21K remain in the toner on photosensitive drums 17Y, 17M, 17C and 17K after removing primary transfer.

In being driven in transfer belt 15 across the transfer belt 15 locational secondary transfer roller 31 relative with backing roll 27 along arrow c direction rotation. Secondary transfer roller 31 using the toner image in transfer belt 15 together secondary transfer printing supply from supply unit 11 along transport path 36 as the medium 40 of recording medium.

Transfer belt 15, image form station 16Y, 16M, 16C and 16K, laser explosure device 22, primary transfer roller 23Y, 23M, 23C and 23K and secondary transfer roller 31 composing images forming portions. Image forming part 10 possesses fixing device 9, distributing roller to 37 along transport path 36 in the downstream of secondary transfer roller 31.

Start duplicate in the situation that, image processing system 100 utilizes image forming part 10 to form toner image on medium 40, at fixing device 9 places by toner image photographic fixing after medium 40, medium 40 is expelled to discharge portion 12.

The mode of operation of erasing device 8, choose by the options button being arranged in image forming device body, selecting, after colour killing pattern, to put into the medium 40 for the treatment of colour killing by supply unit 11, the medium 40 is here the medium 40 having adopted after can colour killing toner transferred image. Medium 40 enters thermal source portion by transfer passage, and thermal source portion applies predetermined temperature by warm-up mill to the medium 40 of process, the colour killing at this temperature of the image on medium 40, and the medium 40 after colour killing is delivered to stow portion.

Medium needs the surface of medium to detect entering before thermal source portion, to determine whether dielectric surface has image. Therefore, be provided with sensor portion at the transfer passage place of the upstream of thermal source portion, sensor portion is to detecting through the dielectric surface before and after thermal source portion, to obtain colour killing result.

In the control module of image processing system, be provided with judging unit, the colour killing result that judging unit obtains according to sensor portion, determines whether current thermal source portion needs to change. The criterion here can be following mode:

The medium detecting according to sensor portion is entering its surperficial picture rate before thermal source portion, contrast the picture rate of this medium after the colour killing of thermal source portion, determine that whether colour killing is successful, if the picture rate difference before the picture rate after colour killing and colour killing is outside preassigned, represent that the temperature of current thermal source portion can not meet the colour killing requirement of medium, need to change. Judging unit can send corresponding replacing prompting on the control panel of image processing system.

Present embodiment is directly utilized the sensor portion in existing erasing device, and does not need to arrange special counter or coherent detection parts, can greatly reduce testing cost. Judge according to medium colour killing result, whether thermal source portion needs to change, and makes testing result more accurate, and can utilize to greatest extent thermal source portion.

The generally colour killing in the time of 60 DEG C-70 DEG C of colour killing ink that medium uses, therefore, the temperature that thermal source portion provides in the time of colour killing at least also will reach 60 DEG C-70 DEG C.

Sensor portion can adopt reflection sensor, and reflection sensor is to confirm by reflecting plate whether dielectric surface has colour killing ink. Reflecting plate can be made a response to the image of dielectric surface, but is that black or transparent medium are reactionless to there is no image or entirety.

This judging unit can, by being arranged on the power switch on the control panel of image processing system, be used as the starting switch of whether working.

The flow chart of Fig. 2 erasing device of the present utility model in the time judging whether thermal source portion needs to change.

As shown in Figure 2, in actual use:

While turning on the power switch when not needing to change thermal source portion, judging unit reads the detection information of fixing device reflection-type sensor, because do not start thermal source portion, so do not have colour killing process to occur, not reverberation of reflection sensor, does not react.

In the time that needs are changed thermal source portion, turn on the power switch, utilize thermal source portion to carry out colour killing processing to medium, after colour killing completes, judging unit reads the detection information of fixing device reflection-type sensor, determines whether to change thermal source portion in the picture rate before and after colour killing by medium.

In this process, if the medium that reflection sensor detects does not have image before colour killing, can send by control panel the information of paperboard.

If the temperature of thermal source portion does not reach colour killing temperature, judging unit can also regulate the warm-up mill ascending temperature of thermal source portion according to colour killing temperature, the temperature rise that makes warm-up mill during to colour killing ink generation colour killing 70 DEG C, reads the detection information of reflection sensor again.

Now, if colour killing completes, show not need to change thermal source portion (also showing that thermal source portion changes successfully).

If colour killing does not complete, show to change thermal source portion.

Present embodiment in the time judging whether thermal source portion needs to change, utilization be the colour killing characteristic of colour killing ink. In other embodiment, also can utilize the temperature characterisitic of thermal source portion, the temperature standard reaching by needs, detects thermal source portion and whether can reach standard operation state.

Although the description of several embodiments of the present utility model, but these embodiments are to propose as an example, are not intended to limit scope of the present utility model. The embodiment that these are new, can implement with other variety of ways, in the scope of main idea that does not depart from utility model, can carry out various omissions, displacement, combination and change. These embodiments and its distortion are all contained in scope of the present utility model and main idea, and are contained in the utility model and impartial scope thereof that claims record.

Claims (10)

1. an erasing device, is characterized in that, possesses:

Supply unit, provides the medium that uses colour killing ink printed information;

Thermal source portion, adds thermal discoloration to the described medium of process;

Sensor portion, detects the dielectric surface after described thermal source portion, to obtain colour killing result;

Judging unit, the colour killing result of obtaining according to described sensor portion, determines whether current thermal source portion needsChange.

2. erasing device according to claim 1, is characterized in that,

Described sensor portion adopts reflection sensor, confirms by reflecting plate whether described dielectric surface hasColour killing ink.

3. erasing device according to claim 1, is characterized in that,

Described sensor portion is arranged on the transport path of carrying described medium.

4. erasing device according to claim 1, is characterized in that,

Described judging unit is provided with the power switch of controlling self duty.

5. erasing device according to claim 1, is characterized in that,

Temperature when described thermal source portion heating is 60 DEG C-70 DEG C.

6. an image processing system, is characterized in that, possesses:

Image read-out, by scan manuscript to obtain optical analog picture signal;

Photosensitive drums, carrying electrostatic latent image and toner image;

Exposure device, receives the optical analog picture signal of described image read-out, and to described sensitizationThe image forming area of drum exposes, and forms described electrostatic latent image;

Developing apparatus, develops by developer the described electrostatic latent image being formed in described photosensitive drums,To form described toner image;

Transfer device, is transferred to medium by the described toner image being formed in described photosensitive drums; And

Erasing device, to transfer printing have can colour killing toner image medium carry out colour killing;

Wherein, described erasing device further comprises:

Supply unit, provides the medium that uses colour killing ink printed information;

Thermal source portion, adds thermal discoloration to the described medium of process;

Sensor portion, detects the dielectric surface after described thermal source portion, to obtain colour killing result;

Judging unit, the colour killing result of obtaining according to described sensor portion, determines whether current thermal source portion needsChange.

7. image processing system according to claim 6, is characterized in that,

Described sensor portion adopts reflection sensor, confirms by reflecting plate whether described dielectric surface hasColour killing ink.

8. image processing system according to claim 6, is characterized in that,

Described sensor portion is arranged on the transport path of carrying described medium.

9. image processing system according to claim 6, is characterized in that,

Described judging unit is provided with the power switch of controlling self duty.

10. image processing system according to claim 6, is characterized in that,

Temperature when described thermal source portion heating is 60 DEG C-70 DEG C.